UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-6567 Van Kampen Municipal Opportunity Trust -------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) 1221 Avenue of the Americas, New York, New York 10020 -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Ronald Robison 1221 Avenue of the Americas, New York, New York 10020 -------------------------------------------------------------------------------- (Name and address of agent for service) Registrant's telephone number, including area code: 212-762-4000 Date of fiscal year end: 10/31 Date of reporting period: 7/31/06 Item 1. Schedule of Investments. The Trust's schedule of investments as of the close of the reporting period prepared pursuant to Rule 12-12 of Regulation S-X is as follows: VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST PORTFOLIO OF INVESTMENTS JULY 31, 2006 (UNAUDITED) PAR AMOUNT (000) DESCRIPTION COUPON MATURITY VALUE MUNICIPAL BONDS 160.8% ALABAMA 3.4% $ 1,000 Alabama Bldg Renovation Fin Auth Rev Rfdg (AMBAC Insd) 5.625% 09/01/24 $ 1,065,570 4,000 Birmingham Baptist Med Ctr AL Spl Care Fac Fin Auth Rev Baptist Hlth Sys Inc Ser A 5.000 11/15/30 3,980,200 1,550 Birmingham, AL Arpt Auth Arpt Rev Rfdg (AMT) (AMBAC Insd) (a) 5.500 07/01/14 1,614,325 4,250 Jefferson Cnty, AL Ltd Oblig Sch Wt Ser A 5.250 01/01/23 4,447,582 1,000 Jefferson Cnty, AL Ltd Oblig Sch Wt Ser A 5.000 01/01/24 1,024,540 2,335 Marshall Cnty, AL Hlthcare Ser C 6.000 01/01/32 2,478,906 5 Mobile, AL Indl Dev Brd Solid Waste Disp Rev Mobile Energy Svc Co Proj Rfdg 6.950 01/01/20 471 2,000 Montgomery Cnty, AL Pub Bldg Auth Rev Wts Fac Proj (MBIA Insd) (b) 5.000 03/01/31 2,062,140 2,000 Montgomery, AL Wt (AMBAC Insd) 5.250 05/01/20 2,143,620 --------------- 18,817,354 --------------- ALASKA 0.2% 1,000 Alaska St Hsg Fin Corp Gen Hsg Ser A (FGIC Insd) 5.250 12/01/41 1,037,150 --------------- ARIZONA 4.5% 1,425 Arizona Cap Fac Fin Corp Student Hsg Rev AZ St Univ Proj 6.250 09/01/32 1,502,121 2,900 Arizona Tourism & Sports Auth Multi Purp Stad Fac Ser A (MBIA Insd) 5.375 07/01/22 3,102,594 1,500 Maricopa Cnty, AZ Stad Dist Rfdg (AMBAC Insd) 5.375 06/01/19 1,603,455 2,875 Phoenix, AZ Civic Impt Corp Arpt Rev Jr Lien (AMT) (FGIC Insd) 5.375 07/01/29 2,905,590 610 Pima Cnty, AZ Indl Dev Auth Indl Rev Lease Oblig Irvington Proj Tucson Ser A Rfdg (FSA Insd) 7.250 07/15/10 612,281 14,840 University Med Ctr Corp AZ Hosp Rev 5.000 07/01/35 14,868,938 --------------- 24,594,979 --------------- ARKANSAS 1.0% 1,690 University AR Univ Rev Fac UAMS Campus (FGIC Insd) 5.000 03/01/24 1,767,858 1,370 University AR Univ Rev Fac UAMS Campus (FGIC Insd) 5.000 03/01/25 1,430,938 2,350 University AR Univ Rev Fac UAMS Campus (FGIC Insd) 5.000 03/01/27 2,445,198 --------------- 5,643,994 --------------- CALIFORNIA 20.4% 2,630 Anaheim, CA Pub Fin Auth Lease Rev Cap Apprec Sub Pub Impt Proj Ser C (FSA Insd) * 09/01/20 1,372,807 2,400 Bay Area Govt Assn CA Rev Tax Alloc CA Redev Pool Ser A (XLCA Insd) 5.250 09/01/29 2,524,896 1,050 California Cnty, CA Tob Securitization Agy Asset Bkd Merced Cnty Ser A Rfdg 5.125 06/01/38 1,046,650 2,000 California Cnty, CA Tob Securitization Agy Asset Bkd Sonoma Cnty Corp Rfdg 5.125 06/01/38 1,993,620 1,750 California Cnty, CA Tob Securitization Agy Asset Bkd Sonoma Cnty Corp Rfdg 5.250 06/01/45 1,750,472 15,000 California Hlth Fac Fin Auth Rev Cedars Sinai Med Ctr Rfdg 5.000 11/15/34 15,166,650 1,800 California Hlth Fac Fin Auth Rev Kaiser Permanente Ser A 5.000 04/01/37 1,820,250 2,000 California Pollutn Ctl Fin Auth Solid Waste Disp Rev Waste Mngmt Inc Proj Ser B (AMT) 5.000 07/01/27 2,013,300 20 California Rural Home Mtg Fin Auth Single Family Mtg Rev Ser C (AMT) (GNMA Collateralized) 7.800 02/01/28 20,384 5,770 California St 5.000 02/01/33 5,872,879 2,000 California St Dept Wtr Res Pwr Ser A (Prerefunded @ 05/01/12) 5.750 05/01/17 2,223,940 3,500 California St Pub Wks Brd Lease Rev Dept Corrections Ser C 5.250 06/01/28 3,636,710 2,000 California St Pub Wks Brd Lease Rev Dept Mental Hlth Coalinga Ser A 5.000 06/01/25 2,050,020 4,405 California St Tcrs Bny (AMBAC Insd) 5.125 10/01/27 4,487,373 7,750 California Statewide Cmntys Dev Auth Rev Daughters of Charity Hlth Ser A 5.250 07/01/30 7,969,092 7,000 California Statewide Cmntys Dev Auth Rev Daughters of Charity Hlth Ser A 5.000 07/01/39 7,009,660 5,000 California Statewide Cmntys Dev Auth Rev Hlth Fac Adventist Hlth Ser A 5.000 03/01/30 5,060,700 3,000 California Statewide Cmntys Dev Auth Rev Hlth Fac Adventist Hlth Ser A 5.000 03/01/35 3,030,960 3,600 California Statewide Cmntys Dev Auth Rev Kaiser Permanente Ser B 5.000 03/01/41 3,619,440 5,200 California Statewide Cmntys Dev Auth Rev Kaiser Permanente Ser B 5.250 03/01/45 5,347,680 5,000 Foothill/Eastern Corridor Agy CA Toll Rd Rev Cap Apprec Rfdg * 01/15/25 1,741,200 4,000 Foothill/Eastern Corridor Agy CA Toll Rd Rev Conv Cap Apprec Sr Lien Ser A (Escrowed to Maturity) 7.050 01/01/10 4,425,520 1,500 Los Angeles Cnty, CA Metro Tran Auth Sales Tax Rev Prop C Second Tier Sr Ser A Rfdg (AMBAC Insd) 5.000 07/01/23 1,537,125 3,000 Los Angeles, CA Uni Sch Dist Ser A (FSA Insd) 5.250 07/01/19 3,216,120 2,400 Tob Securitization Auth Northn CA Tob Settlement Rev Asset Bkd Ser A-1 5.375 06/01/38 2,436,912 1,600 Tob Securitization Auth Northn CA Tob Settlement Rev Asset Bkd Ser A-1 5.500 06/01/45 1,629,552 6,000 Tob Securitization Auth Southn CA Tob Settlement Ser A-1 5.000 06/01/37 5,874,900 12,000 Tob Securitization Auth Southn CA Tob Settlement Ser A-1 5.125 06/01/46 11,779,200 1,600 Turlock, CA Hlth Fac Rev Ctf Partn Emanuel Med Ctr Inc 5.375 10/15/34 1,644,848 --------------- 112,302,860 --------------- COLORADO 3.2% 3,000 Colorado Hlth Fac Auth Rev Catholic Hlth Initiatives Ser A (Escrowed to Maturity) 5.500 03/01/32 3,211,920 2,500 Colorado Hlth Fac Auth Rev Covenant Retirement Cmnty Inc 5.000 12/01/35 2,478,925 3,700 Colorado Hlth Fac Auth Rev Evangelical Lutheran 5.000 06/01/35 3,709,731 1,000 Colorado Hlth Fac Auth Rev Hosp Portercare Adventist Hlth (Prerefunded @ 11/15/11) 6.500 11/15/31 1,131,250 1,000 Colorado Hsg Fin Auth Multi-Family Hsg Ins Mtg Ser B2 (AMT) (FHA Gtd) 5.800 10/01/28 1,019,690 81 Colorado Hsg Fin Auth Single Family Pgm Sr Ser A2 (AMT) 7.250 05/01/27 82,602 35 Colorado Hsg Fin Auth Single Family Pgm Sr Ser C1 (AMT) 7.550 11/01/27 35,747 1,000 Denver, CO City & Cnty Arpt Rev Ser B (AMT) (MBIA Insd) 6.250 11/15/07 1,026,060 1,005 Greeley, CO Multi-Family Rev Hsg Mtg Creek Stone (AMT) (FHA Gtd) 5.950 07/01/28 1,028,346 530 Highlands Ranch Metro Dist No 2 CO (FSA Insd) (Escrowed to Maturity) 6.500 06/15/11 593,197 470 Highlands Ranch Metro Dist No 2 CO (FSA Insd) 6.500 06/15/11 525,201 1,500 Park Creek Metro Dist CO Rev Sr Ltd Tax Ppty Rfdg 5.500 12/01/37 1,540,770 1,500 University Co Hosp Auth Rev Ser A 5.250 11/15/39 1,532,010 --------------- 17,915,449 --------------- CONNECTICUT 1.9% 6,500 Connecticut St Spl Oblig Pkg Rev Bradley Intl Arpt Ser A (AMT) (ACA Insd) 6.600 07/01/24 7,067,060 1,000 Hartford, CT Pkg Sys Rev Ser A (Prerefunded @ 07/01/10) 6.400 07/01/20 1,091,050 1,000 Mashantucket Western Pequot Tribe CT Spl Rev Ser A, 144A - Private Placement (c) 5.500 09/01/36 1,033,570 1,000 Mashantucket Western Pequot Tribe CT Spl Rev Ser A, 144A - Private Placement (Prerefunded @ 09/01/06) (c) 6.400 09/01/11 1,021,450 --------------- 10,213,130 --------------- DISTRICT OF COLUMBIA 2.1% 2,500 District Columbia Rev Gonzaga College (FSA Insd) 5.250 07/01/32 2,613,575 8,850 Metropolitan Washington DC Arpt Auth Sys Ser A (AMT) (FGIC Insd) 5.250 10/01/32 9,109,747 --------------- 11,723,322 --------------- FLORIDA 2.3% 460 Escambia Cnty, FL Hlth Fac Auth Rev FL Hlthcare Fac Ln VHA Pgm (AMBAC Insd) 5.950 07/01/20 481,109 1,000 Highlands Cnty, FL Hlth Fac Auth Rev Hosp Adventist Hlth Sys Ser D 5.000 11/15/35 1,010,740 2,500 Highlands Cnty, FL Hlth Fac Auth Rev Hosp Adventist Hlth Sys Ser C 5.250 11/15/36 2,587,450 1,000 Lakeland, FL Hosp Sys Rev Lakeland Regl Hlth Sys 5.500 11/15/32 1,044,110 2,500 Miami-Dade Cnty, FL Aviation Miami Intl Arpt (AMT) (FGIC Insd) 5.375 10/01/32 2,599,700 2,100 Miami-Dade Cnty, FL Aviation Miami Intl Arpt Ser A (AMT) (FGIC Insd) 5.375 10/01/27 2,190,279 215 North Broward, FL Hosp Dist Rev Impt 6.000 01/15/31 227,550 2,160 North Broward, FL Hosp Dist Rev Impt (Prerefunded @ 01/15/11) 6.000 01/15/31 2,368,051 --------------- 12,508,989 --------------- GEORGIA 3.4% 1,000 Atlanta, GA Arpt Rev Ser B (AMT) (FGIC Insd) 5.625 01/01/30 1,041,650 1,383 Fulton Cnty, GA Lease Rev (Acquired 12/23/1994, Cost $1,382,772) (d) 7.250 06/15/10 1,426,427 7,000 Georgia Muni Elec Auth Pwr Rev Ser A (MBIA Insd) 6.500 01/01/20 8,529,220 3,770 Monroe Cnty, GA Dev Auth Pollutn Ctl Rev Oglethorpe Pwr Corp Scherer Ser A 6.800 01/01/12 4,242,833 2,500 Municipal Elec Auth GA Combustion Turbine Proj Ser A (MBIA Insd) 5.250 11/01/21 2,644,225 1,000 Oconee Cnty, GA Indl Dev Auth Rev Oiit Proj (XLCA Insd) 5.250 07/01/25 1,047,440 --------------- 18,931,795 --------------- ILLINOIS 11.5% 3,750 Bolingbrook, IL Cap Apprec Ser B (MBIA Insd) * 01/01/30 1,055,887 3,150 Chicago, IL O'Hare Intl Arpt Rev Gen Arpt Third Lien Ser A Rfdg (AMT) (MBIA Insd) 5.375 01/01/32 3,271,716 13,450 Chicago, IL O'Hare Intl Arpt Rev Rols RR II R 494-1 (Inverse Fltg) (MBIA Insd) (Acquired 12/16/2005 and 02/17/2006, Cost $15,414,022) (d) 5.225 01/01/24 15,125,735 615 Chicago, IL Pk Dist Ser C (FGIC Insd) 5.500 01/01/19 654,797 1,885 Chicago, IL Pk Dist Ser C (Prerefunded @ 07/01/11) (FGIC Insd) 5.500 01/01/19 2,028,731 15 Chicago, IL Single Family Mtg Rev Ser A (AMT) (GNMA Collateralized) 7.000 09/01/27 15,375 10 Chicago, IL Single Family Mtg Rev Ser B (AMT) (GNMA Collateralized) 7.625 09/01/27 10,029 4,500 Cook Cnty, IL Cap Impt Ser A (FGIC Insd) 5.000 11/15/23 4,641,975 6,000 Illinois Fin Auth Rev Northwestern Mem Hosp Ser A 5.500 08/15/43 6,339,540 3,630 Kendall, Kane & Will Cntys, IL Cmnty Unit Sch Dist No 308 Ser B (FGIC Insd) (a) 5.250 10/01/20 3,860,324 1,925 Kendall, Kane & Will Cntys, IL Cmnty Unit Sch Dist No 308 Ser B (FGIC Insd) 5.250 10/01/21 2,037,978 1,250 Metropolitan Pier & Expo Auth IL Dedicated St Tax Rev McCormick Pl Expn Proj (FGIC Insd) 5.375 12/15/18 1,316,050 2,000 Metropolitan Pier & Expo Auth IL Dedicated St Tax Rev McCormick Pl Expn Proj (FGIC Insd) 5.500 12/15/24 2,109,220 6,000 Metropolitan Pier & Expo Auth IL Dedicated St Tax Rev McCormick Pl Expn Ser A (MBIA Insd) 5.250 06/15/42 6,276,480 3,000 Pekin, IL Mtg Rev United Auto Workers Inc Proj Ser A (GNMA Collateralized) 5.250 05/20/34 3,021,480 5,000 Regional Tran Auth IL Ser B (AMBAC Insd) 8.000 06/01/17 6,571,450 5,000 University IL Univ Rev Auxiliary Sys Fac Ser A Rfdg (AMBAC Insd) 5.000 04/01/30 5,081,800 --------------- 63,418,567 --------------- INDIANA 3.2% 1,000 Allen Cnty, IN Juvenile Justice Ctr First Mtg (AMBAC Insd) 5.500 01/01/18 1,074,120 3,270 Allen Cnty, IN War Mem Coliseum Ser A (AMBAC Insd) (a) 5.500 11/01/16 3,539,971 8,240 Indiana Hlth Fac Fin Auth Hosp Rev Cmnty Proj Ser A (AMBAC Insd) 5.000 05/01/35 8,459,678 2,000 Indiana Hlth Fac Fin Auth Hosp Rev Columbus Regl Hosp Rfdg (FSA Insd) 7.000 08/15/15 2,303,240 2,500 Indiana St Dev Fin Auth Rev Exempt Fac Conv Rfdg (AMT) 5.950 08/01/30 2,547,925 --------------- 17,924,934 --------------- IOWA 1.3% 1,890 Des Moines, IA Pub Pkg Sys Rev Ser A (FGIC Insd) (a) 5.750 06/01/17 2,011,678 2,500 Tob Settlement Auth IA Rev Asset Bkd Ser C 5.500 06/01/42 2,547,950 2,500 Tob Settlement Auth IA Rev Asset Bkd Ser C 5.625 06/01/46 2,573,400 --------------- 7,133,028 --------------- KENTUCKY 1.5% 1,475 Kenton Cnty, KY Arpt Brd Rev Cincinnati/Northn KY Intl Arpt Ser A Rfdg (AMT) (MBIA Insd) 6.200 03/01/08 1,525,445 1,995 Kentucky Hsg Corp Hsg Rev Ser F (AMT) (FNMA Collateralized) 5.450 01/01/32 2,034,401 4,500 Louisville & Jefferson Cnty, KY Metro Govt Indl Bldg Rev Sisters of Mercy Cincinnati 5.000 10/01/35 4,530,375 --------------- 8,090,221 --------------- LOUISIANA 1.9% 5,000 Lafayette, LA Utils Rev (MBIA Insd) 5.250 11/01/23 5,314,150 130 Louisiana Hsg Fin Agy Mtg Rev Single Family Access Pgm Ser B (AMT) (GNMA Collateralized) 8.000 03/01/25 130,637 1,970 Louisiana Hsg Fin Agy Rev Azalea Estates Ser A Rfdg (AMT) (GNMA Collateralized) 5.375 10/20/39 2,016,374 3,000 Louisiana St Energy & Pwr Auth Pwr Proj Rev Rfdg (FSA Insd) 5.750 01/01/12 3,255,570 --------------- 10,716,731 --------------- MARYLAND 2.8% 1,000 Baltimore, MD Convention Ctr Hotel Rev Drivers Ser 1251 (Inverse Fltg) (XLCA Insd) (Acquired 02/06/06, Cost $1,177,090) (d) 6.530 03/01/14 1,144,670 2,500 Maryland St Econ Dev Corp Student Hsg Rev Univ MD College Pk Proj Rfdg (CIFG Insd) 5.000 06/01/25 2,607,375 1,000 Maryland St Econ Dev Corp Student Hsg Rev Univ MD College Pk Proj Rfdg (CIFG Insd) 5.000 06/01/26 1,041,340 2,050 Maryland St Econ Dev Corp Student Hsg Rev Univ MD College Pk Proj Rfdg (Prerefunded @ 06/01/13) 5.625 06/01/35 2,247,989 2,000 Maryland St Hlth & Higher Ed Fac Auth Rev Medstar Hlth Rfdg 5.375 08/15/24 2,081,060 1,200 Maryland St Hlth & Higher Ed Fac Auth Rev Union Hosp Cecil Cnty Issue 5.000 07/01/40 1,212,600 4,710 Northeast, MD Waste Disp Auth Rfdg (AMT) (AMBAC Insd) 5.500 04/01/16 5,026,700 --------------- 15,361,734 --------------- MASSACHUSETTS 3.7% 3,955 Massachusetts Bay Trans Auth Gen Trans Sys Ser A Rfdg 5.500 03/01/12 4,196,255 4,800 Massachusetts St Dev Fin Agy Rev College Pharmacy & Allied Hlth Ser D (AGL Insd) 5.000 07/01/35 4,905,456 3,000 Massachusetts St Dev Fin Agy Semass Sys Ser A (MBIA Insd) 5.625 01/01/16 3,254,820 1,000 Massachusetts St Hlth & Ed Fac Auth Rev Partn Hlthcare Sys Ser C 5.750 07/01/32 1,074,520 1,000 Massachusetts St Hlth & Ed Fac Auth Rev Saint Mem Med Ctr Ser A 6.000 10/01/23 1,000,760 6,050 Massachusetts St Hlth & Ed Fac Auth Rev Univ of MA Mem Issue Ser D 5.000 07/01/33 6,045,281 --------------- 20,477,092 --------------- MICHIGAN 1.3% 3,505 Detroit, MI Wtr Supply Sys Ser B (MBIA Insd) (a) 5.250 07/01/18 3,792,620 3,000 Kent Hosp Fin Auth MI Rev Metro Hosp Proj Ser A 6.250 07/01/40 3,274,860 --------------- 7,067,480 --------------- MINNESOTA 2.0% 10 Chaska, MN Elec Rev Ser A 6.100 10/01/30 10,779 990 Chaska, MN Elec Rev Ser A (Prerefunded @ 10/01/10) 6.100 10/01/30 1,077,516 1,150 Maple Grove, MN Hlthcare Fac Rev North Mem Hlthcare 5.000 09/01/35 1,165,456 2,200 Saint Paul, MN Hsg & Redev Auth Hosp Rev Hlth East Proj 6.000 11/15/30 2,386,362 2,000 Saint Paul, MN Hsg & Redev Auth Hosp Rev Hlth East Proj 6.000 11/15/35 2,166,460 3,875 Saint Paul, MN Port Auth Lease Rev Office Bldg at Cedar Str (a) 5.250 12/01/19 4,173,646 --------------- 10,980,219 --------------- MISSISSIPPI 0.2% 655 Mississippi Home Corp Single Family Rev Mtg Ser C (AMT) (GNMA Collateralized) 7.600 06/01/29 667,091 265 Mississippi Home Corp Single Family Rev Mtg Ser F (AMT) (GNMA Collateralized) 7.550 12/01/27 275,155 --------------- 942,246 --------------- MISSOURI 1.7% 2,150 Cape Girardeau Cnty, MO Indl Southeast MO Hosp Assoc 5.500 06/01/22 2,210,996 1,345 Kansas City, MO Metro Cmnty Colleges Bldg Corp Rev Leasehold Jr College Impt & Rfdg (FGIC Insd) 5.500 07/01/17 1,435,734 1,375 Missouri St Hlth & Ed Fac Auth Rev Sr Living Fac Lutheran Ser A 5.375 02/01/35 1,408,921 1,210 Saint Louis, MO Arpt Rev Cap Impt Pgm Ser A (MBIA Insd) 5.375 07/01/18 1,287,997 3,000 Sikeston, MO Elec Rev Rfdg (MBIA Insd) 6.200 06/01/10 3,185,310 --------------- 9,528,958 --------------- NEBRASKA 0.9% 5,000 Omaha, NE Pub Pwr Dist Elec Rev Sys Ser A 5.000 02/01/39 5,115,800 --------------- NEVADA 3.9% 15,000 Clark Cnty, NV Arpt Rev Sub Lien Ser A-2 (FGIC Insd) 5.000 07/01/36 15,289,050 6,000 Clark Cnty, NV Indl Dev Rev Southwest Gas Corp Proj Ser A (AMT) (AMBAC Insd) 5.250 07/01/34 6,209,820 --------------- 21,498,870 --------------- NEW HAMPSHIRE 0.6% 1,155 New Hampshire Hlth & Ed Fac Auth Rev Derryfield Sch 7.000 07/01/30 1,253,718 845 New Hampshire Hlth & Ed Fac Univ Sys of NH (AMBAC Insd) 5.500 07/01/15 912,313 1,000 New Hampshire St Bus Fin Auth Wtr Fac Rev Pennichuck Wtrwks Inc (AMT) (AMBAC Insd) 6.300 05/01/22 1,036,860 --------------- 3,202,891 --------------- NEW JERSEY 12.7% 5,000 New Jersey Econ Dev Auth Mtr Veh Rev Ser A (MBIA Insd) 5.000 07/01/22 5,218,950 3,000 New Jersey Econ Dev Auth Rev Mtr Veh Rev Ser A (MBIA Insd) 5.000 07/01/23 3,114,030 2,700 New Jersey Econ Dev Auth Rev Cig Tax 5.750 06/15/29 2,861,973 2,000 New Jersey Econ Dev Auth Rev Cig Tax 5.750 06/15/34 2,106,600 30,000 New Jersey Econ Dev Auth St Contract Econ Recovery (MBIA Insd) 5.900 03/15/21 35,043,600 8,000 New Jersey Econ Dev Auth Wtr Fac Rev NJ Amer Wtr Co Inc Proj Ser A (AMT) (FGIC Insd) 6.875 11/01/34 8,059,760 10,000 New Jersey St Ed Fac Auth Higher Ed Cap Impt Ser A (AMBAC Insd) 5.250 09/01/21 10,596,700 3,110 Newark, NJ Hsg Auth Port Auth Newark Marine Terminal (MBIA Insd) 5.250 01/01/20 3,300,892 --------------- 70,302,505 --------------- NEW MEXICO 0.6% 2,020 University NM Univ Rev Sub Lien Ser A Rfdg (a) 5.250 06/01/20 2,144,169 1,125 University NM Univ Rev Sub Lien Ser A Rfdg 5.250 06/01/21 1,189,665 --------------- 3,333,834 --------------- NEW YORK 15.7% 5,000 Long Island, NY Pwr Auth Elec Sys Rev Gen Ser B 5.000 12/01/35 5,126,600 5,000 Nassau Cnty, NY Tob Settlement Corp Asset Bkd Ser A-3 5.000 06/01/35 4,928,300 1,000 Nassau Cnty, NY Tob Settlement Corp Asset Bkd Ser A-3 5.125 06/01/46 989,030 11,000 New York City Hsg Dev Corp Multi-Family Rent Hsg Rev Progress of Peoples Dev Ser B (AMT) (FNMA Collateralized) 4.950 05/15/36 11,005,720 1,255 New York City Indl Dev Civic YMCA Gtr NY Proj 5.800 08/01/16 1,289,086 6,000 New York City Ser A 7.000 08/01/07 6,104,760 5,000 New York City Trans Fin Auth Rev Future Tax Secd Ser A Rfdg (e) 5.500/ 14.000 11/01/26 5,364,650 2,525 New York St Dorm Auth Lease Rev Muni Hlth Fac Impt Pgm Ser A (FSA Insd) 5.500 05/15/25 2,605,522 1,625 New York St Dorm Auth Lease Rev St Univ Dorm Fac Ser A (Prerefunded @ 07/01/10) 6.000 07/01/14 1,773,818 3,100 New York St Dorm Auth Rev City Univ Sys Cons Ser A 5.625 07/01/16 3,413,131 2,600 New York St Dorm Auth Rev Cons City Univ Sys Second Gen Ser A 5.750 07/01/13 2,811,432 500 New York St Dorm Auth Rev Mental Hlth Ser A 5.750 08/15/12 514,805 2,535 New York St Dorm Auth Rev Mental Hlth Ser B 5.750 08/15/11 2,607,856 5 New York St Dorm Auth Rev Mental Hlth Svcs Fac Ser A (Prerefunded @ 02/15/07) 5.750 08/15/12 5,155 2,040 New York St Dorm Auth Rev Secd Hosp North Gen Hosp Rfdg 5.750 02/15/18 2,220,948 885 New York St Dorm Auth Rev Ser B 7.500 05/15/11 983,385 650 New York St Dorm Auth Rev Ser B (Prerefunded @ 05/15/10) 7.500 05/15/11 723,489 5,000 New York St Dorm Auth Rev St Univ Ed Fac Ser A 5.500 05/15/08 5,144,900 1,500 New York St Dorm Auth Rev Upstate Cmnty Colleges Ser B 5.250 07/01/20 1,591,095 1,000 New York St Dorm Auth Rev Upstate Cmnty Colleges Ser B 5.250 07/01/21 1,059,350 1,065 New York St Mtg Agy Rev Homeowner Mtg Ser 82 (AMT) 5.650 04/01/30 1,068,120 3,780 New York St Mtg Agy Rev Ser 101 (AMT) 5.400 04/01/32 3,858,700 2,160 New York St Twy Auth Svc Contract Rev Loc Hwy & Brdg 5.500 04/01/16 2,334,636 4,000 Port Auth NY & NJ Spl Oblig Rev Spl Proj JFK Intl Arpt Terminal 6 (AMT) (MBIA Insd) 5.750 12/01/22 4,169,640 12,960 TSASC Inc NY Ser 1 5.000 06/01/34 12,820,810 2,150 Westchester, Tob Asset Securitization Corp NY 5.125 06/01/38 2,143,142 --------------- 86,658,080 --------------- NORTH CAROLINA 6.0% 1,500 North Carolina Eastn Muni Pwr Agy Pwr Sys Rev Ser D 6.700 01/01/19 1,628,400 22,000 North Carolina Muni Pwr Agy No 1 Catawba Elec Rev Rfdg (MBIA Insd) 6.000 01/01/12 24,241,140 7,000 North Carolina Muni Pwr Agy Ser A (MBIA Insd) 5.250 01/01/19 7,423,150 --------------- 33,292,690 --------------- NORTH DAKOTA 0.2% 775 North Dakota St Hsg Fin Agy Rev Hsg Fin Pgm Home Mtg Fin Ser B (AMT) (MBIA Insd) 5.500 07/01/29 784,610 380 North Dakota St Hsg Fin Agy Ser C (AMT) 5.550 07/01/29 381,037 --------------- 1,165,647 --------------- OHIO 2.1% 1,000 Cleveland, OH Muni Sch Dist (FSA Insd) 5.250 12/01/24 1,060,160 1,000 Cleveland-Cuyahoga Cnty, OH Port Auth Rev Student Hsg Euclid Ave Fenn Proj (AMBAC Insd) 5.000 08/01/28 1,031,070 1,500 Cuyahoga Cnty, OH Hosp Fac Rev Canton Inc Proj 7.500 01/01/30 1,651,755 2,000 Lorain Cnty, OH Hosp Rev Catholic Hlthcare 5.375 10/01/30 2,081,720 2,450 Lorain Cnty, OH Hosp Rev Catholic Hlthcare Ser A Impt & Rfdg 5.250 10/01/33 2,537,710 3,000 Lucas Cnty, OH Hosp Rev Promedica Hlthcare Oblig Rfdg (MBIA Insd) 6.000 11/15/07 3,078,630 --------------- 11,441,045 --------------- OKLAHOMA 3.3% 3,410 Jenks, OK Aquarium Auth Rev Rfdg (MBIA Insd) (a) 5.250 07/01/24 3,636,629 1,475 Jenks, OK Aquarium Auth Rev Rfdg (MBIA Insd) 5.250 07/01/33 1,564,887 3,970 McAlester, OK Pub Wks Auth Util Cap Apprec (FSA Insd) * 02/01/34 1,049,787 2,250 Oklahoma City, OK Pub Ppty Auth Hotel Tax Rev (FGIC Insd) 5.250 10/01/29 2,383,268 1,065 Oklahoma Dev Fin Auth Lease Rev OK Council Law Enforcement (MBIA Insd) (a) 5.500 06/01/17 1,145,887 1,120 Oklahoma Dev Fin Auth Lease Rev OK Council Law Enforcement (MBIA Insd) (a) 5.500 06/01/18 1,205,064 1,185 Oklahoma Dev Fin Auth Lease Rev OK Council Law Enforcement (MBIA Insd) (a) 5.500 06/01/19 1,275,001 2,250 Tulsa Cnty, OK Pub Fac Auth Cap Impt Rev (Prerefunded @ 11/01/09) (AMBAC Insd) 6.250 11/01/22 2,459,250 3,140 Tulsa, OK Indl Auth Hosp Rev Hillcrest Med Cent Proj Rfdg (Escrowed to Maturity) (Connie Lee Insd) (a) 6.250 06/01/08 3,276,967 --------------- 17,996,740 --------------- OREGON 1.9% 5,000 Oregon Hlth Sciences Univ Insd Ser A (MBIA Insd) 5.250 07/01/22 5,298,200 5,000 Oregon St Dept Admin Ser C Rfdg (MBIA Insd) 5.250 11/01/18 5,292,900 --------------- 10,591,100 --------------- PENNSYLVANIA 4.4% 2,210 Chartiers Vly, PA Sch Dist Ser A (FSA Insd) (a) 5.250 10/15/19 2,371,109 2,750 Hempfield, PA Area Sch Dist Westmoreland Cnty Ser A (FGIC Insd) 5.250 03/15/19 2,948,798 6,515 Hempfield, PA Area Sch Dist Westmoreland Cnty Ser A (FGIC Insd) (a) 5.250 03/15/20 6,981,344 3,090 Philadelphia, PA Gas Wks Rev 1975 Gen Ordinance Seventeenth Ser (FSA Insd) 5.375 07/01/19 3,280,159 3,000 Susquehanna Area Regl Arpt Auth PA Ser A (AMT) (AMBAC Insd) 5.375 01/01/21 3,142,050 5,415 Susquehanna Area Regl Arpt Auth PA Ser A (AMT) (AMBAC Insd) (a) 5.375 01/01/22 5,671,400 --------------- 24,394,860 --------------- SOUTH CAROLINA 4.0% 5,000 Charleston Ed Excellence Fin Corp SC Rev (Inverse Fltg) (Acquired 12/06/2005, Cost $5,468,423) (d) 5.225 12/01/26 5,463,000 5,000 Easley, SC Util Rev Impt & Comb Rfdg (FSA Insd) 5.000 12/01/34 5,144,350 2,000 Laurens Cnty, SC Sch Dist No 55 Installment Pur Rev 5.250 12/01/30 2,052,540 5,000 South Carolina Jobs Econ Dev Auth Indl Rev Elec & Gas Co Proj Ser A (AMBAC Insd) 5.200 11/01/27 5,229,500 3,750 South Carolina Jobs Econ Dev Auth Indl Rev Elec & Gas Co Proj Ser B (AMT) (AMBAC Insd) 5.450 11/01/32 3,922,800 --------------- 21,812,190 --------------- SOUTH DAKOTA 0.7% 1,375 Deadwood, SD Ctfs Partn (ACA Insd) 6.375 11/01/20 1,474,578 2,500 South Dakota St Hlth & Ed Fac Auth Rev Sioux Vly Hosp & Hlth Sys Ser A 5.250 11/01/34 2,571,925 --------------- 4,046,503 --------------- TENNESSEE 1.3% 1,750 Chattanooga, TN Hlth Ed & Hsg Fac Brd Rev CDFI Phase I LLC Proj Ser A Rfdg 5.125 10/01/35 1,719,953 2,000 Elizabethton, TN Hlth & Ed Fac Brd Rev Impt Hosp First Mtg Ser B Rfdg 8.000 07/01/33 2,343,640 1,500 Elizabethton, TN Hlth & Ed Fac Brd Rev Impt Hosp Ser B Rfdg (MBIA Insd) 7.750 07/01/29 1,804,035 1,000 Johnson City, TN Hlth & Ed Fac Brd Hosp Rev First Mtg Mtn St Hlth Ser A Rfdg (MBIA Insd) 7.500 07/01/25 1,212,700 --------------- 7,080,328 --------------- TEXAS 14.8% 2,000 Alliance Arpt Auth Inc TX Spl Fac Rev Fedex Corp Proj Rfdg (AMT) 4.850 04/01/21 1,986,180 2,350 Austin, TX Ctf Oblig (MBIA Insd) (a) 5.375 09/01/20 2,510,435 2,545 Dallas Cnty, TX Cmnty College Fin Sys (AMBAC Insd) (a) 5.375 02/15/17 2,657,056 8,000 Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A (AMT) (FSA Insd) 5.500 11/01/21 8,559,040 4,000 Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A (AMT) (FGIC Insd) 5.750 11/01/30 4,188,080 5,500 Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A Impt & Rfdg (AMT) (FGIC Insd) 5.500 11/01/31 5,768,400 2,000 Harris Cnty, TX Hlth Fac Dev Corp Hosp Rev Mem Hermann Hlthcare Ser A (Prerefunded @ 06/01/11) 6.375 06/01/29 2,236,360 2,000 Houston, TX Arpt Sys Rev Sub Lien (FSA Insd) 5.500 07/01/20 2,143,000 3,000 Houston, TX Arpt Sys Rev Sub Lien Ser A (AMT) (FSA Insd) 5.625 07/01/30 3,151,140 10,000 Houston, TX Arpt Sys Rev Sub Lien Ser A (AMT) (FSA Insd) 5.125 07/01/32 10,159,600 12,000 Houston, TX Util Sys Rev First Lien Ser A Rfdg (FSA Insd) 5.250 05/15/21 12,779,640 2,185 Lower CO Riv Auth TX Transmission Contract Rev LCRA Svc Corp Proj Rfdg (FGIC Insd) 5.000 05/15/24 2,233,332 2,185 Lower CO Riv Auth TX Transmission Contract Rev LCRA Svc Corp Proj Rfdg (FGIC Insd) 5.000 05/15/25 2,245,940 4,000 Lower CO Riv Auth TX Transmission Contract Rev LCRA Svc Corp Proj Rfdg (FGIC Insd) 5.000 05/15/33 4,058,360 1,000 Matagorda Cnty, TX Navig Dist No 1 Rev Coll Centerpoint Energy Proj Rfdg 5.600 03/01/27 1,045,810 3,000 Metropolitan Hlth Fac Dev Corp TX Wilson N Jones Mem Hosp Proj 7.250 01/01/31 3,089,340 10,000 North Cent, TX Hlth Fac Dev Hosp Childrens Med Ctr Dallas (AMBAC Insd) 5.250 08/15/32 10,400,900 2,360 University of TX Univ Rev Fin Sys Ser B 5.250 08/15/20 2,510,946 --------------- 81,723,559 --------------- UTAH 0.4% 2,380 Mountain Regl Wtr Spl Svc Dist Rfdg (MBIA Insd) 5.000 12/15/33 2,445,569 --------------- VIRGINIA 0.7% 2,000 Tob Settlement Fin Corp VA Asset Bkd 5.500 06/01/26 2,059,760 1,670 Tob Settlement Fin Corp VA Asset Bkd 5.625 06/01/37 1,734,362 --------------- 3,794,122 --------------- WASHINGTON 8.3% 9,850 Bellevue, WA Convention Ctr Auth Spl Oblig Rev Comp Int Rfdg (MBIA Insd) * 02/01/25 4,066,277 7,500 Chelan Cnty, WA Pub Util Dist No 001 Cons Rev Chelan Hydro Ser A (AMT) (MBIA Insd) 5.600 01/01/36 7,976,475 5,000 Energy Northwest WA Elec Rev Columbia Generating Ser A Rfdg (FSA Insd) 5.500 07/01/16 5,402,950 2,500 Energy Northwest WA Elec Rev Proj No 3 Ser A Rfdg (FSA Insd) 5.500 07/01/18 2,686,950 5,000 Energy Northwest WA Elec Rev Proj No 3 Ser B Rfdg (FSA Insd) 6.000 07/01/16 5,552,600 2,000 Port Seattle, WA Rev Inter Lien Ser A Rfdg (MBIA Insd) 5.000 03/01/28 2,061,140 2,000 Port Seattle, WA Rev Ser B (AMT) (MBIA Insd) 5.625 02/01/24 2,102,820 2,120 Seattle, WA Muni Lt & Pwr Rev 5.625 12/01/17 2,254,556 3,000 Spokane, WA Pub Fac Dist Hotel Motel & Sales Use Tax (MBIA Insd) 5.250 09/01/33 3,134,250 4,750 Tacoma, WA Elec Sys Rev Ser A Rfdg (FSA Insd) 5.750 01/01/14 5,155,318 1,500 Tacoma, WA Elec Sys Rev Ser B Rfdg (FSA Insd) 5.500 01/01/12 1,616,490 5,125 Washington St Pub Pwr Supply Sys Nuclear Proj No 3 Rev Ser C Rfdg (MBIA Insd) (a) * 07/01/14 3,659,506 --------------- 45,669,332 --------------- WEST VIRGINIA 1.5% 8,000 Harrison Cnty, WV Cmnty Solid Waste Disp Rev West Penn Pwr Co Proj Ser A (AMT) (MBIA Insd) 6.875 04/15/22 8,019,520 --------------- WISCONSIN 0.9% 1,500 Southeast WI Professional Baseball Pk Dist Sales Tax Rev Ser A Rfdg (MBIA Insd) 5.500 12/15/20 1,690,545 3,000 Wisconsin St Hlth & Ed Fac Wheaton Franciscan Svc Rfdg 5.750 08/15/30 3,187,980 --------------- 4,878,525 --------------- WYOMING 0.2% 1,000 University WY Univ Rev Fac Impt (FSA Insd) 5.500 06/01/18 1,066,490 --------------- PUERTO RICO 2.2% 10,000 Puerto Rico Comwlth Hwy & Tran Auth Hwy Rev Ser Y Rfdg (FSA Insd) (f) 6.250 07/01/21 12,136,500 --------------- TOTAL INVESTMENTS 160.8% (Cost $846,938,665) 886,996,932 OTHER ASSETS IN EXCESS OF LIABILITIES 0.9% 5,299,942 PREFERRED SHARES (INCLUDING ACCRUED DISTRIBUTIONS) (61.7%) (340,545,477) --------------- NET ASSETS APPLICABLE TO COMMON SHARES 100.0% $ 551,751,397 =============== Percentages are calculated as a percentage of net assets applicable to common shares. * Zero coupon bond (a) The Trust owns 100% of the outstanding bond issuance. (b) Security purchased on a when-issued or delayed delivery basis. (c) 144A securities are those which are exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These securities may only be resold in transactions exempt from registration which are normally those transactions with qualified institutional buyers. (d) These securities are restricted and may be resold only in transactions exempt from registration which are normally those transactions with qualified institutional buyers. Restricted securities comprise 4.2% of net assets applicable to common shares. (e) Security is a "step-up" bond where the coupon increases or steps up at a predetermined date. (f) All or a portion of this security has been physically segregated in connection with open futures contracts. ACA - American Capital Access AGL - Assured Guaranty Ltd. AMBAC - AMBAC Indemnity Corp. AMT - Alternative Minimum Tax CIFG - CDC IXIS Financial Guaranty Connie Lee - Connie Lee Insurance Co. FGIC - Financial Guaranty Insurance Co. FHA - Federal Housing Administration FNMA - Federal National Mortgage Association FSA - Financial Security Assurance Inc. GNMA - Government National Mortgage Association MBIA - Municipal Bond Investors Assurance Corp. XLCA - XL Capital Assurance Inc. FUTURES CONTRACTS OUTSTANDING AS OF JULY 31, 2006: SHORT CONTRACTS: CONTRACTS DEPRECIATION U.S. Treasury Notes 10-Year Futures September 2006 (Current Notional Value of $106,031 per contract) 908 $ (847,279) ========= ============ SWAP AGREEMENTS OUTSTANDING AS OF JULY 31, 2006: INTEREST RATE SWAPS PAY/ RECEIVE UNREALIZED FLOATING FIXED EXPIRATION NOTIONAL APPRECIATION/ COUNTERPARTY FLOATING RATE INDEX RATE RATE DATE AMOUNT (000) DEPRECIATION JP Morgan Chase Bank, N.A. USD-BMA Municipal Swap Index Receive 4.480% 9/28/2026 $ 12,160 $ (274,115) JP Morgan Chase Bank, N.A. USD-BMA Municipal Swap Index Receive 4.249 9/28/2016 17,420 (291,814) JP Morgan Chase Bank, N.A. USD-BMA Municipal Swap Index Receive 4.474 10/3/2026 16,890 (365,897) ------------ $ (931,826) ============ Item 2. Controls and Procedures. (a) The Trust's principal executive officer and principal financial officer have concluded that the Trust's disclosure controls and procedures are sufficient to ensure that information required to be disclosed by the Trust in this Form N-Q was recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms, based upon such officers' evaluation of these controls and procedures as of a date within 90 days of the filing date of the report. (b) There were no changes in the Trust's internal control over financial reporting that occurred during the registrant's fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Trust's internal control over financial reporting. Item 3. Exhibits. (a) A certification for the Principal Executive Officer of the registrant is attached hereto as part of EX-99.cert. (b) A certification for the Principal Financial Officer of the registrant is attached hereto as part of EX-99.cert. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) Van Kampen Municipal Opportunity Trust By: /s/ Ronald E. Robison --------------------- Name: Ronald E. Robison Title: Principal Executive Officer Date: September 21, 2006 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: /s/ Ronald E. Robison --------------------- Name: Ronald E. Robison Title: Principal Executive Officer Date: September 21, 2006 By: /s/ James W. Garrett -------------------- Name: James W. Garrett Title: Principal Financial Officer Date: September 21, 2006