Filed pursuant to Rules 497(c) and (h)

under the Securities Act of 1933, As Amended

File no. 333-144660

PROSPECTUS

$350,000,000

Calamos Global Dynamic Income Fund

Auction Rate Cumulative Preferred Shares
2,800 Shares, Series M
2,800 Shares, Series T
2,800 Shares, Series W
2,800 Shares, Series TH
2,800 Shares, Series F
Liquidation Preference $25,000 Per Share

 

 

Investment Objective.  Calamos Global Dynamic Income Fund (the “Fund”) is a recently organized, diversified, closed-end management investment company. The Fund’s investment objective is to generate a high level of current income, with a secondary objective of capital appreciation.

 

Portfolio Contents.  Under normal circumstances, the Fund will invest primarily in a globally diversified portfolio of convertible instruments, common and preferred stocks, and income-producing securities such as investment grade and below investment grade (high yield/high risk) debt securities. The Fund, under normal circumstances, will invest at least 40% of its managed assets in securities of foreign issuers in developed and emerging markets, including debt and equity securities of corporate issuers and debt securities of government issuers. “Managed assets” means the total assets of the Fund (including any assets attributable to any leverage that may be outstanding) minus the sum of accrued liabilities (other than debt representing financial leverage). For this purpose the liquidation preference on any preferred shares will not constitute a liability. Below investment grade (high yield/high risk) securities are rated Ba or lower by Moody’s Investors Service, Inc. (“Moody’s”) or BB or lower by Standard & Poor’s Corporation, a division of The McGraw-Hill Companies (“S&P”) or are unrated securities of comparable quality as determined by the Fund’s investment adviser. The Fund may not invest in debt securities that are rated lower than C. Below investment grade securities are commonly referred to as “junk bonds” and are considered speculative with respect to the issuer’s capacity to pay interest and repay principal. They involve greater risk of loss, are subject to greater price volatility and are less liquid, especially during periods of economic uncertainty or change, than higher rated securities. There can be no assurance that the Fund will achieve its investment objective.

 

Investing in the Fund’s Preferred Shares involves risks. See “Risk Factors” beginning on page 30.

 

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

 

 

 

The underwriters are offering the Auction Rate Cumulative Preferred Shares subject to various conditions. The Auction Rate Cumulative Preferred Shares will be ready for delivery in book-entry form only, through the facilities of The Depository Trust Company on or about September 18, 2007.

 

 

Wachovia Securities

                 Citi

H&R Block Financial Advisors, Inc.

                        RBC Capital Markets

Stifel Nicolaus

 

 

The date of this prospectus is September 14, 2007.

(continued from previous page)

 

Preferred Shares.  The Fund is offering 2,800 shares of each of Series M, Series T, Series W, Series TH and Series F Auction Rate Cumulative Preferred Shares. The shares are referred to in this prospectus as “Preferred Shares.” The Preferred Shares have a liquidation preference of $25,000 per share, plus any accumulated, unpaid dividends. The Preferred Shares have priority over the Fund’s common shares as to distribution of assets as described in this prospectus. This offering is conditioned on the Preferred Shares receiving a rating of “AAA” from Fitch Ratings (“Fitch”) and “AAA” from S&P.

 

The dividend rate for the initial dividend period will be 6.10% per year for Series M, 6.10% for Series T, 6.10% for Series W, 6.10% for Series TH and 6.10% for Series F. The initial dividend period is from the date of issuance through September 24, 2007 for Series M, September 25, 2007 for Series T, September 26, 2007 for Series W, September 27, 2007 for Series TH and September 28, 2007 for Series F. Series M, T, W, TH and F will have initial dividend periods of 7 days, 8 days, 9 days, 10 days, and 13 days, respectively. For subsequent dividend periods, Preferred Shares pay dividends based on a rate set at auction, usually held weekly. Dividends on the Preferred Shares will be cumulative. Prospective purchasers should carefully review the auction procedures described in this prospectus and should note: (1) a buy order (called a “bid order”) or sell order is a commitment to buy or sell Preferred Shares based on the results of an auction; (2) auctions will be conducted by telephone; and (3) purchases and sales will be settled on the next business day after the auction.

 

The Preferred Shares are redeemable, in whole or in part, at the option of the Fund on the second business day prior to any date dividends are paid on the Preferred Shares, and will be subject to mandatory redemption in certain circumstances at a redemption price of $25,000 per share, plus accumulated, unpaid dividends to the date of redemption, plus a premium in certain circumstances.

 

The Preferred Shares will not be listed on an exchange. You may only buy or sell Preferred Shares through an order placed at an auction with or through a broker-dealer that has entered into an agreement with the auction agent and the Fund or in a secondary market maintained by certain broker-dealers. These broker-dealers are not required to maintain this market, and it may not provide you with liquidity.

 

The Preferred Shares do not represent a deposit or obligation of, and are not guaranteed or endorsed by, any bank or other insured depository institution and are not federally insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.

 

You should read this prospectus, which contains important information about the Fund, before deciding whether to invest in the Preferred Shares, and retain it for future reference. A statement of additional information, dated September 14, 2007, containing additional information about the Fund, has been filed with the Securities and Exchange Commission (the “Commission”) and is incorporated by reference in its entirety into this prospectus. You may request a free copy of the statement of additional information, the table of contents of which is on page 68 of this prospectus, or the Fund’s annual and semi-annual report by calling 1-800-582-6959 or by writing to the Fund. The Fund’s annual and semi-annual reports will also be available on its website at www.calamos.com, which will also provide a link to the Commission’s website described below where the Fund’s statement of additional information may be obtained. Information on our website does not form a part of this prospectus. You can review and copy documents the Fund has filed at the Commission’s Public Reference Room in Washington, D.C. Call 1-202-551-8090 for information. The Commission charges a fee for copies. You can get the same information free from the Commission’s EDGAR database on the Internet (http://www.sec.gov). You may also e-mail requests for these documents to publicinfo@sec.gov or make a request in writing to the Commission’s Public Reference Section, Washington, D.C. 20549-0213.

 

You should rely only on the information contained in or incorporated by reference in this prospectus. We have not, and the underwriters have not, authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted.

 

 

 

TABLE OF CONTENTS

 

 

 

 

The Fund		Calamos Global Dynamic Income Fund is a recently organized, diversified, closed-end management investment company. Throughout the prospectus, we refer to Calamos Global Dynamic Income Fund as the “Fund” or as “we,” “us,” or “our.” See “The Fund.” The Fund’s common shares are traded on the New York Stock Exchange under the symbol “CHW.” As of August 31, 2007, the Fund had 59,006,992 common shares outstanding and net assets of $830,568,440. The Fund’s principal offices are located at 2020 Calamos Court, Naperville, Illinois 60563.
The Offering		We are offering 2,800 shares of each of Series M, Series T, Series W, Series TH and Series F Auction Rate Cumulative Preferred Shares, each at a purchase price of $25,000 per share. The Preferred Shares are offered through Wachovia Capital Markets, LLC, Citigroup Global Markets Inc., H&R Block Financial Advisors, Inc., RBC Capital Markets Corporation and Stifel, Nicolaus & Company, Incorporated.
		The Preferred Shares entitle their holders to receive cash dividends at an annual rate that may vary for the successive dividend periods for the Preferred Shares. In general, except as described under “— Dividends and Dividend Periods” below and “Description of Preferred Shares — Dividends and Dividend Periods,” the dividend period for the Series M, Series T, Series W, Series TH and Series F Preferred Shares will be seven days. The auction agent will determine the dividend rate for a particular period by an auction conducted on the business day immediately prior to the start of that dividend period. See “The Auction.”
		Generally, investors in Preferred Shares will not receive certificates representing ownership of their shares. The securities depository (The Depository Trust Company or any successor) or its nominee for the account of the investor’s broker-dealer will maintain record ownership of Preferred Shares in book-entry form. An investor’s broker-dealer, in turn, will maintain records of that investor’s beneficial ownership of Preferred Shares.
Investment Objective		The Fund’s investment objective is to generate a high level of current income, with a secondary objective of capital appreciation. There can be no assurance that the Fund will achieve its investment objective. See “The Fund’s Investments — Investment Objective.”
Investment Policies		Primary Investments.  Under normal circumstances, the Fund will invest primarily in a globally diversified portfolio of convertible securities, common and preferred stocks, and income-producing securities such as investment grade and below investment grade (high yield/high risk) debt securities. The Fund may use other income-producing strategies, including options, swaps and

		other derivative instruments, for both investment and hedging purposes. The Fund, under normal circumstances, will invest at least 40% of its managed assets in securities of foreign issuers in developed and emerging markets, including debt and equity securities of corporate issuers and debt securities of government issuers. “Managed assets” means the total assets of the Fund (including any assets attributable to any leverage that may be outstanding) minus the sum of accrued liabilities (other than debt representing financial leverage). For this purpose, the liquidation preference on any preferred shares will not constitute a liability.
		The Fund seeks to maintain a balanced approach to geographic portfolio diversification. The Fund may invest up to 100% of its managed assets in securities of foreign issuers, including debt and equity securities of corporate issuers and debt securities of government issuers, in developed and emerging markets.
		The Fund will use a number of investment strategies to achieve its objective and expects to invest in a wide variety of financial instruments. These instruments include global convertible, as well as “synthetic” convertible instruments. The Fund will also invest in global equities or equity-linked securities with high income potential. From time to time, the Fund expects to invest in Rule 144A securities, foreign exchange contracts or securities with imbedded foreign exchange hedges, and high yield bonds of companies rated BB or lower.
		Foreign Issuers.  The Fund may invest up to 100% of its managed assets in securities of foreign issuers in developed and emerging markets, including debt and equity securities of corporate issuers and debt securities of government issuers. A foreign issuer is a foreign government or company organized under the laws of a foreign country. See “The Fund’s Investments — Principal Investment Strategies — Foreign Securities.”
		Convertible Securities.  The Fund may invest in convertible securities. A convertible security is a debt security or preferred stock that is exchangeable for an equity security (typically of the same issuer) at a predetermined price (the “conversion price”). Depending upon the relationship of the conversion price to the market value of the underlying security, a convertible security may trade more like an equity security than a debt instrument. See “The Fund’s Investments — Principal Investment Strategies — Convertible Securities.”
		Synthetic Convertible Securities.  The Fund may invest in “synthetic” convertible securities. A synthetic convertible security is a financial instrument that is designed to simulate the characteristics of another instrument (i.e., a convertible security) through the combined features of a collection of other securities or assets. Calamos Advisors LLC, the Fund’s investment adviser (“Calamos”), may create a synthetic convertible security by combining separate securities that possess the two principal characteristics of a true convertible security, i.e., a fixed-income security (“fixed-income component,” which may be a convertible or non-

		convertible security) and the right to acquire an equity security (“convertible component”). The fixed-income component is achieved by investing in non-convertible, fixed-income securities such as bonds, preferred stocks and money market instruments. The convertible component is achieved by investing in warrants or options to buy common stock at a certain exercise price, or options on a stock index.
		The Fund may also invest in synthetic convertible securities created by third parties, typically investment banks. Synthetic convertible securities created by such parties may be designed to simulate the characteristics of traditional convertible securities or may be designed to alter or emphasize a particular feature. Traditional convertible securities typically offer stable cash flows with the ability to participate in capital appreciation of the underlying common stock. Because traditional convertible securities are exercisable at the option of the holder, the holder is protected against downside risk. Synthetic convertible securities may alter these characteristics by offering enhanced yields in exchange for reduced capital appreciation or less downside protection, or any combination of these features. Synthetic convertible instruments may include structured notes, equity-linked notes, mandatory convertibles and combinations of securities and instruments, such as a debt instrument combined with a forward contract. See “The Fund’s Investments — Principal Investment Strategies — Synthetic Convertible Securities.”
		Convertible Hedging.  The Fund may enhance income and protect against market risk by hedging a portion of the equity risk inherent in the convertible securities purchased for the Fund. This hedging is achieved by selling short some or all of the common stock issuable upon exercise of the convertible security. If the market price of the common stock increases above the conversion price on the convertible security, the price of the convertible security will increase. The Fund’s increased liability on the short position would, in whole or in part, reduce this gain. If the price of the common stock declines, any decline in the price of the convertible security would offset, in whole or in part, the Fund’s gain on the short position. The Fund profits from this strategy by receiving interest and/or dividends on the convertible security and by adjusting the amount of equity risk that is hedged by short sales. In determining the appropriate portion of the Fund’s equity exposure to hedge, Calamos may consider the general outlook for interest rates and equity markets, the availability of stock to sell short and expected returns and volatility. See “The Fund’s Investments — Principal Investment Strategies — Short Sales.”
		High Yield Securities.  The Fund may invest in high yield securities for either current income or capital appreciation or both. These securities are rated Ba or lower by Moody’s or BB or lower by S&P or are unrated securities of comparable quality as determined by Calamos. The Fund may not invest in debt securities rated lower than C. Non-convertible debt securities rated below

		investment grade are commonly referred to as “junk bonds” and are considered speculative with respect to the issuer’s capacity to pay interest and repay principal. They involve greater risk of loss, are subject to greater price volatility and are less liquid, especially during periods of economic uncertainty or change, than higher rated securities. See “The Fund’s Investments — Principal Investment Strategies — High Yield Securities.”
		Options.  The Fund may also seek to generate income from option premiums by writing (selling) options. The Fund may write (sell) call options (i) on a portion of the equity securities (including securities that are convertible into equity securities) in the Fund’s portfolio and (ii) on broad-based securities indices (such as the S&P 500 or MSCI EAFE) or certain ETFs (exchange-traded funds) that trade like common stocks but seek to replicate such market indices. The Fund may purchase put or call options on stocks, indices, rates, credit spreads or currencies. The Fund may also sell call or put options on single stocks, credits or indices for hedging purposes. As the Fund writes covered calls over more of its portfolio, its ability to benefit from capital appreciation becomes more limited and the risk of net asset value erosion increases. If the Fund experiences net asset value erosion, which itself may have an indirect negative effect on the market price of the Fund’s shares, the Fund will have a reduced asset base over which to write covered calls, which may eventually negatively impact the Fund’s ability to make dividend payments on the Preferred Shares. Because all calls written by the Fund will be “covered,” even though the Fund will receive the option premium to help protect against loss, a call sold by the Fund exposes the Fund during the term of the option to possible loss of opportunity to realize appreciation in the market price of the underlying security or instrument as well as the obligation to deliver these overlaid securities at a predetermined price, thereby resulting in a potential for net asset value erosion. See “The Fund’s Investments — Principal Investment Strategies — Options.”
		Equity Securities.  Equity securities include common and preferred stocks, warrants, rights, and depository receipts. An investment in the equity securities of a company represents a proportionate ownership interest in that company. Therefore, the Fund participates in the financial success or failure of any company in which it has an equity interest. See “The Fund’s Investments — Principal Investment Strategies — Equity Securities.”
		Short Sales.  The Fund may engage in short sales of securities. When the Fund takes a short position, it sells at the current market price a stock that it does not own and has borrowed in anticipation of a decline in the value of the stock. To complete, or close out, the short sale transaction, the Fund buys the same security in the market and returns it to the lender. The Fund makes money if the market price of the borrowed security goes down and the Fund is able to replace the security for less than it earned by selling short. The Fund loses money if the stock price goes up after the short sale and before the position is closed out. The

		Fund will enter into short sales only with respect to common stock that it owns or that is issuable upon conversion of convertible securities held by the Fund. See “The Fund’s Investments — Principal Investment Strategies — Short Sales.”
		Swaps and Related Swap Products.  The Fund may engage in various swap transactions. Swap agreements are two party contracts entered into primarily by institutional investors for periods ranging typically from three to ten years, although shorter or longer periods do exist. Swap transactions will be based on financial assets including interest rates, currencies, securities indices, securities baskets, specific securities, fixed income sectors, commodity swaps, asset-backed swaps, interest rate caps, floors and collars and options on interest rate swaps (collectively defined as “swap transactions”).
		The Fund may enter into swap transactions for any legal purpose consistent with its investment objective and policies, such as for the purpose of attempting to obtain or preserve a particular return or spread at a lower cost than obtaining that return or spread through purchases and/or sales of instruments in cash markets, to protect against currency fluctuations, to protect against any increase in the price of securities the Fund anticipates purchasing at a later date, or to gain exposure to certain markets in the most economical way possible. The Fund intends to use swaps to a significant degree, subject to the asset coverage requirements of the Investment Company Act of 1940, as amended (the “1940 Act”), and other limitations contained in the Internal Revenue Code of 1986, as amended (the “Code”). See “The Fund’s Investments — Principal Investment Strategies — Swap and Related Swap Products.”
		Credit Default Swaps.  The Fund may also engage in credit default swap transactions. In the case of a credit default swap (“CDS”), the contract gives one party (the buyer) the right to recoup the economic value of a decline in the value of debt securities of the reference issuer if the credit event (including default or restructuring) occurs. This value is obtained by delivering a debt security of the reference issuer to the party in return for a previously agreed payment from the other party (frequently, the par value of the debt security) or by cash settlement of the transaction.
		The Fund may also enter into contracts on baskets or indices of securities (“CDX”). Credit default swaps may require initial premium (discount) payments as well as periodic payments (receipts) related to the interest leg of the swap or to the default of a reference obligation. See “The Fund’s Investments — Principal Investment Strategies — Credit Default Swaps.”
		Other Securities.  The Fund may invest in other securities of various types to the extent consistent with its investment objectives. Normally, the Fund invests substantially all of its assets to meet its investment objective. For temporary defensive purposes, the Fund may depart from its principal investment strategies and

		invest part or all of its assets in securities with remaining maturities of less than one year or cash equivalents, or may hold cash. During such periods, the Fund may not be able to achieve its investment objective. See “The Fund’s Investments — Principal Investment Strategies.”
Use of Leverage by the Fund		The Fund may, but is not required to, use leverage for investment purposes. In addition to issuing Preferred Shares, the Fund may borrow money or issue debt securities such as commercial paper or notes. Throughout the prospectus, borrowing money and issuing debt securities may be collectively referred to as “Borrowings.” Any Borrowings will have seniority over Preferred Shares, and payments to holders of Preferred Shares in liquidation or otherwise will be subject to the prior payment of any Borrowings. As a non-fundamental policy, financial leverage (the total liquidation preference of Preferred Shares or other preferred shares and principal amount of any Borrowings) may not exceed 38% of the Fund’s total assets. However, the Board of Trustees reserves the right to issue preferred shares and Borrowings to the extent permitted by the 1940 Act. Because Calamos’ management fee is based upon a percentage of the Fund’s managed assets, which include assets attributable to any outstanding leverage, the investment management fee will be higher if the Fund is leveraged and Calamos will have an incentive to leverage the Fund. Calamos intends to leverage the Fund only when it believes that the potential return on such additional investments is likely to exceed the costs incurred in connection with the leverage. See “Leverage.”
Interest Rate Transactions		In order to seek to reduce the interest rate risk inherent in the Fund’s underlying investments and capital structure, the Fund, if market conditions are deemed favorable, may enter into interest rate swap or cap transactions to attempt to protect itself from increasing dividend or interest expenses on its leverage. The use of interest rate swaps and caps is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio security transactions. There is no assurance that interest rate swap or cap transactions will be successful.
		In an interest rate swap, the Fund would agree to pay to the other party to the interest rate swap (which is known as the “counterparty”) a fixed rate payment in exchange for the counterparty agreeing to pay to the Fund a payment at a variable rate that is expected to approximate the rate on any variable rate payment obligation on the Fund’s leverage. The payment obligations would be based on the notional amount of the swap. The Fund’s payment obligations under the swap are general unsecured obligations of the Fund and are ranked senior to distributions applicable to the common shares and the Preferred Shares.
		In an interest rate cap, the Fund would pay a premium to the counterparty to the interest rate cap and, to the extent that a specified variable rate index exceeds a predetermined fixed rate, would receive from the counterparty payments of the difference

		based on the notional amount of such cap. If the counterparty to an interest rate swap or cap defaults, the Fund would be obligated to make the payments that it had intended to avoid. Depending on the state of interest rates in general, this default could negatively impact the Fund’s ability to make dividend payments on the Preferred Shares.
		In addition, at the time an interest rate swap or cap transaction reaches its scheduled termination date, there is a risk that the Fund would not be able to obtain a replacement transaction or that the terms of the replacement would not be as favorable as on the expiring transaction. If this occurs, it could have a negative impact on the Fund’s ability to make dividend payments on the Preferred Shares or interest payments on Borrowings. If the Fund fails to meet an asset coverage ratio required by law or if the Fund does not meet a rating agency guideline in a timely manner, the Fund may be required to redeem some or all of the Preferred Shares. See “Redemption” below. Similarly, the Fund could be required to prepay the principal amount of Borrowings, if any. Such redemption or prepayment would likely result in the Fund seeking to terminate early all or a portion of any swap or cap transaction. Early termination of a swap could result in a termination payment by or to the Fund. A termination payment by the Fund would result in a reduction in common share net earnings. Early termination of a cap could result in a termination payment to the Fund. The Fund intends to segregate cash or liquid securities having a value at least equal to the Fund’s net payment obligations under any swap transaction, marked-to-market daily. Under certain circumstances, the Fund may be required to pledge the assets in such segregated account to the counterparty.
		The Fund will not enter into interest rate swap or cap transactions having a notional amount that exceeds the outstanding amount of the Fund’s leverage. See “Interest Rate Transactions” for additional information.
Investment Adviser		Calamos is the Fund’s investment adviser. Calamos is responsible on a day-to-day basis for investment of the Fund’s portfolio in accordance with its investment objective and policies. Calamos makes all investment decisions for the Fund and places purchase and sale orders for the Fund’s portfolio securities. As of July 31, 2007, Calamos managed approximately $43.4 billion in assets of individuals and institutions. Calamos is a wholly owned subsidiary of Calamos Holdings LLC (“Holdings”) and an indirect subsidiary of Calamos Asset Management, Inc., a publicly traded holding company.
		The Fund pays Calamos an annual fee, payable monthly, for its investment management services equal to 1.00% of the Fund’s average weekly managed assets. “Managed assets” means the total assets of the Fund (including any assets attributable to any leverage that may be outstanding) minus the sum of accrued liabilities (other than debt representing financial leverage). See “Management of the Fund.”

Portfolio Manager		Calamos employs a team approach to portfolio management, with teams led by the Co-Chief Investment Officers (the “Co-CIOs”) and comprised generally of the Co-CIOs, senior strategy analysts, intermediate analysts and junior analysts. The Co-CIOs and senior strategy analysts are supported by and lead a team of investment professionals whose valuable contributions create a synergy of expertise that can be applied across many different investment strategies.
		Portfolio holdings are reviewed and trading activity is discussed on a regular basis by team members. Team members generally may make trading decisions guided by the Fund’s investment objective and strategy.
Fund Accounting		State Street Bank and Trust Company (“State Street”) and Calamos provide fund accounting and financial accounting services to the Fund.
Risk Factors Summary		Risk is inherent in all investing. Therefore, before investing in the Preferred Shares you should consider certain risks carefully. The primary risks of investing in the Preferred Shares are:
		• fluctuations in short-term and/or long-term interest rates may negatively impact the Fund’s ability to pay dividends on the Preferred Shares and may also negatively impact the value of the Fund’s investment portfolio;
		• the Fund will not be permitted to declare dividends or other distributions with respect to your Preferred Shares or redeem your Preferred Shares unless the Fund meets certain asset coverage requirements;
		• if you try to sell your Preferred Shares between auctions you may not be able to sell any or all of your shares or you may not be able to sell them for $25,000 per share or $25,000 per share plus accumulated dividends. If the Fund has designated a special dividend period, changes in interest rates could affect the price you would receive if you sold your shares in the secondary market. You may transfer shares outside of an auction only to or through a broker-dealer that has entered into an agreement with the auction agent and the Fund or other person as the Fund permits;
		• if an auction fails you may not be able to sell some or all of your shares;
		• if you place a bid order to retain Preferred Shares at an auction only at a specified rate, and that specified rate exceeds the rate set at the auction, you will not retain your Preferred Shares. If you submit a hold order for Preferred Shares and the auction sets a below-market rate, you may receive a below-market rate for your Preferred Shares;
		• because of the nature of the market for Preferred Shares, you may receive less than the price you paid for your shares if you sell them outside of the auction, especially when market interest rates are rising;

		• a rating agency could downgrade the rating assigned to the Preferred Shares, which could affect liquidity;
		• the Fund may be forced to redeem your shares to meet regulatory or rating agency requirements or may voluntarily redeem your shares in certain circumstances at a time when it is not advantageous to you;
		• in certain circumstances, the Fund may not earn sufficient income from its investments to pay dividends;
		• the Preferred Shares will be junior in liquidation and with respect to distribution rights to principal and interest payments on any Borrowings;
		• any Borrowing may constitute a substantial lien and burden on the Preferred Shares by reason of its priority claim against the income of the Fund and against the net assets of the Fund in liquidation;
		• if the Fund leverages through Borrowings, the Fund may not be permitted to declare dividends or other distributions with respect to the Preferred Shares or purchase Preferred Shares unless at the time thereof the Fund meets certain asset coverage requirements and the payments of principal and of interest on any such Borrowings are not in default;
		• the value of the Fund’s investment portfolio may decline, reducing the asset coverage for the Preferred Shares. See “Risk Factors — General Risks of Investing in the Fund” for a discussion of the general risks of the Fund’s investment portfolio; and
		• certain events have a disruptive effect on the securities markets, such as terrorist attacks, war and other geopolitical events, earthquakes, storms and other disasters. The Fund cannot predict the effects of similar events in the future on the markets or economy of the U.S. or other countries. Similar disruptions of the financial markets could impact interest rates, auctions, secondary trading, ratings, credit risk, inflation and other factors relating to securities or other financial interests.
		In addition to the risks associated with investing in the Preferred Shares, an investor in the Preferred Shares will also be subject to the general risks associated with the Fund’s investment policies, including the risks associated with foreign securities, convertible securities, high yield securities, equity securities and options. For additional information about the risks of investing in Preferred Shares and in the Fund, see “Risk Factors.”
Trading Market		The Preferred Shares will not be listed on an exchange. Instead, you may buy or sell the Preferred Shares at an auction that normally is held every seven days by submitting orders to a broker-dealer that has entered into an agreement with the auction agent and the Fund (a “Broker-Dealer”), or to a broker-dealer that has entered into a separate agreement with a Broker-Dealer. In addition to the auctions, Broker-Dealers and other broker-dealers may maintain a secondary trading market in Preferred Shares outside

		of auctions, but may discontinue this activity at any time. There is no assurance that a secondary market will be created or, if created, that it will provide shareholders with liquidity or that the trading price in any secondary market would be $25,000. You may transfer shares outside of auctions only to or through a Broker-Dealer or a broker-dealer that has entered into a separate agreement with a Broker-Dealer.
		The table below shows the first auction date for the Preferred Shares and the day of the week on which each subsequent auction, if any, will normally be held. The first auction date for the Preferred Shares will be the business day before the dividend payment date for the initial dividend period. The start date for subsequent dividend periods will normally be the business day following the auction date unless the then-current dividend period is a special dividend period or the first day of the subsequent dividend period is not a business day.

Dividends and Dividend Periods		The table below shows the initial dividend rate, the initial dividend payment date and the day of the week upon which subsequent dividends, if any, will be paid for the Preferred Shares and the number of days for the initial dividend period on the Preferred Shares offered in this prospectus. For subsequent dividend periods, the Preferred Shares will pay dividends based on a rate set at auctions, normally held every seven days. In most instances, dividends are payable on the first business day following the end of the dividend period. The rate set at auctions will not exceed the maximum rate. See “Description of Preferred Shares — Dividends and Dividend Periods.”

Date of

Dividend Payment

Subsequent

Number of

Initial

Accumulation

Date for Initial

Dividend

Days of Initial

Series

Dividend Rate

at Initial Rate

Dividend Period

Payment Day

Dividend Period

M

6.10

%

September 18, 2007

September 25, 2007

Tuesday

7

T

6.10

%

September 18, 2007

September 26, 2007

Wednesday

8

W

6.10

%

September 18, 2007

September 27, 2007

Thursday

9

TH

6.10

%

September 18, 2007

September 28, 2007

Friday

10

F

6.10

%

September 18, 2007

October 1, 2007

Monday

13

		Dividends on the Preferred Shares will be cumulative from the date the shares are first issued and will be paid out of legally available funds.
		The Fund may, subject to certain conditions, designate special dividend periods of more than seven days. A requested special dividend period will not be effective unless sufficient clearing bids were made in the auction immediately preceding the special dividend period. In addition, full cumulative dividends, any

		amounts due with respect to mandatory redemptions and any additional dividends payable prior to such date must be paid in full. In addition, the Fund does not intend to designate a special dividend period if such designation would adversely affect Fitch’s or S&P’s or any substitute rating agency’s then-current rating on the Preferred Shares. The dividend payment date for special dividend periods will be set out in the notice designating a special dividend period. See “Description of Preferred Shares — Dividends and Dividend Periods — Designation of Special Dividend Periods” and “The Auction.”
Determination of Maximum Rate		Except during a default period, the applicable rate for any dividend period for Preferred Shares will not be more than the maximum rate. The maximum rate for the Preferred Shares will depend on the credit rating assigned to such Preferred Shares and on the duration of the dividend period. The maximum rate will be the applicable percentage of the reference rate. The reference rate is the applicable LIBOR rate (for a dividend period of fewer than 365 days) or the applicable Treasury index rate (for a dividend period of 365 days or more). The applicable percentage is further subject to upward but not downward adjustment at the discretion of the Board of Trustees after consultation with the Broker-Dealers.
		There is no minimum rate in respect of any dividend period. See “Description of Preferred Shares — Dividends and Dividend Periods.”
Ratings		The Fund will issue Preferred Shares only if such shares have received a credit quality rating of “AAA” from Fitch and “AAA” from S&P. These ratings are an assessment of the capacity and willingness of an issuer to pay preferred stock obligations. The ratings are not a recommendation to purchase, hold or sell those shares inasmuch as the ratings do not comment as to market price or suitability for a particular investor. The ratings described above also do not address the likelihood that an owner of Preferred Shares will be able to sell such shares in an auction or otherwise. The ratings are based on current information furnished to Fitch and S&P by the Fund and Calamos and information obtained from other sources. The ratings may be changed, suspended or withdrawn in the rating agencies’ discretion as a result of changes in, or the unavailability of, such information. See “Description of Preferred Shares — Rating Agency Guidelines.”
Asset Maintenance		Under the Fund’s Statement of Preferences for Preferred Shares (the “Statement”), which establishes and fixes the rights and preferences of the shares of each series of Preferred Shares, the Fund must maintain:
		• asset coverage of the Preferred Shares as required by the rating agency or agencies rating the Preferred Shares; and
		• asset coverage of at least 200% with respect to senior securities that are stock, including the Preferred Shares.

		In the event that the Fund does not maintain or cure failures to maintain these coverage tests, some or all of the Preferred Shares will be subject to mandatory redemption. See “Description of Preferred Shares — Redemption.” Based on the composition of the Fund’s portfolio as of August 31, 2007, the asset coverage of the Preferred Shares as measured pursuant to the 1940 Act would be approximately 336% if the Fund were to issue all of the Preferred Shares offered in this prospectus, representing approximately 30% of the Fund’s managed assets.
Restrictions on Dividends, Redemption and Other Payments		If the Fund issues any Borrowings that constitute senior securities representing indebtedness (as defined in the 1940 Act), under the 1940 Act, the Fund would not be permitted to declare any dividend on Preferred Shares unless, after giving effect to such dividend, asset coverage with respect to the Fund’s Borrowings that constitute senior securities representing indebtedness, if any, is at least 200%. In addition, the Fund would not be permitted to declare any distribution on or purchase or redeem Preferred Shares unless, after giving effect to such distribution, purchase or redemption, asset coverage with respect to the Fund’s Borrowings that constitute senior securities representing indebtedness, if any, is at least 300%. Dividends or other distributions on, or redemptions or purchases of, Preferred Shares may also be prohibited (i) at any time when an event of default under any Borrowing has occurred and is continuing; (ii) after giving effect to such distribution or redemption, the Fund would not have eligible portfolio holdings with an aggregated discounted value at least equal to any asset coverage requirements associated with such Borrowings; or (iii) the Fund has not redeemed the full amount of Borrowings, if any, required to be redeemed by any provision for mandatory redemption. See “Description of Preferred Shares — Restrictions on Dividend, Redemption and Other Payments.”
Redemption		The Fund may be required to redeem shares if, for example, the Fund does not meet an asset coverage ratio required by law or does not correct a failure to meet a rating agency guideline in a timely manner. The Fund may redeem Preferred Shares voluntarily under certain conditions. See “Description of Preferred Shares — Redemption” and “Description of Preferred Shares — Rating Agency Guidelines.”
Liquidation Preference		The liquidation preference for the Preferred Shares will be $25,000 per share plus accumulated but unpaid dividends, if any, whether or not declared. See “Description of Preferred Shares — Liquidation.”
Voting Rights		Except as otherwise indicated, holders of Preferred Shares have one vote per share. The holders of preferred shares, including Preferred Shares, voting as a separate class, have the right to elect at least two trustees of the Fund at all times. The Board of Trustees will determine to which class or classes the Trustees elected by the holders of Preferred Shares will be assigned. The holders of the Preferred Shares will only be entitled to elect the Trustees so designated, when their term will have expired. Such Trustees

		appointed by the holders of Preferred Shares will be allocated as evenly as possible among the classes of Trustees. Holders of preferred shares, including Preferred Shares, also have the right to elect a majority of the trustees in the event that two years’ dividends on the preferred shares are unpaid. In each case, the remaining trustees will be elected by holders of common shares and preferred shares, including Preferred Shares, voting together as a single class. The holders of preferred shares, including Preferred Shares, will vote as a separate class or classes on certain other matters as required under the Fund’s Agreement and Declaration of Trust, the 1940 Act and Delaware law. See “Description of Preferred Shares — Voting Rights,” and “Certain Provisions in the Agreement and Declaration of Trust and By-Laws.”
Federal Income Taxes		Distributions with respect to the Preferred Shares will generally be subject to U.S. federal income taxation. A portion of such distributions may qualify for the dividends received deduction available to corporate holders or for treatment as “qualified dividend income” available to individual and other noncorporate holders. The Internal Revenue Service (“IRS”) currently requires that a regulated investment company, which has two or more classes of stock, allocate to each such class proportionate amounts of each type of its income (such as ordinary income and capital gain) based upon the percentage of total dividends distributed to each class for the tax year. Accordingly, the Fund intends each year to allocate ordinary income dividends, capital gain dividends, dividends qualifying for the dividends received deduction and qualified dividend income, if any, between its common shares and the Preferred Shares in proportion to the total dividends paid to each class during or with respect to such tax year. See “U.S. Federal Income Tax Matters.”
Custodian, Auction Agent, Transfer Agent, Dividend Paying Agent and Registrar		The Bank of New York serves as custodian of the Fund’s securities and cash. The Bank of New York also serves as auction agent with respect to the Preferred Shares, and transfer agent, dividend paying agent and registrar for the Fund’s common shares and the Preferred Shares.

 

FINANCIAL HIGHLIGHTS (unaudited)

 

Information contained in the table below shows the unaudited operating performance of the Fund for the period from June 27, 2007 through July 31, 2007. Because the Fund is recently organized and commenced operations on June 27, 2007, the table covers approximately one month of operations, during which a substantial portion of the Fund’s portfolio was held in temporary investments pending investment in securities that meet the Fund’s investment objective and policies. Accordingly, the information presented may not provide a meaningful picture of the Fund’s future operating performance.

 

 

 

 

 

THE FUND

 

Calamos Global Dynamic Income Fund is a recently organized, diversified, closed-end management investment company. The Fund was organized under the laws of the State of Delaware on April 10, 2007, and has registered under the 1940 Act. On June 29, 2007, the Fund issued an aggregate of 56,000,000 common shares of beneficial interest, no par value, pursuant to the initial public offering of its common shares and commenced its investment operations. The Fund granted the underwriters an option to purchase up to 7,665,000 additional common shares at the public offering price less the sales load. On July 20, 2007, the Fund issued 3,000,000 additional common shares in connection with the underwriters’ partial exercise of the over-allotment option. The Fund’s common shares are traded on the New York Stock Exchange under the symbol “CHW.” The Fund’s principal office is located at 2020 Calamos Court, Naperville, Illinois 60563, and its telephone number is 1-800-582-6959.

 

The following provides information about the Fund’s authorized and outstanding shares as of July 31, 2007.

 

 

USE OF PROCEEDS

 

The Fund estimates the net proceeds of the offering of Preferred Shares, after payment of sales load and offering expenses, will be approximately $346,145,255. The Fund will invest the net proceeds of the offering in accordance with the Fund’s investment objective and policies as stated below. It is presently anticipated that the Fund will invest substantially all of the net proceeds in securities that meet the investment objective and policies within three months after completion of this offering. Pending such investment, the Fund anticipates that all or a portion of the proceeds will be invested in U.S. government securities or high-grade, short-term money market instruments. If necessary, the Fund may also purchase, as temporary investments, securities of other open- or closed-end investment companies that invest primarily in the types of securities in which the Fund may invest directly. See “The Fund’s Investments.”

 

CAPITALIZATION (UNAUDITED)

 

The following table sets forth the capitalization of the Fund as of August 31, 2007, and as adjusted, to give effect to the issuance of all the Preferred Shares offered hereby (including estimated offering expenses and sales load of $3,854,745). The sales load and offering expenses of the Preferred Shares will be effectively borne by common shareholders.

 

 

 

 

PORTFOLIO COMPOSITION

 

As of July 31, 2007, approximately 47% of the market value of the Fund’s portfolio was invested in equities and approximately 36% of the market value was invested in convertible securities and high yield debt securities and approximately 17% of the market value of the Fund’s portfolio was invested in short-term investment grade debt securities. In addition, as of July 31, 2007, approximately 40% of the market value of the Fund’s portfolio was invested in securities of foreign issuers. The following table sets forth certain information with respect to the composition of the Fund’s investment portfolio as of July 31, 2007, based on the highest rating assigned each investment by either Moody’s or S&P.

 

 

 

 

THE FUND’S INVESTMENTS

 

Investment Objective

 

The Fund’s investment objective is to generate a high level of current income, with a secondary objective of capital appreciation. The Fund’s investment objective may be changed by the Board of Trustees without a shareholder vote, except that the Fund will give shareholders at least 60 days’ notice of any change to the Fund’s investment objective. The Fund makes no assurance that it will realize its objective. An investment in the Fund may be speculative in that it involves a high degree of risk and should not constitute a complete investment program. See “Risk Factors.”

 

Principal Investment Strategies

 

Under normal circumstances, the Fund will invest primarily in a globally diversified portfolio of convertible instruments, common and preferred stocks, and income-producing securities such as investment grade and below investment grade (high yield/high risk) debt securities. The Fund may also incorporate other income-producing strategies, including options, swaps and other derivative instruments, for both investment and hedging purposes. The Fund, under normal circumstances, will invest at least 40% of its managed assets in securities of foreign issuers in developed and emerging markets, including debt and equity securities of corporate issuers and debt securities of government issuers.

 

The Fund will maintain a balanced approach to geographic portfolio diversification. The Fund may invest up to 100% of its managed assets in securities of foreign issuers in developed and emerging markets, including debt and equity securities of corporate issuers and debt securities of government issuers.

 

The Fund will use a number of investment strategies to achieve its objectives and expects to invest in a wide variety of financial instruments. These instruments include global convertible, exchangeable instruments, as well as “synthetic” convertible instruments. The Fund will also invest in global equities or equity-linked securities with high income potential. From time to time, the Fund expects to invest in Rule 144A securities, foreign exchange contracts or securities with imbedded foreign exchange hedges, and high yield bonds of companies rated BB or lower.

 

In general, the Fund intends to seek out companies with a long-term track record of high dividend payout consistent with dividend growth. In certain circumstances, the Fund may invest in underlying companies it believes have substantial prospects for price appreciation even if the there is little or no dividend growth potential. The Fund may from time to time, seek to sell index options or single stock options (either listed or “over the counter”) to enhance the overall yield of the Fund or, in the opinion of the Adviser, reduce portfolio volatility. The Fund may purchase options to hedge or engage in other hedging activities including the purchase or sale of futures, swaps or options on equities, indices, currencies, interest rates or credits.

 

Foreign Securities.  The Fund may invest up to 100% of its managed assets in securities of foreign issuers in developed and emerging markets, including debt and equity securities of corporate issuers and debt securities of government issuers. A foreign issuer is a foreign government or company organized under the laws of a foreign country.

 

Convertible Securities.  A convertible security is a debt security or preferred stock that is exchangeable for an equity security (typically of the same issuer) at a predetermined price. Depending upon the relationship of the conversion price to the market value of the underlying security, a convertible security may trade more like an equity security than a debt instrument. The Fund may invest in convertible securities of any rating.

 

Synthetic Convertible Securities.  The Fund may invest in “synthetic” convertible securities. A synthetic convertible security is a financial instrument that is designed to simulate the characteristics of another instrument (i.e., a convertible security) through the combined features of a collection of other securities or assets. Calamos may create a synthetic convertible security by combining separate securities that possess the two principal characteristics of a true convertible security, i.e., a fixed-income security

(“fixed-income component,” which may be a convertible or non-convertible security) and the right to acquire an equity security (“convertible component”). The fixed-income component is achieved by investing in non-convertible, fixed-income securities such as bonds, preferred stocks and money market instruments. The convertible component is achieved by investing in warrants or options to buy common stock at a certain exercise price, or options on a stock index. The Fund may also purchase synthetic convertible securities created by other parties, typically investment banks, including convertible structured notes. Convertible structured notes are fixed income debentures linked to equity. Convertible structured notes have the attributes of a convertible security, however, the investment bank that issued the convertible note assumes the credit risk associated with the investment, rather than the issuer of the underlying common stock into which the note is convertible. Different companies may issue the fixed-income and convertible components, which may be purchased separately and at different times.

 

The Fund may also invest in synthetic convertible securities created by third parties, typically investment banks. Synthetic convertible securities created by such parties may be designed to simulate the characteristics of traditional convertible securities or may be designed to alter or emphasize a particular feature. Traditional convertible securities typically offer stable cash flows with the ability to participate in capital appreciation of the underlying common stock. Because traditional convertible securities are exercisable at the option of the holder, the holder is protected against downside risk. Synthetic convertible securities may alter these characteristics by offering enhanced yields in exchange for reduced capital appreciation or less downside protection, or any combination of these features. Synthetic convertible instruments may include structured notes, equity-linked notes, mandatory convertibles and combinations of securities and instruments, such as a debt instrument combined with a forward contract.

 

Some examples of these securities include:

 

Preferred equity redeemable cumulative stock (“PERCS”) are shares that automatically convert into one ordinary share upon maturity. They are usually issued at the prevailing share price, convertible into one ordinary share, with an enhanced dividend yield. PERCS pay a higher dividend than common shares, but the equity upside is capped. Above a certain share price, the conversion ratio will fall as the stock rises, capping the upside at that level. Below this level, the conversion ratio remains one-for-one, giving the same downside exposure as the ordinary shares, excluding the income difference.

 

Dividend enhanced convertible stock (“DECS”) are either preference shares or subordinated bonds. These, like PERCS, mandatorily convert into ordinary shares at maturity, if not already converted. DECS give no significant downside protection and are very equity sensitive with minimal direct bond characteristics and interest rate exposure. As with PERCS, some of the upside performance is given away and in return, the investor receives an enhanced yield over the ordinary shares. Unlike PERCS, however, the investor’s upside is not capped. Instead, the investor trades a zone of flat exposure to the share price for the enhanced income.

 

Preferred Redeemable Increased Dividend Equity Security (“PRIDES”) are synthetic securities consisting of a forward contract to purchase the issuer’s underlying security and an interest bearing deposit. Interest payments are made at regular intervals, and conversion into the underlying security is mandatory at maturity. Similar to convertible securities, PRIDES allow investors to earn stable cash flows while still participating in the capital gains of an underlying stock. This is possible because these products are valued along the same lines as the underlying security.

 

Convertible Hedging.  The Fund may enhance income and protect against market risk by hedging a portion of the equity risk inherent in the convertible securities purchased for the Fund. This hedging is achieved by selling short some or all of the common stock issuable upon exercise of the convertible security. If the market price of the common stock increases above the conversion price on the convertible security, the price of the convertible security will increase. The Fund’s increased liability on the short position would, in whole or in part, reduce this gain. if the price of the common stock declines, any decline in the price of the convertible security would offset, in whole or in part, the Fund’s gain on the short position. The Fund profits from this strategy by receiving interest and/or dividends on the convertible

security and by adjusting the amount of equity risk that is hedged by short sales. In determining the appropriate portion of the Fund’s equity exposure to hedge, Calamos may consider the general outlook for interest rates and equity markets, the availability of stock to sell short and expected returns and volatility.

 

High Yield Securities.  The Fund may invest in high yield securities without limit for either current income or capital appreciation or both. The high yield securities in which the Fund invests are rated Ba or lower by Moody’s or BB or lower by Standard & Poor’s or are unrated but determined by Calamos to be of comparable quality. The Fund may not invest in debt securities that are rated lower than C. If a debt security were downgraded to below a C rating subsequent to the Fund’s investment in the security, Calamos would review the investment to consider the downgrading, as well as other factors, and determine what action to take in the best interest of shareholders. Non-convertible debt securities rated below investment grade are commonly referred to as “junk bonds” and are considered speculative with respect to the issuer’s capacity to pay interest and repay principal. Below investment grade non-convertible debt securities involve greater risk of loss, are subject to greater price volatility and are less liquid, especially during periods of economic uncertainty or change, than higher rated debt securities.

 

Options Strategy.  The Fund may also seek to generate income from option premiums by writing (selling) options. The Fund may write (sell) call options (i) on a portion of the equity securities (including securities that are convertible into equity securities) in the Fund’s portfolio and (ii) on broad- based securities indices (such as the S&P 500 or MSCI EAFE) or certain ETFs (exchange traded funds) that trade like common stocks but seek to replicate such market indices. The Fund may sell, put or call options on stocks, indices, rates, credit spreads or currencies. The Fund may also sell call or put options on single stocks, credits or indices for hedging purposes. The Fund’s use of options is subject to the asset segregation requirements of the 1940 Act.

 

Options In General.  A call option, upon payment of a premium, gives the purchaser of the option the right to buy, and the seller the obligation to sell, the underlying security, index or other instrument at the exercise price. A put option gives the purchaser of the option, upon payment of a premium, the right to sell, and the seller the obligation to buy, the underlying security, index, or other instrument at the exercise price.

 

The Fund is authorized to purchase and sell exchange listed options and over-the-counter options (“OTC options”). Exchange listed options are issued by a regulated intermediary such as the Options Clearing Corporation (“OCC”), which guarantees the performance of the obligations of the parties to such options. In addition, the Fund may purchase instruments structured by broker-dealers or investment banks that package or possess economic characteristics of options. The discussion below uses the OCC as an example, but is also applicable to other financial intermediaries.

 

With certain exceptions, OCC issued and exchange listed options generally settle by physical delivery of the underlying security, although in the future cash settlement may become available. Index options are cash settled for the net amount, if any, by which the option is “in-the-money” (i.e., where the value of the underlying instrument exceeds, in the case of a call option, or is less than, in the case of a put option, the exercise price of the option) at the time the option is exercised. Frequently, rather than taking or making delivery of the underlying instrument through the process of exercising the option, listed options are closed by entering into offsetting purchase or sale transactions that do not result in ownership of the new option.

 

OTC options are purchased from or sold to securities dealers, financial institutions or other parties (“Counterparties”) through direct bilateral agreement with the Counterparty. In contrast to exchange listed options, which generally have standardized terms and performance mechanics, all the terms of an OTC option, including such terms as method of settlement, term, exercise price, premium, guarantees and security, are set by negotiation of the parties. The Fund may sell OTC options (other than OTC currency options) that are subject to a buy-back provision permitting the Fund to require the Counterparty to sell the option back to the Fund at a formula price within seven days. The Fund expects generally to enter into OTC options that have cash settlement provisions, although it is not required to do so. The staff of the Commission currently takes the position that OTC options purchased by a fund, and portfolio securities “covering” the amount of a fund’s obligation pursuant to an OTC option sold by it (or the amount of assets

equal to the formula price for the repurchase of the option, if any, less the amount by which the option is in-the-money) are illiquid. OTC options purchased by the Fund and any portfolio securities used to cover obligations pursuant to such options are not considered illiquid by Calamos for the purposes of the Fund’s limitation on investments in illiquid securities.

 

The Fund may also purchase and sell options on securities indices and other financial indices. Options on securities indices and other financial indices are similar to options on a security or other instrument except that, rather than settling by physical delivery of the underlying instrument, they settle by cash settlement, i.e., an option on an index gives the holder the right to receive, upon exercise of the option, an amount of cash if the closing level of the index upon which the option is based exceeds, in the case of a call, or is less than, in the case of a put, the exercise price of the option (except if, in the case of an OTC option, physical delivery is specified). This amount of cash is equal to the excess of the closing price of the index over the exercise price of the option, which also may be multiplied by a formula value. The seller of the option is obligated, in return for the premium received, to make delivery of this amount. The gain or loss on an option on an index depends on price movements in the instruments making up the market, market segment, industry or other composite on which the underlying index is based, rather than price movements in individual securities, as is the case with respect to options on securities.

 

The Fund will write call options and put options only if they are “covered.” For example, a call option written by the Fund will require the Fund to hold the securities subject to the call (or securities convertible into those securities without additional consideration) or to segregate cash or liquid assets sufficient to purchase and deliver the securities if the call is exercised. A call option sold by the Fund on an index will require the Fund to own portfolio securities that correlate with the index or to segregate cash or liquid assets equal to the excess of the index value over the exercise price on a current basis. A put option written by the Fund requires the Fund to segregate cash or liquid assets equal to the exercise price.

 

OTC options entered into by the Fund will generally provide for cash settlement. As a result, when the Fund sells those instruments it will only segregate an amount of cash or liquid assets equal to its accrued net obligations, as there is no requirement for payment or delivery of amounts in excess of the net amount. Those amounts will equal 100% of the exercise price in the case of a non cash-settled put, the same as an OCC guaranteed listed option sold by the Fund, or the in-the-money amount plus any sell-back formula amount in the case of a cash-settled put or call. In addition, when the Fund sells a call option on an index at a time when the in-the-money amount exceeds the exercise price, the Fund will segregate, until the option expires or is closed out, cash or cash equivalents equal in value to such excess. OTC options other than those above may also settle with physical delivery, or with an election of either physical delivery or cash settlement and the Fund will segregate an amount of cash or liquid assets equal to the full value of the option. OTC options settling with physical delivery, or with an election of either physical delivery or cash settlement, will be treated the same as other options settling with physical delivery.

 

If an option written by the Fund expires, the Fund will generally realize a short-term capital gain equal to the premium received at the time the option was written. If an option purchased by the Fund expires, the Fund realizes a capital loss equal to the premium paid, which will either be short-term or long-term depending on the Fund’s holding period for the option.

 

The Fund will generally realize a short-term capital gain from a closing purchase transaction if the cost of the closing option is less than the premium received from writing the option, or, if it is more, the Fund will generally realize a short-term capital loss. If the premium received from a closing sale transaction is more than the premium paid to purchase the option, the Fund will generally realize a short-term or long-term capital gain, depending on the Fund’s holding period for the option, or, if it is less, the Fund will generally realize a short-term or long-term capital loss, depending on the Fund’s holding period for the option. The principal factors affecting the market value of a put or a call option include supply and demand, interest rates, the current market price of the underlying security or index in relation to the exercise price of the option, the volatility of the underlying security or index, and the time remaining until the expiration date.

A put option purchased by the Fund is an asset of the Fund, valued initially at the premium paid for the option. The premium received for an option written by the Fund is recorded as a deferred credit. The value of an option purchased or written is marked-to-market daily and is valued at the closing price on the exchange on which it is traded or, if not traded on an exchange or no closing price is available, at the mean between the last bid and asked prices.

 

Equity Securities.  Equity securities include common and preferred stocks, warrants, rights, and depository receipts. An investment in the equity securities of a company represents a proportionate ownership interest in that company. Therefore, the Fund participates in the financial success or failure of any company in which it has an equity interest.

 

Short Sales.  The Fund may engage in short sales of securities. When the Fund takes a short position, it sells at the current market price a stock that it does not own and has borrowed in anticipation of a decline in the value of the stock. To complete, or close out, the short sale transaction, the Fund buys the same security in the market and returns it to the lender. The Fund makes money if the market price of the borrowed security goes down and the Fund is able to replace the security for less than it earned by selling short. The Fund loses money if the stock price goes up after the short sale and before the position is closed out. The Fund will enter into short sales only with respect to common stock that it owns or that is issuable upon conversion of convertible securities held by the Fund.

 

Swaps and Related Swap Products.  Swap transactions will be based on financial assets including interest rates, currencies, securities indices, securities baskets, specific securities, fixed income sectors, commodity swaps, asset-backed swaps, interest rate caps, floors and collars and options on interest rate swaps (collectively defined as “swap transactions”).

 

The Fund may enter into swap transactions for any legal purpose consistent with its investment objective and policies, such as for the purpose of attempting to obtain or preserve a particular return or spread at a lower cost than obtaining that return or spread through purchases and/or sales of instruments in cash markets, to protect against currency fluctuations, to protect against any increase in the price of securities the Fund anticipates purchasing at a later date, or to gain exposure to certain markets in the most economical way possible. The use of swap transactions by the Fund involves Calamos’ judgment with regard to future movements of the particular market underlying the particular swap transaction. The Fund intends to use swaps to a significant degree, subject to the asset coverage requirements of the 1940 Act and the Code.

 

Swap agreements are two-party contracts entered into primarily by institutional counterparties for periods ranging from a few weeks to several years. In a standard swap transaction, two parties agree to exchange the returns (or differentials in rates of return) that would be earned or realized on specified notional investments or instruments. The gross returns to be exchanged or “swapped” between the parties are calculated by reference to a “notional amount,” i.e., the return on or increase in value of a particular dollar amount invested at a particular interest rate, in a particular foreign currency or commodity, or in a “basket” of securities representing a particular index. The purchaser of an interest rate cap or floor, upon payment of a fee, has the right to receive payments (and the seller of the cap or floor is obligated to make payments) to the extent a specified interest rate exceeds (in the case of a cap) or is less than (in the case of a floor) a specified level over a specified period of time or at specified dates. The purchaser of an interest rate collar, upon payment of a fee, has the right to receive payments (and the seller of the collar is obligated to make payments) to the extent that a specified interest rate falls outside an agreed upon range over a specified period of time or at specified dates. The purchaser of an option on an interest rate swap, upon payment of a fee (either at the time of purchase or in the form of higher payments or lower receipts within an interest rate swap transaction) has the right, but not the obligation, to initiate a new swap transaction of a pre-specified notional amount with pre-specified terms with the seller of the option as the counterparty. The “notional amount” of a swap transaction is the agreed upon basis for calculating the payments that the parties have agreed to exchange. For example, one swap counterparty may agree to pay a floating rate of interest (e.g., 3 month LIBOR) calculated based on a $10 million notional amount on a quarterly basis in exchange for receipt of payments calculated based on the same notional amount and a

fixed rate of interest on a semi-annual basis. In the event the Fund is obligated to make payments more frequently than it receives payments from the other party, it will incur incremental credit exposure to that swap counterparty. This risk may be mitigated somewhat by the use of swap agreements which call for a net payment to be made by the party with the larger payment obligation when the obligations of the parties fall due on the same date. Under most swap agreements entered into by the Fund, payments by the parties will be exchanged on a “net basis,” and the Fund will receive or pay, as the case may be, only the net amount of the two payments.

 

The amount of the Fund’s potential gain or loss on any swap transaction is not subject to any fixed limit. Nor is there any fixed limit on the Fund’s potential loss if it sells a cap or collar. If the Fund buys a cap, floor or collar, however, the Fund’s potential loss is limited to the amount of the fee that it has paid. When measured against the initial amount of cash required to initiate the transaction, which is typically zero in the case of most conventional swap transactions, swaps, caps, floors and collars tend to be more volatile than many other types of instruments.

 

The use of swap transactions, caps, floors and collars involves investment techniques and risks that are different from those associated with portfolio security transactions. If Calamos is incorrect in its forecasts of market values, interest rates, and other applicable factors, the investment performance of the Fund will be less favorable than if these techniques had not been used. These instruments are typically not traded on exchanges. Accordingly, there is a risk that the other party to certain of these instruments will not perform its obligations to the Fund or that the Fund may be unable to enter into offsetting positions to terminate its exposure or liquidate its position under certain of these instruments when it wishes to do so.

 

Such occurrences could result in losses to the Fund. Calamos will consider such risks and will enter into swap and other derivatives transactions only when it believes that the risks are not unreasonable. The Fund will earmark and reserve the Fund assets, in cash or liquid securities, in an amount sufficient at all times to cover its current obligations under its swap transactions, caps, floors and collars. If the Fund enters into a swap agreement on a net basis, it will earmark and reserve assets with a daily value at least equal to the excess, if any, of the Fund’s accrued obligations under the swap agreement over the accrued amount the Fund is entitled to receive under the agreement. If the Fund enters into a swap agreement on other than a net basis, or sells a cap, floor or collar, it will earmark and reserve assets with a daily value at least equal to the full amount of the Fund’s accrued obligations under the agreement. The Fund will not enter into any swap transaction, cap, floor, or collar, unless the counterparty to the transaction is deemed creditworthy by Calamos. If a counterparty defaults, the Fund may have contractual remedies pursuant to the agreements related to the transaction. The swap markets in which many types of swap transactions are traded have grown substantially in recent years, with a large number of banks and investment banking firms acting both as principals and as agents utilizing standardized swap documentation. As a result, the markets for certain types of swaps (e.g., interest rate swaps) have become relatively liquid. The markets for some types of caps, floors and collars are less liquid.

 

During the term of a swap, cap, floor or collar, changes in the value of the instrument are recognized as unrealized gains or losses by marking to market to reflect the market value of the instrument. When the instrument is terminated, the Fund will record a realized gain or loss equal to the difference, if any, between the proceeds from (or cost of) the closing transaction and the Fund’s basis in the contract. The federal income tax treatment with respect to swap transactions, caps, floors, and collars may impose limitations on the extent to which the Fund may engage in such transactions.

 

Credit Default Swaps.  As described above, swap agreements are two party contracts entered into primarily by institutional investors for periods ranging typically from three to ten years, although shorter or longer periods do exist. In the case of a Credit Default Swap (“CDS”), the contract gives one party (the buyer) the right to recoup the economic value of a decline in the value of debt securities of the reference issuer if the credit event (including a default or restructuring) occurs. This value is obtained by delivering a debt security of the reference issuer to the party in return for a previously agreed payment from the other party (frequently, the par value of the debt security) or by cash settlement of the transaction.

The Fund may also enter into swap contracts based on baskets or indices of securities (“CDX”). A CDX index is an equally weighted credit default swap index. This family of indices is comprised of baskets of credit derivatives that are representative of certain market segments such as North American investment grade, high volatility investment grade, non-investment grade, as well as emerging markets. CDS of individual reference entities are selected for inclusion in the indices based on rating requirements and liquidity requirements. A CDX index tranche provides access to customized risk, exposing each investor to losses at different levels of subordination. The lowest part of the capital structure is called the “equity tranche” as it has exposure to the first losses experienced in the basket. The mezzanine and senior tranches are higher in the capital structure but can also be exposed to loss in value.

 

CDSs may require initial premium (discount) payments as well as periodic payments (receipts) related to the interest leg of the swap or to the default of a reference obligation.

 

If the Fund is a seller of a CDS contract, the Fund would be required to pay the par (or other agreed upon) value of a referenced debt obligation to the counterparty in the event of a default or other credit event by the reference issuer, such as a U.S. or foreign corporate issuer, with respect to such debt obligations. In return, the Fund would receive from the counterparty a periodic stream of payments over the term of the contract provided that no event of default has occurred. If no default occurs, the Fund would keep the stream of payments and would have no payment obligations. As the seller, the Fund would be subject to investment exposure on the notional amount of the swap. The Fund intends to maintain cash or liquid securities having a value at least equal to the Fund’s net payment obligation if the Fund is a seller of a CDS.

 

If the Fund is a buyer of a CDS contract, in the event of a default or other credit event (such as a credit downgrade) by the reference issuer, such as a U.S. or foreign corporation, with respect to its debt obligations, the Fund would have the right to deliver a referenced debt obligation and receive the par (or other agreed-upon) value of such debt obligation from the counterparty. In return, the Fund would pay the counterparty a periodic stream of payments over the term of the contract provided that no event of default has occurred. If no default occurs, the counterparty would keep the stream of payments and would have no further obligations to the Fund.

 

Rule 144A Securities.  The Fund may invest without limit in securities that have not been registered for public sale, but that are eligible for purchase and sale by certain qualified institutional buyers (“Rule 144A Securities”).

 

Other Debt Securities.  The Fund may also invest in investment grade debt securities. The Fund’s investments in investment grade debt securities may have fixed or variable principal payments and all types of interest rate and dividend payment and reset terms, including fixed rate, adjustable rate, contingent, deferred, payment in kind and auction rate features.

 

U.S. Government Securities.  U.S. government securities in which the Fund may invest include debt obligations of varying maturities issued by the U.S. Treasury or issued or guaranteed by an agency or instrumentality of the U.S. government, including the Federal Housing Administration, Federal Financing Bank, Farmers Home Administration, Export-Import Bank of the United States, Small Business Administration, Government National Mortgage Association, General Services Administration, Central Bank for Cooperatives, Federal Farm Credit Banks, Federal Home Loan Banks, Federal Home Loan Mortgage Corporation, Federal National Mortgage Association (“FNMA”), Maritime Administration, Tennessee Valley Authority, District of Columbia Armory Board, Student Loan Marketing Association, Resolution Fund Corporation and various institutions that previously were or currently are part of the Farm Credit System (which has been undergoing reorganization since 1987). Some U.S. government securities, such as U.S. Treasury bills, Treasury notes and Treasury bonds, which differ only in their interest rates, maturities and times of issuance, are supported by the full faith and credit of the United States. Others are supported by: (i) the right of the issuer to borrow from the U.S. Treasury, such as securities of the Federal Home Loan Banks; (ii) the discretionary authority of the U.S. government to purchase the agency’s obligations, such as securities of the FNMA; or (iii) only the credit of the issuer. No assurance can be given that the U.S. government will provide financial support in the future to U.S. government agencies, authorities or

instrumentalities that are not supported by the full faith and credit of the United States. Securities guaranteed as to principal and interest by the U.S. government, its agencies, authorities or instrumentalities include: (i) securities for which the payment of principal and interest is backed by an irrevocable letter of credit issued by the U.S. government or any of its agencies, authorities or instrumentalities; and (ii) participations in loans made to non-U.S. governments or other entities that are so guaranteed. The secondary market for certain of these participations is limited and, therefore, may be regarded as illiquid. U.S. government securities include STRIPS and CUBES, which are issued by the U.S. Treasury as component parts of U.S. Treasury bonds and represent scheduled interest and principal payments on the bonds.

 

Other Investment Companies.  The Fund may invest in the securities of other investment companies to the extent that such investments are consistent with the Fund’s investment objective and policies and are permissible under the 1940 Act. Under the 1940 Act, the Fund may not acquire the securities of other domestic or non-U.S. investment companies if, as a result, (1) more than 10% of the Fund’s total assets would be invested in securities of other investment companies, (2) such purchase would result in more than 3% of the total outstanding voting securities of any one investment company being held by the Fund, or (3) more than 5% of the Fund’s total assets would be invested in any one investment company. These limitations do not apply to the purchase of shares of any money market fund or any investment company in connection with a merger, consolidation, reorganization or acquisition of substantially all the assets of another investment company.

 

The Fund, as a holder of the securities of other investment companies, will bear its pro rata portion of the other investment companies’ expenses, including advisory fees. These expenses are in addition to the direct expenses of the Fund’s own operations.

 

Temporary Defensive Investments.  Under unusual market or economic conditions or for temporary defensive purposes, the Fund may invest up to 100% of its total assets in securities issued or guaranteed by the U.S. government or its instrumentalities or agencies, certificates of deposit, bankers’ acceptances and other bank obligations, commercial paper rated in the highest category by a nationally recognized statistical rating organization or other fixed income securities deemed by Calamos to be consistent with a defensive posture, or may hold cash. The yield on such securities may be lower than the yield on lower rated fixed income securities. During such periods, the Fund may not be able to achieve its investment objective.

 

Repurchase Agreements.  The Fund may enter into repurchase agreements with broker-dealers, member banks of the Federal Reserve System and other financial institutions. Repurchase agreements are arrangements under which the Fund purchases securities and the seller agrees to repurchase the securities within a specific time and at a specific price. The repurchase price is generally higher than the Fund’s purchase price, with the difference being income to the Fund. The counterparty’s obligations under the repurchase agreement are collateralized with U.S. Treasury and/or agency obligations with a market value of not less than 100% of the obligations, valued daily. Collateral is held by the Fund’s custodian in a segregated, safekeeping account for the benefit of the Fund. Repurchase agreements afford the Fund an opportunity to earn income on temporarily available cash at low risk. In the event of commencement of bankruptcy or insolvency proceedings with respect to the seller of the security before repurchase of the security under a repurchase agreement, the Fund may encounter delay and incur costs before being able to sell the security. Such a delay may involve loss of interest or a decline in price of the security. If the court characterizes the transaction as a loan and the Fund has not perfected a security interest in the security, the Fund may be required to return the security to the seller’s estate and be treated as an unsecured creditor of the seller. As an unsecured creditor, the Fund would be at risk of losing some or all of the principal and interest involved in the transaction.

 

Lending of Portfolio Securities.  The Fund may lend portfolio securities to registered broker-dealers or other institutional investors deemed by Calamos to be of good standing under agreements which require that the loans be secured continuously by collateral in cash, cash equivalents or U.S. Treasury bills maintained on a current basis at an amount at least equal to the market value of the securities loaned. The Fund continues to receive the equivalent of the interest or dividends paid by the issuer on the securities

loaned as well as the benefit of an increase and the detriment of any decrease in the market value of the securities loaned and would also receive compensation based on investment of the collateral. The Fund would not, however, have the right to vote any securities having voting rights during the existence of the loan, but could call the loan in anticipation of an important vote to be taken among holders of the securities or of the giving or withholding of consent on a material matter affecting the investment.

 

As with other extensions of credit, there are risks of delay in recovery or even loss of rights in the collateral should the borrower of the securities fail financially. At no time would the value of the securities loaned exceed 331/3% of the value of the Fund’s total assets.

 

Portfolio Turnover.  Although the Fund does not purchase securities with a view to rapid turnover, there are no limitations on the length of time that portfolio securities must be held. Portfolio turnover can occur for a number of reasons, including calls for redemption, general conditions in the securities markets, more favorable investment opportunities in other securities, or other factors relating to the desirability of holding or changing a portfolio investment. The portfolio turnover rates may vary greatly from year to year. A high rate of portfolio turnover in the Fund would result in increased transaction expense, which must be borne by the Fund. High portfolio turnover may also result in the realization of capital gains or losses and, to the extent net short-term capital gains are realized, any distributions resulting from such gains will be taxed as ordinary income for federal income tax purposes.

 

LEVERAGE

 

The Fund may issue preferred shares, borrow money or issue debt securities to increase its assets available for investment. As a non-fundamental policy, the aggregate liquidation preference of preferred shares, including Preferred Shares, and the aggregate principal amount of Borrowings may not exceed 38% of the Fund’s total assets. However, the Board of Trustees reserves the right to issue preferred shares or borrow to the extent permitted by the 1940 Act (50% of total assets for preferred shares and 331/3% of total assets for borrowing and debt securities). Before issuing any additional preferred shares to increase its assets available for investment, the Fund must have received confirmation from Fitch and S&P or any substitute rating agency that the proposed issuance will not adversely affect such rating agency’s then-current rating on the Preferred Shares. The Fund generally will not issue preferred shares, borrow or issue debt securities unless Calamos expects that the Fund will achieve a greater return on such leverage than the additional costs the Fund incurs as a result of such leverage. The Fund also may borrow money as a temporary measure for extraordinary or emergency purposes, including the payment of dividends and the settlement of securities transactions that otherwise might require untimely dispositions of the Fund’s holdings. When the Fund leverages its assets, the fees paid to Calamos for investment management services will be higher than if the Fund did not borrow because Calamos’ fees are calculated based on the Fund’s managed assets, which include the proceeds of the issuance of preferred shares or any outstanding Borrowings. Consequently, the Fund and Calamos may have conflicting interests in determining whether to leverage the Fund’s assets.

 

The Fund’s use of leverage is premised upon the expectation that the Fund’s preferred share dividends or borrowing costs will be lower than the return the Fund achieves on its investments with the proceeds of the issuance of preferred shares or Borrowings. Such difference in return may result from the Fund’s higher credit rating or the short-term nature of its borrowings compared to the long-term nature of its investments. Because the total assets of the Fund (including the assets obtained from leverage) may be invested in the higher yielding portfolio investments or portfolio investments with the potential for capital appreciation, the holders of common shares will be the beneficiaries of any such incremental return. Should the differential between the underlying assets and cost of leverage narrow, the incremental return “pick up” will be reduced. Furthermore, if long-term interest rates rise or the Fund otherwise incurs losses on its investments, the Fund’s net asset value attributable to its common shares will reflect the resulting decline in the value of portfolio holdings.

 

To the extent the income or capital appreciation derived from securities purchased with funds received from leverage exceeds the cost of leverage, the Fund’s return to common shareholders will be

greater than if leverage had not been used. Conversely, if the income or capital appreciation from the securities purchased with such funds is not sufficient to cover the cost of leverage or if the Fund incurs capital losses, the return of the Fund to common shareholders will be less than if leverage had not been used. Calamos may determine to maintain the Fund’s leveraged position if it expects that the long-term benefits to the Fund’s common shareholders of maintaining the leveraged position will outweigh the current reduced return. Capital raised through the issuance of preferred shares or Borrowings will be subject to dividend payments or interest costs that may or may not exceed the income and appreciation on the assets purchased. The Fund also may be required to maintain minimum average balances in connection with Borrowings or to pay a commitment or other fee to maintain a line of credit; either of these requirements would increase the cost of borrowing over the stated interest rate.

 

Under the 1940 Act, the Fund is not permitted to issue preferred shares unless immediately after such issuance the net asset value of the Fund’s portfolio is at least 200% of the liquidation value of the outstanding preferred shares (i.e., such liquidation value may not exceed 50% of the value of the Fund’s managed assets). In addition, the Fund is not permitted to declare any cash dividend or other distribution on its common shares unless, at the time of such declaration, the net asset value of the Fund’s portfolio (determined after deducting the amount of such dividend or distribution) is at least 200% of such liquidation value. In the event preferred shares are issued, the Fund intends, to the extent possible, to purchase or redeem preferred shares from time to time to maintain coverage of any preferred shares of at least 200%. Under the 1940 Act, the Fund is not permitted to incur indebtedness unless immediately after such borrowing the Fund has an asset coverage of at least 300% of the aggregate outstanding principal balance of senior securities representing indebtedness (i.e., such indebtedness may not exceed 331/3% of the value of the Fund’s managed assets). Additionally, under the 1940 Act, the Fund may not declare any dividend or other distribution upon any class of its shares, or purchase any such shares, unless the aggregate senior securities representing indebtedness of the Fund has, at the time of the declaration of any such dividend or distribution or at the time of any such purchase, an asset coverage of at least 300% after deducting the amount of such dividend, distribution, or purchase price, as the case may be.

 

The Fund may be subject to certain restrictions on investments imposed by guidelines of one or more rating agencies that may issue ratings for the preferred shares or debt instruments issued by the Fund. These guidelines may impose asset coverage or portfolio composition requirements that are more stringent than those imposed by the 1940 Act. Certain types of borrowings may result in the Fund being subject to covenants in credit agreements, including those relating to asset coverage, borrowing base and portfolio composition requirements and additional covenants. The Fund may also be required to pledge its assets to the lenders in connection with certain types of borrowing. Calamos does not anticipate that these covenants or restrictions will adversely affect its ability to manage the Fund’s portfolio in accordance with the Fund’s investment objective and policies. Due to these covenants or restrictions, the Fund may be forced to liquidate investments at times and at prices that are not favorable to the Fund, or the Fund may be forced to forgo investments that Calamos otherwise views as favorable.

 

If and the extent to which the Fund employs leverage will depend on many factors, the most important of which are investment outlook, market conditions and interest rates.

 

INTEREST RATE TRANSACTIONS

 

In order to seek to reduce the interest rate risk inherent in the Fund’s underlying investments and capital structure, the Fund, if market conditions are deemed favorable, may enter into interest rate swap or cap transactions. Interest rate swaps involve the Fund’s agreement with the swap counterparty to pay a fixed rate payment in exchange for the counterparty agreeing to pay the Fund a payment at a variable rate that is expected to approximate the rate of any variable rate payment obligation on Preferred Shares or any variable rate borrowing. The payment obligations would be based on the notional amount of the swap. The Fund’s payment obligations under swap agreements are general unsecured obligations of the Fund and are ranked senior to distributions under the common shares and Preferred Shares.

The Fund may use an interest rate cap that would require it to pay a premium to the cap counterparty and would entitle it, to the extent that a specified variable rate index exceeds a predetermined fixed rate, to receive from the counterparty payment of the difference based on the notional amount of such cap. The Fund would use interest rate swaps or caps only with the intent to reduce or eliminate the risk that an increase in short-term interest rates could have on common share net earnings as a result of leverage.

 

The Fund will usually enter into swaps or caps on a net basis; that is, the two payment streams will be netted out in a cash settlement on the payment date or dates specified in the instrument, with the Fund receiving or paying, as the case may be, only the net amount of the two payments. The Fund intends to segregate with its custodian cash or liquid securities having a value at least equal to the Fund’s net payment obligations under any swap transaction, marked-to-market daily.

 

The use of interest rate swaps and caps is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio security transactions. Depending on the state of interest rates in general, the Fund’s use of interest rate swaps or caps could enhance or harm the overall performance of the common shares. To the extent that there is a decline in interest rates for maturities equal to the remaining maturity on the Fund’s fixed rate payment obligation under the interest rate swap or equal to the remaining term of the interest rate cap, the value of the swap or cap (which initially has a value of zero) could decline, and could result in a decline in the net asset value of the common shares. If, on the other hand, such rates were to increase, the value of the swap or cap could increase, and thereby increase the net asset value of the common shares. As interest rate swaps or caps approach their maturity, their positive or negative value due to interest rate changes will approach zero.

 

Buying interest rate caps could enhance the performance of the common shares by providing a maximum leverage expense. Buying interest rate caps could also decrease the net earnings of the common shares in the event that the premium paid by the Fund to the counterparty exceeds the additional amount the Fund would have been required to pay had it not entered into the cap agreement. The Fund has no current intention of selling an interest rate cap. The Fund will not enter into interest rate swap or cap transactions in an aggregate notional amount that exceeds the outstanding amount of the Fund’s leverage.

 

Interest rate swaps and caps do not involve the delivery of securities or other underlying assets or principal. Accordingly, the risk of loss with respect to interest rate swaps is limited to the net amount of interest payments that the Fund is contractually obligated to make. If the counterparty defaults, the Fund would not be able to use the anticipated net receipts under the swap or cap to offset the dividend payments on Preferred Shares or interest payments on Borrowings. Depending on whether the Fund would be entitled to receive net payments from the counterparty on the swap or cap, which in turn would depend on the general state of short-term interest rates at that point in time, such a default could negatively impact the performance of the common shares.

 

Although this will not guarantee that the counterparty does not default, the Fund will not enter into an interest rate swap or cap transaction with any counterparty that Calamos believes does not have the financial resources to honor its obligation under the interest rate swap or cap transaction. Further, Calamos will continually monitor the financial stability of a counterparty to an interest rate swap or cap transaction in an effort to proactively protect the Fund’s investments.

 

In addition, at the time the interest rate swap or cap transaction reaches its scheduled termination date, there is a risk that the Fund will not be able to obtain a replacement transaction or that the terms of the replacement will not be as favorable as on the expiring transaction. If this occurs, it could have a negative impact on the performance of the common shares.

 

The Fund may choose or be required to redeem some or all Preferred Shares or prepay any Borrowings. This redemption or prepayment would likely result in the Fund seeking to terminate early all or a portion of any swap or cap transaction. Such early termination of a swap could result in a termination payment by or to the Fund. A termination payment by the Fund would result in a reduction in common share net earnings. An early termination of a cap could result in a termination payment to the Fund.

 

RISK FACTORS

 

Risk is inherent in all investing. Investing in any investment company security involves risk, including the risk that you may receive little or no return on your investment or that you may lose part or all of your investment. Therefore, before investing you should consider carefully the following risks that you assume when you invest in Preferred Shares.

 

Risks of Investing in Preferred Shares

 

Interest Rate Risk.  The Fund issues Preferred Shares, which pay dividends based on short-term interest rates. The Fund purchases convertible securities, high yield securities and other securities that pay dividends that are based on the performance of the issuing companies, and/or that pay interest, based on longer term yields. These dividends and interest payments are typically, although not always, higher than short-term interest rates. Such dividends and interest payments, as well as long-term and short-term interest rates, fluctuate. If short-term interest rates rise, dividend rates on the Preferred Shares may rise so that the amount of dividends paid to shareholders of Preferred Shares exceeds the income from the portfolio securities. Because income from the Fund’s entire investment portfolio (not just the portion of the portfolio purchased with the proceeds of the Preferred Shares offering) is available to pay dividends on the Preferred Shares, dividend rates on the Preferred Shares would need to greatly exceed the Fund’s net portfolio income before the Fund’s ability to pay dividends on the Preferred Shares would be jeopardized. If long-term interest rates rise, this could negatively impact the value of the Fund’s investment portfolio, reducing the amount of assets serving as asset coverage for the Preferred Shares. Market interest rates currently are near historically low levels.

 

Auction Risk.  You may not be able to sell your Preferred Shares at an auction if the auction fails; that is, if there are more Preferred Shares offered for sale than there are buyers for those shares. Also, if you place a bid order to retain Preferred Shares at an auction only at a specified rate, and that specific rate exceeds the rate set at the auction, you will not retain your Preferred Shares. If you submit a hold order for Preferred Shares (orders to retain Preferred Shares without specifying a minimum rate) and the auction sets a below-market rate, you may receive a below-market rate of return on your Preferred Shares.

 

As noted above, if there are more Preferred Shares offered for sale than there are buyers for those Preferred Shares in any auction, the auction will fail and you may not be able to sell some or all of your Preferred Shares at that time. The relative buying and selling interest of market participants in your Preferred Shares and in the auction rate securities market as a whole will vary over time, and such variations may be affected by, among other things, news relating to the Fund, the attractiveness of alternative investments, the perceived risk of owning the security (whether related to credit, liquidity or any other risk), the tax treatment accorded the instruments, the accounting treatment accorded Preferred Shares, including recent clarifications of U.S. generally accepted accounting principles relating to the treatment of auction rate securities, reactions to regulatory actions or press reports, financial reporting cycles and market sentiment generally. Shifts of demand in response to any one or simultaneous particular events cannot be predicted and may be short-lived or exist for longer periods.

 

A Broker-Dealer may submit orders in auctions for its own account. Any Broker-Dealer submitting an order for its own account in any auction will have an advantage over other bidders in that it would have knowledge of other orders placed through it in that auction (but it would not have knowledge of orders submitted by other Broker-Dealers, if any). As a result of the Broker-Dealer bidding, the auction clearing rate may be higher or lower than the rate that would have prevailed if the Broker-Dealer had not bid. A Broker-Dealer may also bid in order to prevent what would otherwise be a failed auction, or an auction clearing at a rate that the Broker-Dealer believes does not reflect the market for such securities at the time of the auction. Broker-Dealers may, but are not obligated to, advise holders of the Preferred Shares that the rate that will apply in an “all hold” auction is often a lower rate than would apply if holders submit bids, and such advice, if given, may facilitate the submission of bids by existing holders that would avoid the occurrence of an “all hold” auction. A Broker-Dealer may, but is not obligated to, encourage additional or revised investor bidding in order to prevent an “all hold” auction.

Finally, the dividend periods for the Preferred Shares may be changed by the Fund, subject to certain conditions with notice to the holders of Preferred Shares, which could also affect the liquidity of your investment. See “Description of Preferred Shares” and “The Auction — Auction Procedures.”

 

Secondary Market Risk.  If you try to sell your Preferred Shares between auctions, you may not be able to sell any or all of your shares, or you may not be able to sell them for $25,000 per share or $25,000 per share plus accumulated dividends. If the Fund has designated a special dividend period (a dividend period other than 7 days), changes in interest rates could affect the price you would receive if you sold your shares in the secondary market. Broker-Dealers that maintain a secondary trading market for Preferred Shares are not required to maintain that market, and the Fund is not required to redeem shares either if an auction or an attempted secondary market sale fails because of a lack of buyers. Preferred Shares are not listed on a stock exchange or quoted on the NASDAQ stock market. You may transfer shares outside of auctions only to or through a Broker-Dealer that has entered into an agreement with the Fund’s auction agent, The Bank of New York, and the Fund or such other persons as the Fund permits. If you sell your Preferred Shares to a broker-dealer between auctions, you may receive less than the price you paid for them, especially if market interest rates have risen since the last auction. Accumulated Preferred Shares dividends, however, should at least partially compensate for the increased market interest rates.

 

Ratings and Asset Coverage Risk.  Although it is expected that Fitch will assign a rating of “AAA” to the Preferred Shares and S&P will assign a rating of “AAA” to the Preferred Shares, such ratings do not eliminate or necessarily mitigate the risks of investing in Preferred Shares. Fitch or S&P could downgrade its rating of the Preferred Shares or withdraw its rating of the Preferred Shares at any time, which may make your shares less liquid at an auction or in the secondary market. If Fitch or S&P downgrades the Preferred Shares, the Fund may alter its portfolio or redeem Preferred Shares in an effort to improve the rating, although there is no assurance that it will be able to do so to the extent necessary to restore the prior rating. If the Fund fails to satisfy the asset coverage ratios discussed under “Description of Preferred Shares — Rating Agency Guidelines,” the Fund will be required to redeem a sufficient number of Preferred Shares in order to return to compliance with the asset coverage ratios. The Fund may be required to redeem Preferred Shares at a time when it is not advantageous for the Fund to make such redemption or to liquidate portfolio securities in order to have available cash for such redemption. The Fund may voluntarily redeem Preferred Shares under certain circumstances in order to meet asset maintenance tests. Although a sale of substantially all the assets of the Fund or the merger of the Fund into another entity would require the approval of the holders of the Preferred Shares voting as a separate class as discussed under “Description of the Preferred Shares — Voting Rights,” a sale of substantially all of the assets of the Fund or the merger of the Fund with or into another entity would not be treated as a liquidation of the Fund nor require that the Fund redeem the Preferred Shares, in whole or in part, provided that the Fund continued to comply with the asset coverage ratios discussed under “Description of Preferred Shares — Rating Agency Guidelines.” See “Description of Preferred Shares — Rating Agency Guidelines” for a description of the asset maintenance tests the Fund must meet.

 

Inflation Risk.  Inflation is the reduction in the purchasing power of money resulting from the increase in the price of goods and services. Inflation risk is the risk that the inflation adjusted (or “real”) value of your Preferred Shares investment or the income from that investment will be worth less in the future. As inflation occurs, the real value of the Preferred Shares and distributions declines. In an inflationary period, however, it is expected that, through the auction process, Preferred Shares dividend rates would increase, tending to offset this risk.

 

Income Risk.  The Fund’s income is based primarily on the income it earns from its investments, which vary widely over the short- and long-term. If the Fund’s income drops, over time the Fund’s ability to make dividend payments with respect to the Preferred Shares may be impaired. See “— General Risks of Investing in the Fund” below for the general risks affecting the Fund.

 

Decline in Net Asset Value Risk.  A material decline in the Fund’s net asset value may impair the Fund’s ability to maintain required levels of asset coverage. For a description of risks affecting the Fund, see “— General Risks of Investing in the Fund” below.

Payment Restrictions.  The Fund is prohibited from declaring, paying or making any dividends or distributions on Preferred Shares unless it satisfies certain conditions. See “Description of Preferred Shares — Restrictions on Dividend, Redemption and Other Payments.” The Fund is also prohibited from declaring, paying or making any dividends or distributions on common shares unless it satisfies certain conditions. These prohibitions on the payment of dividends or distributions might impair the Fund’s ability to maintain its qualification as a regulated investment company for federal income tax purposes. The Fund intends, however, to redeem Preferred Shares if necessary to comply with such requirements. There can be no assurance, however, that such redemptions can be effected in time to permit the Fund to distribute its income as required to maintain its qualification as a regulated investment company under the Code. See “U.S. Federal Income Tax Matters” below and in the Statement of Additional Information.

 

Leverage Risk.  The Fund uses financial leverage for investment purposes. In addition to issuing Preferred Shares, the Fund may make further use of financial leverage through borrowing, including the issuance of commercial paper or notes. As a non-fundamental policy, financial leverage (including the aggregate liquidation preference of Preferred Shares and the aggregate principal Borrowings) may not exceed 38% of the Fund’s total assets. The Fund may also borrow funds (a) in connection with a loan made by a bank or other party that is privately arranged and not intended to be publicly distributed or (b) in addition to financial leverage, in an amount equal to up to 5% of its total assets for temporary purposes only.

 

If the Fund issues any senior securities representing indebtedness (as defined in the 1940 Act), under the requirements of the 1940 Act, the value of the Fund’s total assets, less all liabilities and indebtedness of the Fund not represented by such senior securities, must be at least equal, immediately after the issuance of any such senior securities representing indebtedness, to 300% of the aggregate principal amount of such senior securities. Upon the issuance of Preferred Shares, the value of the Fund’s total assets, less all liabilities and indebtedness of the Fund not represented by senior securities, must be at least equal, immediately after the issuance of the Preferred Shares, to 200% of the aggregate principal amount of any senior securities representing indebtedness and the aggregate liquidation preference of Preferred Shares.

 

If the Fund seeks an investment grade rating from one or more nationally recognized statistical rating organizations for any commercial paper or notes (which the Fund expects to do if it issues any such commercial paper or notes), asset coverage or portfolio composition provisions in addition to and more stringent than those required by the 1940 Act may be imposed in connection with the issuance of such a rating. In addition, restrictions may be imposed on certain investment practices in which the Fund may otherwise engage. Any lender with respect to Borrowings by the Fund may require additional asset coverage and portfolio composition provisions as well as restrictions on the Fund’s investment practices.

 

Any Borrowings of the Fund may constitute a substantial lien and burden on the Preferred Shares by reason of their prior claim against the income of the Fund and against the net assets of the Fund in liquidation. The Fund may not be permitted to declare dividends or other distributions, including with respect to Preferred Shares or purchase or redeem shares, including Preferred Shares unless (i) at the time thereof the Fund meets certain asset coverage requirements and (ii) there is no event of default under any Borrowings that is continuing. See “Description of Preferred Shares — Restrictions on Dividend, Redemption and Other Payments.” In the event of a default under any Borrowing, the lenders may have the right to cause a liquidation of the collateral (i.e., sell portfolio securities) and if any such default is not cured, the lenders may be able to control the liquidation as well.

 

The Fund reserves the right at any time, if it believes that market conditions are appropriate, to increase its level of debt or other senior securities to maintain or increase the Fund’s current level of leverage to the extent permitted by the 1940 Act and existing agreements between the Fund and third parties. However, as a non-fundamental policy, financial leverage (the total liquidation preference of Preferred Shares or other preferred shares and any principal amount of Borrowings) may not exceed 38% of the Fund’s total assets.

 

Because the investment management fee paid to Calamos will be calculated on the basis of managed assets, the fee will be higher when leverage is utilized, giving Calamos an incentive to utilize leverage.

General Risks of Investing in the Fund

 

Limited Operating History.  The Fund is a recently organized closed-end management investment company with a limited operating history.

 

Foreign Securities Risk.  Investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. These risks are more pronounced to the extent that the Fund invests a significant portion of its non-U.S. investments in one region or in the securities of emerging market issuers. These risks may include:

 

 

There may be less publicly available information about non-U.S. markets and issuers than is available with respect to U.S. securities and issuers. Non-U.S. companies generally are not subject to accounting, auditing and financial reporting standards, practices and requirements comparable to those applicable to U.S. companies. The trading markets for most non-U.S. securities are generally less liquid and subject to greater price volatility than the markets for comparable securities in the United States. The markets for securities in certain emerging markets are in the earliest stages of their development. Even the markets for relatively widely traded securities in certain non-U.S. markets, including emerging market countries, may not be able to absorb, without price disruptions, a significant increase in trading volume or trades of a size customarily undertaken by institutional investors in the United States.

 

Additionally, market making and arbitrage activities are generally less extensive in such markets, which may contribute to increased volatility and reduced liquidity.

 

Economies and social and political conditions in individual countries may differ unfavorably from those in the United States. Non-U.S. economies may have less favorable rates of growth of gross domestic product, rates of inflation, currency valuation, capital reinvestment, resource self-sufficiency and balance of payments positions. Many countries have experienced substantial, and in some cases extremely high, rates of inflation for many years. Inflation and rapid fluctuations in inflation rates have had, and may continue to have, very negative effects on the economies and securities markets of certain emerging market countries. Unanticipated political or social developments may also affect the values of the Fund’s investments and the availability to the Fund of additional investments in such countries.

 

Currency Risk.  The value of the securities denominated or quoted in foreign currencies may be adversely affected by fluctuations in the relative currency exchange rates and by exchange control regulations. The Fund’s investment performance may be negatively affected by a devaluation of a currency in which the Fund’s investments are denominated or quoted. Further, the Fund’s investment performance may be significantly affected, either positively or negatively, by currency exchange rates because the

U.S. dollar value of securities denominated or quoted in another currency will increase or decrease in response to changes in the value of such currency in relation to the U.S. dollar.

 

Convertible Securities Risk.  The value of a convertible security is influenced by both the yield of non-convertible securities of comparable issuers and by the value of the underlying common stock. The value of a convertible security viewed without regard to its conversion feature (i.e., strictly on the basis of its yield) is sometimes referred to as its “investment value.” A convertible security’s investment value tends to decline as prevailing interest rate levels increase. Conversely, a convertible security’s investment value increases as prevailing interest rate levels decline.

 

However, a convertible security’s market value will also be influenced by its “conversion price,” which is the market value of the underlying common stock that would be obtained if the convertible security were converted. A convertible security’s conversion price tends to increase as the price of the underlying common stock increases, and decrease as the price of the underlying common stock decreases. As the market price of the underlying common stock declines such that the conversion price is substantially below the investment value of the convertible security, the price of the convertible security tends to be influenced more by the yield of the convertible security. Thus, it may not decline in price to the same extent as the underlying common stock. If the market price of the underlying common stock increases to a point where the conversion value approximates or exceeds the investment value, the price of the convertible security tends to be influenced more by the market price of the underlying common stock. In the event of a liquidation of the issuing company, holders of convertible securities would be paid before the company’s common stockholders. Consequently, an issuer’s convertible securities generally entail less risk than its common stock.

 

Synthetic Convertible Securities Risk.  The value of a synthetic convertible security may respond differently to market fluctuations than a convertible security because a synthetic convertible is composed of two or more separate securities, each with its own market value. In addition, if the value of the underlying common stock or the level of the index involved in the convertible component falls below the exercise price of the warrant or option, the warrant or option may lose all value.

 

Convertible Hedging / Short Sales Risk.  The Fund may incur a loss (without limit) as a result of a short sale if the market value of the borrowed security increases between the date of the short sale and the date the Fund replaces the security. The Fund may be unable to repurchase the borrowed security at a particular time or at an acceptable price. If the market price of the common stock issuable upon exercise of a convertible security increases above the conversion price on the convertible security, the price of the convertible security will increase. The Fund’s increased liability on the short position would, in whole or in part, reduce this gain. If the price of the common stock declines, any decline in the price of the convertible security would offset, in whole or in part, the Fund’s gain on the short position. The use of short sales could increase the Fund’s exposure to the market, magnify losses and increase the volatility of returns.

 

High Yield Securities Risk.  Investment in high yield securities involves substantial risk of loss. Below investment grade non-convertible debt securities or comparable unrated securities are commonly referred to as “junk bonds” and are considered predominantly speculative with respect to the issuer’s ability to pay interest and principal and are susceptible to default or decline in market value due to adverse economic and business developments. The market values for high yield securities tend to be very volatile, and these securities are less liquid than investment grade debt securities. For these reasons, your investment in the Fund is subject to the following specific risks:

 

 

Securities rated below investment grade are speculative with respect to the capacity of the issuer to pay interest and repay principal in accordance with the terms of such securities. A rating of C from Moody’s means that the issue so rated can be regarded as having extremely poor prospects of ever attaining any real investment standing. S&P assigns a rating of C to issues that are currently highly vulnerable to nonpayment, and the C rating may be used to cover a situation where a bankruptcy petition has been filed or similar action taken, but payments on the obligation are being continued (a C rating is also assigned to a preferred stock issue in arrears on dividends or sinking fund payments, but that is currently paying). See the Statement of Additional Information for a description of Moody’s and S&P ratings.

 

Adverse changes in economic conditions are more likely to lead to a weakened capacity of a high yield issuer to make principal payments and interest payments than an investment grade issuer. The principal amount of high yield securities outstanding has proliferated in the past decade as an increasing number of issuers have used high yield securities for corporate financing. An economic downturn could severely affect the ability of highly leveraged issuers to service their debt obligations or to repay their obligations upon maturity. Similarly, downturns in profitability in specific industries could adversely affect the ability of high yield issuers in those industries to meet their obligations. The market values of lower quality debt securities tend to reflect individual developments of the issuer to a greater extent than do higher quality securities, which react primarily to fluctuations in the general level of interest rates. Factors having an adverse impact on the market value of lower quality securities may have an adverse effect on the Fund’s net asset value and the market value of its common shares. In addition, the Fund may incur additional expenses to the extent it is required to seek recovery upon a default in payment of principal or interest on its portfolio holdings. In certain circumstances, the Fund may be required to foreclose on an issuer’s assets and take possession of its property or operations. In such circumstances, the Fund would incur additional costs in disposing of such assets and potential liabilities from operating any business acquired.

 

The secondary market for high yield securities may not be as liquid as the secondary market for more highly rated securities, a factor which may have an adverse effect on the Fund’s ability to dispose of a particular security. There are fewer dealers in the market for high yield securities than for investment grade obligations. The prices quoted by different dealers may vary significantly and the spread between the bid and asked price is generally much larger than for higher quality instruments. Under adverse market or economic conditions, the secondary market for high yield securities could contract further, independent of any specific adverse changes in the condition of a particular issuer, and these instruments may become illiquid. As a result, the Fund could find it more difficult to sell these securities or may be able to sell the securities only at prices lower than if such securities were widely traded. Prices realized upon the sale of such lower rated or unrated securities, under these circumstances, may be less than the prices used in calculating the Fund’s net asset value.

 

Because investors generally perceive that there are greater risks associated with lower quality debt securities of the type in which the Fund may invest a portion of its assets, the yields and prices of such securities may tend to fluctuate more than those for higher rated securities. In the lower quality segments of the debt securities market, changes in perceptions of issuers’ creditworthiness tend to occur more frequently and in a more pronounced manner than do changes in higher quality segments of the debt securities market, resulting in greater yield and price volatility.

 

If the Fund invests in high yield securities that are rated C or below, the Fund will incur significant risk in addition to the risks associated with investments in high yield securities and corporate loans. Distressed securities frequently do not produce income while they are outstanding. The Fund may purchase distressed securities that are in default or the issuers of which are in bankruptcy. The Fund may be required to bear certain extraordinary expenses in order to protect and recover its investment.

 

Risks Associated with Options.  There are several risks associated with transactions in options. For example, there are significant differences between the securities markets, the currency markets and the options markets that could result in an imperfect correlation among these markets, causing a given transaction not to achieve its objectives. A decision as to whether, when and how to use options involves

the exercise of skill and judgment, and even a well-conceived transaction may be unsuccessful to some degree because of market behavior or unexpected events. The ability of the Fund to utilize options successfully will depend on Calamos’ ability to predict pertinent market investments, which cannot be assured.

 

The Fund’s ability to close out its position as a purchaser or seller of an OCC or exchange listed put or call option is dependent, in part, upon the liquidity of the option market. Among the possible reasons for the absence of a liquid option market on an exchange are: (i) insufficient trading interest in certain options; (ii) restrictions on transactions imposed by an exchange; (iii) trading halts, suspensions or other restrictions imposed with respect to particular classes or series of options or underlying securities including reaching daily price limits; (iv) interruption of the normal operations of the OCC or an exchange; (v) inadequacy of the facilities of an exchange or OCC to handle current trading volume; or (vi) a decision by one or more exchanges to discontinue the trading of options (or a particular class or series of options), in which event the relevant market for that option on that exchange would cease to exist, although outstanding options on that exchange would generally continue to be exercisable in accordance with their terms. If the Fund were unable to close out an option that it has purchased on a security, it would have to exercise the option in order to realize any profit or the option would expire and become worthless. If the Fund were unable to close out a covered call option that it had written on a security, it would not be able to sell the underlying security until the option expired. As the writer of a covered call option on a security, the Fund foregoes, during the option’s life, the opportunity to profit from increases in the market value of the security covering the call option above the sum of the premium and the exercise price of the call. As the writer of a covered call option on a foreign currency, the Fund foregoes, during the option’s life, the opportunity to profit from currency appreciation.

 

The hours of trading for listed options may not coincide with the hours during which the underlying financial instruments are traded. To the extent that the option markets close before the markets for the underlying financial instruments, significant price and rate movements can take place in the underlying markets that cannot be reflected in the option markets.

 

Unless the parties provide for it, there is no central clearing or guaranty function in an OTC option. As a result, if the Counterparty (as described above under “Principal Investment Strategies” — “Options in General”) fails to make or take delivery of the security, currency or other instrument underlying an OTC option it has entered into with the Fund or fails to make a cash settlement payment due in accordance with the terms of that option, the Fund will lose any premium it paid for the option as well as any anticipated benefit of the transaction. Accordingly, Calamos must assess the creditworthiness of each such Counterparty or any guarantor or credit enhancement of the Counterparty’s credit to determine the likelihood that the terms of the OTC option will be satisfied. The Fund will engage in OTC option transactions only with U.S. government securities dealers recognized by the Federal Reserve Bank of New York as “primary dealers” or broker-dealers, domestic or foreign banks or other financial institutions which have received (or the guarantors of the obligation of which have received) a short-term credit rating of A-1 from S&P or P-1 from Moody’s or an equivalent rating from any nationally recognized statistical rating organization (“NRSRO”) or, in the case of OTC currency transactions, are determined to be of equivalent credit quality by Calamos.

 

The Fund may purchase and sell call options on securities indices and currencies. All calls sold by the Fund must be “covered.” Even though the Fund will receive the option premium to help protect it against loss, a call sold by the Fund exposes the Fund during the term of the option to possible loss of opportunity to realize appreciation in the market price of the underlying security or instrument and may require the Fund to hold a security or instrument which it might otherwise have sold. The Fund may purchase and sell put options on securities indices and currencies. In selling put options, there is a risk that the Fund may be required to buy the underlying security at a disadvantageous price above the market price.

 

Equity Securities Risk.  Equity investments are subject to greater fluctuations in market value than other asset classes as a result of such factors as the issuer’s business performance, investor perceptions, stock market trends and general economic conditions. Equity securities are subordinated to bonds and

other debt instruments in a company’s capital structure in terms of priority to corporate income and liquidation payments.

 

Swaps and Related Swap Products Risk.  Swap agreements are two-party contracts entered into primarily by institutional counterparties for periods ranging from a few weeks to several years. In a standard swap transaction, two parties agree to exchange the returns (or differentials in rates of return) that would be earned or realized on specified notional investments or instruments. The gross returns to be exchanged or “swapped” between the parties are calculated by reference to a “notional amount,” i.e., the return on or increase in value of a particular dollar amount invested at a particular interest rate, in a particular foreign currency or commodity, or in a “basket” of securities representing a particular index. The purchaser of an interest rate cap or floor, upon payment of a fee, has the right to receive payments (and the seller of the cap or floor is obligated to make payments) to the extent a specified interest rate exceeds (in the case of a cap) or is less than (in the case of a floor) a specified level over a specified period of time or at specified dates. The purchaser of an interest rate collar, upon payment of a fee, has the right to receive payments (and the seller of the collar is obligated to make payments) to the extent that a specified interest rate falls outside an agreed upon range over a specified period of time or at specified dates. The purchaser of an option on an interest rate swap, upon payment of a fee (either at the time of purchase or in the form of higher payments or lower receipts within an interest rate swap transaction) has the right, but not the obligation, to initiate a new swap transaction of a pre-specified notional amount with pre-specified terms with the seller of the option as the counterparty. The “notional amount” of a swap transaction is the agreed upon basis for calculating the payments that the parties have agreed to exchange. For example, one swap counterparty may agree to pay a floating rate of interest (e.g., 3 month LIBOR) calculated based on a $10 million notional amount on a quarterly basis in exchange for receipt of payments calculated based on the same notional amount and a fixed rate of interest on a semi-annual basis. In the event the Fund is obligated to make payments more frequently than it receives payments from the other party, it will incur incremental credit exposure to that swap counterparty. This risk may be mitigated somewhat by the use of swap agreements which call for a net payment to be made by the party with the larger payment obligation when the obligations of the parties fall due on the same date. Under most swap agreements entered into by the Fund, payments by the parties will be exchanged on a “net basis,” and the Fund will receive or pay, as the case may be, only the net amount of the two payments.

 

The amount of the Fund’s potential gain or loss on any swap transaction is not subject to any fixed limit. Nor is there any fixed limit on the Fund’s potential loss if it sells a cap or collar. If the Fund buys a cap, floor or collar, however, the Fund’s potential loss is limited to the amount of the fee that it has paid. When measured against the initial amount of cash required to initiate the transaction, which is typically zero in the case of most conventional swap transactions, swaps, caps, floors and collars tend to be more volatile than many other types of instruments.

 

The use of swap transactions, caps, floors and collars involves investment techniques and risks that are different from those associated with portfolio security transactions. If Calamos is incorrect in its forecasts of market values, interest rates, and other applicable factors, the investment performance of the Fund will be less favorable than if these techniques had not been used. These instruments are typically not traded on exchanges. Accordingly, there is a risk that the other party to certain of these instruments will not perform its obligations to the Fund or that the Fund may be unable to enter into offsetting positions to terminate its exposure or liquidate its position under certain of these instruments when it wishes to do so. Such occurrences could result in losses to the Fund.

 

Calamos will consider such risks and will enter into swap and other derivatives transactions only when it believes that the risks are not unreasonable. The Fund will earmark and reserve the Fund assets, in cash or liquid securities, in an amount sufficient at all times to cover its current obligations under its swap transactions, caps, floors and collars. If the Fund enters into a swap agreement on a net basis, it will earmark and reserve assets with a daily value at least equal to the excess, if any, of the Fund’s accrued obligations under the swap agreement over the accrued amount the Fund is entitled to receive under the agreement. If the Fund enters into a swap agreement on other than a net basis, or sells a cap, floor or collar, it will earmark and reserve assets with a daily value at least equal to the full amount of the Fund’s

accrued obligations under the agreement. The Fund will not enter into any swap transaction, cap, floor, or collar, unless the counterparty to the transaction is deemed creditworthy by Calamos. If a counterparty defaults, the Fund may have contractual remedies pursuant to the agreements related to the transaction. The swap markets in which many types of swap transactions are traded have grown substantially in recent years, with a large number of banks and investment banking firms acting both as principals and as agents utilizing standardized swap documentation. As a result, the markets for certain types of swaps (e.g., interest rate swaps) have become relatively liquid. The markets for some types of caps, floors and collars are less liquid. The liquidity of swap transactions, caps, floors and collars will be as set forth in guidelines established by Calamos and approved by the Trustees which are based on various factors, including: (1) the availability of dealer quotations and the estimated transaction volume for the instrument, (2) the number of dealers and end users for the instrument in the marketplace, (3) the level of market making by dealers in the type of instrument, (4) the nature of the instrument (including any right of a party to terminate it on demand) and (5) the nature of the marketplace for trades (including the ability to assign or offset the Fund’s rights and obligations relating to the instrument). Such determination will govern whether the instrument will be deemed within the applicable liquidity restriction on investments in securities that are not readily marketable.

 

During the term of a swap, cap, floor or collar, changes in the value of the instrument are recognized as unrealized gains or losses by marking to market to reflect the market value of the instrument. When the instrument is terminated, the Fund will record a realized gain or loss equal to the difference, if any, between the proceeds from (or cost of) the closing transaction and the Fund’s basis in the contract. The federal income tax treatment with respect to swap transactions, caps, floors, and collars may impose limitations on the extent to which the Fund may engage in such transactions.

 

Credit Default Swaps Risk.  Credit default swaps may require initial premium (discount) payments as well as periodic payments (receipts) related to the interest leg of the swap or to the default of a reference obligation.

 

If the Fund is a seller of a CDS contract, the Fund would be required to pay the par (or other agreed upon) value of a referenced debt obligation to the counterparty in the event of a default or other credit event by the reference issuer, such as a U.S. or foreign corporate issuer, with respect to such debt obligations. In return, the Fund would receive from the counterparty a periodic stream of payments over the term of the contract provided that no event of default has occurred. If no default occurs, the Fund would keep the stream of payments and would have no payment obligations. As the seller, the Fund would be subject to investment exposure on the notional amount of the swap.

 

If the Fund is a buyer of a CDS contract, the Fund would have the right to deliver a referenced debt obligation and receive the par (or other agreed-upon) value of such debt obligation from the counterparty in the event of a default or other credit event (such as a credit downgrade) by the reference issuer, such as a U.S. or foreign corporation, with respect to its debt obligations. In return, the Fund would pay the counterparty a periodic stream of payments over the term of the contract provided that no event of default has occurred. If no default occurs, the counterparty would keep the stream of payments and would have no further obligations to the Fund.

 

The use of CDSs, like all swap agreements, is subject to certain risks. If a counterparty’s creditworthiness declines, the value of the swap would likely decline. Moreover, there is no guarantee that the Fund could eliminate its exposure under an outstanding swap agreement by entering into an offsetting swap agreement with the same or another party.

 

Interest Rate Risk.  Fixed income securities, including high yield securities, are subject to certain common risks, including:

 

 

 

Default Risk.  Default risk refers to the risk that a company who issues a debt security will be unable to fulfill its obligations to repay principal and interest. The lower a debt security is rated, the greater its default risk.

 

Illiquid Investments Risk.  Illiquid securities may be difficult to dispose of at a fair price at the times when the Fund believes it is desirable to do so. Investment of the Fund’s assets in illiquid securities may restrict the Fund’s ability to take advantage of market opportunities. The market price of illiquid securities generally is more volatile than that of more liquid securities, which may adversely affect the price that the Fund pays for or recovers upon the sale of illiquid securities. Illiquid securities are also more difficult to value and Calamos’ judgment may play a greater role in the valuation process. The risks associated with illiquid securities may be particularly acute in situations in which the Fund’s operations require cash and could result in the Fund borrowing to meet its short-term needs or incurring losses on the sale of illiquid securities.

 

Interest Rate Transactions Risk.  The Fund may enter into an interest rate swap or cap transaction to attempt to protect itself from increasing dividend or interest expenses on its preferred shares, debt securities or other borrowings resulting from increasing short-term interest rates and to hedge its portfolio securities. A decline in interest rates may result in a decline in the value of the swap or cap, which may result in a decline in the net asset value of the Fund.

 

Depending on the state of interest rates in general, the Fund’s use of interest rate swap or cap transactions could enhance or harm the overall performance of the common shares. To the extent there is a decline in interest rates, the value of the interest rate swap or cap could decline, and could result in a decline in the net asset value of the common shares. In addition, if the counterparty to an interest rate swap or cap defaults, the Fund would not be able to use the anticipated net receipts under the swap or cap to offset the dividend or interest payments on the Fund’s leverage.

 

Depending on whether the Fund would be entitled to receive net payments from the counterparty on the swap or cap, which in turn would depend on the general state of short-term interest rates at that point in time, such a default could negatively impact the performance of the portfolio shares. In addition, at the time an interest rate swap or cap transaction reaches its scheduled termination date, there is a risk that the Fund would not be able to obtain a replacement transaction or that the terms of the replacement would not be as favorable as on the expiring transaction. If either of these events occurs, it could have a negative impact on the performance of the portfolio shares.

 

Tax Risk.  The Fund may invest in certain securities, such as certain convertible securities, for which the federal income tax treatment may not be clear or may be subject to recharacterization by the Internal Revenue Service. The Fund might not be able to comply with the federal income tax requirements applicable to regulated investment companies if the tax characterization of the Fund’s investments or the tax treatment of the income from such investments were successfully challenged by the Internal Revenue Service. See “U.S. Federal Income Tax Matters.”

 

Management Risk.  Calamos’ judgment about the attractiveness, relative value or potential appreciation of a particular sector, security or investment strategy may prove to be incorrect.

 

Antitakeover Provisions.  The Fund’s Agreement and Declaration of Trust and By-laws include provisions that could limit the ability of other entities or persons to acquire control of the Fund or to

change the composition of its Board of Trustees. Such provisions could limit the ability of shareholders to sell their shares at a premium over prevailing market prices by discouraging a third party from seeking to obtain control of the Fund. These provisions include staggered terms of office for the Trustees, advance notice requirements for shareholder proposals, and super-majority voting requirements for certain transactions with affiliates, converting the Fund to an open-end investment company or a merger, asset sale or similar transaction. Holders of Preferred Shares will have voting rights in addition to and separate from the voting rights of common shareholders with respect to certain of these matters. See “Description of Shares — Preferred Shares” and “Certain Provisions of the Agreement and Declaration of Trust and By-laws.” The holders of Preferred Shares, on the one hand, and the holders of the common shares, on the other, may have interests that conflict in these situations.

 

Market Disruption Risk.  Certain events have a disruptive effect on the securities markets, such as terrorist attacks, war and other geopolitical events, earthquakes, storms and other disasters. The Fund cannot predict the effects of similar events in the future on the U.S. economy or any foreign economy.

 

MANAGEMENT OF THE FUND

 

Trustees and Officers

 

The Fund’s Board of Trustees provides broad supervision over the affairs of the Fund. The officers of the Fund are responsible for the Fund’s operations. Currently, there are seven Trustees of the Fund, one of whom is an “interested person” of the Fund (as defined in the 1940 Act) and six of whom are not “interested persons.” The names and business addresses of the trustees and officers of the Fund and their principal occupations and other affiliations during the past five years are set forth under “Management of the Fund” in the Statement of Additional Information.

 

Investment Adviser

 

The Fund’s investments are managed by Calamos, 2020 Calamos Court, Naperville, IL. As of July 31, 2007 Calamos managed approximately $43.4 billion in assets of individuals and institutions. Calamos is a wholly owned subsidiary of Holdings and an indirect subsidiary of Calamos Asset Management, Inc., a publicly traded holding company.

 

Investment Management Agreement

 

Subject to the overall authority of the Board of Trustees, Calamos regularly provides the Fund with investment research, advice and supervision and furnishes continuously an investment program for the Fund. In addition, Calamos furnishes for use of the Fund such office space and facilities as the Fund may require for its reasonable needs, supervises the Fund’s business and affairs and provides the following other services on behalf of the Fund and not provided by persons not a party to the investment management agreement: (a) preparing or assisting in the preparation of reports to and meeting materials for the Trustees; (b) supervising, negotiating contractual arrangements with, to the extent appropriate, and monitoring the performance of, accounting agents, custodians, depositories, transfer agents and pricing agents, accountants, attorneys, printers, underwriters, brokers and dealers, insurers and other persons in any capacity deemed to be necessary or desirable to Fund operations; (c) assisting in the preparation and making of filings with the Commission and other regulatory and self-regulatory organizations, including, but not limited to, preliminary and definitive proxy materials, registration statements on Form N-2 and amendments thereto, and semi-annual reports on Form N-SAR and Form N-CSR; (d) overseeing the tabulation of proxies by the Fund’s transfer agent; (e) assisting in the preparation and filing of the Fund’s federal, state and local tax returns; (f) assisting in the preparation and filing of the Fund’s federal excise tax return pursuant to Section 4982 of the Code; (g) providing assistance with investor and public relations matters; (h) monitoring the valuation of portfolio securities and the calculation of net asset value; (i) monitoring the registration of shares of beneficial interest of the Fund under applicable federal and state securities laws; (j) maintaining or causing to be maintained for the Fund all books, records and reports and

any other information required under the 1940 Act, to the extent that such books, records and reports and other information are not maintained by the Fund’s custodian or other agents of the Fund; (k) assisting in establishing the accounting policies of the Fund; (l) assisting in the resolution of accounting issues that may arise with respect to the Fund’s operations and consulting with the Fund’s independent accountants, legal counsel and the Fund’s other agents as necessary in connection therewith; (m) reviewing the Fund’s bills; (n) assisting the Fund in determining the amount of dividends and distributions available to be paid by the Fund to its shareholders, preparing and arranging for the printing of dividend notices to shareholders, and providing the transfer and dividend paying agent, the custodian, and the accounting agent with such information as is required for such parties to effect the payment of dividends and distributions; and (o) otherwise assisting the Fund as it may reasonably request in the conduct of the Fund’s business, subject to the direction and control of the Trustees.

 

Under the investment management agreement, the Fund will pay to Calamos a fee based on the average weekly managed assets that is computed weekly and paid on a monthly basis. The fee paid by the Fund is at the annual rate of 1.00% of average weekly managed assets. “Managed assets” means the total assets of the Fund (including any assets attributable to any leverage that may be outstanding) minus the sum of accrued liabilities (other than debt representing financial leverage). Because the fees paid to Calamos are determined on the basis of the Fund’s managed assets, the amount of management fees paid to Calamos when the Fund uses leverage will be higher than if the Fund did not use leverage. Therefore, Calamos has a financial incentive to use leverage, which creates a conflict of interest between Calamos and the Fund’s common shareholders.

 

Under the terms of its investment management agreement, except for the services and facilities provided by Calamos as set forth therein, the Fund shall assume and pay all expenses for all other Fund operations and activities and shall reimburse Calamos for any such expenses incurred by Calamos. The expenses borne by the Fund shall include, without limitation: (a) organization expenses of the Fund (including out-of-pocket expenses, but not including Calamos’ overhead or employee costs); (b) fees payable to Calamos; (c) legal expenses; (d) auditing and accounting expenses; (e) maintenance of books and records that are required to be maintained by the Fund’s custodian or other agents of the Fund; (f) telephone, telex, facsimile, postage and other communications expenses; (g) taxes and governmental fees; (h) fees, dues and expenses incurred by the Fund in connection with membership in investment company trade organizations and the expense of attendance at professional meetings of such organizations; (i) fees and expenses of accounting agents, custodians, sub-custodians, transfer agents, dividend disbursing agents and registrars; (j) payment for portfolio pricing or valuation services to pricing agents, accountants, bankers and other specialists, if any; (k) expenses of preparing share certificates; (l) expenses in connection with the issuance, offering, distribution, sale, redemption or repurchase of securities issued by the Fund; (m) expenses relating to investor and public relations provided by parties other than Calamos; (n) expenses and fees of registering or qualifying shares of beneficial interest of the Fund for sale; (o) interest charges, bond premiums and other insurance expenses; (p) freight, insurance and other charges in connection with the shipment of the Fund’s portfolio securities; (q) the compensation and all expenses (specifically including travel expenses relating to Fund business) of Trustees, officers and employees of the Fund who are not affiliated persons of Calamos; (r) brokerage commissions or other costs of acquiring or disposing of any portfolio securities of the Fund; (s) expenses of printing and distributing reports, notices and dividends to shareholders; (t) expenses of preparing and setting in type, printing and mailing prospectuses and statements of additional information of the Fund and supplements thereto; (u) costs of stationery; (v) any litigation expenses; (w) indemnification of Trustees and officers of the Fund; (x) costs of shareholders’ and other meetings; (y) interest on borrowed money, if any; and (z) the fees and other expenses of listing the Fund’s shares on the New York Stock Exchange or any other national stock exchange.

 

Portfolio Manager

 

Calamos employs a team approach to portfolio management, with teams led by the Co-Chief Investment Officers (the “Co-CIOs”) and comprised generally of the Co-CIOs, senior strategy analysts, intermediate analysts and junior analysts. The Co-CIOs and senior strategy analysts are supported by and

lead a team of investment professionals whose valuable contributions create a synergy of expertise that can be applied across many different investment strategies.

 

Portfolio holdings are reviewed and trading activity is discussed on a regular basis by team members. Team members generally may make trading decisions guided by each respective fund’s investment objective and strategy.

 

While day-to-day management of each portfolio is a team effort, the Co-CIOs, along with the Director of Fixed Income and certain of the senior strategy analysts, have joint primary and supervisory responsibility for the Fund and work with all team members in developing and executing each respective portfolio’s investment program. The Fund’s portfolio investment program includes implementation of distinct strategies, including a fixed income approach which is lead by the Director of Fixed Income of Calamos. All team leaders are further identified below.

 

John P. Calamos, Sr., Co-CIO of Calamos, generally focuses on the top-down approach of diversification by industry sector and macro-level investment themes. Nick P. Calamos, Co-CIO of Calamos, also focuses on the top-down approach of diversification by industry sector and macro-level investment themes and, in addition, focuses on the bottom-up approach and corresponding research and analysis. Matthew Toms is Director of Fixed Income. John P. Calamos, Jr., John Hillenbrand, Steve Klouda, Jeff Scudieri and Jon Vacko are each senior strategy analysts.

 

John P. Calamos, Sr. is President and Trustee of the Fund and founder, chairman, CEO and Co-CIO of Calamos and its predecessor company. Nick P. Calamos is Vice President of the Fund and Senior Executive Vice President and Co-CIO of Calamos and its predecessor company. Matthew Toms joined Calamos in March 2007 as Director of Fixed Income. John P. Calamos, Jr., Executive Vice President of Calamos, joined the firm in 1985 and has held various senior investment positions since that time. John Hillenbrand joined Calamos in 2002 and has been a senior strategy analyst since August 2002. Steve Klouda joined Calamos in 1994 and has been a senior strategy analyst since July 2002. Jeff Scudieri joined Calamos in 1997 and has been a senior strategy analyst since September 2002. Jon Vacko joined Calamos in 2000 and has been a senior strategy analyst since July 2002.

 

For over 20 years, the Calamos portfolio management team has managed money for their clients in convertible, high yield and global strategies. Furthermore, Calamos has extensive experience investing in foreign markets through its convertible securities and high yield securities strategies. Such experience has included investments in established as well as emerging foreign markets. The Fund’s Statement of Additional Information provides additional information about the team leaders, including other accounts they manage, their ownership in the Calamos Family of Funds and their compensation.

 

Fund Accounting

 

Under the arrangements with State Street to provide fund accounting services, State Street provides certain administrative and accounting services to the Fund and such other funds advised by Calamos that may be part of those arrangements (the Fund and such other funds are collectively referred to as the “Calamos Funds”) as described more fully in the Statement of Additional Information. For the services rendered to the Calamos Funds, State Street receives fees based on the combined managed assets of the Calamos Funds (“Combined Assets”). Each fund of the Calamos Funds pays its pro-rata share of the fees payable to State Street described below based on relative managed assets of each fund. State Street receives a fee at the annual rate of .009% for the first $5.0 billion of Combined Assets, .0075% for the next $5.0 billion of Combined Assets, .005% for the next $5.0 billion of Combined Assets and .0035% for the Combined Assets in excess of $15.0 billion. Because the fees payable to State Street are based on the managed assets of the Calamos Funds, the fees increase as the Calamos Funds increase their leverage.

 

In addition, Calamos provides certain other financial accounting services to the Calamos Funds described more fully in the Statement of Additional Information. For providing those services, Calamos receives a fee at the annual rate of .0175% on the first $1 billion of Combined Assets; .0150% on the next $1 billion of Combined Assets; and .0110% on Combined Assets above $2 billion (“financial accounting

service fee”). Each fund of the Calamos Funds will pay its pro rata share of the financial accounting service fee to Calamos based on the Combined Assets of the fund.

 

DESCRIPTION OF PREFERRED SHARES

 

The following is a brief description of the terms of the Preferred Shares. For the complete terms of the Preferred Shares, please refer to the detailed description of the Preferred Shares in the Statement of Preferences of Auction Rate Cumulative Preferred Shares (the “Statement”) attached as Appendix A to the Statement of Additional Information. Where appropriate, terms used in “Description of Preferred Shares” and in “The Auction” below will have the same meanings as those terms in the Statement.

 

General

 

The Fund’s Agreement and Declaration of Trust authorizes the issuance of preferred shares, no par value per share, in one or more classes or series with rights as determined by the Board of Trustees without the approval of common shareholders. The Statement currently authorizes the issuance of 2,800 shares of each of Series M, Series T, Series W, Series TH and Series F Preferred Shares. The Preferred Shares will have a liquidation preference of $25,000 per share, plus an amount equal to accumulated but unpaid dividends (whether or not earned or declared).

 

Each series of preferred shares will rank on parity with any other series of preferred shares of the Fund as to the payment of dividends and the distribution of assets upon liquidation. Each Preferred Share carries one vote on matters on which Preferred Shares can be voted. The Preferred Shares, when issued by the Fund and paid for pursuant to the terms of this prospectus, will be fully paid and non-assessable and will have no preemptive, exchange or conversion rights. Any Preferred Shares repurchased or redeemed by the Fund will be classified as authorized and unissued Preferred Shares. The Board of Trustees may by resolution classify or reclassify any authorized and unissued Preferred Shares from time to time by setting or changing the preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications or terms or conditions of redemption of such shares. The Preferred Shares will not be subject to any sinking fund, but will be subject to mandatory redemption under certain circumstances described below.

 

Dividends and Dividend Periods

 

The following is a general description of dividends and dividend periods for the Preferred Shares.

 

Dividend Periods.  The initial dividend period and rate for each series of the Preferred Shares is as set forth below:

 

Series		Initial Dividend Period				Initial Dividend Rate
M			7 days			6.10%
T			8 days			6.10%
W			9 days			6.10%
TH			10 days			6.10%
F			13 days			6.10%

 

Any subsequent dividend periods of Series M, Series T, Series W, Series TH and Series F Preferred Shares will generally be seven days. The Fund, subject to certain conditions, may change the length of subsequent dividend periods by designating them as special dividend periods. See “— Designation of Special Dividend Periods” below.

 

Dividend Payment Dates.  Dividends on the Preferred Shares will be payable, when, as and if declared by the Board of Trustees, out of funds legally available therefor in accordance with the Agreement and Declaration of Trust, the Statement and applicable law, which generally provides that the Fund may

pay dividends out of its surplus. The initial dividend payment date and the day of the week upon which subsequent dividends, if any, will be paid for each series are as follows:

 

Series		Initial Dividend Payment Date*		Subsequent Dividend Payment Day
M		September 25		Tuesday
T		September 26		Wednesday
W		September 27		Thursday
TH		September 28		Friday
F		October 1		Monday

 

 

 

Dividend periods generally will begin on the first business day after an auction. If dividends are payable on a day that is not a business day, then dividends will generally be payable on the next day if such day is a business day, or as otherwise specified in the Statement. In addition, the Fund may specify different dividend payment dates for any special dividend period of more than seven days, provided that such dates shall be set forth in the notice of special dividend period relating to such special dividend period.

 

Dividends will be paid through the Depository Trust Company (“DTC”) on each dividend payment date. The dividend payment date will normally be (A) the first business day after the dividend period ends with respect to a dividend period of one year or less; provided, however, if the dividend period is more than 91 days then on the 91st, 181st and 271st days within such period, if applicable, and on the business day following the last day of such dividend period; and (B) with respect to any dividend period of more than one year, on a quarterly basis on each January 1, April 1, July 1 and October 1 within such dividend period and on the business day following the last day of such dividend period. DTC, in accordance with its current procedures, is expected to distribute dividends received from the auction agent in same-day funds on each dividend payment date to agent members (members of DTC that will act on behalf of existing or potential holders of Preferred Shares). These agent members are in turn expected to distribute such dividends to the persons for whom they are acting as agents. However, each of the current Broker-Dealers has indicated to the Fund that dividend payments will be available in same-day funds on each dividend payment date to customers that use a Broker-Dealer or a Broker-Dealer’s designee as agent member.

 

Calculation of Dividend Payment.  The Fund computes the dividends per share payable on each series of Preferred Shares by multiplying the applicable rate in effect by a fraction. For each dividend period of less than one (1) year, the numerator of this fraction will normally be the number of days in the dividend period and the denominator will normally be 360. This rate is then multiplied by $25,000 to arrive at the dividends per share. For each dividend period of one (1) year or more, the dividends per share payable is computed as described above, except that it will be determined on the basis of a year consisting of twelve 30-day months.

 

Dividends on Preferred Shares will accumulate from the date of their original issue, which is September 18, 2007. For each dividend payment period after the initial dividend period, the dividend will be the dividend rate determined at an auction. The dividend rate that results from an auction will not be greater than the maximum rate described below. Prior to each auction, Broker-Dealers will notify holders of the term of the next succeeding dividend period as soon as practicable after the Broker-Dealers have been so advised by the Fund. After each auction, on the auction date, Broker-Dealers will notify holders of the applicable rate for the next succeeding dividend period and as of the auction date of the next succeeding auction.

 

Except during a Default Period as described below, the applicable rate resulting from an auction will not be greater than the maximum rate. The maximum rate will be the applicable percentage of the reference rate. The “Reference Rate” will be the applicable LIBOR Rate (as defined below) (for a dividend period of fewer than 365 days) or the applicable Treasury Index Rate (as defined below) (for a dividend period of 365 days or more). The applicable percentage for any standard dividend period will generally be

determined based on the credit ratings assigned to the Preferred Shares by Fitch and S&P on the auction date for such period (as set forth in the table below). If Fitch and/or S&P shall not make such rating available, the rate shall be determined by reference to equivalent ratings issued by any other rating agency.

 

 

The “LIBOR Rate” is the applicable London Inter-Bank Offered Rate for deposits in U.S. dollars for the period most closely approximating the applicable dividend period for a series of Preferred Shares.

 

The “Treasury Index Rate” is the average yield to maturity for certain U.S. Treasury securities having substantially the same length to maturity as the applicable dividend period for a series of Preferred Shares.

 

The Board of Trustees may amend the maximum rate to increase the percentage amount by which the reference rate described above is multiplied to determine the maximum rate shown without the vote or consent of the holders of Preferred Shares, or any shareholder of the Fund, but only with confirmation from each rating agency then rating the Preferred Shares that such action will not impair such agency’s then-current rating of the Preferred Shares, and after consultation with the Broker-Dealers, provided that immediately following any such increase the Fund could meet the Preferred Shares Basic Maintenance Amount test discussed below under “— Rating Agency Guidelines.”

 

The maximum rate for the Preferred Shares will apply automatically following an auction for such Preferred Shares in which sufficient clearing bids have not been made (other than because all Preferred Shares were subject to submitted hold orders) or following the failure to hold an auction for any reason on the auction date scheduled to occur (except for circumstances in which the dividend rate is the Default Rate, as described below).

 

Prior to each auction, Broker-Dealers will notify holders of the term of the next succeeding dividend period as soon as practicable after the Broker-Dealers have been so advised by the Fund. After each auction, on the auction date, Broker-Dealers will notify holders of the applicable rate for the next succeeding dividend period and of the auction date of the next succeeding auction.

 

On each dividend payment date, the Fund is required to deposit with the paying agent sufficient funds for the payment of declared dividends. The failure to make such deposit will not result in the cancellation of any auction. The Fund does not intend to establish any reserves for the payment of dividends.

 

Default Period.  Subject to the applicable cure provisions, a “Default Period” with respect to a particular series will commence on any date the Fund fails to deposit irrevocably in trust in same-day funds, with the paying agent by 12:00 noon, New York City time, (A) the full amount of any declared dividend on that series payable on the dividend payment date (a “Dividend Default”) or (B) the full amount of any redemption price (the “Redemption Price”) payable on the date fixed for redemption (the “Redemption Date”) (a “Redemption Default” and together with a Dividend Default, hereinafter referred to as “Default”).

 

Subject to the applicable cure provisions, a Default Period with respect to a Dividend Default or a Redemption Default shall end on the business day on which, by 12:00 noon, New York City time, all unpaid dividends and any unpaid Redemption Price shall have been deposited irrevocably in trust in same-day funds with the paying agent. In the case of a Dividend Default, the applicable rate for each dividend period commencing during a Default Period will be equal to the default rate described below, and each subsequent dividend period commencing after the beginning of a Default Period shall be a standard dividend period; provided, however, that the commencement of a Default Period will not by itself cause the commencement of a new dividend period. No auction shall be held during a Default Period applicable to that series.

No Default Period with respect to a Dividend Default or Redemption Default shall be deemed to commence if the amount of any dividend or any Redemption Price due (if such default is not solely due to the willful failure of the Fund) is deposited irrevocably in trust, in same-day funds with the paying agent by 12:00 noon, New York City time within three business days after the applicable dividend payment date or Redemption Date, together with an amount equal to the default rate applied to the amount of such non-payment based on the actual number of days comprising such period divided by 360 for each series. The default rate shall be equal to the Reference Rate multiplied by three (3).

 

Restrictions on Dividend, Redemption and Other Payments.  Under the 1940 Act, the Fund may not (i) declare any dividend with respect to the Preferred Shares if, at the time of such declaration (and after giving effect thereto), asset coverage with respect to the Fund’s Borrowings that are senior securities representing indebtedness (as defined in the 1940 Act) would be less than 200% (or such other percentage as may in the future be specified in or under the 1940 Act as the minimum asset coverage for senior securities representing indebtedness of a closed-end investment company as a condition of declaring dividends on its preferred shares) or (ii) declare any other distribution on the Preferred Shares or purchase or redeem Preferred Shares if at the time of the declaration (and after giving effect thereto), asset coverage with respect to the Fund’s senior securities representing indebtedness would be less than 300% (or such other percentage as may in the future be specified in or under the 1940 Act as the minimum asset coverage for senior securities representing indebtedness of a closed-end investment company as a condition of declaring distributions, purchases or redemptions of its shares of beneficial interest). “Senior securities representing indebtedness” generally means any bond, debenture, note or similar obligation or instrument constituting a security (other than shares of beneficial interest) and evidencing indebtedness and could include the Fund’s obligations under any Borrowings. For purposes of determining asset coverage for senior securities representing indebtedness in connection with the payment of dividends or other distributions on, or purchases or redemptions of stock, the term “senior security” does not include any promissory note or other evidence of indebtedness issued in consideration of any loan, extension or renewal thereof, made by a bank or other person and privately arranged, and not intended to be publicly distributed. The term “senior security” also does not include any such promissory note or other evidence of indebtedness in any case where such a loan is for temporary purposes only and in an amount not exceeding 5% of the value of the total assets of the Fund at the time when the loan is made; a loan is presumed under the 1940 Act to be for temporary purposes if it is repaid within 60 days and is not extended or renewed; otherwise it is presumed not to be for temporary purposes. For purposes of determining whether the 200% and 300% asset coverage requirements described above apply in connection with dividends or distributions on or purchases or redemptions of Preferred Shares, such asset coverages may be calculated on the basis of values calculated as of a time within 48 hours (not including Sundays or holidays) next preceding the time of the applicable determination.

 

In addition, a declaration of a dividend or other distribution on, or purchase or redemption of, Preferred Shares may be prohibited (i) at any time when an event of default under any Borrowings has occurred and is continuing; or (ii) if, after giving effect to such declaration, the Fund would not have eligible portfolio holdings with an aggregated discounted value at least equal to any asset coverage requirements associated with such Borrowings; or (iii) the Fund has not redeemed the full amount of Borrowings, if any, required to be redeemed by any provision for mandatory redemption.

 

While any of the Preferred Shares are outstanding, the Fund generally may not declare, pay or set apart for payment, any dividend or other distribution in respect of its common shares (other than in additional common shares or rights to purchase common shares) or repurchase any of its common shares (except by conversion into or exchange for shares of the Fund ranking junior to the Preferred Shares as to the payment of dividends and the distribution of assets upon liquidation) unless each of the following conditions has been satisfied:

 

 

 

The Fund generally will not declare, pay or set apart for payment any dividend on any shares of the Fund ranking, as to the payment of dividends, on a parity with Preferred Shares unless the Fund has declared and paid or contemporaneously declares and pays full cumulative dividends on the Preferred Shares through its most recent dividend payment date. However, if the Fund has not paid dividends in full on the Preferred Shares through the most recent dividend payment date or upon any shares of the Fund ranking, as to the payment of dividends, on a parity with Preferred Shares through their most recent respective dividend payment dates, the amount of dividends shall be declared pro rata so that the amount of dividends declared per share on Preferred Shares and such other class or series of shares will in all cases bear to each other the same ratio that accumulated dividends per share on the Preferred Shares and such other class or series of shares bear to each other.

 

Designation of Special Dividend Periods.  The Fund may, in certain situations, declare a special dividend period. Prior to declaring a special dividend period, the Fund will give notice (a “notice of special dividend period”) to the auction agent and to each Broker-Dealer. The notice of special dividend period will state that the next succeeding dividend period for the Preferred Shares will be a number of days as specified in such notice of special dividend period. The Fund may not designate a special dividend period unless sufficient clearing bids were made in the most recent auction. In addition, full cumulative dividends, any amounts due with respect to mandatory redemptions and any additional dividends payable prior to such date must be paid in full or deposited with the auction agent. In addition, the Fund does not intend to designate a special dividend period if such designation would adversely affect Fitch’s or S&P’s or any substitute rating agency’s then-current rating on the Preferred Shares. The Fund also must have portfolio securities with a discounted value at least equal to the Preferred Share Maintenance Amount. A notice of special dividend period also will specify whether the Preferred Shares will be subject to optional redemption during such special dividend period and, if so, the redemption premium, if any, required to be paid by the Fund in connection with such optional redemption. The Statement does not limit the duration of a special dividend period.

 

If the Fund proposes to designate any special dividend period, not fewer than seven business days (or two business days in the event the duration of the dividend period prior to such special dividend period is fewer than eight days) nor more than 30 business days prior to the first day of such special dividend period, notice of special dividend period shall be (i) made by press release and (ii) communicated by the Fund by telephonic or other means to the auction agent and each Broker-Dealer and the rating agency and confirmed in writing promptly thereafter. Each such notice of special dividend period shall state (A) that the Fund proposes to exercise its option to designate a succeeding special dividend period, specifying the first and last days thereof and the maximum rate for such special dividend period and (B) that the Fund will by 3:00 P.M., New York City time, on the second business day next preceding the first day of such special dividend period, notify the auction agent, who will promptly notify the Broker-Dealers, of either (x) its determination, subject to certain conditions, to proceed with such special dividend period, subject to the terms of any specific redemption provisions, or (y) its determination not to proceed with such special dividend period, in which latter event the succeeding dividend period shall be a standard dividend period. No later than 3:00 P.M., New York City time, on the second business day next preceding the first day of

any proposed special dividend period, the Fund shall deliver to the auction agent, who will promptly deliver to the Broker-Dealers and existing holders, either:

 

(i) a notice of special dividend period stating (A) that the Fund has determined to designate the next succeeding dividend period as a special dividend period, specifying the first and last days thereof and (B) the terms of any specific redemption provisions; or

 

(ii) a notice of special dividend period stating that the Fund has determined not to exercise its option to designate a special dividend period.

 

If the Fund fails to deliver either such notice of special dividend period to the auction agent by 3:00 P.M., New York City time, on the second business day next preceding the first day of such proposed special dividend period, the Fund shall be deemed to have delivered a notice to the auction agent with respect to such dividend period to the effect set forth in clause (ii) above, thereby resulting in a standard dividend period.

 

In addition, the Board of Trustees may amend the standard dividend period of the Preferred Shares without the vote or consent of the holders of the Preferred Shares.

 

Voting Rights

 

Except as noted below, the Fund’s common shares and Preferred Shares have equal voting rights of one vote per share and vote together as a single class. In elections of trustees, the holders of Preferred Shares, as a separate class, vote to elect two trustees. The Board of Trustees will determine to which class or classes the trustees elected by the holders of Preferred Shares will be assigned. The holders of the Preferred Shares shall only be entitled to elect the trustees so designated when their term shall have expired. Such trustees appointed by the holders of Preferred Shares will be allocated as evenly as possible among the classes of trustees. The holders of the common shares and holders of Preferred Shares vote together as a single class to elect the remaining trustees. In addition, during any period in which the Fund has not paid dividends on the Preferred Shares in an amount equal to two full years’ dividends (“Voting Period”), the holders of Preferred Shares, voting as a single class, are entitled to elect (in addition to the two trustees set forth above) the smallest number of additional trustees as is necessary to ensure that a majority of the trustees has been elected by the holders of Preferred Shares. The holders of Preferred Shares will continue to have these rights until all dividends in arrears have been paid or otherwise provided for.

 

In an instance when the Fund has not paid dividends as set forth in the immediately preceding paragraph, the terms of office of all persons who are trustees of the Fund at the time of the commencement of a Voting Period will continue, notwithstanding the election by the holders of the Preferred Shares of the number of trustees that such holders are entitled to elect. The persons elected by the holders of the Preferred Shares, together with the incumbent trustees, will constitute the duly elected trustees of the Fund. When all dividends in arrears on the Preferred Shares have been paid or provided for, the terms of office of the additional trustees elected by the holders of the Preferred Shares will terminate.

 

So long as any of the Preferred Shares are outstanding, the Fund will not, without the affirmative vote of the holders of a majority of the outstanding Preferred Shares, (i) institute any proceedings to be adjudicated bankrupt or insolvent, or consent to the institution of bankruptcy or insolvency proceedings against it, or file a petition seeking or consenting to reorganization or relief under any applicable federal or state law relating to bankruptcy or insolvency, or consent to the appointment of a receiver, liquidator, assignee, trustee, sequestrator (or other similar official) of the Fund or a substantial part of its property, or make any assignment for the benefit of creditors, or, except as may be required by applicable law, admit in writing its inability to pay its debts generally as they become due or take any corporate action in furtherance of any such action; (ii) create, incur or suffer to exist, or agree to create, incur or suffer to exist, or consent to cause or permit in the future (upon the happening of a contingency or otherwise) the creation, incurrence or existence of any material lien, mortgage, pledge, charge, security interest, security

agreement, conditional sale or trust receipt or other material encumbrance of any kind upon any of the Fund’s assets as a whole, except (A) liens the validity of which are being contested in good faith by appropriate proceedings, (B) liens for taxes that are not then due and payable or that can be paid thereafter without penalty, (C) liens, pledges, charges, security interests, security agreements or other encumbrances arising in connection with any indebtedness senior to the Preferred Shares, or arising in connection with any futures contracts or options thereon, interest rate swap or cap transactions, forward rate transactions, put or call options or other similar transactions, (D) liens, pledges, charges, security interests, security agreements or other encumbrances arising in connection with any indebtedness permitted under clause (iii) below and (E) liens to secure payment for services rendered including, without limitation, services rendered by the Fund’s paying agent and the auction agent; or (iii) create, authorize, issue, incur or suffer to exist any indebtedness for borrowed money or any direct or indirect guarantee of such indebtedness for borrowed money, except the Fund may borrow as may be permitted by the Fund’s investment restrictions; provided, however, that transfers of assets by the Fund subject to an obligation to repurchase will not be deemed to be indebtedness for purposes of this provision to the extent that after any such transaction the Fund has eligible assets with an aggregate discounted value at least equal to the Preferred Shares Basic Maintenance Amount as of the immediately preceding valuation date.

 

In addition, the affirmative vote of the holders of a majority, as defined in the 1940 Act, of the outstanding Preferred Shares is required to approve any plan of reorganization (as such term is used in the 1940 Act) adversely affecting such shares or any action requiring a vote of security holders of the Fund under Section 13(a) of the 1940 Act, including, among other things, changes in the Fund’s fundamental investment restrictions described under “Investment Restrictions” in the Statement of Additional Information and changes in the Fund’s subclassification as a closed-end investment company. The affirmative vote of the holders of a majority, as defined in the 1940 Act, of the outstanding Preferred Shares of any series, voting separately from any other series, shall be required with respect to any matter that materially and adversely affects the rights, preferences, or powers of such series in a manner different from that of other series or classes of the Fund’s shares of beneficial interest. For purposes of the foregoing, no matter will be deemed to adversely affect any rights, preference or power unless such matter (i) alters or abolishes any preferential right of such series; (ii) creates, alters or abolishes any right in respect of redemption of such series; or (iii) creates or alters (other than to abolish) any restriction on transfer applicable to such series. The vote of holders of any series described in this paragraph will in each case be in addition to a separate vote of the requisite percentage of common shares and/or preferred shares necessary to authorize the action in question.

 

The common shares and the Preferred Shares also will vote separately to the extent otherwise required under Delaware law or the 1940 Act as in effect from time to time. The class votes of holders of Preferred Shares described above will in each case be in addition to any separate vote of the requisite percentage of common shares and Preferred Shares, voting together as a single class, necessary to authorize the action in question.

 

For the purpose of any right of the holders of Preferred Shares to vote on any matter, whether the right is created by the Agreement and Declaration of Trust, by statute or otherwise, a holder of a Preferred Share is not entitled to vote and the Preferred Shares will not be deemed to be outstanding for the purpose of voting or determining the number of Preferred Shares required to constitute a quorum, if prior to or concurrently with a determination of the Preferred Shares entitled to vote or of Preferred Shares deemed outstanding for quorum purposes, as the case may be, a notice of redemption was given in respect of those Preferred Shares and sufficient deposit securities for the redemption of those Preferred Shares were deposited.

 

Rating Agency Guidelines

 

The Fund is required under Fitch and S&P guidelines to maintain assets having in the aggregate a discounted value at least equal to the Preferred Shares Basic Maintenance Amount (as defined below). Fitch and S&P have each established separate guidelines for determining discounted value. To the extent any particular portfolio holding does not satisfy the applicable rating agency’s guidelines, all or a portion of

such holding’s value will not be included in the calculation of discounted value (as defined by the rating agency). The Fitch and S&P guidelines also impose certain diversification requirements on the Fund’s overall portfolio. The “Preferred Shares Basic Maintenance Amount” means as of any valuation date the dollar amount equal to:

 

(i) the sum of (A) the product of the number of Preferred Shares outstanding on such date multiplied by $25,000 (plus the product of the number of shares of any other series of preferred shares outstanding on such date multiplied by the liquidation preference of such shares), plus any redemption premium applicable to the Preferred Shares (or other preferred shares) then subject to redemption; (B) the aggregate amount of dividends that will have accumulated at the respective applicable rates (whether or not earned or declared) to (but not including) the first respective dividend payment dates for Preferred Shares outstanding that follow such valuation date (plus the aggregate amount of dividends, whether or not earned or declared, that will have accumulated in respect of other outstanding preferred shares to, but not including, the first respective dividend payment dates for such other shares that follow such valuation date); (C) the aggregate amount of dividends that would accumulate on shares of each series of Preferred Shares outstanding from such first respective dividend payment date therefore through the 42nd day after such valuation date, at the maximum rate (calculated as if such valuation date were the auction date for the dividend period commencing on such dividend payment date) for a standard dividend period of shares of such series to commence on such dividend payment date, assuming, solely for purposes of the foregoing, that if on such valuation date the Fund shall have delivered a notice of special dividend period to the auction agent pursuant to Section 4(b) of Part I of the Statement with respect to shares of such series, such maximum rate shall be the maximum rate for the special dividend period of shares of such series to commence on such dividend payment date (except that (1) if such valuation date occurs at a time when a failure to deposit (or, in the case of preferred shares other than Preferred Shares, a failure similar to a failure to deposit) has occurred that has not been cured, the dividend for purposes of calculation would accumulate at the current dividend rate then applicable to the shares in respect of which such failure has occurred and (2) for those days during the period described in this subparagraph (C) in respect of which the applicable rate in effect immediately prior to such dividend payment date will remain in effect (or, in the case of preferred shares other than Preferred Shares, in respect of which the dividend rate or rates in effect immediately prior to such respective dividend payment dates will remain in effect), the dividend for purposes of calculation would accumulate at such applicable rate (or other rate or rates, as the case may be in respect of those days); (D) the amount of anticipated expenses of the Fund for the 90 days subsequent to such valuation date; (E) the amount of any indebtedness or obligations of the Fund senior in right of payments to the Preferred Shares; and (F) any current liabilities as of such valuation date to the extent not reflected in any of (i) (A) through (i) (E) (including, without limitation, any payables for portfolio securities purchased as of such valuation date and any liabilities incurred for the purpose of clearing securities transactions) less (ii) the value (i.e., the face value of cash, short-term municipal obligations and short-term securities that are the direct obligation of the U.S. government, provided in each case that such securities mature on or prior to the date upon which any of (i) (A) though (i) (F) became payable, otherwise the S&P discounted value) of any of the Fund’s assets irrevocably deposited by the Fund for the payment of any of (i) (A) through (i) (F).

 

The Fund also is required under rating agency guidelines to maintain, with respect to the Preferred Shares, as of the last business day of each month in which Preferred Shares are outstanding, asset coverage of at least 200% with respect to senior securities that are shares of the Fund, including the Preferred Shares (or such other asset coverage as may in the future be specified in or under the 1940 Act as the minimum asset coverage for senior securities that are shares of a closed-end investment company as a condition of declaring dividends on its common stock) (“1940 Act Preferred Shares Asset Coverage”). Fitch and S&P have agreed that the auditors must certify annually the asset coverage test on a date randomly selected by the auditors. Based on the Fund’s assets and liabilities as of August 31, 2007, and assuming

the issuance of all Preferred Shares offered hereby and the use of the proceeds as intended, the 1940 Act Preferred Shares Asset Coverage with respect to Preferred Shares would be computed as follows:

 

 

If the Fund does not timely cure a failure to maintain (1) a discounted value of its portfolio equal to the Preferred Shares Basic Maintenance Amount or (2) the 1940 Act Preferred Shares Asset Coverage, in each case in accordance with the requirements of the rating agency or agencies then rating the Preferred Shares, the Fund will be required to redeem Preferred Shares as described below under “— Redemption.”

 

The Fund may, but is not required to, adopt any modifications to the guidelines that may hereafter be established by Fitch and S&P. Failure to adopt any such modifications, however, may result in a change or a withdrawal of the ratings altogether. In addition, any rating agency providing a rating for the Preferred Shares may, at any time, change or withdraw any such rating. The Board of Trustees may, without shareholder approval, amend, alter, add to or repeal any or all of the definitions and related provisions that have been adopted by the Fund pursuant to the rating agency guidelines in the event the Fund receives written confirmation from Fitch or S&P, or both, as appropriate, that any such change would not impair the ratings then assigned by Fitch and S&P to the Preferred Shares.

 

As described by Fitch and S&P, the Preferred Shares rating is an assessment of the capacity and willingness of the Fund to pay Preferred Shares’ obligations. The ratings on the Preferred Shares are not recommendations to purchase, hold or sell the Preferred Shares, inasmuch as the ratings do not comment as to market price or suitability for a particular investor. The rating agency guidelines also do not address the likelihood that an owner of the Preferred Shares will be able to sell such shares in an auction or otherwise. The ratings are based on current information furnished to Fitch and S&P by the Fund and Calamos and information obtained from other sources. The ratings may be changed, suspended or withdrawn as a result of changes in, or the unavailability of, such information.

 

The rating agency guidelines will apply to the Preferred Shares only so long as such rating agency is rating these shares. The Fund will pay fees to Fitch and S&P for rating the Preferred Shares.

 

The Fund shall deliver to the auction agent and each rating agency a certificate which sets forth a determination regarding the Preferred Shares Basic Maintenance Amount (a “Preferred Shares Basic Maintenance Certificate”) as of (A) within seven business days after the Date of Original Issue, (B) the last valuation date of each month, (C) any date requested by any rating agency, (D) a business day on or before any asset coverage cure date relating to the Fund’s cure of a failure to meet the Preferred Shares Basic Maintenance Amount test, (E) any day that common shares or Preferred Shares are redeemed, and (F) any day the Fitch eligible assets have an aggregate discounted value less than or equal to 110% of the Preferred Shares Basic Maintenance Amount. Such Preferred Shares Basic Maintenance Certificate shall be delivered in the case of (A) above on or before the seventh business day after the date of original issue and in the case of (B)-(F) above on or before the seventh business day after the relevant valuation date or asset coverage cure date.

 

The Fund shall deliver to the auction agent and each rating agency a certificate which sets forth a determination regarding the 1940 Act Preferred Shares Asset Coverage (a “1940 Act Preferred Shares Asset Coverage Certificate”) (i) as of the date of original issue, and (ii) as of (A) the last valuation date of each quarter thereafter, and (B) as of a business day on or before any asset coverage cure date relating to the failure to meet the 1940 Act Preferred Shares Asset Coverage. Such 1940 Act Preferred Shares Asset Coverage Certificate shall be delivered in the case of clause (i) on or before the seventh business day after the date of original issue and in the case of clause (ii) on or before the seventh business day after the relevant valuation date or the asset coverage cure date. The certificates required by the Statement may be combined into a single certificate.

 

Within ten business days of the date of original issue, the Fund shall deliver to the auction agent and each rating agency a letter prepared by the Fund’s independent auditors (an “Auditor’s Certificate”)

regarding the accuracy of the calculations made by the Fund in the Preferred Shares Basic Maintenance Certificate and the 1940 Act Preferred Shares Asset Coverage Certificate required to be delivered by the Fund on or before the seventh business day after the date of original issue. Within ten business days after delivery of the Preferred Shares Basic Maintenance Certificate and the 1940 Act Preferred Shares Asset Coverage Certificate relating to the last valuation date of each fiscal year of the Fund, the Fund will deliver to the auction agent and each rating agency an Auditor’s Certificate regarding the accuracy of the calculations made by the Fund in such certificates. In addition, the Fund will deliver to the persons specified in the preceding sentence an Auditor’s Certificate regarding the accuracy of the calculations made by the Fund on each Preferred Shares Basic Maintenance Certificate and 1940 Act Preferred Shares Asset Coverage Certificate delivered in relation to an asset coverage cure date within ten days after the relevant asset coverage cure date. If an Auditor’s Certificate shows that an error was made in any such report, the calculation or determination made by the Fund’s independent auditors will be conclusive and binding on the Fund.

 

Redemption

 

Mandatory Redemption.  If the Fund does not timely cure a failure to (1) maintain a discounted value of its portfolio equal to the Preferred Shares Basic Maintenance Amount, (2) maintain the 1940 Act Preferred Shares Asset Coverage, or (3) file a required certificate related to asset coverage on time, the Preferred Shares will be subject to mandatory redemption out of funds legally available therefor in accordance with the Statement and applicable law, at the redemption price of $25,000 per share plus an amount equal to accumulated but unpaid dividends thereon (whether or not earned or declared) to (but not including) the date fixed for redemption and in certain cases a redemption premium. Any such redemption will be limited to the number of Preferred Shares necessary to restore the required discounted value or the 1940 Act Preferred Shares Asset Coverage, as the case may be.

 

In determining the number of Preferred Shares required to be redeemed in accordance with the foregoing, the Fund will allocate the number of shares required to be redeemed to satisfy the Preferred Shares Basic Maintenance Amount or the 1940 Act Preferred Shares Asset Coverage, as the case may be, pro rata among the Preferred Shares of the Fund and any other preferred shares of the Fund, subject to redemption or retirement. If fewer than all outstanding shares of any series are, as a result, to be redeemed, the Fund may redeem such shares pro rata, by lot or other method that it deems fair and equitable.

 

Optional Redemption.  After the initial dividend period, to the extent permitted under the 1940 Act and Delaware law, the Fund may, at its option, redeem, in whole or in part, Preferred Shares having a dividend period of one year or less on the business day after the last day of such dividend period upon not less than 15 calendar days and not more than 40 calendar days’ prior notice. The redemption price per share will be $25,000 per share, plus an amount equal to accumulated but unpaid dividends thereon (whether or not earned or declared) to the date fixed for redemption. Preferred Shares having a dividend period of more than one year are redeemable at the option of the Fund, in whole or in part, on any business day prior to the end of the relevant dividend period upon not less than 15 calendar days and not more than 40 calendar days’ prior notice, subject to any specific redemption provisions, which may include the payment of redemption premiums to the extent required under any applicable specific redemption provisions. The Fund will not make any optional redemption unless (i) the Fund has available certain deposit securities with maturities or tender dates not later than the day preceding the applicable redemption date and having a value not less than the amount (including any applicable premium) due to holders of the Preferred Shares by reason of the redemption of the Preferred Shares on such date fixed for the redemption and (ii) the Fund has eligible assets with an aggregate discounted value at least equal to the Preferred Shares Basic Maintenance Amount immediately subsequent to such redemption.

 

Notwithstanding the foregoing, Preferred Shares may not be redeemed at the option of the Fund unless all dividends in arrears on the outstanding Preferred Shares, and any other outstanding preferred shares, have been or are being contemporaneously paid or set aside for payment. This would not prevent the lawful purchase or exchange offer for Preferred Shares made on the same terms to holders of all outstanding preferred shares.

Liquidation

 

Subject to the rights of holders of any series or class or classes of shares ranking on a parity with Preferred Shares with respect to the distribution of assets upon liquidation of the Fund, upon a liquidation, dissolution or winding up of the affairs of the Fund, whether voluntary or involuntary, the holders of Preferred Shares then outstanding will be entitled to receive and to be paid out of the assets of the Fund available for distribution to its shareholders, after claims of creditors but before any payment or distribution is made on the common shares or any other shares of beneficial interest of the Fund ranking junior to the Preferred Shares, an amount equal to the liquidation preference with respect to such shares ($25,000 per share), plus an amount equal to all unpaid dividends thereon (whether or not declared by the Fund, but excluding the interest thereon) accrued to and including the date fixed for such distribution in connection with the liquidation of the Fund. After the payment to the holders of Preferred Shares of the full preferential amounts provided for as described herein, the holders of Preferred Shares as such will have no right or claim to any of the remaining assets of the Fund.

 

If, upon any such liquidation, dissolution or winding up of the affairs of the Fund, whether voluntary or involuntary, the assets of the Fund available for distribution among the holders of all outstanding Preferred Shares, including each series, shall be insufficient to permit the payment in full to such holders of the amounts to which they are entitled, then such available assets shall be distributed among the holders of all outstanding Preferred Shares, including each series, ratably in any such distribution of assets according to the respective amounts which would be payable on all such shares if all amounts thereon were paid in full. Unless and until payment in full has been made to the holders of all outstanding Preferred Shares, including each series, of the liquidation distributions to which they are entitled, no dividends or distributions will be made to holders of common shares or any other class of shares of beneficial interest of the Fund ranking junior to the Preferred Shares as to liquidation.

 

Neither the consolidation nor merger of the Fund with or into any other business entity, nor the sale, lease, exchange or transfer by the Fund of all or substantially all of its property and assets, shall be deemed to be a liquidation, dissolution or winding up of the Fund for purposes of the foregoing paragraph.

 

THE AUCTION

 

General

 

The Statement provides that, except as otherwise described in this prospectus, the applicable rate for the Preferred Shares for each dividend period after the initial dividend period will be the rate that results from an auction conducted as set forth in the Statement and summarized below. In such an auction, persons determine to hold or offer to sell or, based on dividend rates bid by them, offer to purchase or sell Preferred Shares. See the Statement included in the Statement of Additional Information for a more complete description of the auction process.

 

Auction Agency Agreement.  The Fund will enter into an auction agency agreement with the auction agent (currently, The Bank of New York) which provides, among other things, that the auction agent will follow the auction procedures to determine the applicable rate for Preferred Shares, so long as the applicable rate for Preferred Shares is to be based on the results of an auction.

 

Broker-Dealer Agreements.  Each auction requires the participation of one or more Broker-Dealers. The auction agent will enter into agreements with several Broker-Dealers selected by the Fund, which provide for the participation of those Broker-Dealers in auctions for Preferred Shares.

 

The auction agent will pay to each Broker-Dealer after each auction from funds provided by the Fund, a service charge at the annual rate of 1/4 of 1% of the liquidation preference ($25,000 per share) of the Preferred Shares held by that Broker-Dealer’s customer upon settlement in an auction. The Fund may request that the auction agent terminate one or more Broker-Dealer agreements at any time upon five days’ notice, provided that at least one Broker-Dealer agreement is in effect after termination of the agreement.

Auction Procedures

 

Prior to the submission deadline on each auction date for the Preferred Shares, each customer of a Broker-Dealer who is listed on the records of that Broker-Dealer (or, if applicable, the auction agent) as a beneficial owner of Preferred Shares may submit the following types of orders with respect to shares of such series of Preferred Shares to that Broker-Dealer:

 

1. Hold Order — indicating its desire to hold Preferred Shares without regard to the applicable rate for the next dividend period.

 

2. Bid — indicating its desire to sell shares of such series at $25,000 per share if the applicable rate for shares of such series for the next dividend period is less than the rate or spread specified in the bid.

 

3. Sell Order — indicating its desire to sell shares of such series at $25,000 per share without regard to the applicable rate for shares of such series for the next dividend period.

 

A beneficial owner of Preferred Shares may submit different types of orders to its Broker-Dealer with respect to Preferred Shares then held by the beneficial owner. A beneficial owner that submits a bid with respect to Preferred Shares to its Broker-Dealer having a rate higher than the maximum rate on the auction date will be treated as having submitted a sell order to its Broker-Dealer. A beneficial owner that fails to submit an order to its Broker-Dealer will ordinarily be deemed to have submitted a hold order to its Broker-Dealer. However, if a beneficial owner fails to submit an order for some or all of its shares to its Broker-Dealer for an auction relating to a dividend period of more than 91 days, such beneficial owner will be deemed to have submitted a sell order for such shares to its Broker-Dealer. A sell order constitutes an irrevocable offer to sell the Preferred Shares subject to the sell order. A beneficial owner that offers to become the beneficial owner of additional Preferred Shares is, for the purposes of such offer, a potential holder as discussed below.

 

A potential beneficial owner is either a customer of a Broker-Dealer that is not a beneficial owner of Preferred Shares but that wishes to purchase shares of such Preferred Shares or that is a beneficial owner of shares of such Preferred Shares that wishes to purchase additional shares of such Preferred Shares. A potential beneficial owner may submit bids to its Broker-Dealer in which it offers to purchase such Preferred Shares at $25,000 per share if the applicable rate for the next dividend period is not less than the specified rate in such bid. A bid placed by a potential holder specifying a rate higher than the maximum rate for shares of such series on the auction date will not be accepted.

 

The Broker-Dealers in turn will submit the orders of their respective customers who are beneficial owners and potential beneficial owners to the auction agent. They will designate themselves (unless otherwise permitted by the Fund) as existing holders of shares subject to orders submitted or deemed submitted to them by beneficial owners. They will designate themselves as potential holders of shares subject to orders submitted to them by potential beneficial owners. However, neither the Fund nor the auction agent will be responsible for a Broker-Dealer’s failure to comply with these procedures. Any order placed with the auction agent by a Broker-Dealer as or on behalf of an existing holder or a potential holder will be treated the same way as an order placed with a Broker-Dealer by a beneficial owner or potential beneficial owner. Similarly, any failure by a Broker-Dealer to submit to the auction agent an order for any Preferred Shares held by it or customers who are beneficial owners will be treated as a beneficial owner’s failure to submit to its Broker-Dealer an order in respect of Preferred Shares held by it. A Broker-Dealer may also submit orders to the auction agent for its own account as an existing holder or potential holder, provided it is not an affiliate of the Fund.

 

There are sufficient clearing bids in an auction if the number of shares subject to bids submitted or deemed submitted to the auction agent by Broker-Dealers for potential holders with rates or spreads equal to or lower than the maximum rate is at least equal to the number of shares of such series subject to sell orders and the number of shares of such series subject to bids specifying rates or spreads higher than the maximum rate for such series submitted or deemed submitted to the auction agent by Broker-Dealers for existing holders of such series. If there are sufficient clearing bids, the applicable rate for shares of such

series for the next succeeding dividend period thereof will be the lowest rate specified in the submitted bids which, taking into account such rate and all lower rates bid by Broker-Dealers as or on behalf of existing holders and potential holders, would result in existing holders and potential holders owning the shares of such series available for purchase in the auction.

 

If there are not sufficient clearing bids for the Preferred Shares, the applicable rate for the next dividend period will be the maximum rate on the auction date. However, if the Fund has declared a special dividend period and there are not sufficient clearing bids, the election of a special dividend period will not be effective and the applicable rate for the next dividend period will be the same as during the current dividend period. If there are not sufficient clearing bids, beneficial owners of Preferred Shares that have submitted or are deemed to have submitted sell orders may not be able to sell in the auction all shares subject to such sell orders. If all of the outstanding Preferred Shares are the subject of submitted hold orders, then the dividend period following the auction will automatically be the same length as the preceding dividend period and the applicable rate for the next dividend period will be the all hold rate. The all hold rate is 80% of the applicable Reference Rate.

 

The auction procedures include a pro rata allocation of shares for purchase and sale which may result in an existing holder continuing to hold or selling, or a potential holder purchasing, a number of Preferred Shares that is different than the number of shares specified in its order. To the extent the allocation procedures have that result, Broker-Dealers that have designated themselves as existing holders or potential holders in respect of customer orders will be required to make appropriate pro rata allocations among their respective customers.

 

Settlement of purchases and sales will be made on the next business day (which is also a dividend payment date) after the auction date through DTC. Purchasers will make payment through their agent members in same-day funds to DTC against delivery to their respective agent members. DTC will make payment to the sellers’ agent members in accordance with DTC’s normal procedures, which now provide for payment against delivery by their agent members in same-day funds.

 

The auctions for Series M, Series T, Series W, Series TH and Series F Preferred Shares will normally be held every seven days. Each subsequent dividend period will normally begin on the following business day.

 

If an auction date is not a business day because the New York Stock Exchange is closed for business for more than three consecutive business days due to an act of God, natural disaster, act of war, civil or military disturbance, act of terrorism, sabotage, riots or a loss or malfunction of utilities or communications services, or the auction agent is not able to conduct an auction in accordance with the auction procedures for any reason, then the applicable rate for the next dividend period will be the applicable rate determined on the previous auction date.

 

If a dividend payment date is not a business day because the New York Stock Exchange is closed for business for more than three consecutive business days due to an act of God, natural disaster, act of war, civil or military disturbance, act of terrorism, sabotage, riots or a loss or malfunction of utilities or communications services, or the dividend payable on such date cannot be paid for any such reason, then:

 

 

The following is a simplified example of how a typical auction works. Assume that the Fund has 1,000 outstanding Preferred Shares of any series, and three existing holders. The three existing holders and three potential holders submit orders through Broker-Dealers at the auction:

 

 

The lowest dividend rate that will result in all 1,000 Preferred Shares continuing to be held is 4.0% (the offer by D). Therefore, the dividend rate will be 4.0%. Existing holders B and C will continue to own their shares. Existing holder A will sell its shares because A’s dividend rate bid was higher than the dividend rate. Potential holder D will buy 200 shares and potential holder E will buy 300 shares because their bid rates were at or below the dividend rate. Potential holder F will not buy any shares because its bid rate was above the dividend rate.

 

Secondary Market Trading and Transfer of Preferred Shares

 

The underwriters are not required to make a market in the Preferred Shares. The Broker-Dealers (including the underwriters) may maintain a secondary trading market for trades outside of auctions, but they are not required to do so. There can be no assurance that a secondary trading market for Preferred Shares will develop or, if it does develop, that it will provide owners with liquidity of investment. The Preferred Shares will not be registered on any stock exchange or on the NASDAQ market.

 

Investors who purchase the Preferred Shares in an auction for a special dividend period should note that because the dividend rate on such shares will be fixed for the length of that dividend period, the value of such shares may fluctuate in response to the changes in interest rates, and may be more or less than their original cost if sold on the open market in advance of the next auction thereof, depending on market conditions.

 

A beneficial owner or an existing holder may sell, transfer or otherwise dispose of Preferred Shares only in whole shares and only:

 

 

Further description of the auction procedures can be found in the Statement.

 

CERTAIN CONSIDERATIONS AFFECTING AUCTION RATE CUMULATIVE PREFERRED SHARES

 

Role of Broker-Dealer

 

Each Broker-Dealer receives broker-dealer fees from such issuers or obligors at an agreed-upon annual rate that is applied to the principal amount of securities sold or successfully placed through such Broker-Dealer in such auctions.

 

A Broker-Dealer is designated in the Broker-Dealer Agreement as the Broker-Dealer to contact Existing Owners and Potential Owners and solicit bids for the Preferred Shares. The Broker-Dealer will receive Broker-Dealer Fees from the Fund with respect to the Preferred Shares sold or successfully placed through it in auctions for the Preferred Shares. The Broker-Dealer may share a portion of such fees with other dealers that submit Orders through it that are filled in the auction for the Preferred Shares.

 

Bidding by Broker-Dealer

 

A Broker-Dealer is permitted, but not obligated, to submit orders in auctions for the Preferred Shares for its own account either as a buyer or seller and routinely does so in the auction rate securities market in its sole discretion. If the Broker-Dealer submits an order for its own account, it would have an advantage over other bidders because the Broker-Dealer would have knowledge of some or all of the other orders placed through it in that auction for the Preferred Shares and thus, could determine the rate and size of its order so as to increase the likelihood that (i) its order will be accepted in the auction for the Preferred Shares and (ii) the auction for the Preferred Shares is likely to clear at a particular rate. For this reason, and because the Broker-Dealer is appointed and paid by the Fund to serve as a Broker-Dealer in the auctions for the Preferred Shares, the Broker-Dealer’s interests in serving as Broker-Dealer in an auction for the Preferred Shares may differ from those of existing beneficial owners (“Existing Owners”) and potential beneficial owners (“Potential Owners”) who participate in auctions for the Preferred Shares. See “Role of Broker-Dealer.” A Broker-Dealer normally would not have knowledge of orders submitted to the auction agent by any other firm that may in the future be appointed to accept orders pursuant to a Broker-Dealer Agreement.

 

Each Broker-Dealer may place one or more bids in an auction for the Preferred Shares for its own account to acquire the Preferred Shares for its own inventory, to prevent an “auction failure” or to prevent auctions for the Preferred Shares from clearing at a rate that such Broker-Dealer believes does not reflect the market for the Preferred Shares. Each Broker-Dealer may place such bids even after obtaining knowledge of some or all of the other orders submitted through it. When bidding in an auction for the Preferred Shares for its own account, the Broker-Dealer also may bid inside or outside the range of rates that it posts in its Price Talk. See “Price Talk” below.

 

Each Broker-Dealer routinely encourages bidding by others in auctions generally for which it serves as broker-dealer. Each Broker-Dealer may encourage bidding by others in auctions for the Preferred Shares, including to prevent an auction failure or to prevent an auction for the Preferred Shares from clearing at a rate that the Broker-Dealer believes does not reflect the market for the Preferred Shares. A Broker-Dealer may encourage such bids even after obtaining knowledge of some or all of the other orders submitted through it.

 

Bids by any Broker-Dealer or by those it may encourage to place bids are likely to affect (i) the auction rate — including preventing the auction rate from being set at the maximum rate or otherwise causing bidders to receive a lower rate than they might have received had the Broker-Dealer not bid or not encouraged others to bid and (ii) the allocation of the Preferred Shares being auctioned — including displacing some bidders who may have their bids rejected or receive fewer Preferred Shares than they would have received if the Broker-Dealer had not bid or encouraged others to bid. Because of these practices, the fact that an auction for the Preferred Shares clears successfully does not mean that an investment in the Preferred Shares involves no significant liquidity or credit risk. A Broker-Dealer is not obligated to continue to place such bids or to continue to encourage other bidders to do so in any particular auction for the Preferred Shares to prevent an auction failure or an auction for the Preferred Shares from

clearing at a dividend rate such Broker-Dealer believes does not reflect the market for the Preferred Shares. Investors should not assume that a Broker-Dealer will place bids or encourage others to do so or that auction failures will not occur. Investors should also be aware that bids by a Broker-Dealer or by those it may encourage to place bids may cause lower auction rates to occur.

 

The statements herein regarding bidding by a Broker-Dealer apply only to a Broker-Dealer’s auction desk and any other business units of the Broker-Dealer that are not separated from the auction desk by an information barrier designed to limit inappropriate dissemination of bidding information.

 

In any particular auction, if all outstanding Preferred Shares are the subject of submitted hold orders, the Auction Rate for the next succeeding auction period will be the all hold rate (such a situation is called an “All Hold Auction”). If a Broker-Dealer holds any Preferred Shares for its own account on an auction date, it is the Broker-Dealer’s practice to submit a sell order into the auction for the Preferred Shares with respect to such Preferred Shares, which would prevent that auction for the Preferred Shares from being an All Hold Auction. A Broker-Dealer may, but is not obligated to, submit bids for its own account in that same auction for the Preferred Shares, as set forth above.

 

Price Talk

 

Before the start of an auction for the Preferred Shares, a Broker-Dealer, in its discretion, may make available to its customers who are Existing Owners and Potential Owners the Broker-Dealer’s good faith judgment of the range of likely clearing rates for the auction for the Preferred Shares based on market and other information. This is known as “Price Talk.” Price Talk is not a guarantee that the auction rate established through the auction for the Preferred Shares will be within the Price Talk, and Existing Owners and Potential Owners are free to use it or ignore it. A Broker-Dealer occasionally may update and change the Price Talk based on changes in the Fund’s credit quality or macroeconomic factors that are likely to result in a change in interest rate levels, such as an announcement by the Federal Reserve Board of a change in the Federal Funds rate or an announcement by the Bureau of Labor Statistics of unemployment numbers. Potential Owners should confirm with the Broker-Dealer the manner by which the Broker-Dealer will communicate Price Talk and any changes to Price Talk.

 

“All-or-Nothing” Bids

 

A Broker-Dealer will not accept “all-or-nothing” bids (i.e., bids whereby the bidder proposes to reject an allocation smaller than the entire quantity bid) or any other type of bid that allows the bidder to avoid auction procedures that require the pro rata allocation of Preferred Shares where there are not sufficient sell orders to fill all bids at the winning bid rate.

 

No Assurances Regarding Auction Outcomes

 

Each Broker-Dealer provides no assurance as to the outcome of any auction. Each Broker-Dealer also does not provide any assurance that any bid will be successful, in whole or in part, or that the auction for the Preferred Shares will clear at a rate that a bidder considers acceptable. Bids may be only partially filled, or not filled at all, and the auction rate on any Preferred Shares purchased or retained in the auction for the Preferred Shares may be lower than the market rate for similar investments.

 

Each Broker-Dealer will not agree before an auction to buy Preferred Shares from or sell Preferred Shares to a customer after the auction.

 

Deadlines

 

Each particular auction for the Preferred Shares has a formal deadline by which all bids must be submitted by a Broker-Dealer to the auction agent. This deadline is called the “Submission Deadline.” To provide sufficient time to process and submit customer bids to the auction agent before the Submission Deadline, a Broker-Dealer imposes an earlier deadline for all customers — called the “Broker-Dealer Deadline” — by which bidders must submit bids to such Broker-Dealer. The Broker-Dealer Deadline is

subject to change by the Broker-Dealer. Potential Owners should consult with a Broker-Dealer as to its Broker-Dealer Deadline. A Broker-Dealer may allow for correction of clerical errors after the Broker-Dealer Deadline and prior to the Submission Deadline. A Broker-Dealer may submit bids for its own account at any time until the Submission Deadline and may change bids it has submitted for its own account at any time until the Submission Deadline.

 

Existing Owner’s Ability to Resell Auction Rate Securities May Be Limited

 

An Existing Owner may sell, transfer or dispose of the Preferred Shares (i) in an auction for the Preferred Shares, only pursuant to a bid or sell order in accordance with the auction procedures or (ii) outside an auction for the Preferred Shares, only to or through a Broker-Dealer.

 

Existing Owners will be able to sell all of the Preferred Shares that are the subject of their submitted sell orders only if there are bidders willing to purchase all those Preferred Shares in the auction for the Preferred Shares. If sufficient clearing bids have not been made, Existing Owners that have submitted sell orders will not be able to sell in the auction for the Preferred Shares all, and may not be able to sell any, of the Preferred Shares subject to such submitted sell orders. A Broker-Dealer may submit a bid in an auction for the Preferred Shares to avoid an auction failure, but it is not obligated to do so. There may not always be enough bidders to prevent an auction from failure in the absence of a Broker-Dealer bidding in the auction for its own account or encouraging others to bid. Therefore, auction failures are possible, especially if the Fund’s credit were to deteriorate, a market disruption were to occur or if, for any reason, a Broker-Dealer were unable or unwilling to bid.

 

Between auctions for the Preferred Shares, there can be no assurance that a secondary market for the Preferred Shares will develop or, if it does develop, that it will provide Existing Owners the ability to resell the Preferred Shares on the terms or at the times desired by an Existing Owner. Each Broker-Dealer, in its own discretion, may decide to buy or sell the Preferred Shares in the secondary market for its own account from or to investors at any time and at any price, including at prices equivalent to, below, or above par for the Preferred Shares. However, a Broker-Dealer is not obligated to make a market in the Preferred Shares and may discontinue trading in the Preferred Shares without notice for any reason at any time. Existing Owners who resell between auctions for the Preferred Shares may receive an amount less than par, depending on market conditions.

 

If an Existing Owner purchased Preferred Shares through a dealer which is not a Broker-Dealer for the Preferred Shares, such Existing Owner’s ability to sell its Preferred Shares may be affected by the continued ability of its dealer to transact trades for the Preferred Shares through a Broker-Dealer.

 

The ability to resell the Preferred Shares will depend on various factors affecting the market for the Preferred Shares, including news relating to the Fund, the attractiveness of alternative investments, investor demand for short-term securities, the perceived risk of owning the Preferred Shares (whether related to credit, liquidity or any other risk), the tax or accounting treatment accorded the Preferred Shares (including U.S. generally accepted accounting principles as they apply to the accounting treatment of auction rate securities), reactions of market participants to regulatory actions (such as those described in “Securities and Exchange Commission Settlements” below) or press reports, financial reporting cycles and market conditions generally. Demand for the Preferred Shares may change without warning, and declines in demand may be short-lived or continue for longer periods.

 

Resignation of the Auction Agent or the Broker-Dealer Could Impact the Ability to Hold Auctions

 

The Auction Agent Agreement provides that the Auction Agent may resign from its duties as Auction Agent by giving at least 45 days notice to the Fund and does not require, as a condition to the effectiveness of such resignation, that a replacement Auction Agent be in place if its fee has not been paid. The Broker-Dealer Agreement provides that the Broker-Dealer there under may resign upon 5 days notice or immediately, in certain circumstances, and does not require, as a condition to the effectiveness of such resignation, that a replacement Broker-Dealer be in place. For any Auction Period during which there is no duly appointed Auction Agent or Broker-Dealer, it will not be possible to hold Auctions for the Preferred

Shares, with the result that the dividend rate on the Preferred Shares will be determined as described in the Statement.

 

Securities and Exchange Commission Settlements

 

On May 31, 2006, the Commission announced that it had settled its investigation of fifteen firms, including Wachovia Capital Markets, LLC and Citigroup Global Markets Inc. (the “Settling Broker-Dealers”), that participate in the auction rate securities market, regarding their respective practices and procedures in this market. The Commission alleged in the settlement that the firms had managed auctions for auction rate securities in which they participated in ways that were not adequately disclosed or that did not conform to disclosed auction procedures. As part of the settlement, the Settling Broker-Dealers agreed to pay civil penalties. In addition, each Settling Broker-Dealer, without admitting or denying the Commission’s allegations, agreed to provide to customers written descriptions of its material auction practices and procedures and to implement procedures reasonably designed to detect and prevent any failures by that Settling Broker-Dealer to conduct the auction process in accordance with disclosed procedures. No assurance can be offered as to how the settlement may affect the market for auction rate securities or the Preferred Shares.

 

On January 9, 2007, the Commission announced that it had settled its investigation of three banks, including the Bank of New York (the “Settling Auction Agents”), that participate as auction agents in the auction rate securities market, regarding their respective practices and procedures in this market. The Commission alleged in the settlement that the Settling Auction Agents allowed broker-dealers in auctions to submit bids or revise bids after the submission deadlines and allowed broker-dealers to intervene in auctions in ways that affected the rates paid on the auction rate securities. As part of the settlement, the Settling Auction Agents agreed to pay civil penalties. In addition, each Settling Auction Agent, without admitting or denying the Commission’s allegations, agreed to provide to broker-dealers and issuers written descriptions of its material auction practices and procedures and to implement procedures reasonably designed to detect and prevent any failures by that Settling Auction Agent to conduct the auction process in accordance with disclosed procedures.

 

The auction procedures can be amended without the affirmative consent of the beneficial owners of the Preferred Shares, if notice is given to the registered owners of the Preferred Shares and there are sufficient Clearing Bids in a subsequent auction.

 

DESCRIPTION OF BORROWINGS

 

The Agreement and Declaration of Trust authorizes the Fund, without prior approval of holders of common and preferred shares, including Preferred Shares, to borrow money. In this connection, the Fund may issue notes or other evidence of indebtedness (including bank borrowings or commercial paper) and may secure any such borrowings by mortgaging, pledging or otherwise subjecting as security the Fund’s assets. In connection with such Borrowings, the Fund may be required to maintain minimum average balances with the lender or to pay a commitment or other fee to maintain a line of credit. Any such requirements will increase the cost of borrowing over the stated interest rate.

 

Limitations.  Under the requirements of the 1940 Act, the Fund, immediately after issuing any Borrowings that are senior securities representing indebtedness (as defined in the 1940 Act), must have an asset coverage of at least 300%. With respect to any such Borrowings, asset coverage means the ratio which the value of the total assets of the Fund, less all liabilities and indebtedness not represented by senior securities, bears to the aggregate amount of any such Borrowings that are senior securities representing indebtedness, issued by the Fund. Certain types of Borrowings may also result in the Fund being subject to covenants in credit agreements relating to asset coverages or portfolio composition or otherwise. In addition, the Fund may be subject to certain restrictions imposed by guidelines of one or more rating agencies which may issue ratings for commercial paper or notes issued by the Fund. Such restrictions may be more stringent than those imposed by the 1940 Act.

Distribution Preference.  The rights of lenders to the Fund to receive interest on and repayment of principal of any such Borrowings will be senior to the distribution and liquidation rights of the Preferred Shares shareholders, and the terms of any such Borrowings may contain provisions which limit certain activities of the Fund, including the payment of dividends to Preferred Shares shareholders in certain circumstances.

 

Voting Rights.  The 1940 Act does (in certain circumstances) grant to the lenders to the Fund certain voting rights in the event of default in the payment of interest on or repayment of principal. In the event that such provisions would impair the Fund’s status as a regulated investment company under the Code, the Fund, subject to its ability to liquidate its relatively illiquid portfolio, intends to repay the Borrowings. Any Borrowings will likely be ranked senior or equal to all other existing and future preferred shares of the Fund, including the Preferred Shares.

 

The discussion above describes the Board of Trustees’ present intention with respect to a possible offering of Borrowings. If the Board of Trustees determines to authorize any of the foregoing, the terms may be the same as, or different from, the terms described above, subject to applicable law and the Fund’s Declaration of Trust.

 

DESCRIPTION OF COMMON SHARES

 

The Fund is authorized to issue an unlimited number of common shares, without par value. The Board of Trustees is authorized to classify and reclassify any unissued shares into one or more additional classes or series of shares. The Board of Trustees may establish such series or class, from time to time by setting or changing in any one or more respects the designations, preferences, conversion or other rights, voting powers, restrictions, limitations as to dividends, qualifications or terms or conditions of redemption of such shares and pursuant to such classification or reclassification to increase or decrease the number of authorized shares of any existing class or series. The Board of Trustees, without shareholder approval, is authorized to amend the Agreement and Declaration of Trust and By-laws to reflect the terms of any such class or series.

 

Common shares, when issued and outstanding, will be fully paid and non-assessable. Common shareholders are entitled to share pro rata in the net assets of the Fund available for distribution to common shareholders upon liquidation of the Fund. Common shareholders are entitled to one vote for each share held.

 

So long as any Preferred Shares of the Fund are outstanding, holders of common shares will not be entitled to receive any net income of or other distributions from the Fund unless all accumulated dividends on Preferred Shares have been paid, and unless asset coverage (as defined in the 1940 Act) with respect to Preferred Shares would be at least 200% after giving effect to such distributions.

 

The common shares are listed on the New York Stock Exchange under the ticker symbol “CHW.”

 

U.S. FEDERAL INCOME TAX MATTERS

 

The following is a description of certain U.S. federal income tax consequences to a shareholder that acquires, holds and/or disposes of Preferred Shares of the Fund. The discussion reflects applicable tax laws of the United States as of the date of this prospectus, which tax laws may be changed or subject to new interpretations by the courts or the IRS, possibly with retroactive effect. No attempt is made to present a detailed explanation of U.S. federal income tax concerns affecting the Fund and its shareholders, and the discussion set forth herein does not constitute tax advice. In addition, no attempt is made to present state, local or foreign tax concerns or tax concerns applicable to an investor with a special tax status such as a financial institutional or non-U.S. investors. Investors are urged to consult their own tax advisors to determine the tax consequences to them before investing in the Fund.

 

The Fund intends to elect to be treated, and to qualify each year, as a “regulated investment company” under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”), so that it will not pay

U.S. federal income tax on income and capital gains timely distributed to shareholders. If the Fund qualifies as a regulated investment company and distributes to its shareholders at least 90% of the sum of (i) its “investment company taxable income” as that term is defined in the Code (which includes, among other things, dividends, taxable interest, the excess of any net short-term capital gains over net long-term capital losses and certain net foreign exchange gains, less certain deductible expenses) without regard to the deduction for dividends paid and (ii) the excess of its gross tax-exempt interest, if any, over certain disallowed deductions, the Fund will be relieved of U.S. federal income tax on any income of the Fund, including long-term capital gains, distributed to shareholders. However, if the Fund retains any investment company taxable income or net capital gain (i.e., the excess of net long-term capital gain over net short-term capital loss), it will be subject to U.S. federal income tax at regular corporate rates (currently at a maximum effective rate of 35%) on the amount retained. The Fund intends to distribute at least annually all or substantially all of its investment company taxable income, net tax-exempt interest, and net capital gain.

 

Under the Code, the Fund will generally be subject to a nondeductible 4% federal excise tax on a portion of its undistributed ordinary income and capital gains if it fails to meet certain distribution requirements with respect to each calendar year. The Fund intends to make distributions in a timely manner in amounts necessary to avoid the excise tax and accordingly does not expect to be subject to this tax.

 

If for any taxable year the Fund does not qualify as a regulated investment company for U.S. federal income tax purposes, it would be treated in the same manner as a regular corporation subject to U.S. federal income tax and distributions to its shareholders would not be deducted by the Fund in computing its taxable income. In such event, the Fund’s distributions, to the extent derived from the Fund’s current or accumulated earnings and profits, would generally constitute ordinary dividends, which would generally be eligible for the dividends received deduction available to corporate shareholders and for treatment as “qualified dividend income” eligible for reduced rates of federal income taxation in taxable years beginning on or before December 31, 2010 for individual and other non-corporate shareholders.

 

It is anticipated that Preferred Shares will constitute stock of the Fund, and thus distributions with respect to Preferred Shares (other than distributions in redemption of Preferred Shares subject to Section 302(b) of the Code) will generally constitute dividends to the extent of the Fund’s current or accumulated earnings and profits, as calculated for U.S. federal income tax purposes. Except in the case of distributions of net capital gain, such dividends generally will be taxable to holders at ordinary federal income tax rates. However, a portion of such dividends may qualify for the dividends received deduction available to corporations under Section 243 of the Code or the reduced rate of taxation under Section 1(h) (11) of the Code that currently applies to qualified dividend income received by individual and other noncorporate shareholders. Dividends designated by the Fund as capital gain distributions will be treated as long-term capital gains in the hands of holders regardless of the length of time such holders have held their shares. Distributions in excess of current and accumulated earnings and profits of the Fund are treated first as return of capital to the extent of the shareholder’s basis in the Preferred Shares and, thereafter, as capital gain. The IRS currently requires that a regulated investment company that has two or more classes of stock allocate to each such class proportionate amounts of each type of its income (such as ordinary income and capital gains). Accordingly, the Fund intends each year to designate distributions made with respect to Preferred Shares as ordinary income, capital gain distributions, dividends qualifying for the dividends received deduction, if any, and qualified dividend income, if any, in proportion to the Preferred Shares’ share of total dividends paid with respect to such tax year.

 

If the Fund retains any net capital gain, the Fund may designate the retained amount as undistributed capital gains in a notice to shareholders who, if subject to U.S. federal income tax on long-term capital gains, (i) will be required to include in income as long-term capital gain, their proportionate share of such undistributed amount and (ii) will be entitled to credit their proportionate share of the U.S. federal income tax paid by the Fund on the undistributed amount against their U.S. federal income tax liabilities, if any, and to claim refunds to the extent the credit exceeds such liabilities. If such an event occurs, the tax basis of shares owned by a shareholder of the Fund will, for U.S. federal income tax purposes, generally be

increased by the difference between the amount of undistributed net capital gain included in the shareholder’s gross income and the U.S. federal income tax deemed to have been paid by the shareholders.

 

Certain of the Fund’s investment practices are subject to special and complex federal income tax provisions that may, among other things, (i) disallow, suspend or otherwise limit the allowance of certain losses or deductions, (ii) convert tax-advantaged, long-term capital gains and qualified dividend income into higher taxed short-term capital gain or ordinary income, (iii) convert an ordinary loss or a deduction into a capital loss (the deductibility of which is more limited), (iv) cause the Fund to recognize income or gain without a corresponding receipt of cash, (v) adversely affect the timing as to when a purchase or sale of stock or securities is deemed to occur, (vi) adversely alter the characterization of certain complex financial transactions, and (vii) produce income that will not qualify as good income for purposes of the 90% annual gross income requirement described in the Statement of Additional Information. The Fund will monitor its transactions and may make certain tax elections where applicable in order to mitigate the effect of these provisions, if possible.

 

Dividends, interest and some capital gains received by the Fund on foreign securities may be subject to foreign tax withholdings or other foreign taxes. If it meets certain requirements, the Fund may make an election under the Code to pass through such taxes to shareholders of the Fund. If such an election is not made, any foreign taxes paid or accrued by the Fund will represent an expense of the Fund. If this election is made, shareholders will generally be able to claim a credit or deduction (but not both) on their U.S. federal income tax return for, and will be required to treat as part of the amounts distributed to them, their pro rata portion of the taxes paid by the Fund to foreign countries with respect to such income. Shareholders should consult their own tax advisors regarding the potential application of foreign tax credits.

 

Sales and other dispositions of the Preferred Shares are generally taxable events for shareholders that are subject to U.S. federal income tax. Shareholders should consult their own tax advisors with reference to their individual circumstances to determine whether any particular transaction in the Preferred Shares is properly treated as a sale for U.S. federal income tax purposes, as the following discussion assumes, and the tax treatment of any gains or losses recognized in such transactions. Any loss realized by a shareholder upon the sale or other disposition of shares with a tax holding period of six months or less will be treated as a long-term capital loss to the extent of any amounts treated as distributions of long-term capital gain with respect to such shares. Losses on sales or other dispositions of shares may be disallowed under the “wash sale” rules in the event of other investments in the Fund (including those made pursuant to reinvestment of dividends) or in other substantially identical stock or securities within a period of 61 days beginning 30 days before and ending 30 days after a sale or other disposition of shares. In such a case, the disallowed portion of any loss generally would be included in the U.S. federal income tax basis of the shares acquired in the other investments.

 

The Fund is required in certain circumstances to backup withhold at the current rate of 28% on reportable payments including dividends, capital gain distributions and proceeds of sales or other dispositions of the Preferred Shares paid to certain holders of the Preferred Shares who do not furnish the Fund with their correct social security number or other taxpayer identification number and certain other tax certifications, or who are otherwise subject to backup withholding. Backup withholding is not an additional tax. Any amounts withheld from payments made to a shareholder may be refunded or credited against such shareholder’s U.S. federal income tax liability, if any, provided that the required information is furnished to the IRS.

 

Non-U.S. shareholders of the Fund, including shareholders who, with respect to the United States, are nonresident alien individuals, may be subject to U.S. withholding tax on certain dividends and distributors at a rate of 30% or such lower rates as may be prescribed by an applicable treaty.

 

The foregoing is a general and abbreviated summary of the provisions of the Code and the Treasury Regulations in effect as they directly govern the U.S. federal income taxation of the Fund and its shareholders. These provisions are subject to change by legislative or administrative action, and any such change may be retroactive. A more complete discussion of the U.S. federal income tax rules

applicable to the Fund and its shareholders can be found in the Statement of Additional Information, which is incorporated by reference into this prospectus. Shareholders are urged to consult their tax advisors regarding specific questions as to U.S. federal, foreign, state, and local income or other taxes.

 

CERTAIN PROVISIONS OF THE AGREEMENT AND
DECLARATION OF TRUST AND BY-LAWS

 

The Fund’s Agreement and Declaration of Trust includes provisions that could have the effect of limiting the ability of other entities or persons to acquire control of the Fund or to change the composition of its Board of Trustees and could have the effect of depriving shareholders of an opportunity to sell their shares at a premium over prevailing market prices by discouraging a third party from seeking to obtain control of the Fund. These provisions, however, have the advantage of potentially requiring persons seeking control of the Fund to negotiate with its management regarding the price to be paid and facilitating the continuity of the Fund’s investment objective and policies. The Board of Trustees of the Fund has considered these provisions and concluded that they are in the best interests of the Fund.

 

The Board of Trustees is divided into three classes and the terms of the Trustees of the different classes are staggered. A Trustee may be removed from office with or without cause by a vote of at least a majority of the then Trustees if such removal is approved by the holders of at least two-thirds of the shares entitled to vote with respect to the election of such Trustee and present in person or by proxy at a meeting of shareholders called for such purpose.

 

In addition, the Agreement and Declaration of Trust requires the affirmative vote of at least 75% of the outstanding shares entitled to vote on the matter for the Fund to merge or consolidate with any other corporation, association, trust or other organization or to sell, lease or exchange all or substantially all of the Fund’s assets, unless such action has been approved by the affirmative vote of at least 75% of the Trustees then in office, in which case, the affirmative vote of a majority of the outstanding shares entitled to vote on the matter is required.

 

In addition, conversion of the Fund to an open-end investment company would require an amendment to the Fund’s Agreement and Declaration of Trust. Such an amendment would require the favorable vote of a majority of the then Trustees followed by a favorable vote of the holders of at least 75% of the shares entitled to vote on the matter, voting as separate classes or series (or a majority of such shares if the amendment was previously approved by 75% of the Trustees). Such a vote also would satisfy a separate requirement in the 1940 Act that the change be approved by the shareholders. The Fund would be required to redeem all of its outstanding Preferred Shares prior to its conversion to an open-end investment company.

 

In addition, the Agreement and Declaration of Trust requires the affirmative vote or consent of a majority of the then Trustees followed by the affirmative vote or consent of the holders of at least 75% of the shares of each affected class or series of the Fund outstanding, voting separately as a class or series, to approve, adopt or authorize certain transactions with a Principal Shareholder, unless the transaction has been approved by at least 75% of the Trustees, in which case a majority of the outstanding shares entitled to vote shall be required. For purposes of these provisions, a Principal Shareholder refers to any person who, whether directly or indirectly and whether alone or together with its affiliates and associates, beneficially owns 5% or more of the outstanding shares of any class or series of shares of beneficial interest of the Fund. The 5% holder transactions subject to these special approval requirements are:

 

 

The Fund may be terminated by the affirmative vote of not less than 75% of the Trustees then in office by written notice to the shareholders.

 

The Agreement and Declaration of Trust and By-laws provide that the Board of Trustees has the power, to the exclusion of shareholders, to make, alter or repeal any of the By-laws (except for any By-law specified not to be amended or repealed by the Board), subject to the requirements of the 1940 Act. Neither this provision of the Agreement and Declaration of Trust, nor any of the foregoing provisions thereof requiring the affirmative vote of 75% of outstanding shares of the Fund, can be amended or repealed except by the vote of such required number of shares.

 

The Fund’s By-laws generally require that advance notice be given to the Fund in the event a shareholder desires to nominate a person for election to the Board of Trustees or to transact any other business at an annual meeting of shareholders. With respect to an annual meeting following the first annual meeting of shareholders, notice of any such nomination or business must be delivered to or received at the principal executive offices of the Fund not less than 90 calendar days nor more than 120 calendar days prior to the anniversary date of the prior year’s annual meeting (subject to certain exceptions). In the case of the first annual meeting of shareholders, the notice must be given no later than the tenth calendar day following public disclosure as specified in the By-laws of the date of the meeting. Any notice by a shareholder must be accompanied by certain information as provided in the By-laws.

 

With respect to proposals by shareholders submitted outside the process of Rule 14a-8 of the Securities Exchange Act of 1934, the Fund’s By-Laws generally require that advance notice be given to the Fund in the event a shareholder desires to nominate a person for election to the Board of Trustees or to transact any other business that is a proper matter for action by shareholders at an annual meeting of shareholders. With respect to an annual meeting following the first annual meeting of shareholders, notice of any such nomination or business must be delivered to the principal executive offices of the Fund not less than 90 calendar days nor more than 120 calendar days prior to the first anniversary of the date of mailing of the notice for the prior year’s annual meeting (subject to certain exceptions). Any notice by a shareholder must be accompanied by certain information as provided in the By-laws.

 

CUSTODIAN, AUCTION AGENT, TRANSFER AGENT, DIVIDEND PAYING AGENT AND REGISTRAR

 

The Fund’s securities and cash are held under a custodian agreement with The Bank of New York, One Wall Street, New York, New York 10286. The Bank of New York is also the transfer agent, dividend paying agent and registrar for the Fund’s common shares and the Preferred Shares. In addition, The Bank of New York is the auction agent with respect to the Preferred Shares.

 

UNDERWRITING

 

Wachovia Capital Markets, LLC, Citigroup Global Markets Inc., RBC Capital Markets Corporation, H&R Block Financial Advisors, Inc. and Stifel, Nicolaus & Company Incorporated are acting as representatives of the underwriters. Subject to the terms and conditions stated in the Fund’s underwriting agreement dated the date hereof, each underwriter named below has agreed to purchase, and the Fund has agreed to sell to such underwriter, the number of Preferred Shares set forth opposite the name of such underwriter.

 

 

The underwriting agreement provides that the obligations of the underwriters to purchase the Preferred Shares included in this offering are subject to approval of legal matters by counsel and to other conditions. The underwriters are obligated to purchase all the Preferred Shares if it purchases any of the Preferred Shares.

 

The underwriters propose to offer some of the Preferred Shares directly to the public at the public offering price set forth on the cover page of this prospectus and some of the Preferred Shares to dealers at the public offering price less a concession not to exceed $137.50 per Preferred Share. The sales load the Fund will pay of $250 per Preferred Share is equal to 1.00% of the initial offering price. The underwriters may allow, and such dealers may reallow, a concession not to exceed $37.50 per Preferred Share on sales to certain other dealers. After the initial offering of the Preferred Shares to the public, the underwriters may change the public offering price and the other selling terms. Investors must pay for any Preferred Shares purchased on or before September 18, 2007.

 

The following table shows the sales load that the Fund will pay to the underwriters in connection with this offering.

 

 

The Fund estimates that its total expenses for this offering will be $354,745.

 

The Fund and Calamos have agreed that, for a period of 180 days from the date of this prospectus, they will not, without the prior written consent of Wachovia Capital Markets, LLC and Citigroup Global Markets Inc., on behalf of the underwriters, dispose of or hedge any senior securities (as defined in the 1940 Act) of the Fund, or any securities convertible into or exchangeable for senior securities. Wachovia Capital Markets, LLC and Citigroup Global Markets Inc., on behalf of the underwriters, in their sole discretion, may release any of the securities subject to the lock-up agreements at any time without notice.

 

The Fund and Calamos have agreed to indemnify the underwriters against certain liabilities, including liabilities under the Securities Act of 1933, or to contribute to payments the underwriter may be required to make because of any of those liabilities. Any indemnification by the Fund shall be subject to the requirements and limitations of Section 17(i) of the 1940 Act.

 

A prospectus in electronic format may be made available on the website maintained by the underwriter.

The Fund anticipates that from time to time, the underwriters may act as a broker or dealer in connection with the execution of the Fund’s portfolio transactions after they have ceased to be underwriters and, subject to certain restrictions, may act as brokers while they are underwriters.

 

The Fund anticipates that the underwriters or one of their respective affiliates may, from time to time, act in auctions as Broker-Dealers and receive fees as set forth under “The Auction” and in the Statement of Additional Information.

 

Some of the underwriters have performed investment banking and advisory services for Calamos and its affiliates from time to time, for which they have received customary fees and expenses. The underwriters may, from time to time, engage in transactions with or perform services for Calamos and its affiliates in the ordinary course of business.

 

The principal business address of Wachovia Capital Markets, LLC is 375 Park Avenue, New York, New York 10152. The principal business address of Citigroup Global Markets Inc. is 388 Greenwich Street, New York, New York 10013. The principal business address of H&R Block Financial Advisors Inc. is 719 Griswold, Suite 1700, Detroit, Michigan 48226. The principal business address of RBC Capital Markets Corporation is 1211 Avenue of the Americas, Suite 3201, New York, New York 10036. The principal business address of Stifel, Nicolaus & Company, Incorporated is 501 North Broadway, St. Louis, Missouri 63102.

 

LEGAL OPINIONS

 

Bell, Boyd & Lloyd LLC, Chicago, Illinois, serves as counsel to the Fund and to the non-interested Trustees. Vedder, Price, Kaufman & Kammholz, P.C. (“Vedder Price”), Chicago, Illinois is serving as special counsel to the Fund in connection with the offering and also serves as counsel to Calamos. Morris, Nichols, Arsht & Tunnell, Wilmington, Delaware (“Morris Nichols”) will pass on the legality of the shares offered hereby. Certain matters will be passed upon for the underwriter by Simpson Thacher & Bartlett LLP, New York, New York. Vedder Price and Simpson Thacher & Bartlett LLP may rely on the opinion of Morris Nichols for certain matters of Delaware law.

 

AVAILABLE INFORMATION

 

The Fund is subject to the informational requirements of the Securities Exchange Act of 1934 and the 1940 Act and is required to file reports, proxy statements and other information with the Securities and Exchange Commission. These documents can be inspected and copied for a fee at the Commission’s public reference room, 100 F Street, N.E., Washington, D.C. 20549, and at the Commission’s Chicago Regional Office, 175 W. Jackson Boulevard Suite 900, Chicago, Illinois 60604. Reports, proxy statements, and other information about the Fund can be inspected at the offices of the New York Stock Exchange, 20 Broad Street, New York, New York 10005.

 

This prospectus does not contain all of the information in the Fund’s registration statement, including amendments, exhibits, and schedules. Statements in this prospectus about the contents of any contract or other document are not necessarily complete and in each instance reference is made to the copy of the contract or other document filed as an exhibit to the registration statement, each such statement being qualified in all respects by this reference.

 

Additional information about the Fund and Preferred Shares can be found in the Fund’s registration statement (including amendments, exhibits, and schedules) on Form N-2 filed with the Commission. The Commission maintains a web site (http://www.sec.gov) that contains the Fund’s registration statement, other documents incorporated by reference, and other information the Fund has filed electronically with the Commission, including proxy statements and reports filed under the Securities Exchange Act of 1934.

 

TABLE OF CONTENTS FOR STATEMENT

OF ADDITIONAL INFORMATION

 

Calamos Global Dynamic Income Fund

 

Auction Rate Cumulative Preferred Shares

2,800 Shares, Series M

2,800 Shares, Series T

2,800 Shares, Series W

2,800 Shares, Series TH

2,800 Shares, Series F

$350,000,000

 

 

PROSPECTUS

September 14, 2007

 

 

Wachovia Securities

Citi

H&R Block Financial Advisors, Inc.

RBC Capital Markets

Stifel Nicolaus

 

CALAMOS GLOBAL DYNAMIC INCOME FUND

STATEMENT OF ADDITIONAL INFORMATION

     Calamos Global Dynamic Income Fund (the “Fund”) is a recently organized, diversified, closed-end management investment company. This Statement of Additional Information relating to 2,800 shares of each of Series M, Series T, Series W, Series TH and Series F Auction Rate Cumulative Preferred Shares (“Preferred Shares”) does not constitute a prospectus, but should be read in conjunction with the prospectus relating thereto dated September 14, 2007. This Statement of Additional Information does not include all information that a prospective investor should consider before purchasing and investors should obtain and read the Prospectus prior to purchasing such shares. A copy of the prospectus may be obtained without charge by calling 1-800-582-6959. You may also obtain a copy of the prospectus on the Securities and Exchange Commission’s web site (http://www.sec.gov). Capitalized terms used but not defined in this Statement of Additional Information have the same meanings ascribed to them in the prospectus or the Statement of Preferences of Auction Rate Cumulative Preferred Shares (the “Statement”) attached as Appendix A.

TABLE OF CONTENTS FOR STATEMENT OF ADDITIONAL INFORMATION

Use of Proceeds			S-2
Investment Restrictions			S-24
Management of the Fund			S-26
Portfolio Managers			S-34
Portfolio Transactions			S-36
Net Asset Value			S-37
Additional Information Concerning the Auctions For Preferred Shares			S-37
U.S. Federal Income Tax Matters			S-38
Custodian, Transfer Agent, Dividend Paying Agent and Registrar			S-45
Experts			S-45
Additional Information Concerning the Agreement and Declaration of Trust			S-46
Additional Information			S-46
Financial Statement and Independent Auditors’ Report			F-1
Appendix A—Statement of Preference of Preferred Shares			A-1
Appendix B—Description of Ratings			B-1

This Statement of Additional Information is dated September 14, 2007.

USE OF PROCEEDS

     The Fund will invest the net proceeds of the offering in accordance with the Fund’s investment objective and policies as stated below and in the Prospectus. It is presently anticipated that the Fund will invest substantially all of the net proceeds in securities that meet the investment objective and policies within three months after completion of the offering. Pending such investment, the net proceeds may be invested in U.S. government securities and high grade, short-term money market instruments. If necessary, the Fund may also purchase, as temporary investments, securities of other open- or closed-end investment companies that invest primarily in the types of securities in which the Fund may invest directly.

Investment Objective and Policies

     The prospectus presents the investment objective and the principal investment strategies and risks of the Fund. This section supplements the disclosure in the Fund’s prospectus and provides additional information on the Fund’s investment policies or restrictions. Restrictions or policies stated as a maximum percentage of the Fund’s assets are only applied immediately after a portfolio investment to which the policy or restriction is applicable (other than the limitations on borrowing). Accordingly, any later increase or decrease resulting from a change in values, managed assets or other circumstances will not be considered in determining whether the investment complies with the Fund’s restrictions and policies.

     Primary Investments. Under normal circumstances, the Fund will invest primarily in a globally diversified portfolio of convertible instruments, common and preferred stocks, and income-producing securities such as investment grade and below investment grade (high yield/high risk) debt securities. The Fund may use other income-producing strategies, including options, swaps and other derivative instruments, for both investment and hedging purposes. The Fund, under normal circumstances, will invest at least 40% of its managed assets in securities of foreign issuers in developed and emerging markets, including debt and equity securities of corporate issuers and debt securities of government issuers. “Managed assets” means the total assets of the Fund (including any assets attributable to any leverage that may be outstanding) minus the sum of accrued liabilities (other than debt representing financial leverage). For this purpose, the liquidation preference on any preferred shares will not constitute a liability.

     Foreign Securities. The Fund may invest up to 100% of its managed assets in securities of foreign issuers in developed and emerging markets, including debt and equity securities of corporate issuers and debt securities of government issuers. A significant portion of the Fund’s assets will be invested in foreign securities. A foreign issuer is a foreign government or company organized under the laws of a foreign country.

     Investors should understand and consider carefully the risks involved in foreign investing. Investing in foreign securities, which are generally denominated in foreign currencies, and utilization of forward foreign currency exchange contracts involve certain considerations comprising both risks and opportunities not typically associated with investing in U.S. securities. These considerations include: fluctuations in exchange rates of foreign currencies; possible imposition of exchange control regulation or currency restrictions that would prevent cash from being brought back to the United States less public information with respect to issuers of securities; less governmental supervision of stock exchanges, securities brokers, and issuers of securities; lack of uniform accounting, auditing and financial reporting standards; lack of uniform settlement periods and trading practices; less liquidity and frequently greater price volatility in foreign markets than in the United States; possible imposition of foreign taxes; and

sometimes less advantageous legal, operational and financial protections applicable to foreign sub-custodial arrangements.

     Although the Fund intends primarily to invest in companies and government securities of countries having stable political environments, there is the possibility of expropriation or confiscatory taxation, seizure or nationalization of foreign bank deposits or other assets, establishment of exchange controls, the adoption of foreign government restrictions, or other adverse political, social or diplomatic developments that could affect investment in these nations.

     The Fund may invest in the securities of issuers located in emerging market countries. The securities markets of emerging countries are substantially smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other more developed countries. Disclosure and regulatory standards in many respects are less stringent than in the U.S. and other major markets. There also may be a lower level of monitoring and regulation of emerging markets and the activities of investors in such markets, and enforcement of existing regulations has been extremely limited. Economies in individual emerging markets may differ favorably or unfavorably from the U.S. economy in such respects as growth of gross domestic product, rates of inflation, currency depreciation, capital reinvestment, resource self-sufficiency and balance of payments positions. Many emerging market countries have experienced high rates of inflation for many years, which has had and may continue to have very negative effects on the economies and securities markets of those countries.

     Currency Exchange Transactions. Currency exchange transactions may be conducted either on a spot (i.e., cash) basis at the spot rate for purchasing or selling currency prevailing in the foreign exchange market or through forward currency exchange contracts (“forward contracts”). Forward contracts are contractual agreements to purchase or sell a specified currency at a specified future date (or within a specified time period) and price set at the time of the contract. Forward contracts are usually entered into with banks, foreign exchange dealers and broker-dealers, are not exchange traded, and are usually for less than one year, but may be renewed.

     Forward currency exchange transactions may involve currencies of the different countries in which the Fund may invest and serve as hedges against possible variations in the exchange rate between these currencies and the U.S. dollar. Currency exchange transactions are limited to transaction hedging and portfolio hedging involving either specific transactions or portfolio positions, except to the extent described below under “Synthetic Foreign Money Market Positions.” Transaction hedging is the purchase or sale of forward contracts with respect to specific receivables or payables of the Fund accruing in connection with the purchase and sale of its portfolio securities or the receipt of dividends or interest thereon. Portfolio hedging is the use of forward contracts with respect to portfolio security positions denominated or quoted in a particular foreign currency. Portfolio hedging allows the Fund to limit or reduce its exposure in a foreign currency by entering into a forward contract to sell such foreign currency (or another foreign currency that acts as a proxy for that currency) at a future date for a price payable in U.S. dollars so that the value of the foreign denominated portfolio securities can be approximately matched by a foreign denominated liability. The Fund may not engage in portfolio hedging with respect to the currency of a particular country to an extent greater than the aggregate market value (at the time of making such sale) of the securities held in its portfolio denominated or quoted in that particular currency, except that the Fund may hedge all or part of its foreign currency exposure through the use of a basket of currencies or a proxy currency where such currencies or currency act as an effective proxy for other currencies. In such a case, the Fund may enter into a forward contract where the amount of the foreign currency to be sold exceeds the value of the securities denominated in such currency. The use of this basket hedging technique may be more efficient and economical than entering into separate forward contracts for each currency held in the Fund. The Fund may not engage in “speculative” currency exchange transactions.

     If the Fund enters into a forward contract, the Fund’s custodian will segregate liquid assets of the Fund having a value equal to the Fund’s commitment under such forward contract. At the maturity of the forward contract to deliver a particular currency, the Fund may either sell the portfolio security related to the contract and make delivery of the currency, or it may retain the security and either acquire the currency on the spot market or terminate its contractual obligation to deliver the currency by purchasing an offsetting contract with the same currency trader obligating it to purchase on the same maturity date the same amount of the currency. It is impossible to forecast with absolute precision the market value of portfolio securities at the expiration of a forward contract. Accordingly, it may be necessary for the Fund to purchase additional currency on the spot market (and bear the expense of such purchase) if the market value of the security is less than the amount of currency the Fund is obligated to deliver and if a decision is made to sell the security and make delivery of the currency. Conversely, it may be necessary to sell on the spot market some of the currency received upon the sale of the portfolio security if its market value exceeds the amount of currency the Fund is obligated to deliver.

     If the Fund retains the portfolio security and engages in an offsetting transaction, the Fund will incur a gain or a loss to the extent that there has been movement in forward contract prices. If the Fund engages in an offsetting transaction, it may subsequently enter into a new forward contract to sell the currency. Should forward prices decline during the period between the Fund’s entering into a forward contract for the sale of a currency and the date it enters into an offsetting contract for the purchase of the currency, the Fund will realize a gain to the extent the price of the currency it has agreed to sell exceeds the price of the currency it has agreed to purchase. Should forward prices increase, the Fund will suffer a loss to the extent the price of the currency it has agreed to purchase exceeds the price of the currency it has agreed to sell. A default on the contract would deprive the Fund of unrealized profits or force the Fund to cover its commitments for purchase or sale of currency, if any, at the current market price.

     Hedging against a decline in the value of a currency does not eliminate fluctuations in the value of a portfolio security traded in that currency or prevent a loss if the value of the security declines. Hedging transactions also preclude the opportunity for gain if the value of the hedged currency should rise. Moreover, it may not be possible for the Fund to hedge against a devaluation that is so generally anticipated that the Fund is not able to contract to sell the currency at a price above the devaluation level it anticipates. The cost to the Fund of engaging in currency exchange transactions varies with such factors as the currency involved, the length of the contract period, and prevailing market conditions.

     Options on Securities, Indexes and Currencies. The Fund may purchase and sell put options and call options on securities, indexes or foreign currencies. The Fund may purchase agreements, sometimes called cash puts, that may accompany the purchase of a new issue of bonds from a dealer.

     A put option gives the purchaser of the option, upon payment of a premium, the right to sell, and the writer the obligation to buy, the underlying security, commodity, index, currency or other instrument at the exercise price. For instance, the Fund’s purchase of a put option on a security might be designed to protect its holdings in the underlying instrument (or, in some cases, a similar instrument) against a substantial decline in the market value by giving the Fund the right to sell such instrument at the option exercise price. A call option, upon payment of a premium, gives the purchaser of the option the right to buy, and the seller the obligation to sell, the underlying instrument at the exercise price. The Fund’s purchase of a call option on a security, financial future, index, currency or other instrument might be intended to protect the Fund against an increase in the price of the underlying instrument that it intends to purchase in the future by fixing the price at which it may purchase such instrument.

     The Fund is authorized to purchase and sell exchange listed options and over-the-counter options (“OTC options”). Exchange listed options are issued by a regulated intermediary such as the Options Clearing Corporation (“OCC”), which guarantees the performance of the obligations of the parties to such

options. The discussion below uses the OCC as an example, but is also applicable to other financial intermediaries.

     With certain exceptions, OCC issued and exchange listed options generally settle by physical delivery of the underlying security or currency, although in the future cash settlement may become available. Index options and Eurodollar instruments are cash settled for the net amount, if any, by which the option is “in-the-money” (i.e., where the value of the underlying instrument exceeds, in the case of a call option, or is less than, in the case of a put option, the exercise price of the option) at the time the option is exercised. Frequently, rather than taking or making delivery of the underlying instrument through the process of exercising the option, listed options are closed by entering into offsetting purchase or sale transactions that do not result in ownership of the new option.

     OTC options are purchased from or sold to securities dealers, financial institutions or other parties (“Counterparties”) through direct bilateral agreement with the Counterparty. In contrast to exchange listed options, which generally have standardized terms and performance mechanics, all the terms of an OTC option, including such terms as method of settlement, term, exercise price, premium, guarantees and security, are set by negotiation of the parties. The Fund may sell OTC options (other than OTC currency options) that are subject to a buy-back provision permitting the Fund to require the Counterparty to sell the option back to the Fund at a formula price within seven days. The Fund expects generally to enter into OTC options that have cash settlement provisions, although it is not required to do so. The staff of the Securities and Exchange Commission (the “Commission”) currently takes the position that OTC options purchased by a fund, and portfolio securities “covering” the amount of a fund’s obligation pursuant to an OTC option sold by it (or the amount of assets equal to the formula price for the repurchase of the option, if any, less the amount by which the option is in the money) are illiquid.

     The Fund may also purchase and sell options on securities indices and other financial indices. Options on securities indices and other financial indices are similar to options on a security or other instrument except that, rather than settling by physical delivery of the underlying instrument, they settle by cash settlement, i.e., an option or an index gives the holder the right to receive, upon exercise of the option, an amount of cash if the closing level of the index upon which the option is based exceeds, in the case of a call, or is less than, in the case of a put, the exercise price of the option (except if, in the case of an OTC option, physical delivery is specified). This amount of cash is equal to the excess of the closing price of the index over the exercise price of the option, which also may be multiplied by a formula value. The seller of the option is obligated, in return for the premium received, to make delivery of this amount. The gain or loss on an option on an index depends on price movements in the instruments making upon the market, market segment, industry or other composite on which the underlying index is based, rather than price movements in individual securities, as is the case with respect to options on securities.

     The Fund will write call options and put options only if they are “covered.” For example, a call option written by the Fund will require the Fund to hold the securities subject to the call (or securities convertible into the needed securities without additional consideration) or to segregate cash or liquid assets sufficient to purchase and deliver the securities if the call is exercised. A call option sold by the Fund on an index will require the Fund to own portfolio securities which correlate with the index or to segregate cash or liquid assets equal to the excess of the index value over the exercise price on a current basis. A put option written by the Fund requires the Fund to segregate cash or liquid assets equal to the exercise price.

     OTC options entered into by the Fund and OCC issued and exchange listed index options will generally provide for cash settlement. As a result, when the Fund sells these instruments it will only segregate an amount of cash or liquid assets equal to its accrued net obligations, as there is no requirement for payment or delivery of amounts in excess of the net amount. These amounts will equal

100% of the exercise price in the case of a non cash-settled put, the same as an OCC guaranteed listed option sold by the Fund, or the in-the-money amount plus any sell-back formula amount in the case of a cash-settled put or call. In addition, when the Fund sells a call option on an index at a time when the in-the-money amount exceeds the exercise price, the Fund will segregate, until the option expires or is closed out, cash or cash equivalents equal in value to such excess. OCC issued and exchange listed options sold by the Fund other than those above generally settle with physical delivery, or with an election of either physical delivery or cash settlement, and the Fund will segregate an amount of cash or liquid assets equal to the full value of the option. OTC options settling with physical delivery, or with an election of either physical delivery or cash settlement, will be treated the same as other options settling with physical delivery.

     If an option written by the Fund expires, the Fund will generally realize a short-term capital gain equal to the premium received at the time the option was written. If an option purchased by the Fund expires, the Fund realizes a capital loss equal to the premium paid, which will be short-term or long-term capital loss depending on the Fund’s holding period for the option.

     The Fund will realize a short-term capital gain from a closing purchase transaction if the cost of the closing option is less than the premium received from writing the option, or, if it is more, the Fund will generally realize a short-term capital loss. If the premium received from a closing sale transaction is more than the premium paid to purchase the option, the Fund will realize a capital gain or, if it is less, the Fund will realize a capital loss, which in each case will be long-term or short-term depending on the Fund’s holding period for the option. The principal factors affecting the market value of a put or a call option include supply and demand, interest rates, the current market price of the underlying security or index in relation to the exercise price of the option, the volatility of the underlying security or index, and the time remaining until the expiration date.

     A put or call option purchased by the Fund is an asset of the Fund, valued initially at the premium paid for the option. The premium received for an option written by the Fund is recorded as a deferred credit. The value of an option purchased or written is marked-to-market daily and is valued at the closing price on the exchange on which it is traded or, if not traded on an exchange or no closing price is available, at the mean between the last bid and asked prices.

     Risks Associated with Options. There are several risks associated with transactions in options. For example, there are significant differences between the securities markets, the currency markets and the options markets that could result in an imperfect correlation among these markets, causing a given transaction not to achieve its objectives. A decision as to whether, when and how to use options involves the exercise of skill and judgment, and even a well-conceived transaction may be unsuccessful to some degree because of market behavior or unexpected events. The ability of the Fund to utilize options successfully will depend on Calamos’ ability to predict pertinent market investments, which cannot be assured.

     The Fund’s ability to close out its position as a purchaser or seller of an OCC or exchange listed put or call option is dependent, in part, upon the liquidity of the option market. Among the possible reasons for the absence of a liquid option market on an exchange are: (i) insufficient trading interest in certain options; (ii) restrictions on transactions imposed by an exchange; (iii) trading halts, suspensions or other restrictions imposed with respect to particular classes or series of options or underlying securities including reaching daily price limits; (iv) interruption of the normal operations of the OCC or an exchange; (v) inadequacy of the facilities of an exchange or OCC to handle current trading volume; or (vi) a decision by one or more exchanges to discontinue the trading of options (or a particular class or series of options), in which event the relevant market for that option on that exchange would cease to exist, although outstanding options on that exchange would generally continue to be exercisable in accordance with their terms. If the Fund were unable to close out an option that it has purchased on a security, it would have to exercise the option in order to realize any profit or the option would expire and

become worthless. If the Fund were unable to close out a covered call option that it had written on a security, it would not be able to sell the underlying security until the option expired. As the writer of a covered call option on a security, the Fund foregoes, during the option’s life, the opportunity to profit from increases in the market value of the security covering the call option above the sum of the premium and the exercise price of the call. As the writer of a covered call option on a foreign currency, the Fund foregoes, during the option’s life, the opportunity to profit from currency appreciation.

     The hours of trading for listed options may not coincide with the hours during which the underlying financial instruments are traded. To the extent that the option markets close before the markets for the underlying financial instruments, significant price and rate movements can take place in the underlying markets that cannot be reflected in the option markets.

     Unless the parties provide for it, there is no central clearing or guaranty function in an OTC option. As a result, if the Counterparty (as described above under “Options on Securities, Indexes and Currencies”) fails to make or take delivery of the security, currency or other instrument underlying an OTC option it has entered into with the Fund or fails to make a cash settlement payment due in accordance with the terms of that option, the Fund will lose any premium it paid for the option as well as any anticipated benefit of the transaction. Accordingly, Calamos must assess the creditworthiness of each such Counterparty or any guarantor or credit enhancement of the Counterparty’s credit to determine the likelihood that the terms of the OTC option will be satisfied. The Fund will engage in OTC option transactions only with U.S. government securities dealers recognized by the Federal Reserve Bank of New York as “primary dealers” or broker-dealers, domestic or foreign banks or other financial institutions which have received (or the guarantors of the obligation of which have received) a short-term credit rating of A-1 from S&P or P-1 from Moody’s or an equivalent rating from any nationally recognized statistical rating organization (“NRSRO”) or, in the case of OTC currency transactions, are determined to be of equivalent credit quality by Calamos.

     The Fund may purchase and sell call options on securities indices and currencies. All calls sold by the Fund must be “covered.” Even though the Fund will receive the option premium to help protect it against loss, a call sold by the Fund exposes the Fund during the term of the option to possible loss of opportunity to realize appreciation in the market price of the underlying security or instrument and may require the Fund to hold a security or instrument which it might otherwise have sold. As described more fully in the accompanying prospectus, this results in the potential for net asset value erosion. The Fund may purchase and sell put options on securities indices and currencies. In selling put options, there is a risk that the Fund may be required to buy the underlying security at a disadvantageous price above the market price.

     Equity Securities. Equity securities include common and preferred stocks, warrants, rights, and depository receipts. An investment in the equity securities of a company represents a proportionate ownership interest in that company. Therefore, the Fund participates in the financial success or failure of any company in which it has an equity interest. Equity investments are subject to greater fluctuations in market value than other asset classes as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions. Equity securities are subordinated to bonds and other debt instruments in a company’s capital structure in terms of priority to corporate income and liquidation payments.

     Preferred stocks involve credit risk, which is the risk that a preferred stock in the Fund’s portfolio will decline in price or fail to make dividend payments when due because the issuer of the security experiences a decline in its financial status. In addition to credit risk, investments in preferred stocks involve certain other risks. Certain preferred stocks contain provisions that allow an issuer under certain circumstances to skip distributions (in the case of “non-cumulative” preferred stocks) or defer distributions (in the case of “cumulative” preferred stocks). If the Fund owns a preferred stock that is

deferring its distributions, the Fund may be required to report income for federal income tax purposes while it is not receiving income from that stock. The Fund must distribute, at least annually, all or substantially all of its net investment income, including income from such deferred distributions, to shareholders to avoid federal income and excise taxes. See “U.S. Federal Income Tax Matters.” Therefore, if the Fund owns a preferred stock that is deferring its distributions, the Fund may have to dispose of portfolio securities under disadvantageous circumstances to generate cash, or may have to leverage itself by borrowing the cash, to satisfy distribution requirements. In certain varying circumstances, an issuer may redeem its preferred stock prior to a specified date in the event of certain tax or legal changes or at the issuer’s call. In the event of a redemption, the Fund may not be able to reinvest the proceeds at comparable rates of return. Preferred stocks typically do not provide any voting rights, except in cases when dividends are in arrears for a specified number of periods.

     Equity securities of small and medium-sized companies historically have been subject to greater investment risk than those of large companies. The risks generally associated with small and medium-sized companies include more limited product lines, markets and financial resources, lack of management depth or experience, dependency on key personnel and vulnerability to adverse market and economic developments. Accordingly, the prices of small and medium-sized company equity securities tend to be more volatile than prices of large company stocks. Further, the prices of small and medium-sized company equity securities are often adversely affected by limited trading volumes and the lack of publicly available information.

     High Yield Securities. The high yield securities in which the Fund may invest are rated Ba or lower by Moody’s or BB or lower by Standard & Poor’s or are unrated but determined by Calamos to be of comparable quality. Non-convertible debt securities rated below investment grade are commonly referred to as “junk bonds” and are considered speculative with respect to the issuer’s capacity to pay interest and repay principal.

     Below investment grade non-convertible debt securities or comparable unrated securities are commonly referred to as “junk bonds” and are considered predominantly speculative with respect to the issuer’s ability to pay interest and principal and are susceptible to default or decline in market value due to adverse economic and business developments. The market values for high yield securities tend to be very volatile, and these securities are less liquid than investment grade debt securities. For these reasons, your investment in the Fund is subject to the following specific risks:

	•		increased price sensitivity to changing interest rates and to a deteriorating economic environment;
	•		greater risk of loss due to default or declining credit quality;
	•		adverse company specific events are more likely to render the issuer unable to make interest and/or principal payments; and
	•		if a negative perception of the high yield market develops, the price and liquidity of high yield securities may be depressed. This negative perception could last for a significant period of time.

     Securities rated below investment grade are speculative with respect to the capacity to pay interest and repay principal in accordance with the terms of such securities. A rating of C from Moody’s means that the issue so rated can be regarded as having extremely poor prospects of ever attaining any real investment standing. Standard & Poor’s assigns a rating of C to issues that are currently highly vulnerable to nonpayment, and the C rating may be used to cover a situation where a bankruptcy petition has been filed or similar action taken, but payments on the obligation are being continued (a C rating is also assigned to a preferred stock issue in arrears on dividends or sinking fund payments, but that is currently paying). See Appendix B to this statement of additional information for a description of Moody’s and Standard & Poor’s ratings.

     Adverse changes in economic conditions are more likely to lead to a weakened capacity of a high yield issuer to make principal payments and interest payments than an investment grade issuer. The principal amount of high yield securities outstanding has proliferated in the past decade as an increasing number of issuers have used high yield securities for corporate financing. An economic downturn could severely affect the ability of highly leveraged issuers to service their debt obligations or to repay their obligations upon maturity. Similarly, down turns in profitability in specific industries could adversely affect the ability of high yield issuers in that industry to meet their obligations. The market values of lower quality debt securities tend to reflect individual developments of the issuer to a greater extent than do higher quality securities, which react primarily to fluctuations in the general level of interest rates. Factors having an adverse impact on the market value of lower quality securities may have an adverse effect on the Fund’s net asset value and the market value of its common shares. In addition, the Fund may incur additional expenses to the extent it is required to seek recovery upon a default in payment of principal or interest on its portfolio holdings. In certain circumstances, the Fund may be required to foreclose on an issuer’s assets and take possession of its property or operations. In such circumstances, the Fund would incur additional costs in disposing of such assets and potential liabilities from operating any business acquired.

     The secondary market for high yield securities may not be as liquid as the secondary market for more highly rated securities, a factor which may have an adverse effect on the Fund’s ability to dispose of a particular security when necessary to meet its liquidity needs. There are fewer dealers in the market for high yield securities than investment grade obligations. The prices quoted by different dealers may vary significantly and the spread between the bid and asked price is generally much larger than higher quality instruments. Under adverse market or economic conditions, the secondary market for high yield securities could contract further, independent of any specific adverse changes in the condition of a particular issuer, and these instruments may become illiquid. As a result, the Fund could find it more difficult to sell these securities or may be able to sell the securities only at prices lower than if such securities were widely traded. Prices realized upon the sale of such lower rated or unrated securities, under these circumstances, may be less than the prices used in calculating the Fund’s net asset value.

     Because investors generally perceive that there are greater risks associated with lower quality debt securities of the type in which the Fund may invest a portion of its assets, the yields and prices of such securities may tend to fluctuate more than those for higher rated securities. In the lower quality segments of the debt securities market, changes in perceptions of issuers’ creditworthiness tend to occur more frequently and in a more pronounced manner than do changes in higher quality segments of the debt securities market, resulting in greater yield and price volatility.

     If the Fund invests in high yield securities that are rated C or below, the Fund will incur significant risk in addition to the risks associated with investments in high yield securities and corporate loans. Distressed securities frequently do not produce income while they are outstanding. The Fund may purchase distressed securities that are in default or the issuers of which are in bankruptcy. The Fund may be required to bear certain extraordinary expenses in order to protect and recover its investment.

     Distressed Securities. The Fund may, but currently does not intend to, invest up to 5% of its managed assets in distressed securities, including corporate loans, which are the subject of bankruptcy proceedings or otherwise in default as to the repayment of principal and/or payment of interest at the time of acquisition by the Fund or are rated in the lower rating categories (Ca or lower by Moody’s or CC or lower by Standard & Poor’s) or which are unrated investments considered by Calamos to be of comparable quality. Investment in distressed securities is speculative and involves significant risk. Distressed securities frequently do not produce income while they are outstanding and may require the Fund to bear certain extraordinary expenses in order to protect and recover its investment. Therefore, to the extent the Fund seeks capital appreciation through investment in distressed securities, the Fund’s

ability to achieve current income for its shareholders may be diminished. The Fund also will be subject to significant uncertainty as to when and in what manner and for what value the obligations evidenced by the distressed securities will eventually be satisfied (e.g., through a liquidation of the obligor’s assets, an exchange offer or plan of reorganization involving the distressed securities or a payment of some amount in satisfaction of the obligation). In addition, even if an exchange offer is made or a plan of reorganization is adopted with respect to distressed securities held by the Fund, there can be no assurance that the securities or other assets received by the Fund in connection with such exchange offer or plan of reorganization will not have a lower value or income potential than may have been anticipated when the investment was made. Moreover, any securities received by the Fund upon completion of an exchange offer or plan of reorganization may be restricted as to resale. As a result of the Fund’s participation in negotiations with respect to any exchange offer or plan of reorganization with respect to an issuer of distressed securities, the Fund may be restricted from disposing of such securities.

     Loans. The Fund may invest up to 5% of its managed assets in loan participations and other direct claims against a borrower. The corporate loans in which the Fund may invest primarily consist of direct obligations of a borrower and may include debtor in possession financings pursuant to Chapter 11 of the U.S. Bankruptcy Code, obligations of a borrower issued in connection with a restructuring pursuant to Chapter 11 of the U.S. Bankruptcy Code, leveraged buy-out loans, leveraged recapitalization loans, receivables purchase facilities, and privately placed notes. The Fund may invest in a corporate loan at origination as a co-lender or by acquiring in the secondary market participations in, assignments of or novations of a corporate loan. By purchasing a participation, the Fund acquires some or all of the interest of a bank or other lending institution in a loan to a corporate or government borrower. The participations typically will result in the Fund having a contractual relationship only with the lender not the borrower. The Fund will have the right to receive payments of principal, interest and any fees to which it is entitled only from the lender selling the participation and only upon receipt by the lender of the payments from the borrower. Many such loans are secured, although some may be unsecured. Such loans may be in default at the time of purchase. Loans that are fully secured offer the Fund more protection than an unsecured loan in the event of non-payment of scheduled interest or principal. However, there is no assurance that the liquidation of collateral from a secured loan would satisfy the corporate borrower’s obligation, or that the collateral can be liquidated. Direct debt instruments may involve a risk of loss in case of default or insolvency of the borrower and may offer less legal protection to the Fund in the event of fraud or misrepresentation. In addition, loan participations involve a risk of insolvency of the lending bank or other financial intermediary. The markets in loans are not regulated by federal securities laws or the Commission.

     As in the case of other high yield investments, such corporate loans may be rated in the lower rating categories of the established rating services (Ba or lower by Moody’s or BB or lower by Standard & Poor’s), or may be unrated investments considered by Calamos to be of comparable quality. As in the case of other high yield investments, such corporate loans can be expected to provide higher yields than lower yielding, higher rated fixed income securities, but may be subject to greater risk of loss of principal and income. There are, however, some significant differences between corporate loans and high yield bonds. Corporate loan obligations are frequently secured by pledges of liens and security interests in the assets of the borrower, and the holders of corporate loans are frequently the beneficiaries of debt service subordination provisions imposed on the borrower’s bondholders. These arrangements are designed to give corporate loan investors preferential treatment over high yield investors in the event of a deterioration in the credit quality of the issuer. Even when these arrangements exist, however, there can be no assurance that the borrowers of the corporate loans will repay principal and/or pay interest in full. Corporate loans generally bear interest at rates set at a margin above a generally recognized base lending rate that may fluctuate on a day-to-day basis, in the case of the prime rate of a U.S. bank, or which may be adjusted on set dates, typically 30 days but generally not more than one year, in the case of the London Interbank Offered Rate. Consequently, the value of corporate loans held by the Fund may be expected to

fluctuate significantly less than the value of other fixed rate high yield instruments as a result of changes in the interest rate environment. On the other hand, the secondary dealer market for certain corporate loans may not be as well developed as the secondary dealer market for high yield bonds, and therefore presents increased market risk relating to liquidity and pricing concerns.

     Synthetic Foreign Money Market Positions. The Fund may invest in money market instruments denominated in foreign currencies. In addition to, or in lieu of, such direct investment, the Fund may construct a synthetic foreign money market position by (a) purchasing a money market instrument denominated in one currency, generally U.S. dollars, and (b) concurrently entering into a forward contract to deliver a corresponding amount of that currency in exchange for a different currency on a future date and at a specified rate of exchange. For example, a synthetic money market position in Japanese yen could be constructed by purchasing a U.S. dollar money market instrument, and entering concurrently into a forward contract to deliver a corresponding amount of U.S. dollars in exchange for Japanese yen on a specified date and at a specified rate of exchange. Because of the availability of a variety of highly liquid short-term U.S. dollar money market instruments, a synthetic money market position utilizing such U.S. dollar instruments may offer greater liquidity than direct investment in foreign currency and a concurrent construction of a synthetic position in such foreign currency, in terms of both income yield and gain or loss from changes in currency exchange rates, in general should be similar, but would not be identical because the components of the alternative investments would not be identical.

     Debt Obligations of Non-U.S. Governments. An investment in debt obligations of non-U.S. governments and their political subdivisions (sovereign debt) involves special risks that are not present in corporate debt obligations. The non-U.S. issuer of the sovereign debt or the non-U.S. governmental authorities that control the repayment of the debt may be unable or unwilling to repay principal or interest when due, and the Fund may have limited recourse in the event of a default. During periods of economic uncertainty, the market prices of sovereign debt may be more volatile than prices of debt obligations of U.S. issuers. In the past, certain non-U.S. countries have encountered difficulties in servicing their debt obligations, withheld payments of principal and interest and declared moratoria on the payment of principal and interest on their sovereign debt.

     A sovereign debtor’s willingness or ability to repay principal and pay interest in a timely manner may be affected by, among other factors, its cash flow situation, the extent of its foreign currency reserves, the availability of sufficient non-U.S. currency, the relative size of the debt service burden, the sovereign debtor’s policy toward its principal international lenders and local political constraints.

     Sovereign debtors may also be dependent on expected disbursements from non-U.S. governments, multilateral agencies and other entities to reduce principal and interest arrearages on their debt. The failure of a sovereign debtor to implement economic reforms, achieve specified levels of economic performance or repay principal or interest when due may result in the cancellation of third-party commitments to lend funds to the sovereign debtor, which may further impair such debtor’s ability or willingness to service its debts.

     Eurodollar Instruments and Samurai and Yankee Bonds. The Fund may invest in Eurodollar instruments and Samurai and Yankee bonds. Eurodollar instruments are bonds of corporate and government issuers that pay interest and principal in U.S. dollars but are issued in markets outside the United States, primarily in Europe. Samurai bonds are yen-denominated bonds sold in Japan by non-Japanese issuers. Yankee bonds are U.S. dollar-denominated bonds typically issued in the U.S. by non-U.S. governments and their agencies and non-U.S. banks and corporations. The Fund may also invest in Eurodollar Certificates of Deposit (“ECDs”), Eurodollar Time Deposits (“ETDs”) and Yankee Certificates of Deposit (“Yankee CDs”). ECDs are U.S. dollar-denominated certificates of deposit issued

by non-U.S. branches of domestic banks; ETDs are U.S. dollar-denominated deposits in a non-U.S. branch of a U.S. bank or in a non-U.S. bank; and Yankee CDs are U.S. dollar-denominated certificates of deposit issued by a U.S. branch of a non-U.S. bank and held in the U.S. These investments involve risks that are different from investments in securities issued by U.S. issuers, including potential unfavorable political and economic developments, non-U.S. withholding or other taxes, seizure of non-U.S. deposits, currency controls, interest limitations or other governmental restrictions which might affect payment of principal or interest.

     Convertible Securities. Convertible securities include any corporate debt security or preferred stock that may be converted into underlying shares of common stock. The common stock underlying convertible securities may be issued by a different entity than the issuer of the convertible securities. Convertible securities entitle the holder to receive interest payments paid on corporate debt securities or the dividend preference on a preferred stock until such time as the convertible security matures or is redeemed or until the holder elects to exercise the conversion privilege. As a result of the conversion feature, however, the interest rate or dividend preference on a convertible security is generally less than would be the case if the securities were issued in non-convertible form.

     The value of convertible securities is influenced by both the yield of non-convertible securities of comparable issuers and by the value of the underlying common stock. The value of a convertible security viewed without regard to its conversion feature (i.e., strictly on the basis of its yield) is sometimes referred to as its “investment value.” The investment value of the convertible security typically will fluctuate inversely with changes in prevailing interest rates. However, at the same time, the convertible security will be influenced by its “conversion value,” which is the market value of the underlying common stock that would be obtained if the convertible security were converted. Conversion value fluctuates directly with the price of the underlying common stock.

     If, because of a low price of the common stock, the conversion value is substantially below the investment value of the convertible security, the price of the convertible security is governed principally by its investment value. If the conversion value of a convertible security increases to a point that approximates or exceeds its investment value, the value of the security will be principally influenced by its conversion value. A convertible security will sell at a premium over its conversion value to the extent investors place value on the right to acquire the underlying common stock while holding a fixed income security. Holders of convertible securities have a claim on the assets of the issuer prior to the common stockholders, but may be subordinated to holders of similar non-convertible securities of the same issuer.

     Synthetic Convertible Securities. Calamos may create a “synthetic” convertible security by combining fixed income securities with the right to acquire equity securities. More flexibility is possible in the assembly of a synthetic convertible security than in the purchase of a convertible security. Although synthetic convertible securities may be selected where the two components are issued by a single issuer, thus making the synthetic convertible security similar to the true convertible security, the character of a synthetic convertible security allows the combination of components representing distinct issuers, when Calamos believes that such a combination would better promote the Fund’s investment objective. A synthetic convertible security also is a more flexible investment in that its two components may be purchased separately. For example, the Fund may purchase a warrant for inclusion in a synthetic convertible security but temporarily hold short-term investments while postponing the purchase of a corresponding bond pending development of more favorable market conditions.

     A holder of a synthetic convertible security faces the risk of a decline in the price of the security or the level of the index involved in the convertible component, causing a decline in the value of the call option or warrant purchased to create the synthetic convertible security. Should the price of the stock fall below the exercise price and remain there throughout the exercise period, the entire amount paid for the

call option or warrant would be lost. Because a synthetic convertible security includes the fixed-income component as well, the holder of a synthetic convertible security also faces the risk that interest rates will rise, causing a decline in the value of the fixed-income instrument.

     The Fund may also purchase synthetic convertible securities manufactured by other parties, including convertible structured notes. Convertible structured notes are fixed income debentures linked to equity, and are typically issued by investment banks. Convertible structured notes have the attributes of a convertible security; however, the investment bank that issued the convertible note assumes the credit risk associated with the investment, rather than the issuer of the underlying common stock into which the note is convertible.

     Lending of Portfolio Securities. The Fund may lend its portfolio securities to broker-dealers and banks. Any such loan must be continuously secured by collateral in cash or cash equivalents maintained on a current basis in an amount at least equal to the market value of the securities loaned by the Fund. The Fund would continue to receive the equivalent of the interest or dividends paid by the issuer on the securities loaned, and would also receive an additional return that may be in the form of a fixed fee or a percentage of the collateral. The Fund may pay reasonable fees to persons unaffiliated with the Fund for services in arranging these loans. The Fund would have the right to call the loan and obtain the securities loaned at any time on notice of not more than five business days. The Fund would not have the right to vote the securities during the existence of the loan but would call the loan to permit voting of the securities, if, in Calamos’ judgment, a material event requiring a shareholder vote would otherwise occur before the loan was repaid. In the event of bankruptcy or other default of the borrower, the Fund could experience both delays in liquidating the loan collateral or recovering the loaned securities and losses, including (a) possible decline in the value of the collateral or in the value of the securities loaned during the period while the Fund seeks to enforce its rights thereto, (b) possible subnormal levels of income and lack of access to income during this period, and (c) expenses of enforcing its rights.

     Futures Contracts and Options on Futures Contracts. The Fund may use interest rate futures contracts, index futures contracts and foreign currency futures contracts. An interest rate, index or foreign currency futures contract provides for the future sale by one party and purchase by another party of a specified quantity of a financial instrument or the cash value of an index¹ at a specified price and time. A public market exists in futures contracts covering a number of indexes (including, but not limited to: the Standard & Poor’s 500 Index, the Russell 2000 Index, the Value Line Composite Index, and the New York Stock Exchange Composite Index) as well as financial instruments (including, but not limited to: U.S. Treasury bonds, U.S. Treasury notes, Eurodollar certificates of deposit and foreign currencies). Other index and financial instrument futures contracts are available and it is expected that additional futures contracts will be developed and traded.

     The Fund may purchase and write call and put futures options. Futures options possess many of the same characteristics as options on securities, indexes and foreign currencies (discussed above). A futures option gives the holder the right, in return for the premium paid, to assume a long position (call) or short position (put) in a futures contract at a specified exercise price at any time during the period of the option. Upon exercise of a call option, the holder acquires a long position in the futures contract and

the writer is assigned the opposite short position. In the case of a put option, the opposite is true. The Fund might, for example, use futures contracts to hedge against or gain exposure to fluctuations in the general level of stock prices, anticipated changes in interest rates or currency fluctuations that might adversely affect either the value of the Fund’s securities or the price of the securities that the Fund intends to purchase. Although other techniques could be used to reduce or increase the Fund’s exposure to stock price, interest rate and currency fluctuations, the Fund may be able to achieve its desired exposure more effectively and perhaps at a lower cost by using futures contracts and futures options.

     The Fund will only enter into futures contracts and futures options that are standardized and traded on an exchange, board of trade or similar entity, or quoted on an automated quotation system.

     The success of any futures transaction depends on the investment manager correctly predicting changes in the level and direction of stock prices, interest rates, currency exchange rates and other factors. Should those predictions be incorrect, the Fund’s return might have been better had the transaction not been attempted; however, in the absence of the ability to use futures contracts, the investment manager might have taken portfolio actions in anticipation of the same market movements with similar investment results, but, presumably, at greater transaction costs. When a purchase or sale of a futures contract is made by the Fund, the Fund is required to deposit with its custodian (or broker, if legally permitted) a specified amount of cash or U.S. government securities or other securities acceptable to the broker (“initial margin”). The margin required for a futures contract is set by the exchange on which the contract is traded and may be modified during the term of the contract, although the Fund’s broker may require margin deposits in excess of the minimum required by the exchange. The initial margin is in the nature of a performance bond or good faith deposit on the futures contract, which is returned to the Fund upon termination of the contract, assuming all contractual obligations have been satisfied. The Fund expects to earn interest income on its initial margin deposits. A futures contract held by the Fund is valued daily at the official settlement price of the exchange on which it is traded. Each day the Fund pays or receives cash, called “variation margin,” equal to the daily change in value of the futures contract. This process is known as “marking-to-market.” Variation margin paid or received by the Fund does not represent a borrowing or loan by the Fund but is instead settlement between the Fund and the broker of the amount one would owe the other if the futures contract had expired at the close of the previous day. In computing net asset value, the Fund will mark-to-market its open futures positions.

     The Fund is also required to deposit and maintain margin with respect to put and call options on futures contracts written by it. Such margin deposits will vary depending on the nature of the underlying futures contract (and the related initial margin requirements), the current market value of the option and other futures positions held by the Fund. Although some futures contracts call for making or taking delivery of the underlying securities, usually these obligations are closed out prior to delivery by offsetting purchases or sales of matching futures contracts (same exchange, underlying security or index, and delivery month). If an offsetting purchase price is less than the original sale price, the Fund engaging in the transaction realizes a capital gain, or if it is more, the Fund realizes a capital loss. Conversely, if an offsetting sale price is more than the original purchase price, the Fund engaging in the transaction realizes a capital gain, or if it is less, the Fund realizes a capital loss. The transaction costs must also be included in these calculations.

     Risks Associated with Futures. There are several risks associated with the use of futures contracts and futures options. A purchase or sale of a futures contract may result in losses in excess of the amount invested in the futures contract. In trying to increase or reduce market exposure, there can be no guarantee that there will be a correlation between price movements in the futures contract and in the portfolio exposure sought. In addition, there are significant differences between the securities and futures markets that could result in an imperfect correlation between the markets, causing a given transaction not to achieve its objectives. The degree of imperfection of correlation depends on circumstances such as:

variations in speculative market demand for futures, futures options and the related securities, including technical influences in futures and futures options trading and differences between the securities markets and the securities underlying the standard contracts available for trading. For example, in the case of index futures contracts, the composition of the index, including the issuers and the weighing of each issue, may differ from the composition of the Fund’s portfolio, and, in the case of interest rate futures contracts, the interest rate levels, maturities and creditworthiness of the issues underlying the futures contract may differ from the financial instruments held in the Fund’s portfolio. A decision as to whether, when and how to use futures contracts involves the exercise of skill and judgment, and even a well-conceived transaction may be unsuccessful to some degree because of market behavior or unexpected stock price or interest rate trends.

     Futures exchanges may limit the amount of fluctuation permitted in certain futures contract prices during a single trading day. The daily limit establishes the maximum amount that the price of a futures contract may vary either up or down from the previous day’s settlement price at the end of the current trading session. Once the daily limit has been reached in a futures contract subject to the limit, no more trades may be made on that day at a price beyond that limit. The daily limit governs only price movements during a particular trading day and therefore does not limit potential losses because the limit may work to prevent the liquidation of unfavorable positions. For example, futures prices have occasionally moved to the daily limit for several consecutive trading days with little or no trading, thereby preventing prompt liquidation of positions and subjecting some holders of futures contracts to substantial losses. Stock index futures contracts are not normally subject to such daily price change limitations.

     There can be no assurance that a liquid market will exist at a time when the Fund seeks to close out a futures or futures option position. The Fund would be exposed to possible loss on the position during the interval of inability to close, and would continue to be required to meet margin requirements until the position is closed. In addition, many of the contracts discussed above are relatively new instruments without a significant trading history. As a result, there can be no assurance that an active secondary market will develop or continue to exist.

     Limitations on Options and Futures. If other options, futures contracts or futures options of types other than those described herein are traded in the future, the Fund may also use those investment vehicles, provided the Board of Trustees determines that their use is consistent with the Fund’s investment objective.

     When purchasing a futures contract or writing a put option on a futures contract, the Fund must maintain with its custodian (or broker, if legally permitted) cash or cash equivalents (including any margin) equal to the market value of such contract. When writing a call option on a futures contract, the Fund similarly will maintain with its custodian cash or cash equivalents (including any margin) equal to the amount by which such option is in the money until the option expires or is closed by the Fund.

     The Fund may not maintain open short positions in futures contracts, call options written on futures contracts or call options written on indexes if, in the aggregate, the market value of all such open positions exceeds the current value of the securities in its portfolio, plus or minus unrealized gains and losses on the open positions, adjusted for the historical relative volatility of the relationship between the portfolio and the positions. For this purpose, to the extent the Fund has written call options on specific securities in its portfolio, the value of those securities will be deducted from the current market value of the securities portfolio.

     The Fund has claimed an exclusion from registration as a commodity pool under the Commodity Exchange Act (“CEA”) and, therefore, the Fund and its officers and trustees are not subject to the registration requirements of the CEA. The Fund reserves the right to engage in transactions involving

futures and options thereon to the extent allowed by Commodity Future Trading Commission (“CFTC”) regulations in effect from time to time and in accordance with the Fund’s policies.

     Swaps and Related Swap Products. Swap transactions may include, but are not limited to, interest rate, currency, securities index, basket, specific security, fixed income sectors, commodity swaps, asset-backed swaps, interest rate caps, floors and collars and options on interest rate swaps (collectively defined as “swap transactions”). The Fund may enter into swap transactions for any legal purpose consistent with its investment objective and policies, such as for the purpose of attempting to obtain or preserve a particular return or spread at a lower cost than obtaining that return or spread through purchases and/or sales of instruments in cash markets, to protect against currency fluctuations, to protect against any increase in the price of securities the Fund anticipates purchasing at a later date, or to gain exposure to certain markets in the most economical way possible.

     Swap agreements are two-party contracts entered into primarily by institutional counterparties for periods ranging from a few weeks to several years. In a standard swap transaction, two parties agree to exchange the returns (or differentials in rates of return) that would be earned or realized on specified notional investments or instruments. The gross returns to be exchanged or “swapped” between the parties are calculated by reference to a “notional amount,” i.e., the return on or increase in value of a particular dollar amount invested at a particular interest rate, in a particular foreign currency or commodity, or in a “basket” of securities representing a particular index. The purchaser of an interest rate cap or floor, upon payment of a fee, has the right to receive payments (and the seller of the cap or floor is obligated to make payments) to the extent a specified interest rate exceeds (in the case of a cap) or is less than (in the case of a floor) a specified level over a specified period of time or at specified dates. The purchaser of an interest rate collar, upon payment of a fee, has the right to receive payments (and the seller of the collar is obligated to make payments) to the extent that a specified interest rate falls outside an agreed upon range over a specified period of time or at specified dates. The purchaser of an option on an interest rate swap, upon payment of a fee (either at the time of purchase or in the form of higher payments or lower receipts within an interest rate swap transaction) has the right, but not the obligation, to initiate a new swap transaction of a pre-specified notional amount with pre-specified terms with the seller of the option as the counterparty. The “notional amount” of a swap transaction is the agreed upon basis for calculating the payments that the parties have agreed to exchange. For example, one swap counterparty may agree to pay a floating rate of interest (e.g., 3-month LIBOR) calculated based on a $10 million notional amount on a quarterly basis in exchange for receipt of payments calculated based on the same notional amount and a fixed rate of interest on a semi-annual basis. In the event the Fund is obligated to make payments more frequently than it receives payments from the other party, it will incur incremental credit exposure to that swap counterparty. This risk may be mitigated somewhat by the use of swap agreements which call for a net payment to be made by the party with the larger payment obligation when the obligations of the parties fall due on the same date. Under most swap agreements entered into by the Fund, payments by the parties will be exchanged on a “net basis,” and the Fund will receive or pay, as the case may be, only the net amount of the two payments.

     The amount of the Fund’s potential gain or loss on any swap transaction is not subject to any fixed limit. Nor is there any fixed limit on the Fund’s potential loss if it sells a cap or collar. If the Fund buys a cap, floor or collar, however, the Fund’s potential loss is limited to the amount of the fee that it has paid. When measured against the initial amount of cash required to initiate the transaction, which is typically zero in the case of most conventional swap transactions, swaps, caps, floors and collars tend to be more volatile than many other types of instruments.

     The use of swap transactions, caps, floors and collars involves investment techniques and risks that are different from those associated with portfolio security transactions. If Calamos is incorrect in its forecasts of market values, interest rates, and other applicable factors, the investment performance of the

Fund will be less favorable than if these techniques had not been used. These instruments are typically not traded on exchanges. Accordingly, there is a risk that the other party to certain of these instruments will not perform its obligations to the Fund or that the Fund may be unable to enter into offsetting positions to terminate its exposure or liquidate its position under certain of these instruments when it wishes to do so.

     Such occurrences could result in losses to the Fund. Calamos will consider such risks and will enter into swap and other derivatives transactions only when it believes that the risks are not unreasonable. The Fund will earmark and reserve the Fund assets, in cash or liquid securities, in an amount sufficient at all times to cover its current obligations under its swap transactions, caps, floors and collars. If the Fund enters into a swap agreement on a net basis, it will earmark and reserve assets with a daily value at least equal to the excess, if any, of the Fund’s accrued obligations under the swap agreement over the accrued amount the Fund is entitled to receive under the agreement. If the Fund enters into a swap agreement on other than a net basis, or sells a cap, floor or collar, it will earmark and reserve assets with a daily value at least equal to the full amount of the Fund’s accrued obligations under the agreement. The Fund will not enter into any swap transaction, cap, floor, or collar, unless the counterparty to the transaction is deemed creditworthy by Calamos. If a counterparty defaults, the Fund may have contractual remedies pursuant to the agreements related to the transaction. The swap markets in which many types of swap transactions are traded have grown substantially in recent years, with a large number of banks and investment banking firms acting both as principals and as agents utilizing standardized swap documentation. As a result, the markets for certain types of swaps (e.g., interest rate swaps) have become relatively liquid. The markets for some types of caps, floors and collars are less liquid.

     During the term of a swap, cap, floor or collar, changes in the value of the instrument are recognized as unrealized gains or losses by marking to market to reflect the market value of the instrument. When the instrument is terminated, the Fund will record a realized gain or loss equal to the difference, if any, between the proceeds from (or cost of) the closing transaction and the Fund’s basis in the contract. The federal income tax treatment with respect to swap transactions, caps, floors, and collars may impose limitations on the extent to which the Fund may engage in such transactions.

     Credit Default Swaps. As described above, swap agreements are two-party contracts entered into primarily by institutional investors for periods ranging typically from three to 10 years, although shorter or longer periods do exist. In the case of a credit default swap (“CDS”), the contract gives one party (the buyer) the right to recoup the economic value of a decline in the value of debt securities of the reference issuer if the credit event (including a default of restructuring) occurs. This value is obtained by delivering a debt security of the reference issuer to the party in return for a previously agreed payment from the other party (frequently, the par value of the debt security) and by cash settlement of the transaction. CDS include credit default swaps, which are contracts on individual securities, and CDX, which are contracts on baskets or indices of securities.

     Credit default swaps may require initial premium (discount) payments as well as periodic payments (receipts) related to the interest leg of the swap or to the default of a reference obligation.

     If the Fund is a seller of a CDS contract, the Fund would be required to pay the par (or other agreed upon) value of a referenced debt obligation to the counterparty in the event of a default or other credit event by the reference issuer, such as a U.S. or foreign corporate issuer, with respect to such debt obligations. In return, the Fund would receive from the counterparty a periodic stream of payments over the term of the contract provided that no event of default has occurred. If no default occurs, the Fund would keep the stream of payments and would have no payment obligations. As the seller, the Fund would be subject to investment exposure on the notional amount of the swap.

     If the Fund is a buyer of a CDS contract, the Fund would have the right to deliver a referenced debt obligation and receive the par (or other agreed-upon) value of such debt obligation from the counterparty in the event of a default or other credit event (such as a credit downgrade) by the reference issuer, such as a U.S. or foreign corporation, with respect to its debt obligations. In return, the Fund would pay the counterparty a periodic stream of payments over the term of the contract provided that no event of default has occurred. If no default occurs, the counterparty would keep the stream of payments and would have no further obligations to the Fund.

     The use of CDSs, like all swap agreements, is subject to certain risks. If a counterparty’s creditworthiness declines, the value of the swap would likely decline. Moreover, there is no guarantee that the Fund could eliminate its exposure under an outstanding swap agreement by entering into an offsetting swap agreement with the same or another party.

     Warrants. The Fund may invest in warrants. A warrant is a right to purchase common stock at a specific price (usually at a premium above the market value of the underlying common stock at time of issuance) during a specified period of time. A warrant may have a life ranging from less than a year to twenty years or longer, but a warrant becomes worthless unless it is exercised or sold before expiration. In addition, if the market price of the common stock does not exceed the warrant’s exercise price during the life of the warrant, the warrant will expire worthless. Warrants have no voting rights, pay no dividends and have no rights with respect to the assets of the corporation issuing them. The percentage increase or decrease in the value of a warrant may be greater than the percentage increase or decrease in the value of the underlying common stock.

     Portfolio Turnover. Although the Fund does not purchase securities with a view to rapid turnover, there are no limitations on the length of time that portfolio securities must be held. Portfolio turnover can occur for a number of reasons, including calls for redemption, general conditions in the securities markets, more favorable investment opportunities in other securities, or other factors relating to the desirability of holding or changing a portfolio investment. The portfolio turnover rates may vary greatly from year to year. A high rate of portfolio turnover in the Fund would result in increased transaction expense. High portfolio turnover may also result in the realization of capital gains or losses and, to the extent net short term capital gains are realized, any distributions resulting from such gains will be taxed at ordinary income tax rates for federal income tax purposes.

     Short Sales. The Fund may attempt to hedge against market risk and to enhance income by selling short “against the box,” that is: (1) entering into short sales of securities that it currently has the right to acquire through the conversion or exchange of other securities that it owns, or to a lesser extent, entering into short sales of securities that it currently owns; and (2) entering into arrangements with the broker dealers through which such securities are sold short to receive income with respect to the proceeds of short sales during the period the Fund’s short positions remain open. The Fund may make short sales of securities only if at all times when a short position is open the Fund owns an equal amount of such securities or securities convertible into or exchangeable for, without payment of any further consideration, securities of the same issue as, and equal in amount to, the securities sold short.

     In a short sale against the box, the Fund does not deliver from its portfolio the securities sold and does not receive immediately the proceeds from the short sale. Instead, the Fund borrows the securities sold short from a broker dealer through which the short sale is executed, and the broker dealer delivers such securities, on behalf of the Fund, to the purchaser of such securities. Such broker dealer is entitled to retain the proceeds from the short sale until the Fund delivers to such broker dealer the securities sold short. In addition, the Fund is required to pay to the broker dealer the amount of any dividends paid on shares sold short. Finally, to secure its obligation to deliver to such broker dealer the securities sold short,

the Fund must deposit and continuously maintain in a separate account with the Fund’s custodian an equivalent amount of the securities sold short or securities convertible into or exchangeable for such securities without the payment of additional consideration. The Fund is said to have a short position in the securities sold until it delivers to the broker dealer the securities sold, at which time the Fund receives the proceeds of the sale. Because the Fund ordinarily will want to continue to hold securities in its portfolio that are sold short, the Fund will normally close out a short position by purchasing on the open market and delivering to the broker dealer an equal amount of the securities sold short, rather than by delivering portfolio securities.

     A short sale works the same way, except that the Fund places in the segregated account cash or U.S. government securities equal in value to the difference between (i) the market value of the securities sold short at the time they were sold short and (ii) any cash or U.S. government securities required to be deposited with the broker as collateral. In addition, so long as the short position is open, the Fund must adjust daily the value of the segregated account so that the amount deposited in it, plus any amount deposited with the broker as collateral, will equal the current market value of the security sold short. However, the value of the segregated account may not be reduced below the point at which the segregated account, plus any amount deposited with the broker, is equal to the market value of the securities sold short at the time they were sold short.

     Short sales may protect the Fund against the risk of losses in the value of its portfolio securities because any unrealized losses with respect to such portfolio securities should be wholly or partially offset by a corresponding gain in the short position. However, any potential gains in such portfolio securities should be wholly or partially offset by a corresponding loss in the short position. The extent to which such gains or losses are offset will depend upon the amount of securities sold short relative to the amount the Fund owns, either directly or indirectly, and, in the case where the Fund owns convertible securities, changes in the conversion premium. Short sale transactions of the Fund involve certain risks. In particular, the imperfect correlation between the price movements of the convertible securities and the price movements of the underlying common stock being sold short creates the possibility that losses on the short sale hedge position may be greater than gains in the value of the portfolio securities being hedged. In addition, to the extent that the Fund pays a conversion premium for a convertible security, the Fund is generally unable to protect against a loss of such premium pursuant to a short sale hedge. In determining the number of shares to be sold short against the Fund’s position in the convertible securities, the anticipated fluctuation in the conversion premiums is considered. The Fund will also incur transaction costs in connection with short sales. Certain provisions of the Internal Revenue Code of 1986, as amended (the “Code”) (and related Treasury regulations thereunder) may limit the degree to which the Fund is able to enter into short sales and other transactions with similar effects without triggering adverse tax consequences, which limitations might impair the Fund’s ability to achieve its investment objective. See “U.S. Federal Income Tax Matters.”

     In addition to enabling the Fund to hedge against market risk, short sales may afford the Fund an opportunity to earn additional current income to the extent the Fund is able to enter into arrangements with broker dealers through which the short sales are executed to receive income with respect to the proceeds of the short sales during the period the Fund’s short positions remain open.

     Interest Rate Transactions. In order to seek to reduce the interest rate risk inherent in the Fund’s underlying investments and capital structure, the Fund, if market conditions are deemed favorable, likely will enter into interest rate swap or cap transactions to attempt to protect itself from increasing dividend or interest expenses on its leverage. Interest rate swaps involve the Fund’s agreement with the swap counterparty to pay a fixed rate payment in exchange for the counterparty agreeing to pay the Fund a payment at a variable rate that is expected to approximate the rate on any variable rate payment obligation on the Fund’s leverage. The payment obligations would be based on the notional amount of

the swap. The Fund may use an interest rate cap, which would require it to pay a premium to the cap counterparty and would entitle it, to the extent that a specified variable rate index exceeds a predetermined fixed rate, to receive from the counterparty payment of the difference based on the notional amount. The Fund would use interest rate swaps or caps only with the intent to reduce or eliminate the risk that an increase in short term interest rates could have on common share net earnings as a result of leverage.

     The Fund will usually enter into swaps or caps on a net basis; that is, the two payment streams will be netted out in a cash settlement on the payment date or dates specified in the instrument, with the Fund receiving or paying, as the case may be, only the net amount of the two payments. The Fund intends to segregate with its custodian cash or liquid securities having a value at least equal to the Fund’s net payment obligations under any swap transaction, marked to market daily.

     The use of interest rate swaps and caps is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio security transactions. Depending on the state of interest rates in general, the Fund’s use of interest rate swaps or caps could enhance or harm the overall performance on the common shares. To the extent there is a decline in interest rates, the value of the interest rate swap or cap could decline, and could result in a decline in the net asset value of the common shares. In addition, if short term interest rates are lower than the Fund’s fixed rate of payment on the interest rate swap, the swap will reduce common share net earnings. If, on the other hand, short term interest rates are higher than the fixed rate of payment on the interest rate swap, the swap will enhance common share net earnings. Buying interest rate caps could enhance the performance of the common shares by providing a maximum leverage expense. Buying interest rate caps could also decrease the net earnings of the common shares in the event that the premium paid by the Fund to the counterparty exceeds the additional amount the Fund would have been required to pay had it not entered into the cap agreement. The Fund has no current intention of selling an interest rate swap or cap.

     Interest rate swaps and caps do not involve the delivery of securities or other underlying assets or principal. Accordingly, the risk of loss with respect to interest rate swaps is limited to the net amount of interest payments that the Fund is contractually obligated to make. If the counterparty defaults, the Fund would not be able to use the anticipated net receipts under the swap or cap to offset the dividend or interest payments on the Fund’s leverage. Depending on whether the Fund would be entitled to receive net payments from the counterparty on the swap or cap, which in turn would depend on the general state of short term interest rates at that point in time, such a default could negatively impact the performance of the common shares.

     Although this will not guarantee that the counterparty does not default, the Fund will not enter into an interest rate swap or cap transaction with any counterparty that Calamos believes does not have the financial resources to honor its obligation under the interest rate swap or cap transaction. Further, Calamos will continually monitor the financial stability of a counterparty to an interest rate swap or cap transaction in an effort to proactively protect the Fund’s investments.

     In addition, at the time the interest rate swap or cap transaction reaches its scheduled termination date, there is a risk that the Fund would not be able to obtain a replacement transaction or that the terms of the replacement would not be as favorable as on the expiring transaction. If this occurs, it could have a negative impact on the performance of the Fund’s portfolio.

     Under certain circumstances, the Fund may choose or be required to redeem some or all of the preferred shares or prepay any borrowings. This redemption would likely result in the Fund seeking to terminate early all or a portion of any swap or cap transaction. Such early termination of a swap could result in termination payment by or to the Fund. An early termination of a cap could result in a termination payment to the Fund.

     Swaps, Caps, Floors and Collars. The Fund may enter into interest rate, currency, index and other swaps and the purchase or sale of related caps, floors and collars. The Fund expects to enter into these transactions primarily to preserve a return or spread on a particular investment or portion of its portfolio, to protect against currency fluctuations, as a duration management technique or to protect against any increase in the price of securities the Fund anticipates purchasing at a later date. The Fund will not sell interest rate caps or floors where it does not own securities or other instruments providing the income stream the Fund may be obligated to pay. Interest rate swaps involve the exchange by the Fund with another party of their respective commitments to pay or receive interest, e.g., an exchange of floating rate payments for fixed rate payments with respect to a notional amount of principal. A currency swap is an agreement to exchange cash flows on a notional amount of two or more currencies based on the relative value differential among them and an index swap is an agreement to swap cash flows on a notional amount based on changes in the values of the reference indices. The purchase of a cap entitles the purchaser to receive payments on a notional principal amount from the party selling such cap to the extent that a specified index exceeds a predetermined interest rate or amount. The purchase of a floor entitles the purchaser to receive payments on a notional principal amount from the party selling such floor to the extent that a specified index falls below a predetermined interest rate or amount. A collar is a combination of a cap and a floor that preserves a certain return within a predetermined range of interest rates or values.

     The Fund will usually enter into swaps on a net basis, i.e., the two payment streams are netted out in a cash settlement on the payment date or dates specified in the instrument, with the Fund receiving or paying, as the case may be, only the net amount of the two payments. Inasmuch as the Fund will segregate assets (or enter into offsetting positions) to cover its obligations under swaps, Calamos and the Fund believe such obligations do not constitute senior securities under the Investment Company Act of 1940 (the “1940 Act”) and, accordingly, will not treat them as being subject to its borrowing restrictions. The Fund will not enter into any swap, cap, floor or collar transaction unless, at the time of entering into such transaction, the unsecured long-term debt of the Counterparty, combined with any credit enhancements, is rated at least A by S&P or Moody’s or has an equivalent rating from a NRSRO or is determined to be of equivalent credit quality by Calamos. If there is a default by the Counterparty, the Fund may have contractual remedies pursuant to the agreements related to the transaction. The swap market has grown substantially in recent years with a large number of banks and investment banking firms acting both as principals and as agents utilizing standardized swap documentation. As a result, the swap market has become relatively liquid, however, some swaps may be considered illiquid. Caps, floors and collars are more recent innovations for which standardized documentation has not yet been fully developed and, accordingly, they are less liquid than swaps.

     Structured Products. The Fund may invest in interests in entities organized and operated for the purpose of restructuring the investment characteristics of certain other investments. This type of restructuring involves the deposit with or purchase by an entity, such as a corporation or trust, of specified instruments and the issuance by that entity of one or more classes of securities (“structured products”) backed by, or representing interests in, the underlying instruments. The term “structured products” as used herein excludes synthetic convertibles and interest rate transactions. See “Investment Objective and Policies—Synthetic Convertible Securities and Interest Rate Transactions.” The cash flow on the underlying instruments may be apportioned among the newly issued structured products to create securities with different investment characteristics such as varying maturities, payment priorities and interest rate provisions, and the extent of the payments made with respect to structured products is dependent on the extent of the cash flow on the underlying instruments. The Fund may invest in structured products, which represent derived investment positions based on relationships among different markets or asset classes.

     The Fund may also invest in other types of structured products, including, among others, baskets of credit default swaps referencing a portfolio of high yield securities. A structured product may be considered to be leveraged to the extent its interest rate varies by a magnitude that exceeds the magnitude of the change in the index rate. Because they are linked to their underlying markets or securities, investments in structured products generally are subject to greater volatility than an investment directly in the underlying market or security. Total return on the structured product is derived by linking return to one or more characteristics of the underlying instrument. Because certain structured products of the type in which the Fund may invest may involve no credit enhancement, the credit risk of those structured products generally would be equivalent to that of the underlying instruments. The Fund may invest in a class of structured products that is either subordinated or unsubordinated to the right of payment of another class. Subordinated structured products typically have higher yields and present greater risks than unsubordinated structured products. Although the Fund’s purchase of subordinated structured products would have similar economic effect to that of borrowing against the underlying securities, the purchase will not be deemed to be leverage for purposes of the Fund’s limitations related to borrowing and leverage.

     Certain issuers of structured products may be deemed to be “investment companies” as defined in the 1940 Act. As a result, the Fund’s investments in these structured products may be limited by the restrictions contained in the 1940 Act. Structured products are typically sold in private placement transactions, and there currently may be active trading market for structured products. As a result, certain structured products in which the Fund invests may be deemed illiquid and subject to its limitation on illiquid investments.

     “When Issued” and Delayed Delivery Securities and Reverse Repurchase Agreements. The Fund may purchase securities on a when issued or delayed delivery basis. Although the payment and interest terms of these securities are established at the time the Fund enters into the commitment, the securities may be delivered and paid for a month or more after the date of purchase, when their value may have changed. The Fund makes such commitments only with the intention of actually acquiring the securities, but may sell the securities before settlement date if Calamos deems it advisable for investment reasons. The Fund may utilize spot and forward foreign currency exchange transactions to reduce the risk inherent in fluctuations in the exchange rate between one currency and another when securities are purchased or sold on a when issued or delayed delivery basis.

     The Fund may enter into reverse repurchase agreements with banks and securities dealers. A reverse repurchase agreement is a repurchase agreement in which the Fund is the seller of, rather than the investor in, securities and agrees to repurchase them at an agreed upon time and price. Use of a reverse repurchase agreement may be preferable to a regular sale and later repurchase of securities because it avoids certain market risks and transaction costs.

     At the time when the Fund enters into a binding obligation to purchase securities on a when-issued basis or enters into a reverse repurchase agreement, liquid securities (cash, U.S. Government securities or other “high grade” debt obligations) of the Fund having a value at least as great as the purchase price of the securities to be purchased will be segregated on the books of the Fund and held by the custodian throughout the period of the obligation. The use of these investment strategies may increase net asset value fluctuation.

     Illiquid Securities. Investments in Rule 144A Securities could have the effect of increasing the amount of the Fund’s assets invested in illiquid securities if qualified institutional buyers are unwilling to purchase these Rule 144A Securities. Illiquid securities may be difficult to dispose of at a fair price at the times when the Fund believes it is desirable to do so. The market price of illiquid securities generally is more volatile than that of more liquid securities, which may adversely affect the price that the Fund pays

for or recovers upon the sale of illiquid securities. Illiquid securities are also more difficult to value and Calamos’ judgment may play a greater role in the valuation process. Investment of the Fund’s assets in illiquid securities may restrict the Fund’s ability to take advantage of market opportunities. The risks associated with illiquid securities may be particularly acute in situations in which the Fund’s operations require cash and could result in the Fund borrowing to meet its short term needs or incurring losses on the sale of illiquid securities.

     The Fund may invest in bonds, corporate loans, convertible securities, preferred stocks and other securities that lack a secondary trading market or are otherwise considered illiquid. Liquidity of a security relates to the ability to easily dispose of the security and the price to be obtained upon disposition of the security, which may be less than would be obtained for a comparable more liquid security. Such investments may affect the Fund’s ability to realize the net asset value in the event of a voluntary or involuntary liquidation of its assets.

     Temporary Defensive Investments. The Fund may make temporary investments without limitation when Calamos determines that a defensive position is warranted. Such investments may be in money market instruments, consisting of obligations of, or guaranteed as to principal and interest by, the U.S. Government or its agencies or instrumentalities; certificates of deposit, bankers’ acceptances and other obligations of domestic banks having total assets of at least $500 million and that are regulated by the U.S. Government, its agencies or instrumentalities; commercial paper rated in the highest category by a recognized rating agency; and repurchase agreements.

     Repurchase Agreements. As part of its strategy for the temporary investment of cash, the Fund may enter into “repurchase agreements” with member banks of the Federal Reserve System or primary dealers (as designated by the Federal Reserve Bank of New York) in such securities. A repurchase agreement arises when the Fund purchases a security and simultaneously agrees to resell it to the vendor at an agreed upon future date. The resale price is greater than the purchase price, reflecting an agreed upon market rate of return that is effective for the period of time the Fund holds the security and that is not related to the coupon rate on the purchased security. Such agreements generally have maturities of no more than seven days and could be used to permit the Fund to earn interest on assets awaiting long-term investment. The Fund requires continuous maintenance by the custodian for the Fund’s account in the Federal Reserve/Treasury Book Entry System of collateral in an amount equal to, or in excess of, the market value of the securities that are the subject of a repurchase agreement. Repurchase agreements maturing in more than seven days are considered illiquid securities. In the event of a bankruptcy or other default of a seller of a repurchase agreement, the Fund could experience both delays in liquidating the underlying security and losses, including: (a) possible decline in the value of the underlying security during the period while the Fund seeks to enforce its rights thereto; (b) possible subnormal levels of income and lack of access to income during this period; and (c) expenses of enforcing its rights.

     Real Estate Investment Funds (“REITs”) and Associated Risk Factors. REITs are pooled investment vehicles which invest primarily in income producing real estate or real estate related loans or interests. REITs are generally classified as equity REITs, mortgage REITs or a combination of equity and mortgage REITs. Equity REITs invest the majority of their assets directly in real property and derive income primarily from the collection of rents. Equity REITs can also realize capital gains by selling properties that have appreciated in value. Mortgage REITs invest the majority of their assets in real estate mortgages and derive income from the collection of interest payments. REITs are not taxed on income distributed to shareholders provided they comply with the applicable requirements of the Code. The Fund will indirectly bear its proportionate share of any management and other expenses paid by REITs in which it invests in addition to the expenses paid by the Fund. Debt securities issued by REITs are, for the most part, general and unsecured obligations and are subject to risks associated with REITs.

     Investing in REITs involves certain unique risks in addition to those risks associated with investing in the real estate industry in general. An equity REIT may be affected by changes in the value of the underlying properties owned by the REIT. A mortgage REIT may be affected by changes in interest rates and the ability of the issuers of its portfolio mortgages to repay their obligations. REITs are dependent upon the skills of their managers and are not diversified. REITs are generally dependent upon maintaining cash flows to repay borrowings and to make distributions to shareholders and are subject to the risk of default by lessees or borrowers. REITs whose underlying assets are concentrated in properties used by a particular industry, such as health care, are also subject to risks associated with such industry.

     REITs (especially mortgage REITs) are also subject to interest rate risks. When interest rates decline, the value of a REIT’s investment in fixed rate obligations can be expected to rise. Conversely, when interest rates rise, the value of a REIT’s investment in fixed rate obligations can be expected to decline. If the REIT invests in adjustable rate mortgage loans the interest rates on which are reset periodically, yields on a REIT’s investments in such loans will gradually align themselves to reflect changes in market interest rates. This causes the value of such investments to fluctuate less dramatically in response to interest rate fluctuations than would investments in fixed rate obligations.

     REITs may have limited financial resources, may trade less frequently and in a limited volume and may be subject to more abrupt or erratic price movements than larger company securities. Historically REITs have been more volatile in price than the larger capitalization stocks included in Standard & Poor’s 500 Stock Index.

     Other Investment Companies. The Fund may invest in the securities of other investment companies to the extent that such investments are consistent with the Fund’s investment objective and policies and permissible under the 1940 Act. Under the 1940 Act, the Fund may not acquire the securities of other domestic or non U.S. investment companies if, as a result, (i) more than 10% of the Fund’s total assets would be invested in securities of other investment companies, (ii) such purchase would result in more than 3% of the total outstanding voting securities of any one investment company being held by the Fund, or (iii) more than 5% of the Fund’s total assets would be invested in any one investment company. These limitations do not apply to the purchase of shares of money market funds or any investment company in connection with a merger, consolidation, reorganization or acquisition of substantially all the assets of another investment company.

     The Fund, as a holder of the securities of other investment companies, will bear its pro rata portion of the other investment companies’ expenses, including advisory fees. These expenses are in addition to the direct expenses of the Fund’s own operations.

INVESTMENT RESTRICTIONS

     The following are the Fund’s fundamental investment restrictions. These restrictions may not be changed without the approval of the holders of a majority of the Fund’s outstanding voting securities (which for this purpose and under the 1940 Act means the lesser of (i) 67% of the common shares represented at a meeting at which more than 50% of the outstanding common shares are represented or (ii) more than 50% of the outstanding common shares). If the Fund were to issue a class of preferred shares, the investment restrictions could not be changed without the approval of a majority of the outstanding common and preferred shares, voting together as a class, and the approval of a majority of the outstanding preferred shares, voting separately by class.

     The Fund may not:

	(1)		Issue senior securities, except as permitted by the 1940 Act and the rules and interpretive positions of the Commission thereunder.
	(2)		Borrow money, except as permitted by the 1940 Act and the rules and interpretive positions of the Commission thereunder.
	(3)		Invest in real estate, except that the Fund may invest in securities of issuers that invest in real estate or interests therein, securities that are secured by real estate or interests therein, securities of real estate investment funds and mortgage backed securities.
	(4)		Make loans, except by the purchase of debt obligations, by entering into repurchase agreements or through the lending of portfolio securities and as otherwise permitted by the 1940 Act and the rules and interpretive positions of the Commission thereunder.
	(5)		Invest in physical commodities or contracts relating to physical commodities.
	(6)		Act as an underwriter, except as it may be deemed to be an underwriter in a sale of securities held in its portfolio.
	(7)		Make any investment inconsistent with the Fund’s classification as a diversified investment company under the 1940 Act and the rules and interpretive positions of the Commission thereunder.
	(8)		Concentrate its investments in securities of companies in any particular industry as defined in the 1940 Act and the rules and interpretive positions of the Commission thereunder.

     All other investment policies of the Fund are considered non-fundamental and may be changed by the Board of Trustees without prior approval of the Fund’s outstanding voting shares.

     Currently under the 1940 Act, the Fund is not permitted to issue preferred shares unless immediately after such issuance the net asset value of the Fund’s portfolio is at least 200% of the liquidation value of the outstanding preferred shares (i.e., such liquidation value may not exceed 50% of the value of the Fund’s total assets). In addition, currently under the 1940 Act, the Fund is not permitted to declare any cash dividend or other distribution on its common shares unless, at the time of such declaration, the net asset value of the Fund’s portfolio (determined after deducting the amount of such dividend or distribution) is at least 200% of such liquidation value plus any senior securities representing indebtedness. Currently under the 1940 Act, the Fund is not permitted to incur indebtedness unless immediately after such borrowing the Fund has asset coverage of at least 300% of the aggregate outstanding principal balance of indebtedness (i.e., such indebtedness may not exceed 33 1/3% of the value of the Fund’s total assets). Additionally, currently under the 1940 Act, the Fund may not declare any dividend or other distribution upon any class of its shares, or purchase any such shares, unless the aggregate indebtedness of the Fund has, at the time of the declaration of any such dividend or distribution or at the time of any such purchase, an asset coverage of at least 300% after deducting the amount of such dividend, distribution, or purchase price, as the case may be.

     Currently under the 1940 Act, the Fund is not permitted to lend money or property to any person, directly or indirectly, if such person controls or is under common control with the Fund, except for a loan from the Fund to a company which owns all of the outstanding securities of the Fund, except directors’ qualifying shares. Currently, under interpretative positions of the Commission, the Fund may not have on loan at any given time securities representing more than one third of its total assets.

     Currently under the 1940 Act, a “senior security” does not include any promissory note or evidence of indebtedness where such loan is for temporary purposes only and in an amount not exceeding 5% of the value of the total assets of the issuer at the time the loan is made. A loan is presumed to be for temporary purposes if it is repaid within sixty days and is not extended or renewed.

     Currently, the Fund would be deemed to “concentrate” in a particular industry if it invested 25% or more of its total assets in that industry. Currently under the 1940 Act, a “diversified company” means a management company which meets the following requirements: at least 75% of the value of its total assets is represented by cash and cash items (including receivables), government securities, securities of other investment companies, and other securities for the purposes of this calculation limited in respect of any one issuer to an amount not greater in value than 5% of the value of the total assets of such management company and not more than 10% of the outstanding voting securities of such issuer.

     Under the 1940 Act, the Fund may invest up to 10% of its total assets in the aggregate in shares of other investment companies and up to 5% of its total assets in any one investment company, provided the investment does not represent more than 3% of the voting stock of the acquired investment company at the time such shares are purchased. These limitations, however, do not apply to the purchase of shares of money market funds. As a shareholder in any investment company, the Fund will bear its ratable share of that investment company’s expenses, and would remain subject to payment of the Fund’s advisory fees and other expenses with respect to assets so invested. In addition, the securities of other investment companies may also be leveraged and will therefore be subject to the same leverage risks described herein and in the prospectus. As described in the prospectus in the section entitled “Risks,” the net asset value and market value of leveraged shares will be more volatile and the yield to shareholders will tend to fluctuate more than the yield generated by unleveraged shares.

     In addition, to comply with federal income tax requirements for qualification as a “regulated investment company,” the Fund’s investments will be limited by both an income and an asset test. See “U.S. Federal Income Tax Matters.”

     As a non-fundamental policy, the Fund may not issue preferred shares, borrow money or issue debt securities with an aggregate liquidation value and principal amount exceeding 38% of the Fund’s total assets.

MANAGEMENT OF THE FUND

     Trustees and Officers. The Fund’s Board of Trustees provides broad supervision over the Fund’s affairs. The officers of the Fund are responsible for the Fund’s operations. The Fund’s Trustees and officers are listed below, together with their age, positions held with the Fund, term of office and length of service and principal occupations during the past five years. Asterisks indicates those Trustees who are interested persons of the Fund within the meaning of the 1940 Act, and they are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a Trustee of other investment companies (17 U.S. registered investment portfolios) for which Calamos serves as investment adviser (collectively, the “Calamos Funds”). The address for all Independent and Interested Trustees and all officers of the Fund is 2020 Calamos Court, Naperville, Illinois 60563.

Trustees who are interested persons of the Fund:

								Principal
		Position(s) With						Occupation(s) and
Name and Age		Fund		Portfolios Overseen				Other Directorships
John P. Calamos, Sr., 66*		Trustee and President (since inception)			17			Chairman, CEO, and Co-Chief Investment Officer, Calamos Asset Management, Inc. (“CAM”), Calamos Holdings LLC (“CHLLC”) and Calamos Advisors LLC and its predecessor (“Calamos Advisors”), and President and Co-Chief Investment Officer, Calamos Financial Services LLC and its predecessor (“CFS”); Director, CAM

Trustees who are not interested persons of the Fund:

								Principal
		Position(s) With						Occupation(s) and
Name and Age		Fund		Portfolios Overseen				Other Directorships
Joe F. Hanauer, 69		Trustee (since inception)			17			Private investor; Director, MAF Bancorp (bank holding company); Chairman and Director, Move, Inc., (internet provider of real estate information and products); Director, Combined Investments, L.P. (investment management) (investment management)
Weston W. Marsh, 56		Trustee (since inception)			17			Of Counsel, Partner, Freeborn & Peters (law firm)
John E. Neal, 57		Trustee (since inception)			17			Private investor; Managing Director, Banc One Capital Markets, Inc. (investment banking) (2000-2004); Director, Focused Health Services (private disease management company), Equity Residential (publicly-owned REIT), Ranir LLC (oral products company) and CBA Commercial (commercial mortgage securitization company); Partner, Private Perfumery LLC (private label perfume company) and Linden LLC (health care private equity)
William R. Rybak, 56		Trustee (since inception)			17			Private investor; formerly Executive Vice President and Chief Financial Officer, Van Kampen Investments, Inc. and subsidiaries (investment manager); Director, Howe Barnes Hoefer Arnett, Inc. (investment services firm) and PrivateBancorp, Inc. (bank holding company); Trustee, JNL Series Trust, JNL Investors Series Trust, JNL Variable Fund LLC and JNLNY Variable Fund I LLC**
Stephen B. Timbers, 62		Trustee (since inception)			17			Private investor; formerly Vice Chairman, Northern Trust Corporation (bank holding company); formerly President and Chief Executive Officer, Northern Trust Investments, N.A. (investment manager); formerly President, Northern Trust Global

								Principal
		Position(s) With						Occupation(s) and
Name and Age		Fund		Portfolios Overseen				Other Directorships
								Investments, a division of Northern Trust Corporation and Executive Vice President, The Northern Trust Corporation; formerly, Director, Northern Trust Securities, Inc.
David D. Tripple, 63		Trustee (since inception)			17			Private investor; Trustee, Century Shares Trust and Century Small Cap Select Fund***

     Officers. The preceding table gives information about Mr. John Calamos, who is president of the Fund. The following table sets forth each other officer’s name and age as of the date of this statement of additional information, position with the Fund and date first appointed to that position, and principal occupation(s) during the past five years. Each officer serves until his or her successor is chosen and qualified or until his or her resignation or removal by the board of trustees.

				Principal Occupation(s) and
Name and Age		Position(s) with Fund		Other Directorships
Nimish S. Bhatt, 43		Treasurer (since inception)		Senior Vice President and Director of Operations, CAM, CHLLC, Calamos Advisors and CFS (since 2004); Senior Vice President, Alternative Investments and Tax Services, The BISYS Group, Inc., prior thereto
Nick P. Calamos, 45		Vice President (since inception)		Senior Executive Vice President and Co-Chief Investment Officer, CAM, CHLLC, Calamos Advisors and CFS
Patrick H. Dudasik, 52		Vice President (since inception)		Executive Vice President, Chief Financial Officer, Chief Operating Officer and Treasurer, CAM and CHLLC (since 2004), Calamos Advisors and CFS (2001-2005)
James S. Hamman, Jr., 37		Secretary (since inception)		Executive Vice President, Secretary and General Counsel, CAM, CHLLC, Calamos Advisors and CFS; Chief Compliance Officer, Calamos Funds (2004-2005)
Mark J. Mickey, 56		Chief Compliance Officer (since inception)		Chief Compliance Officer, Calamos Funds (since 2005) and Chief Compliance Officer, Calamos Advisors (2005-2006); Director of Risk Assessment and Internal Audit, Calamos Advisors (2003-2005); President, Mark Mickey Consulting (2002-2003);

     The Fund’s Board of Trustees consists of seven members. The term of one class expires each year commencing with the first annual meeting following this public offering and no term shall continue for more than three years after the applicable election. The terms of John P. Calamos, Sr. and William R. Rybak expire at the first annual meeting following this public offering, the terms of Joe F. Hanauer, John E. Neal and David D. Tripple expire at the second annual meeting, and the terms of Stephen B. Timbers and Weston W. Marsh expire at the third annual meeting. Subsequently, each class of Trustees will stand for election at the conclusion of its respective term. Such classification may prevent replacement of a majority of the Trustees for up to a two year period. Each officer serves until his or her successor is chosen and qualified or until his or her resignation or removal by the Board of Trustees.

     Committees of the Board of Trustees. The Fund’s Board of Trustees currently has four standing committees:

     Executive Committee. Messrs. John Calamos and Stephen B. Timbers are members of the Executive Committee, which has authority during intervals between meetings of the Board of Trustees to exercise the powers of the Board, with certain exceptions.

     Audit Committee. Stephen B. Timbers, Joe F. Hanauer, John E. Neal, William R. Rybak, Weston W. Marsh and David D. Tripple, each a non-interested Trustee, serve on the Audit Committee. The Audit Committee approves the selection of the independent auditors to the Trustees, approves services to be rendered by the auditors, monitors the auditors’ performance, reviews the results of the Fund’s audit, determines whether to recommend to the Board that the Fund’s audited financial statements be included in the Fund’s annual report and responds to other matters deemed appropriate by the Board of Trustees.

     Governance Committee. Stephen B. Timbers, Joe F. Hanauer, John E. Neal, William R. Rybak, Weston W. Marsh and David D. Tripple, each a non-interested Trustee, serve on the Governance Committee. The Governance Committee oversees the independence and effective functioning of the Board of Trustees and endeavors to be informed about good practices for fund boards. The members of the Governance Committee make recommendations to the Board of Trustees regarding candidates for election as non interested Trustees. The Governance Committee will not consider shareholder recommendations regarding candidates for election as Trustees.

     Valuation Committee. David D. Tripple, Stephen B. Timbers and Weston W. Marsh, each a non-i nterested Trustee, serve on the Valuation Committee. The Valuation Committee oversees the implementation of the valuation procedures adopted by the Board of Trustees. The members of the Valuation Committee make recommendations to the Board of Trustees regarding valuation matters relating to the Fund.

     In addition to the above committees, there is a Board of Trustees directed pricing committee comprised of officers of the Fund and employees of Calamos.

     The Fund’s Agreement and Declaration of Trust provides that the Fund will indemnify the Trustees and officers against liabilities and expenses incurred in connection with any claim in which they may be involved because of their offices with the Fund, unless it is determined in the manner specified in the Agreement and Declaration of Trust that they have not acted in good faith in the reasonable belief that their actions were in the best interests of the Fund or that such indemnification would relieve any officer or Trustee of any liability to the Fund or its shareholders by reason of willful misfeasance, bad faith, gross negligence or reckless disregard of his or her duties.

     Compensation of Officers and Trustees. The Fund pays no salaries or compensation to any of its officers or to the Trustees who are affiliated persons of Calamos. The following table sets forth certain information with respect to the compensation paid to each Trustee by the Fund and the Calamos Fund Complex as a group. Compensation from the Fund is for the current calendar year and is estimated.

Total compensation from the Calamos Fund Complex as a group is for the calendar year ended December 31, 2006.

						Total Compensation
		Estimated Aggregate				From Calamos Fund
Name of Trustee		Compensation From Fund				Complex(1)*
John P. Calamos Sr.		$	0			$	0
Joe F. Hanauer		$	2,864			$	105,500
Weston W. Marsh		$	2,945			$	108,500
John E. Neal		$	3,386			$	124,750
William Rybak		$	3,166			$	116,625
Stephen B. Timbers		$	4,031			$	148,500
David D. Tripple		$	2,945			$	108,500

     The Fund has adopted a deferred compensation plan (the “Plan”). Under the Plan, a Trustee who is not an “interested person” of Calamos and who has elected to participate in the Plan (“participating Trustees”) may defer receipt of all or a portion of his compensation from Fund in order to defer payment of income taxes or for other reasons. The deferred compensation payable to the participating Trustee is credited to Trustee’s deferral account as of the business day such compensation would have been paid to the Trustee. The value of a Trustee’s deferred compensation account at any time is equal to what would be the value if the amounts credited to the account had instead been invested in shares of one or more of the portfolios of Calamos Investment Trust as designated by the Trustee. Thus, the value of the account increases with contributions to the account or with increases in the value of the measuring shares, and the value of the account decreases with withdrawals from the account or with declines in the value of the measuring shares. If a participating trustee retires, the Trustee may elect to receive payments under the plan in a lump sum or in equal installments over a period of five years. If a participating Trustee dies, any amount payable under the Plan will be paid to the Trustee’s beneficiaries.

     Ownership of Shares of the Fund and Other Calamos Funds. The following table indicates the value of shares that each Trustee beneficially owns in the Fund and the Calamos Fund Complex in the aggregate. The value of shares of the Calamos Funds is determined on the basis of the net asset value of the class of shares held as of December 31, 2006. The value of the shares held, are stated in ranges in accordance with the requirements of the Commission. The table reflects the Trustee’s beneficial ownership of shares of the Calamos Fund Complex. Beneficial ownership is determined in accordance with the rules of the Commission.

						Aggregate Dollar
						Range of Equity
						Securities in All
						Registered Investment
		Dollar Range of				Companies in the
		Equity Securities in				Calamos
Name of Trustee		the Fund				Funds
Interested Trustees:
John P. Calamos		None				Over $100,000
Non-Interested Trustees:
Joe F. Hanauer		None				Over $100,000
Weston W. Marsh		None				Over $100,000
John E. Neal		None				Over $100,000
William Rybak		None				Over $100,000
Stephen B. Timbers		None				Over $100,000
David D. Tripple		None				Over $100,000

     CODE OF ETHICS. The Fund and Calamos have adopted a code of ethics under Rule 17j-1 of the 1940 Act which is applicable to officers, directors/Trustees and designated employees of Calamos and CFS. Employees of Calamos and CFS are permitted to make personal securities transactions, including transactions in securities that the Fund may purchase, sell or hold, subject to requirements and restrictions set forth in the code of ethics of Calamos and CFS. The code of ethics contains provisions and requirements designed to identify and address certain conflicts of interest between personal investment activities of Calamos and CFS employees and the interests of investment advisory clients such as the Fund. Among other things, the code of ethics prohibits certain types of transactions absent prior approval, imposes time periods during which personal transactions may not be made in certain securities, and requires the submission of duplicate broker confirmations and statements and quarterly reporting of securities transactions. Additional restrictions apply to portfolio managers, traders, research analysts and others involved in the investment advisory process. Exceptions to these and other provisions of the code of ethics may be granted in particular circumstances after review by appropriate personnel. Text only versions of the code of ethics can be viewed online or downloaded from the EDGAR Database on the Commission’s internet web site at www.sec.gov. You may review and copy the code of ethics by visiting the Commission’s Public Reference Room in Washington, D.C. Information on the operation of the Public Reference Room may be obtained by calling the Commission at 202-942-8090. In addition, copies of the code of ethics may be obtained, after mailing the appropriate duplicating fee, by writing to the Commission’s Public Reference Section, 100 F Street, N.E., Room 1580, Washington, DC 20549 or by e mail request at publicinfo@sec.gov.

     PROXY VOTING PROCEDURES. The Fund has delegated proxy voting responsibilities to Calamos, subject to the Board of Trustees’ general oversight. The Fund expects Calamos to vote proxies related to the Fund’s portfolio securities for which the Fund has voting authority consistent with the Fund’s best economic interests. Calamos has adopted its own Proxy Voting Policies and Procedures (“Policies”). The Policies address, among other things, conflicts of interest that may arise between the interests of the Fund, and the interests of the adviser and its affiliates.

      The following is a summary of the Policies used by Calamos in voting proxies.

     To assist it in voting proxies, Calamos has established a Committee comprised of members of its Portfolio Management and Research Departments. The Committee and/or its members will vote proxies using the following guidelines.

     In general, if Calamos believes that a company’s management and board have interests sufficiently aligned with the Fund’s interest, Calamos will vote in favor of proposals recommended by a

company’s board. More specifically, Calamos seeks to ensure that the board of directors of a company is sufficiently aligned with security holders’ interests and provides proper oversight of the company’s management. In many cases this may be best accomplished by having a majority of independent board members. Although Calamos will examine board member elections on a case-by-case basis, it will generally vote for the election of directors that would result in a board comprised of a majority of independent directors.

     Because of the enormous variety and complexity of transactions that are presented to shareholders, such as mergers, acquisitions, reincorporations, adoptions of anti-take over measures (including adoption of a shareholder rights plan, requiring supermajority voting on particular issues, adoption of fair price provisions, issuance of blank check preferred stocks and the creation of a separate class of stock with unequal voting rights), changes to capital structures (including authorizing additional shares, repurchasing stock or approving a stock split), executive compensation and option plans, that occur in a variety of industries, companies and market cycles, it is extremely difficult to foresee exactly what would be in the best interests of the Fund in all circumstances. Moreover, voting on such proposals involves considerations unique to each transaction. Accordingly, Calamos will vote on a case-by-case basis on proposals presenting these transactions.

     Finally, Calamos has established procedures to help resolve conflicts of interests that might arise when voting proxies for the Fund. These procedures provide that the Committee, along with Calamos’ Legal and Compliance Departments, will examine conflicts of interests with the Fund of which Calamos is aware and seek to resolve such conflicts in the best interests of the Fund, irrespective of any such conflict. If a member of the Committee has a personal conflict of interest, that member will refrain from voting and the remainder of the Committee will determine how to vote the proxy solely on the investment merits of any proposal. The Committee will then memorialize the conflict and the procedures used to address the conflict.

     You may obtain a copy a Calamos’ Policies by calling 1-800-582-6959, by visiting the Fund’s website at www.calamos.com, by writing Calamos at: Calamos Investments, Attn: Client Services, 2020 Calamos Court, Naperville, IL 60563, and on the Commission’s website at www.sec.gov.

     INVESTMENT ADVISER AND INVESTMENT MANAGEMENT AGREEMENT. Subject to the overall authority of the Board of Trustees, Calamos provides the Fund with investment research, advice and supervision and furnishes continuously an investment program for the Fund. In addition, Calamos furnishes for use of the Fund such office space and facilities as the Fund may require for its reasonable needs and supervises the business and affairs of the Fund and provides the following other services on behalf of the Fund and not provided by persons not a party to the investment management agreement: (i) preparing or assisting in the preparation of reports to and meeting materials for the Trustees; (ii) supervising, negotiating contractual arrangements with, to the extent appropriate, and monitoring the performance of, accounting agents, custodians, depositories, transfer agents and pricing agents, accountants, attorneys, printers, underwriters, brokers and dealers, insurers and other persons in any capacity deemed to be necessary or desirable to Fund operations; (iii) assisting in the preparation and making of filings with the Commission and other regulatory and self-regulatory organizations, including, but not limited to, preliminary and definitive proxy materials, amendments to the Fund’s registration statement on Form N-2 and semi-annual reports on Form N-SAR and Form N-CSR; (iv) overseeing the tabulation of proxies by the Fund’s transfer agent; (v) assisting in the preparation and filing of the Fund’s federal, state and local tax returns; (vi) assisting in the preparation and filing of the Fund’s federal excise tax return pursuant to Section 4982 of the Code; (vii) providing assistance with investor and public relations matters; (viii) monitoring the valuation of portfolio securities and the calculation of net asset value; (ix) monitoring the registration of shares of beneficial interest of the Fund under applicable federal and state securities laws; (x) maintaining or causing to be maintained for the Fund all books, records and

reports and any other information required under the 1940 Act, to the extent that such books, records and reports and other information are not maintained by the Fund’s custodian or other agents of the Fund; (xi) assisting in establishing the accounting policies of the Fund; (xii) assisting in the resolution of accounting issues that may arise with respect to the Fund’s operations and consulting with the Fund’s independent accountants, legal counsel and the Fund’s other agents as necessary in connection therewith; (xiii) reviewing the Fund’s bills; (xiv) assisting the Fund in determining the amount of dividends and distributions available to be paid by the Fund to its shareholders, preparing and arranging for the printing of dividend notices to shareholders, and providing the transfer and dividend paying agent, the custodian, and the accounting agent with such information as is required for such parties to effect the payment of dividends and distributions; and (xv) otherwise assisting the Fund as it may reasonably request in the conduct of the Fund’s business, subject to the direction and control of the Trustees.

     Under the investment management agreement, the Fund pays to Calamos a fee based on the average weekly managed assets that is computed weekly and paid on a monthly basis. The fee paid by the Fund is at the annual rate of 1.00% of average weekly managed assets. Because the fees paid to Calamos are determined on the basis of the Fund’s managed assets, Calamos’ interest in determining whether to leverage the Fund may differ from the interests of the Fund.

     Under the terms of its investment management agreement with the Fund, except for the services and facilities provided by Calamos as set forth therein, the Fund shall assume and pay all expenses for all other Fund operations and activities and shall reimburse Calamos for any such expenses incurred by Calamos. The expenses borne by the Fund shall include, without limitation: (a) organization expenses of the Fund (including out of pocket expenses, but not including Calamos’ overhead or employee costs); (b) fees payable to Calamos; (c) legal expenses; (d) auditing and accounting expenses; (e) maintenance of books and records that are required to be maintained by the Fund’s custodian or other agents of the Fund; (f) telephone, telex, facsimile, postage and other communications expenses; (g) taxes and governmental fees; (h) fees, dues and expenses incurred by the Fund in connection with membership in investment company trade organizations and the expense of attendance at professional meetings of such organizations; (i) fees and expenses of accounting agents, custodians, subcustodians, transfer agents, dividend disbursing agents and registrars; (j) payment for portfolio pricing or valuation services to pricing agents, accountants, bankers and other specialists, if any; (k) expenses of preparing share certificates; (l) expenses in connection with the issuance, offering, distribution, sale, redemption or repurchase of securities issued by the Fund; (m) expenses relating to investor and public relations provided by parties other than Calamos; (n) expenses and fees of registering or qualifying shares of beneficial interest of the Fund for sale; (o) interest charges, bond premiums and other insurance expenses; (p) freight, insurance and other charges in connection with the shipment of the Fund’s portfolio securities; (q) the compensation and all expenses (specifically including travel expenses relating to Fund business) of Trustees, officers and employees of the Fund who are not affiliated persons of Calamos; (r) brokerage commissions or other costs of acquiring or disposing of any portfolio securities of the Fund; (s) expenses of printing and distributing reports, notices and dividends to shareholders; (t) expenses of preparing and setting in type, printing and mailing prospectuses and statements of additional information of the Fund and supplements thereto; (u) costs of stationery; (v) any litigation expenses; (w) indemnification of Trustees and officers of the Fund; (x) costs of shareholders’ and other meetings; (y) interest on borrowed money, if any; and (z) the fees and other expenses of listing the Fund’s shares on the New York Stock Exchange or any other national stock exchange.

     The investment management agreement was initially approved by the Board on May 16, 2007. A discussion regarding the basis of the Board’s decision to approve the investment management agreement will be available in the Fund’s first Annual Report to shareholders for the period ending October 31, 2007. Unless earlier terminated as described below, the investment management agreement will remain in effect until August 1, 2008. The investment management agreement continues in effect from year to year so long as such continuation is approved at least annually by (1) the board of trustees or the vote of a majority of the outstanding voting securities (as defined in the 1940 Act) of the Fund, and (2) a majority of the trustees who are not interested persons of any party to the investment management agreement, cast

in person at a meeting called for the purpose of voting on such approval. The investment management agreement may be terminated at any time, without penalty, by either the Fund or Calamos upon 60 days’ written notice, and is automatically terminated in the event of its assignment as defined in the 1940 Act.

PORTFOLIO MANAGERS

      Calamos employs a team approach to portfolio management, with teams comprised generally of the Co-Chief Investment Officers (the “Co-CIOs”), senior strategy analysts, intermediate analysts and junior analysts. The Co-CIOs, directors and senior strategy analysts are supported by deal and lead a team of investment professionals whose valuable contributions create a synergy of expertise that can be applied across many different investment strategies. John P. Calamos, Sr., Co-CIO of Calamos, generally focuses on the top-down approach of diversification by industry sector and macro-level investment themes, Nick P. Calamos, Co-CIO of Calamos, also focuses on the top-down approach of diversification by industry sector and macro-level investment themes and, in addition, focuses on the bottom-up approach and corresponding research and analysis. John P. Calamos, Jr., John Hillenbrand, Steve Klouda, Jeff Scudieri and Jon Vacko are each senior strategy analysts, and Matthew Toms is Director of Fixed Income. The Co-CIOs, directors and senior strategy analysts are referred to collectively as “Team Leaders.”

     The Team Leaders also have responsibility for the day-to-day management of accounts other than the Fund. Information regarding these other accounts is set forth below:

     The Fund’s Team Leaders are responsible for managing the Fund and other accounts, including separate accounts and unregistered funds.

Number of Other Accounts Managed and Assets by Account Type as of October 31, 2006*
		Registered Investment				Other Pooled Investment
Portfolio Manager		Companies				Vehicles				Other Accounts
		Accounts		Assets		Accounts		Assets		Accounts		Assets
John P. Calamos		19		$ 34,265,733,500		3		$ 157,150,982		24,107		$ 11,411,070,978
Nick P. Calamos		19		$ 34,265,733,500		3		$ 157,150,982		24,107		$ 11,411,070,978
John P. Calamos, Jr.		19		$ 34,265,733,500		3		$ 157,150,982		24,107		$ 11,411,070,978
John Hillenbrand		18		$ 33,391,823,326		2		$ 144,807,710		24,107		$ 11,411,070,978
Steve Klouda		18		$ 33,391,823,326		2		$ 144,807,710		24,107		$ 11,411,070,978
Jeff Scudieri		18		$ 33,391,823,326		2		$ 144,807,710		24,107		$ 11,411,070,978
Matthew Toms**		—		—		—		—		—		—
Jon Vacko		18		$ 33,391,823,326		2		$ 144,807,710		24,107		$ 11,411,070,978

Number of Accounts Managed and Assets for Which Advisory Fee Is Performance Based as of October 31, 2006*
		Registered Investment				Other Pooled Investment
Portfolio Manager		Companies				Vehicles				Other Accounts
		Accounts		Assets		Accounts		Assets		Accounts		Assets
John P. Calamos		1		$ 298,895,958		2		$ 95,215,600		1		$ 9,326,764
Nick P. Calamos		1		$ 298,895,958		2		$ 95,215,600		1		$ 9,326,764
John P. Calamos, Jr.		1		$ 298,895,958		2		$ 95,215,600		1		$ 9,326,764
John Hillenbrand		1		$ 298,895,958		1		$ 82,872,327		1		$ 9,326,764
Steve Klouda		1		$ 298,895,958		1		$ 82,872,327		1		$ 9,326,764
Jeff Scudieri		1		$ 298,895,958		1		$ 82,872,327		1		$ 9,326,764
Matthew Toms**		—		—		—		—		—		—
Jon Vacko		1		$ 298,895,958		1		$ 82,872,327		1		$ 9,326,764

*		Each Team Leader may invest for his own benefit in securities held in brokerage and mutual fund accounts. The information shown in the table does not include information about those accounts where the Team Leader or members of his family have beneficial or pecuniary interest because no advisory relationship exists with Calamos or any of its affiliates.
**		Matthew Toms joined Calamos in March 2007 and information regarding the number of accounts managed by Mr. Toms is not yet available.

     Other than potential conflicts between investment strategies, the side-by-side management of both the Fund and other accounts may raise potential conflicts of interest due to the interest held by Calamos in an account and certain trading practices used by the portfolio managers (e.g., cross trades between the Fund and another account and allocation aggregated trades). Calamos has developed policies and procedures reasonably designed to mitigate those conflicts. For example, Calamos will only place cross-trades in securities held by the Fund in accordance with the rules promulgated under the 1940 Act and has adopted policies designed to ensure the fair allocation of securities purchased on an aggregated basis. The allocation methodology employed by Calamos varies depending on the type of securities sought to be bought or sold and the type of client or group of clients. Generally, however, orders are placed first for those clients that have given Calamos brokerage discretion (including the ability to step out a portion of trades), and then to clients that have directed Calamos to execute trades through a specific broker. However, if the directed broker allows Calamos to execute with other brokerage firms, which then book the transaction directly with the directed broker, the order will be placed as if the client had given Calamos full brokerage discretion. Calamos and its affiliates frequently use a "rotational" method of placing and aggregating client orders and will build and fill a position for a designated client or group of clients before placing orders for other clients.

S-35

     FUND ACCOUNTANT. Under the arrangements with State Street Bank and Trust Company ("State Street") to provide fund accounting services, State Street provides certain administrative and accounting services including providing daily reconciliation of cash, trades and positions; maintaining general ledger and capital stock accounts; preparing daily trial balance; calculating net asset value; providing selected general ledger reports; preferred share compliance; calculating total returns; and providing monthly distribution analysis to the Fund and such other funds advised by Calamos that may be part of those arrangements (the Fund and such other funds are collectively referred to as the "Calamos Funds"). For the services rendered to the Calamos Funds, State Street receives fees based on the combined managed assets of the Calamos Funds ("Combined Assets"). State Street receives a fee at the annual rate of 0.009% for the first $5.0 billion of Combined Assets, 0.0075% for the next $5.0 billion of Combined Assets, 0.005% for the next $5.0 billion of Combined Assets and 0.0035% for the Combined Assets in excess of $15.0 billion. Each fund of the Calamos Funds pays its pro-rata share of the fees payable to State Street described below based on relative managed assets of each fund.

      Calamos, and not State Street, will provide the following financial accounting services to Calamos Funds: management of expenses and expense payment processing; monitor the calculation of expense accrual amounts for any fund and make any necessary modifications; coordinate any expense reimbursement calculations and payment; calculate yields on the funds in accordance with rules and regulations of the Commission; calculate net investment income dividends and capital gains distributions; calculate, track and report tax adjustments on all assets of each fund, including but not limited to contingent debt and preferred trust obligations; prepare excise tax and fiscal year distributions schedules; prepare tax information required for financial statement footnotes; prepare state and federal income tax returns; prepare specialized calculations of amortization on convertible securities; prepare year-end dividend disclosure information; calculate trustee deferred compensation plan accruals and valuations; and prepare Form 1099 information statements for Board members and service providers. For providing those financial accounting services, Calamos will receive a fee payable monthly at the annual rate of 0.0175% on the first $1 billion of the average daily net assets of the Calamos Funds; 0.0150% on the next $1 billion of the average daily net assets of the Calamos Funds; and 0.0110% on the average daily net assets of the Calamos Funds above $2 billion ("financial accounting service fee"). Each fund of the Calamos Funds will pay its pro-rata share of the financial accounting service fee payable to Calamos based on relative managed assets of each fund.

PORTFOLIO TRANSACTIONS

     Portfolio transactions on behalf of the Fund effected on stock exchanges involve the payment of negotiated brokerage commissions. There is generally no stated commission in the case of securities traded in the over-the-counter markets, but the price paid by the Fund usually includes an undisclosed dealer commission or mark-up. In underwritten offerings, the price paid by the Fund includes a disclosed, fixed commission or discount retained by the underwriter or dealer.

     In executing portfolio transactions, Calamos uses its best efforts to obtain for the Fund the most favorable combination of price and execution available. In seeking the most favorable combination of price and execution, Calamos considers all factors it deems relevant, including price, the size of the transaction, the nature of the market for the security, the amount of commission, the timing of the transaction taking into account market prices and trends, the execution capability of the broker-dealer and the quality of service rendered by the broker-dealer in other transactions.

     The Trustees have determined that portfolio transactions for the Fund may be executed through CFS if, in the judgment of Calamos, the use of CFS is likely to result in prices and execution at least as favorable to the Funds as those available from other qualified brokers and if, in such transactions, CFS charges the Fund commission rates consistent with those charged by CFS to comparable unaffiliated customers in similar transactions. The Board of Trustees, including a majority of the Trustees who are not “interested” trustees, has adopted procedures that are reasonably designed to provide that any commissions, fees or other remuneration paid to CFS are consistent with the foregoing standard. The Fund will not effect principal transactions with CFS.

     Consistent with the Rules of Fair Practice of the National Association of Securities Dealers, Inc. and subject to seeking the most favorable combination of net price and execution available and such other policies as the Trustees may determine, Calamos may consider sales of shares of the Fund as a factor in the selection of broker dealers to execute portfolio transactions for that Fund.

     In allocating the Fund’s portfolio brokerage transactions to unaffiliated broker-dealers, Calamos may take into consideration the research, analytical, statistical and other information and services provided by the broker-dealer, such as general economic reports and information, reports or analyses of particular companies or industry groups, market timing and technical information, and the availability of the brokerage firm’s analysts for consultation. Although Calamos believes these services have substantial value, they are considered supplemental to Calamos’ own efforts in the performance of its duties under the management agreement. As permitted by Section 28(e) of the 1934 Act, Calamos may pay a broker-dealer that provides brokerage and research services an amount of commission for effecting a securities transaction for the Fund in excess of the commission that another broker-dealer would have charged for effecting that transaction if the amount is believed by Calamos to be reasonable in relation to the value of the overall quality of the brokerage and research services provided. Other clients of Calamos may indirectly benefit from the provision of these services to Calamos, and the Fund may indirectly benefit from services provided to Calamos as a result of transactions for other clients.

NET ASSET VALUE

     Net asset value per share is determined as of the close of regular session trading on the New York Stock Exchange (usually 4:00 p.m., Eastern time), on the last business day in each week. Net asset value is calculated by dividing the value of all of the securities and other assets of the Fund, less its liabilities (including accrued expenses and indebtedness) and the aggregate liquidation value of any outstanding preferred shares, by the total number of common shares outstanding. Currently, the net asset values of shares of publicly traded closed-end investment companies investing in debt securities are published in Barron’s, the Monday edition of The Wall Street Journal and the Monday and Saturday editions of The New York Times.

     The values of the securities in the Fund are based on market prices from the primary market in which they are traded. As a general rule, equity securities listed on a U.S. securities exchange are valued at the last current reported sale price as of the time of valuation. Securities quoted on the NASDAQ National Market System are valued at the NASDAQ Official Closing Price (“NOCP”), as determined by NASDAQ, or lacking an NOCP, at the last current reported sale price as of the time of valuation. Bonds and other fixed-income securities that are traded over the counter and on an exchange will be valued according to the broadest and most representative market, and it is expected this will ordinarily be the over-the-counter market. The foreign securities held by the Fund are traded on exchanges throughout the world. Trading on these foreign securities exchanges is completed at various times throughout the day and often does not coincide with the close of trading on the New York Stock Exchange. The value of foreign securities is determined at the close of trading of the exchange on which the securities are traded or at the close of trading on the New York Stock Exchange, whichever is earlier. If market prices are not readily available or the Fund’s valuation methods do not produce a value reflective of the fair value of the security, securities and other assets are priced at a fair value as determined by the Board of Trustees or a committee thereof, subject to the Board of Trustees’ responsibility for any such valuation.

ADDITIONAL INFORMATION CONCERNING THE AUCTIONS FOR PREFERRED SHARES

General

     The Depository Trust Company (“DTC”) will act as the Securities Depository with respect to the Preferred Shares. One certificate for all of the shares of each series will be registered in the name of Cede & Co., as nominee of the Securities Depository. Such certificate will bear a legend to the effect that such certificate is issued subject to the provisions restricting transfers of shares of the Preferred Shares contained in the Statement. The Fund will also issue stop-transfer instructions to the transfer agent for the Preferred Shares. Prior to the commencement of the right of holders of the Preferred Shares to elect a majority of the Fund’s Trustees, as described under “Description of the Preferred Shares—Voting Rights” in the prospectus, Cede & Co. will be the holder of record of the Preferred Shares and owners of such shares will not be entitled to receive certificates representing their ownership interest in such shares.

     DTC, a New York-chartered limited purpose trust company, performs services for its participants, some of whom (and/or their representatives) own DTC. DTC maintains lists of its participants and will maintain the positions (ownership interests) held by each such participant in Preferred Shares, whether for its own account or as a nominee for another person.

Concerning the Auction Agent

     The auction agent (the “Auction Agent”) will act as agent for the Fund in connection with the auctions of the Preferred Shares (the “Auctions”). In the absence of willful misconduct or gross negligence on its part, the Auction Agent will not be liable for any action taken, suffered, or omitted or

for any error of judgment made by it in the performance of its duties under the auction agency agreement between the Fund and the Auction Agent and will not be liable for any error of judgment made in good faith unless the Auction Agent was grossly negligent in ascertaining the pertinent facts.

     The Auction Agent may conclusively rely upon, as evidence of the identities of the holders of the Preferred Shares, the Auction Agent’s registry of holders, and the results of Auctions and notices from any Broker-Dealer (or other person, if permitted by the Fund) with respect to transfers described under “The Auction—Secondary Market Trading and Transfers of the Preferred Shares” in the prospectus and notices from the Fund. The Auction Agent is not required to accept any such notice for an Auction unless it is received by the Auction Agent by 3:00 p.m., New York City time, on the business day preceding such Auction.

     The Auction Agent may terminate its auction agency agreement with the Fund upon notice to the Fund on a date no earlier than 60 days after such notice. If the auction agent should resign, the Fund will use its best efforts to enter into an agreement with a successor auction agent containing substantially the same terms and conditions as the auction agency agreement. The Fund may remove the auction agent provided that prior to such removal the Fund has entered into such an agreement with a successor Auction Agent.

Broker-Dealers

     The Auction Agent after each Auction for the Preferred Shares will pay to each Broker-Dealer, from funds provided by the Fund, a service charge at the annual rate of 1/4 of 1% in the case of any auction immediately preceding the dividend period of less than one year, or a percentage agreed to by the Fund and the Broker-Dealer in the case of any Auction immediately preceding a dividend period of one year or longer, of the purchase price of the Preferred Shares placed by such Broker-Dealer at such auction. For the purposes of the preceding sentence, the Preferred Shares will be placed by a Broker-Dealer if such shares were (a) the subject of hold orders deemed to have been submitted to the Auction Agent by the Broker-Dealer and were acquired by such Broker-Dealer for its customers who are beneficial owners or (b) the subject of an order submitted by such Broker-Dealer that is (i) a submitted bid of an existing holder that resulted in the existing holder continuing to hold such shares as a result of the Auction or (ii) a submitted bid of a potential bidder that resulted in the potential holder purchasing such shares as a result of the auction or (iii) a valid hold order.

     The Fund may request the Auction Agent to terminate one or more Broker-Dealer agreements at any time, provided that at least one Broker-Dealer agreement is in effect after such termination.

     The Broker-Dealer agreement provides that a Broker-Dealer (other than an affiliate of the Fund) may submit orders in Auctions for its own account, unless the Fund notifies all Broker-Dealers that they may no longer do so, in which case Broker-Dealers may continue to submit hold orders and sell orders for their own accounts. Any Broker-Dealer that is an affiliate of the Fund may submit orders in Auctions, but only if such orders are not for its own account. If a Broker-Dealer submits an order for its own account in any Auction, it might have an advantage over other bidders because it would have knowledge of all orders submitted by it in that Auction; such Broker-Dealer, however, would not have knowledge of orders submitted by other Broker-Dealers in that Auction.

U.S. FEDERAL INCOME TAX MATTERS

     The following is a summary discussion of certain U.S. federal income tax consequences that may be relevant to a shareholder that acquires, holds and/or disposes of Preferred Shares of the Fund. This discussion only addresses certain U.S. federal income tax consequences to U.S. shareholders who hold their

shares as capital assets and does not address all of the U.S. federal income tax consequences that may be relevant to particular shareholders in light of their individual circumstances. This discussion also does not address the tax consequences to shareholders who are subject to special rules, including, without limitation, financial institutions, insurance companies, dealers in securities or foreign currencies, foreign holders, persons who hold their shares as or in a hedge against currency risk, a constructive sale, or conversion transaction, holders who are subject to the alternative minimum tax, or tax-exempt or tax-deferred plans, accounts, or entities. In addition, the discussion does not address any state, local, or foreign tax consequences. The discussion reflects applicable tax laws of the United States as of the date of this Statement of Additional Information, which tax laws may be changed or subject to new interpretations by the courts or the Internal Revenue Service (“IRS”) retroactively or prospectively. No attempt is made to present a detailed explanation of all U.S. federal income tax concerns affecting the Fund and its shareholders, and the discussion set forth herein does not constitute tax advice. INVESTORS ARE URGED TO CONSULT THEIR OWN TAX ADVISERS TO DETERMINE THE SPECIFIC TAX CONSEQUENCES TO THEM OF INVESTING IN THE FUND, INCLUDING THE APPLICABLE FEDERAL, STATE, LOCAL AND FOREIGN TAX CONSEQUENCES TO THEM AND THE EFFECT OF POSSIBLE CHANGES IN TAX LAWS.

     The Fund intends to elect to be treated, and to qualify each year, as a “regulated investment company” under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”), so that it will not pay U.S. federal income tax on investment company taxable income (determined without regard to the deduction for dividends paid) and net capital gains timely distributed to shareholders. If the Fund qualifies as a regulated investment company and distributes to its shareholders at least 90% of the sum of (i) its “investment company taxable income” as that term is defined in the Code (which includes, among other things, dividends, taxable interest, the excess of any net short-term capital gains over net long-term capital losses and certain net foreign exchange gains, less certain deductible expenses) without regard to the deduction for dividends paid and (ii) the excess of its gross tax-exempt interest, if any, over certain disallowed deductions, the Fund will be relieved of U.S. federal income tax on any income of the Fund, including long-term capital gains, distributed to shareholders. However, if the Fund retains any investment company taxable income or “net capital gain” (i.e., the excess of net long-term capital gain over the sum of net short-term capital loss and any capital loss carryforward), it will be subject to U.S. federal income tax at regular corporate rates on the amount retained. The Fund intends to distribute at least annually all or substantially all of its investment company taxable income, net tax-exempt interest, and net capital gain.

     Under the Code, the Fund will also be subject to a nondeductible 4% federal excise tax on its undistributed ordinary income for a calendar year and its capital gains for the one year period generally ending on October 31 of such calendar year if it fails to meet certain distribution requirements with respect to that year. The Fund intends to make distributions in a timely manner and in an amount sufficient to avoid such tax and accordingly does not expect to be subject to this excise tax.

     If for any taxable year the Fund does not qualify as a regulated investment company for U.S. federal income tax purposes, it would be treated in the same manner as a regular corporation subject to U.S. federal income tax and distributions to its shareholders would not be deductible by the Fund in computing its taxable income. In such event, the Fund’s distributions, to the extent derived from the Fund’s current or accumulated earnings and profits, would generally constitute ordinary dividends, which would generally be eligible for the dividends received deduction available to corporate shareholders. Furthermore, individual and other noncorporate shareholders would generally be able to treat such distributions as qualified dividend income eligible for reduced rates of federal income taxation under Section 1(h)(11) of the Code, as described below.

     In order to qualify as a regulated investment company under Subchapter M of the Code, the Fund must, among other things, derive at least 90% of its gross income for each taxable year from (i) dividends, interest, payments with respect to securities loans, gains from the sale or other disposition of stock,

securities or foreign currencies, or other income (including gains from options, futures and forward contracts) derived with respect to its business of investing in such stock, securities or currencies and (ii) net income derived from interests in certain publicly traded partnerships that derive less than 90% of their gross income from the items described in (i) above (each, a “Qualified Publicly Traded Partnership”) (the “90% income test”). For purposes of the 90% income test, the character of income earned by certain entities in which the Fund invests that are not treated as corporations (e.g., partnerships other than Qualified Publicly Traded Partnerships) for U.S. federal income tax purposes will generally pass through to the Fund. Consequently, the Fund may be required to limit its equity investments in such entities.

     In addition to the 90% income test, the Fund must also diversify its holdings (the “asset test”) so that, at the end of each quarter of its taxable year (i) at least 50% of the market value of the Fund’s total assets is represented by cash and cash items, U.S. government securities, securities of other regulated investment companies and other securities, with such other securities of any one issuer limited for the purposes of this calculation to an amount not greater in value than 5% of the value of the Fund’s total assets and to not more than 10% of the outstanding voting securities of such issuer, and (ii) not more than 25% of the value of its total assets is invested in the securities (other than U.S. government securities or securities of other regulated investment companies) of any one issuer or of two or more issuers controlled by the Fund and engaged in the same, similar or related trades or businesses, or in the securities of one or more Qualified Publicly Traded Partnerships.

     Under present law and based in part on the fact that there is no express or implied agreement between or among a Broker-Dealer or any other party, and the Fund or any owners of Preferred Shares, that the Broker-Dealer or any other party will guarantee or otherwise arrange to ensure that an owner of Preferred Shares will be able to sell his or her shares, it is anticipated that the Preferred Shares will constitute stock of the Fund for U.S. federal income tax purposes, and thus distributions with respect to the Preferred Shares (other than distributions in redemption of the Preferred Shares subject to section 302(b) of the Code) will generally constitute dividends to the extent of the Fund’s current or accumulated earnings and profits, as calculated for U.S. federal income tax purposes. The following discussion assumes such treatment will apply. Distributions in excess of current and accumulated earnings and profits of the Fund are treated first as return of capital to the extent of the shareholder’s basis in the Preferred Shares and, after the adjusted basis is reduced to zero, will be treated as capital gain to a holder of Preferred Shares that holds such shares as a capital asset. Earnings and profits are treated, for U.S. federal income tax purposes, as first being used to pay distributions on the Preferred Shares, and then to the extent remaining, if any, to pay distributions on the common shares.

     Dividends from investment company taxable income, which includes dividends, taxable interest, net short-term capital gain in excess of net long-term capital loss and certain net foreign exchange gains, determined without regard to the deduction for dividends paid are, except as discussed below, taxable as ordinary income to the extent of the Fund’s current and accumulated earnings and profits. A portion of such dividends may qualify for the dividends received deduction available to corporations under Section 243 of the Code and the reduced rate of taxation under Section 1(h)(11) of the Code that applies to qualified dividend income received by individual and other noncorporate shareholders. For taxable years beginning on or before December 31, 2010, qualified dividend income received by individual and other noncorporate shareholders is taxed at rates equivalent to long-term capital gains, which currently reach a maximum of 15%. Qualified dividend income generally includes dividends from domestic corporations and dividends from qualified foreign corporations that meet certain specified criteria, although dividends paid by REITs will not generally be eligible for treatment as qualified dividend income. For these purposes, a qualified foreign corporation is a foreign corporation (i) that is incorporated in a possession of the United States or is eligible for benefits under a qualifying income tax treaty with the United States, or (ii) whose stock with respect to which such dividend is paid is readily tradable on an established securities market in the United States. A qualified foreign corporation does not include a foreign corporation that for the taxable year of the corporation in which the dividend was paid, or the preceding taxable year, is a “passive foreign investment company,” as

defined below. The Fund generally can pass the tax treatment of qualified dividend income it receives through to Fund shareholders. For the Fund to receive qualified dividend income, the Fund must meet certain holding period and other requirements with respect to the stock on which the otherwise qualified dividend is paid. In addition, the Fund cannot be obligated to make payments (pursuant to a short sale or otherwise) with respect to substantially similar or related property. Similar provisions, including the holding period requirements, apply to each shareholder’s investment in the Fund for the dividends received by the shareholder to be eligible for such treatment. The provisions of the Code applicable to qualified dividend income and the 15% maximum individual tax rate on long-term capital gains are currently effective through 2010. Thereafter, qualified dividend income will no longer be taxed at the rates applicable to long-term capital gains, but rather will be taxed for U.S. federal income tax purposes at ordinary income tax rates, which can reach a current maximum rate of 35%, unless Congress enacts legislation providing otherwise.

     Certain distributions by the Fund may qualify for the dividends received deduction available to corporate shareholders, subject to certain holding period and other requirements, but generally only to the extent the Fund earned dividend income from stock investments in U.S. domestic corporations (other than REITs).

     Distributions of net capital gain, if any, are taxable as long-term capital gains for U.S. federal income tax purposes without regard to the length of time the shareholder has held shares of the Fund. The U.S. federal income tax status of all distributions will be designated by the Fund and reported to the shareholders annually. Any dividend declared by the Fund as of a record date in October, November or December and paid during the following January will be treated for U.S. federal income tax purposes as received by shareholders on December 31 of the calendar year in which it is declared.

     If the Fund retains any net capital gain, the Fund may designate the retained amount as undistributed capital gains in a notice to shareholders who, if subject to U.S. federal income tax on long-term capital gains (i) will be required to include in income, as long-term capital gain, their proportionate share of such undistributed amount, and (ii) will be entitled to credit their proportionate share of the federal income tax paid by the Fund on the undistributed amount against their U.S. federal income tax liabilities, if any, and to claim refunds to the extent the credit exceeds such liabilities. For U.S. federal income tax purposes, the tax basis of shares owned by a shareholder of the Fund will be increased by the difference between the amount of undistributed net capital gain included in the shareholder’s gross income and the federal income tax deemed paid by the shareholders.

     Foreign exchange gains and losses realized by the Fund in connection with certain transactions involving foreign currency-denominated debt securities, certain options and futures contracts relating to foreign currency, foreign currency forward contracts, foreign currencies, or payables or receivables denominated in a foreign currency are subject to Section 988 of the Code, which generally causes such gains and losses to be treated as ordinary income and losses and may affect the amount, timing and character of distributions to shareholders.

     If the Fund acquires any equity interest (generally including not only stock but also an option to acquire stock such as is inherent in a convertible bond) in certain foreign corporations that receive at least 75% of their annual gross income from passive sources (such as interest, dividends, certain rents and royalties, or capital gains) or that hold at least 50% of their assets in investments held for the production of such passive income (“passive foreign investment companies”), the Fund could be subject to U.S. federal income tax and additional interest charges on “excess distributions” received from such companies or on gain from the sale of equity interests in such companies, even if all income or gain actually received by the Fund is timely distributed to its shareholders. These investments could also result in the treatment of associated capital gains as ordinary income. The Fund would not be able to pass through to its shareholders any credit or deduction for such tax. Tax elections may generally be available that would ameliorate these adverse tax consequences, but any such election could require the Fund to recognize taxable income or gain (which would be subject to the distribution requirements described above) without the concurrent receipt of cash. The Fund may limit and/or manage its holdings in passive foreign investment companies to limit its U.S. federal income tax liability or maximize its return from these investments.

     The Fund may invest in debt obligations that are in the lowest rating categories or are unrated, including debt obligations of issuers not currently paying interest or who are in default. Investments in debt obligations that are at risk of or in default present special tax issues for the Fund. The U.S. federal income tax laws are not entirely clear about issues such as when the Fund may cease to accrue interest, original issue discount or market discount, when and to what extent deductions may be taken for bad debts or worthless securities and how payments received on obligations in default should be allocated between principal and income. These and other related issues will be addressed by the Fund when, as and if it invests in such securities, in order to seek to ensure that it distributes sufficient income to preserve its status as a regulated investment company and does not become subject to U.S. federal income or excise taxes.

     If the Fund utilizes leverage through Borrowings, or otherwise, asset coverage limitations imposed by the 1940 Act as well as additional restrictions that may be imposed by certain lenders on the payment of dividends or distributions potentially could limit or eliminate the Fund’s ability to make distributions on its common shares and/or Preferred Shares until the asset coverage is restored. These limitations could prevent the Fund from distributing at least 90% of its investment company taxable income as is required under the Code and therefore might jeopardize the Fund’s qualification as a regulated investment company and/or might subject the Fund to a nondeductible 4% federal excise tax. Upon any failure to meet the asset coverage requirements imposed by the 1940 Act, the Fund may, in its sole discretion and to the extent permitted under the 1940 Act, purchase or redeem Preferred Shares in order to maintain or restore the requisite asset coverage and avoid the adverse consequences to the Fund and its shareholders of failing to meet the distribution requirements. There can be no assurance, however, that any such action would achieve these objectives. The Fund will endeavor to avoid restrictions on its ability to distribute dividends.

     If the Fund invests in certain pay-in-kind securities, zero coupon securities, deferred interest securities or, in general, any other securities with original issue discount (or with market discount if the Fund elects to include market discount in income currently), the Fund must accrue income on such investments for each taxable year, which generally will be prior to the receipt of the corresponding cash payments. However, the Fund must distribute, at least annually, all or substantially all of its investment company taxable income (determined without regard to the deduction for dividends paid), including such accrued income, to shareholders to avoid U.S. federal income and excise taxes. Therefore, the Fund may have to dispose of its portfolio securities under disadvantageous circumstances to generate cash, or may have to leverage itself by borrowing the cash, to satisfy distribution requirements.

     The Fund may acquire market discount bonds. A market discount bond is a security acquired in the secondary market at a price below its redemption value (or its adjusted issue price if it is also an original issue discount bond). If the Fund invests in a market discount bond, it will be required to treat any gain recognized on the disposition of such market discount bond as ordinary income (instead of capital gain) to the extent of the accrued market discount unless the Fund elects to include the market discount in income as it accrues, as discussed above.

     The Fund’s income will consist of investment company taxable income and may also consist of net capital gain. The character of the Fund’s income will not affect the amount of dividends to which the holders of the Preferred Shares are entitled. Holders of the Preferred Shares are entitled to receive only the amount of dividends as determined by periodic auctions. For U.S. federal income tax purposes, however, the IRS requires that a regulated investment company that has two or more classes of shares allocate to each such class proportionate amounts of each type of its income (such as ordinary income and net capital gain) for each tax year. Thus, each year the Fund will designate dividends qualifying for the corporate dividends received deduction, qualified dividend income, ordinary income and net capital gains in a manner that allocates such income between the Preferred Shares and common shares in proportion to the total dividends made to each class with respect to such taxable year, or otherwise as required by applicable law.

Each holder of the Preferred Shares during the year will be notified of the allocation within 60 days after the end of the year.

     Although the Fund is required to distribute annually at least 90% of its investment company taxable income, the Fund is not required to distribute net capital gains to the shareholders. The Fund may retain and reinvest such gains and pay U.S. federal income taxes on such gains (the “net undistributed capital gain”). However, it is unclear whether a portion of the net undistributed capital gain would have to be allocated to the Preferred Shares for U.S. federal income tax purposes. Until and unless the Fund receives acceptable guidance from the IRS or an opinion of counsel as to the allocation of the net undistributed capital gain between the common shares and the Preferred Shares, the Fund intends to distribute its net capital gain for any year during which it has shares of Preferred Shares outstanding. Such distribution will affect the tax character but not the amount of dividends to which holders of Preferred Shares are entitled.

     Although dividends generally will be treated as distributed when paid, dividends declared in October, November or December with a record date in such months, and paid in January of the following year, will be treated as having been distributed by the Fund and received by the shareholders on December 31 of the year in which the dividend was declared. In addition, solely for the purpose of satisfying the 90% distribution requirement and the distribution requirement for avoiding income taxes, certain distributions made after the close of a taxable year of the Fund may be “spilled back” and treated as paid during such taxable year. In such case, shareholders will be treated as having received such dividends in the taxable year in which the distribution was actually made. The IRS has ruled privately that dividends paid following the close of the taxable year that are treated for tax purposes as derived from income from the prior year will be treated as dividends “paid” in the prior year for purposes of determining the proportionate share of a particular type of income for each class. Accordingly, the Fund intends to treat any such dividends that are paid following the close of a taxable year as “paid” in the prior year for purposes of determining a class’ proportionate share of a particular type of income. However, the private ruling is not binding on the IRS, and there can be no assurance that the IRS will respect such treatment.

      A holder’s sale of Preferred Shares will generally be a taxable transaction for U.S. federal income tax purposes. Selling holders of such shares will generally recognize gain or loss in an amount equal to the difference between the amount received for such shares and their adjusted tax basis in the Preferred Shares sold. If such Preferred Shares are held as capital asset at the time of sale, the gain or loss will generally be a capital gain or loss. Similarly, a redemption (including a redemption by the Fund resulting from liquidation of the Fund), if any, of all the Preferred Shares actually and constructively held by a shareholder generally will give rise to capital gain or loss under section 302(b) of the Code if the shareholder does not own (and is not regarded under certain federal income tax law rules of constructive ownership as owning) any common shares in the Fund and provided that the redemption proceeds do not represent declared but unpaid dividends. Other redemptions may also give rise to capital gain or loss, if several conditions imposed by section 302(b) of the Code are satisfied. Any loss realized by a shareholder upon the sale or other disposition of shares with a tax holding period of six months or less will be treated as a long-term capital loss to the extent of any amounts treated as distributions of long-term capital gain with respect to such shares. Losses on sales or other dispositions of shares may be disallowed under “wash sale” rules in the event of other investments in the Fund (including those made pursuant to reinvestment of dividends) or other substantially identical stock or securities within a period of 61 days beginning 30 days before and ending 30 days after a sale or other disposition of shares. In such a case, the disallowed portion of any loss generally would be included in the U.S. federal income tax basis of the shares acquired. Shareholders should consult their own tax advisors with reference to their individual circumstances to determine whether any particular transaction in the Preferred Shares is properly treated as a sale for U.S. federal income tax purposes and the tax treatment of any gains or losses recognized in such transactions.

     The Fund may engage in various transactions utilizing options, futures contracts, forward contracts, hedge instruments, straddles, swaps and other similar transactions. Such transactions may be subject to special provisions of the Code that, among other things, affect the character of any income realized by the Fund from such investments, accelerate recognition of income to the Fund, defer Fund losses, affect the holding period of the Fund’s securities, affect whether distributions will be eligible for the dividends received deduction or be treated as qualified dividend income and affect the determination of whether capital gain and loss is characterized as long-term or short-term capital gain or loss. These rules could therefore affect the character, amount and timing of distributions to shareholders. These provisions may also require the Fund to mark-to-market certain types of the positions in its portfolio (i.e., treat them as if they were closed out), which may cause the Fund to recognize income without receiving cash with which to make distributions in amounts necessary to satisfy the distribution requirements for avoiding U.S. federal income and excise taxes. The Fund will monitor its transactions and will make the appropriate entries in its books and records when it acquires an option, futures contract, forward contract, hedge instrument or other similar investment, and if the Fund deems it advisable, will make appropriate elections in order to mitigate the effect of these rules, prevent

disqualification of the Fund as a regulated investment company and to minimize the imposition of U.S. federal income and excise taxes.

     The Fund’s transactions in broad based equity index futures contracts, exchange traded options on such indices and certain other futures contracts are generally considered “Section 1256 contracts” for U.S. federal income tax purposes. Any unrealized gains or losses on such Section 1256 contracts are treated as though they were realized at the end of each taxable year. The resulting gain or loss is treated as sixty percent long-term capital gain or loss and forty percent short-term capital gain or loss. Gain or loss recognized on actual sales of Section 1256 contracts is treated in the same manner. As noted above, distributions of net short-term capital gain are taxable to shareholders as ordinary income while distributions of net long-term capital gain are taxable to shareholders as long-term capital gain, regardless of how long the shareholder has held shares of the Fund.

     The Fund’s entry into a short sale transaction, an option or certain other contracts could be treated as the constructive sale of an appreciated financial position, causing the Fund to realize gain, but not loss, on the position.

     The Fund may invest in REITs that hold residual interests in real estate mortgage investment conduits (“REMICs”). Under a notice issued by the IRS, a portion of the Fund’s income from a REIT that is attributable to the REIT’s residual interest in a REMIC (referred to in the Code as an “excess inclusion”) will be subject to U.S. federal income tax in all events. This notice also provides that excess inclusion income of a regulated investment company, such as the Fund, will be allocated to shareholders of the regulated investment company in proportion to the dividends received by such shareholders, with the same consequences as if the shareholders held the related REMIC residual interest directly. In general, excess inclusion income allocated to shareholders (i) cannot be offset by net operating losses (subject to a limited exception for certain thrift institutions), (ii) will constitute unrelated business taxable income to entities (including a qualified pension plan, an individual retirement account, a 401(k) plan, a Keogh plan or other tax-exempt entity) subject to federal income tax on unrelated business income, thereby potentially requiring such an entity that is allocated excess inclusion income, and otherwise might not be required to file a tax return, to file a federal income tax return and pay tax on such income, and (iii) in the case of a foreign shareholder, will not qualify for any reduction in U.S. federal withholding tax. In addition, if at any time during any taxable year a “disqualified organization” (as defined in the Code) is a record holder of a share in a regulated investment company, then the regulated investment company will be subject to a tax equal to that portion of its excess inclusion income for the taxable year that is allocable to the disqualified organization, multiplied by the highest federal income tax rate imposed on corporations. The Fund does not intend to invest in REITs in which a substantial portion of the assets will consist of residual interests in REMICs.

     The Fund may be subject to withholding and other taxes imposed by foreign countries, including taxes on interest, dividends and capital gains with respect to its investments in those countries, which would, if imposed, reduce the yield on or return from those investments. Tax treaties between certain countries and the U.S. may reduce or eliminate such taxes in some cases. If, however, more than 50% of the value of the Fund’s total assets at the close of any taxable year consists of stock or securities in foreign corporations, and the Fund distributes at least 90% of its investment company taxable income and net tax exempt interest, the Fund may file an election with the IRS pursuant to which shareholders of the Fund will be required to (i) include in gross income (in addition to taxable dividends actually received) their pro rata shares of foreign income taxes paid by the Fund even though not actually received, (ii) treat such respective pro rata shares as foreign income taxes paid by them, and (iii) deduct such pro rata shares in computing their U.S. federal taxable income, or, alternatively, use them as foreign tax credits, subject to applicable limitations, against their U.S. federal income tax liability. Tax-exempt shareholders will not ordinarily benefit from this election relating to foreign taxes. Each year, the Fund will notify its shareholders of the amount of (i) each shareholder’s pro rata share of foreign income taxes paid by the Fund, if any, and (ii) the portion of the Fund’s dividends which represents income from each foreign country, if the Fund qualifies to pass along such credit. Shareholders should consult their own tax advisors regarding the potential application of foreign tax credits.

     Under Treasury regulations, if a shareholder recognizes a loss with respect to shares of $2 million or more in a single taxable year (or $4 million or more in any combination of taxable years) for an

individual shareholder, S corporation or trust or $10 million or more in any single taxable year (or $20 million or more in any combination of years), for a shareholder that is a C corporation, such shareholder must file with the IRS a disclosure statement on Form 8886. Shareholders who directly own portfolio securities are in many cases excepted from this reporting requirement, but under current guidance, shareholders of a regulated investment company are not excepted. Future guidance may extend the current exception from this reporting requirement to shareholders of most or all regulated investment companies. The fact that a loss is reportable under these regulations does not affect the legal determination of whether the taxpayer’s treatment of the loss is proper. Shareholders should consult their tax advisors to determine the applicability of these regulations in light of their individual circumstances.

     Federal law requires that the Fund withhold, as “backup withholding,” 28% of reportable payments, including dividends, capital gain distributions and the proceeds of sales or other dispositions of the Preferred Shares paid to shareholders who have not complied with certain IRS requirements. In order to avoid this withholding requirement, shareholders must certify on their Account Applications, or on a separate IRS Form W-9, that the social security number or other taxpayer identification number they provide is their correct number and that they are not currently subject to backup withholding, or that they are exempt from backup withholding. The Fund may nevertheless be required to backup withhold if it receives notice from the IRS or a broker that the number provided is incorrect or backup withholding is applicable as a result of previous underreporting of interest or dividend income.

     The description of certain U.S. federal income tax provisions above relates only to U.S. federal income tax consequences for shareholders who are U.S. persons (i.e., U.S. citizens or residents or U.S. corporations, partnerships, trusts or estates who are subject to U.S. federal income tax on a net income basis). Investors other than U.S. persons, including non-resident alien individuals, may be subject to different U.S. federal income tax treatment. With respect to such persons, the Fund must generally withhold U.S. federal withholding tax at the rate of 30% (or, if the Fund receives certain certifications from such non-U.S. shareholder, such lower rate as prescribed by an applicable tax treaty) on amounts treated as ordinary dividends from the Fund. However, effective for taxable years of the Fund beginning before January 1, 2008, the Fund will generally not be required to withhold tax on any amounts paid to a non-U.S. person with respect to dividends attributable to “qualified short-term gain” (i.e., the excess of net short-term capital gain over net long-term capital loss) designated as such by the Fund and dividends attributable to certain U.S.-source interest income that would not be subject to U.S. federal withholding tax if earned directly by a non-U.S. person, provided such amounts are properly designated by the Fund. SHAREHOLDERS SHOULD CONSULT THEIR OWN TAX ADVISORS ON THESE MATTERS AND ON ANY SPECIFIC QUESTION OF U.S. FEDERAL, STATE, LOCAL, FOREIGN AND OTHER APPLICABLE TAX LAWS, BEFORE MAKING AN INVESTMENT IN THE FUND.

CUSTODIAN, TRANSFER AGENT, DIVIDEND PAYING AGENT AND REGISTRAR

     The Fund’s securities and cash are held under a custodian agreement with The Bank of New York, One Wall Street, New York, New York 10286. The transfer agent, dividend paying agent and registrar for the Fund’s common shares and the Preferred Shares is also The Bank of New York. In addition, The Bank of New York is the auction agent with respect to the Preferred Shares.

EXPERTS

     The financial statements of the Fund as of June 13, 2007 appearing in this Statement of Additional Information have been audited by Deloitte & Touche LLP, independent registered public accounting firm, 111 S. Wacker Drive, Chicago, Illinois 60606, as set forth in their report thereon

appearing elsewhere herein, and is included in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

ADDITIONAL INFORMATION CONCERNING
THE AGREEMENT AND DECLARATION OF TRUST

The Fund’s Agreement and Declaration of Trust provides that the Fund’s Trustees shall have the power to cause each shareholder to pay directly, in advance or arrears, for charges of the Fund’s custodian or transfer, shareholder servicing or similar agent, an amount fixed from time to time by the Trustees, by setting off such charges due from such shareholder from declared but unpaid account of such shareholder by that number of full and /or fractional shares which represents the outstanding amount of such charges due from such shareholder. The Fund has no present intention of relying on this provision of the Agreement and Declaration of Trust and would only do so if consistent with the 1940 Act or the rules and regulations or interpretations of the commission thereunder.

ADDITIONAL INFORMATION

     A Registration Statement on Form N-2, including amendments thereto, relating to the shares offered hereby, has been filed by the Fund with the Commission, Washington, D.C. The prospectus and this Statement of Additional Information do not contain all of the information set forth in the Registration Statement, including any exhibits and schedules thereto. For further information with respect to the Fund and the shares offered hereby, reference is made to the Registration Statement. Statements contained in the prospectus and this Statement of Additional Information as to the contents of any contract or other document referred to are not necessarily complete and in each instance reference is made to the copy of such contract or other document filed as an exhibit to the Registration Statement, each such statement being qualified in all respects by such reference. A copy of the Registration Statement may be inspected without charge at the Commission’s principal office in Washington, D.C., and copies of all or any part thereof may be obtained from the Commission upon the payment of certain fees prescribed by the Commission.

FINANCIAL STATEMENTS

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Trustees and Shareholder of Calamos Global Dynamic Income Fund

We have audited the accompanying statement of assets and liabilities of Calamos Global Dynamic Income Fund (the “Fund”), as of June 13, 2007, and the related statement of operations for the period from April 10, 2007 through June 13, 2007. These financial statements are the responsibility of the Fund’s management. Our responsibility is to express an opinion on these financial statements based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audit included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of Calamos Global Dynamic Income Fund as of June 13, 2007, and the results of its operations for the period from April 10, 2007 through June 13, 2007, in conformity with accounting principles generally accepted in the United States of America.

DELOITTE & TOUCHE LLP
Chicago, Illinois
June 21, 2007

CALAMOS GLOBAL DYNAMIC INCOME FUND
STATEMENT OF ASSETS AND LIABILITIES
JUNE 13, 2007

ASSETS:
Cash		$	131,500
Deferred offering costs			171,357
Total assets			302,857
LIABILITIES:
Accrued offering costs			171,357
Accrued organizational expenses			31,500
			202,857
Net assets (6,992.03 shares of beneficial interest issued and outstanding; unlimited shares authorized)		$	100,000
Net asset value per share		$	14.302

STATEMENT OF OPERATIONS
FOR THE PERIOD FROM APRIL 10, 2007 THROUGH JUNE 13, 2007

Investment income		$	—
Organizational expenses			31,500
Less: reimbursement from investment adviser			(31,500	)
Net expenses			—
Net investment income		$	—

NOTES

1. ORGANIZATION

     Calamos Global Dynamic Income Fund (the “Fund”) is a diversified, closed-end management investment company, organized on April 10, 2007 which has had no operations other than the sale and issuance of 6,992 shares of beneficial interest at an aggregate purchase price of $100,000 to Calamos Advisors LLC (the “Investment Adviser” or “Calamos”). The Fund estimates that it will issue common shares in its initial offering at an aggregate offering price of $500,000,000. The Fund currently anticipates that it will issue preferred shares as soon as practicable after the closing of the initial offering of common shares.

2. ACCOUNTING POLICIES

     The preparation of the financial statements in accordance with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from these estimates.

3. AGREEMENTS

     The Fund has entered into an Investment Advisory Agreement with Calamos, which provides for payment of a monthly fee computed at the annual rate of 1.00% of the Fund’s average weekly managed assets. “Managed assets” means the total assets of the Fund (including any assets attributable to leverage) minus accrued liabilities (other than liabilities representing leverage). For purposes of calculating managed assets, the liquidation preference of any preferred shares outstanding is not considered a liability.

     The Fund and other closed end and open end funds advised by Calamos that are part of these arrangements (the Fund and such other funds are collectively referred to as the “Calamos Funds”) have entered into a Fund Accounting Servicing Agreement with State Street Bank & Trust Co. (“State Street”). The Calamos Funds will pay State Street a monthly fee at the annual rate of 0.0090% for the first $5 billion of combined assets; 0.0075% on the next $5 billion of combined assets; 0.0050% on the next $5 billion of combined assets and 0.0035% for the combined assets that exceed $15 billion (for purposes of this calculation “combined assets” means the total of the average daily net assets of Calamos Investment Trust and Calamos Advisors Trust and the average weekly managed assets of Calamos Convertible and High Income Fund, Calamos Convertible Opportunities and Income Fund, Calamos Strategic Total Return Fund, Calamos Global Total Return Fund and Calamos Global Dynamic Income Fund). Each fund of the Calamos Funds will pay its pro-rata share of the fees.

     The Calamos Funds have also entered into a Financial Accounting Servicing Agreement with Calamos. The Calamos Funds will pay Calamos a monthly fee at the annual rate of 0.0175% on the first $1 billion of combined assets; 0.0150% on the next $1 billion of combined assets; and 0.0110% on combined assets that exceed $2 billion. Each fund of the Calamos Funds will pay its pro-rata share of the fees.

4. ORGANIZATIONAL AND OFFERING EXPENSES

     A portion of the net proceeds of the proposed public offering will be used to pay for the offering costs and organizational expenses. Offering costs incurred through June 13, 2007 have been reported on the Statement of Assets and Liabilities as deferred offering costs. These offering costs, as well as offering costs incurred subsequent to June 13, 2007, will be charged to paid-in-capital upon sale of the shares to the public. Organizational expenses have been treated as an expense as incurred and are currently estimated to be $31,500.

     Organization costs recorded in the accompanying financial statements as well as offering costs which have been incurred and are deferred pending the receipt of proceeds from the proposed offering reflect management’s best estimate and are subject to change upon the completion of the offering and conclusion of the organization process. The Investment Adviser has also committed to bear all organizational and offering costs incurred by the Fund which exceed $0.03 per common share.

5. FEDERAL INCOME TAXES

     The Fund intends to qualify as a “regulated investment company” and as such (and by complying with the applicable provisions of the Internal Revenue Code of 1986, as amended) will not be subject to Federal income tax on taxable income (including realized capital gains) that is distributed to shareholders.

STATEMENT OF ASSETS AND LIABILITIES

July 31, 2007 (unaudited)

ASSETS
Investments, at value (cost $766,813,661)		$	743,549,066
Investments in affiliated funds (cost $141,229,857)			141,229,857
Cash (interest bearing)			29,368,119
Due from adviser			58,806
Restricted cash for short positions (interest bearing)			24,200,513
Foreign currency (cost $4,780,381)			4,777,935
Receivable for investments sold			2,529,413
Accrued interest and dividends receivable			4,342,614
Unrealized appreciation on swaps			831,489
Other assets			7,354
Total assets			950,895,166
LIABILITIES
Common stocks sold short, at value (proceeds $28,473,929)			26,449,889
Options written, at value (premium $13,306,666)			6,612,500
Unrealized depreciation on swaps			6,564,560
Payables:
Investments purchased			82,006,405
Offering and organizational fees			754,077
Affiliates:
Investment advisory fees			695,933
Financial accounting fees			7,881
Deferred compensation to Trustees			7,354
Trustee fees and officer compensation			4,851
Accounts payable and accrued liabilities			54,619
Total liabilities			123,158,069
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS		$	827,737,097
COMPOSITION OF NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
Common stock, no par value, unlimited shares authorized 59,006,992 shares issued and outstanding		$	844,535,500
Undistributed net investment income (loss)			1,997,442
Accumulated net realized gain (loss) on investments, short positions, written options, foreign currency transactions and swaps			1,445,902
Net unrealized appreciation (depreciation) on investments, written options, foreign currency translations and swaps			(20,241,747	)
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS		$	827,737,097
Net asset value per common share based on 59,006,992 shares issued and outstanding		$	14.03

See accompanying Notes to Financial Statements.

STATEMENT OF OPERATIONS

Period ended July 31, 2007 (unaudited)*

INVESTMENT INCOME
Interest		$	521,682
Dividends			450,268
Dividends from affiliates			1,768,710
Total investment income			2,740,660
EXPENSES
Investment advisory fees			739,869
Financial accounting fees			8,378
Organization fees			31,500
Audit and legal fees			13,662
Printing and mailing fees			13,266
Registration fees			10,032
Custodian fees			5,379
Trustees’ fees and officer compensation			5,115
Accounting fees			3,815
Transfer agent fees			3,003
Other			7,920
Total expenses			841,939
Less expense reimbursed			(31,500	)
Less affiliated fund investment expenses			(67,221	)
Net expenses			743,218
NET INVESTMENT INCOME(LOSS)			1,997,442
REALIZED AND UNREALIZED GAIN(LOSS) FROM INVESTMENTS, SHORT POSITIONS, WRITTEN OPTIONS, FOREIGN CURRENCY AND SWAPS
Net realized gain (loss) from:
Short positions			36,052
Written options			1,619,700
Foreign currency transactions			(277,966	)
Swaps			68,116
Change in net unrealized appreciation/depreciation on:
Investments			(23,264,595	)
Short positions			2,024,040
Written options			6,694,166
Foreign currency translations			37,713
Swaps			(5,733,071	)
NET REALIZED AND UNREALIZED GAIN (LOSS) FROM INVESTMENTS, SHORT POSITIONS, WRITTEN OPTIONS, FOREIGN CURRENCY AND SWAPS			(18,795,845	)
NET INCREASE (DECREASE) IN NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS RESULTING FROM OPERATIONS		$	(16,798,403	)

See accompanying Notes to Financial Statements.

STATEMENT OF CHANGES IN NET ASSETS

		For the Period
		Ended July 31, 2007
		(unaudited)*
OPERATIONS
Net investment income (loss)		$	1,997,442
Net realized gain (loss) from investments, written options, short positions, foreign currency transactions and swaps			1,445,902
Change in net unrealized appreciation/depreciation on investments, short positions, written options, foreign currency translations and swaps			(20,241,747	)
Net increase (decrease) in net assets applicable to common shareholders resulting from operations			(16,798,403	)
CAPITAL STOCK TRANSACTIONS
Proceeds from initial offering			845,275,000
Offering costs on common shares			(739,500	)
Net increase (decrease) in net assets from capital stock transactions			844,535,500
TOTAL INCREASE (DECREASE) IN NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS			827,737,097
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
Beginning of period			—
End of period		$	827,737,097
Undistributed net investment income (loss)		$	1,997,442