UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

FORM N-Q

 

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

 

Investment Company Act file number 811-08707

 

Name of Fund: BlackRock MuniHoldings Insured Fund, Inc. (MUS)

 

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

 

Name and address of agent for service: Anne F. Ackerley, Chief Executive Officer, BlackRock MuniHoldings Insured Fund, Inc., 40 East 52nd Street, New York, NY 10022.

 

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

 

Date of fiscal year end: 04/30/2010

 

Date of reporting period: 07/31/2009

 

Item 1 – Schedule of Investments

 


 

 

BlackRock MuniHoldings Insured Fund, Inc.

 

 

 

Schedule of Investments July 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)

 

 

 

 

 

 

 

 

 

 











 

 

 

 

 

 

 

 

State

 

Municipal Bonds

 

Par
(000)

 

Value

 









Alabama - 0.8%

 

County of Jefferson Alabama, RB, Series A, 5.50%, 1/01/22

 

$

2,170

 

$

1,280,994

 











Arkansas - 3.9%

 

Arkansas Development Finance Authority, Refunding RB, Mortgage Loan, Series C (FHA), 5.35%, 12/01/35

 

 

6,220

 

 

6,205,570

 











California - 18.2%

 

California State Public Works Board, RB, Department General Services, Capitol East End, Series A (AMBAC), 5.00%, 12/01/27

 

 

2,000

 

 

1,808,120

 

 

 

Central Unified School District, GO, Election of 2008, Series A (AGC), 5.63%, 8/01/33

 

 

1,325

 

 

1,340,661

 

 

 

City of Vista California, COP, Community Projects (MBIA), 5.00%, 5/01/37

 

 

3,600

 

 

3,129,084

 

 

 

County of Sacramento California, RB, Senior, Series A (AGC), 5.50%, 7/01/41

 

 

2,100

 

 

2,023,539

 

 

 

East Side Union High School District-Santa Clara County, California, GO, 2002 Election Series B (MBIA), 5.00%, 8/01/27

 

 

1,800

 

 

1,772,712

 

 

 

Eastern Municipal Water District, California, COP, Series H, 5.00%, 7/01/35

 

 

635

 

 

604,006

 

 

 

Modesto Schools Infrastructure Financing Agency, Special Tax (AMBAC), 5.50%, 9/01/36

 

 

2,565

 

 

2,111,123

 

 

 

Oceanside Unified School District, California, GO, Series A (AGC), 5.25%, 8/01/33

 

 

1,825

 

 

1,826,296

 

 

 

San Pablo Joint Powers Financing Authority, California, TAN, CAB (MBIA), 5.66%, 12/01/24 (a)

 

 

2,635

 

 

1,031,813

 

 

 

San Pablo Joint Powers Financing Authority, California, TAN, CAB (MBIA), 5.66%, 12/01/25 (a)

 

 

2,355

 

 

856,419

 

 

 

San Pablo Joint Powers Financing Authority, California, TAN, CAB (MBIA), 5.66%, 12/01/26 (a)

 

 

2,355

 

 

795,566

 

 

 

Santa Ana Unified School District, GO (MBIA), 5.00%, 8/01/32

 

 

4,265

 

 

4,068,810

 

 

 

Stockton Public Financing Authority, California, RB, Redevelopment Projects, Series A, (Radian), 5.25%, 9/01/31

 

 

2,140

 

 

1,664,214

 

 

 

Tustin Unified School District, California, Special Tax, Senior Lien, Community Facilities District 97-1, Series A (FSA), 5.00%, 9/01/38

 

 

2,800

 

 

2,416,820

 

 

 

West Contra Costa Unified School District, California, GO, Election of 2000, Series C (MBIA), 5.00%, 8/01/21

 

 

3,480

 

 

3,501,646

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

28,950,829

 


 


Portfolio Abbreviations


To simplify the listings of portfolio holdings in the Schedule of Investments, the names and descriptions of many of the securities have been abbreviated according to the following list.

 

 

AGC

Assured Guaranty Corp.

AMBAC

American Municipal Bond Assurance Corp.

AMT

Alternative Minimum Tax (subject to)

BHAC

Berkshire Hathaway Assurance Corp.

CAB

Capital Appreciation Bonds

COP

Certificates of Participation

EDA

Economic Development Authority

FGIC

Financial Guaranty Insurance Co.

FHA

Federal Housing Administration

FNMA

Federal National Mortgage Association

FSA

Financial Security Assurance, Inc.

GNMA

Government National Mortgage Association

GO

General Obligation Bonds

HDA

Housing Development Authority

HFA

Housing Finance Agency

ISD

Independent School District

MBIA

Municipal Bond Investors Assurance
(National Public Finance Guaranty Corp.)

RB

Revenue Bonds

TAN

Tax Anticipation Notes

1



 

 

BlackRock MuniHoldings Insured Fund, Inc.

 

 

 

Schedule of Investments July 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)

 

 

 

 

 

 

 

 

 

 











 

 

 

 

 

 

 

 

State

 

Municipal Bonds

 

Par
(000)

 

Value

 









Colorado - 1.2%

 

Colorado Health Facilities Authority, RB, Hospital, NCMC, Inc. Project, Series B (FSA), 6.00%, 5/15/26

 

$

1,900

 

$

1,975,354

 











District of Columbia - 0.2%

 

District of Columbia, RB, Deed Tax, Housing Production Trust Fund, Series A (MBIA), 5.00%, 6/01/32

 

 

400

 

 

381,136

 











Florida - 15.7%

 

Broward County HFA, RB, Series E (FNMA), AMT, 5.90%, 10/01/39

 

 

1,420

 

 

1,432,468

 

 

 

City of Orlando Florida, RB, Senior, 6th Cent Contract Payments, Series A (AGC), 5.25%, 11/01/38

 

 

2,000

 

 

1,961,720

 

 

 

County of Miami-Dade Florida, RB, CAB, Sub-Series A (MBIA), 5.24%, 10/01/37 (a)

 

 

2,225

 

 

298,284

 

 

 

County of Miami-Dade Florida, RB, Miami International Airport, Series A (FSA), AMT, 5.50%, 10/01/41

 

 

3,900

 

 

3,501,693

 

 

 

County of Pasco Florida, RB, Half-Cent (AMBAC), 5.13%, 12/01/28

 

 

3,850

 

 

3,414,912

 

 

 

Jacksonville Health Facilities Authority, RB, Baptist Medical Center (FSA), 5.00%, 8/15/37

 

 

4,515

 

 

4,311,960

 

 

 

Jacksonville Port Authority, RB (AGC), AMT, 6.00%, 11/01/38

 

 

2,590

 

 

2,520,174

 

 

 

Orange County School Board, COP, Series A (AGC), 5.50%, 8/01/34

 

 

7,395

 

 

7,511,545

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

24,952,756

 











Illinois - 12.0%

 

Chicago Board of Education, Illinois, GO, Chicago School Reform Board, Series A (MBIA), 5.50%, 12/01/26

 

 

1,200

 

 

1,314,372

 

 

 

Chicago Transit Authority, RB, Federal Transit Administration Section 5309, Series A (AGC), 6.00%, 6/01/26

 

 

2,000

 

 

2,249,160

 

 

 

City of Chicago Illinois, RB, Series A (FSA), 5.00%, 1/01/33

 

 

8,000

 

 

7,679,840

 

 

 

City of Chicago Illinois, Refunding RB, General Airport Third Lien, Series A (MBIA), AMT, 5.75%, 1/01/19

 

 

1,875

 

 

1,886,212

 

 

 

City of Chicago Illinois, Refunding RB, Second Lien (MBIA), 5.50%, 1/01/30

 

 

1,310

 

 

1,352,326

 

 

 

Lake Cook-Dane & McHenry Counties Community Unit School District 220, Illinois, GO, Unrefunded Balance (MBIA), 5.75%, 12/01/19

 

 

45

 

 

46,957

 

 

 

State of Illinois, GO, First Series (MBIA), 6.00%, 1/01/18

 

 

4,500

 

 

4,579,515

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

19,108,382

 











Indiana - 4.5%

 

Indiana Municipal Power Agency, Indiana, RB, Series A (MBIA), 5.00%, 1/01/42

 

 

6,000

 

 

5,669,280

 

 

 

Indianapolis Local Public Improvement Bond Bank, RB, Waterworks Project, Series A (AGC), 5.50%, 1/01/38

 

 

1,430

 

 

1,413,712

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

7,082,992

 











Iowa - 1.1%

 

Iowa Finance Authority, RB, Iowa Health System (AGC), 5.25%, 2/15/29

 

 

1,770

 

 

1,742,353

 











Kentucky - 1.1%

 

Kentucky Economic Development Finance Authority, Kentucky, RB, Louisville Arena, Sub-Series A-1 (AGC), 6.00%, 12/01/38

 

 

650

 

 

667,862

 

 

 

Kentucky State Property & Buildings Commission, Kentucky, Refunding RB, Project No. 93 (AGC), 5.25%, 2/01/29

 

 

1,000

 

 

1,044,870

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

1,712,732

 











2



 

 

BlackRock MuniHoldings Insured Fund, Inc.

 

 

 

Schedule of Investments July 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)

 

 

 

 

 

 

 

 

 

 











 

 

 

 

 

 

 

 

State

 

Municipal Bonds

 

Par
(000)

 

Value

 









Louisiana - 1.4%

 

Louisiana State Citizens Property Insurance Corp., RB, Series C-3, Remarketed (AGC), 6.13%, 6/01/25

 

$

2,055

 

$

2,247,307

 











Massachusetts - 1.7%

 

Massachusetts HFA, Massachusetts, RB, Housing Development, Series A (MBIA), AMT, 5.15%, 6/01/11

 

 

315

 

 

316,840

 

 

 

Massachusetts HFA, Massachusetts, RB, Rental, Mortgage, Series C (FSA), AMT, 5.50%, 7/01/32

 

 

2,440

 

 

2,417,918

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

2,734,758

 











Michigan - 15.7%

 

City of Detroit Michigan, RB, Second Lien, Series B (MBIA), 5.50%, 7/01/29

 

 

2,410

 

 

2,338,977

 

 

 

City of Detroit Michigan, RB, Second Lien, Series E, Remarketed (BHAC), 5.75%, 7/01/31

 

 

3,240

 

 

3,347,017

 

 

 

City of Detroit Michigan, RB, Senior Lien, Series B, Remarketed (FSA), 7.50%, 7/01/33

 

 

700

 

 

810,516

 

 

 

City of Detroit Michigan, Refunding RB, Second Lien, Series C, Remarketed (BHAC), 5.75%, 7/01/27

 

 

1,580

 

 

1,681,878

 

 

 

City of Detroit Michigan, Refunding RB, Senior Lien, Series C-1, Remarketed (FSA), 7.00%, 7/01/27

 

 

4,810

 

 

5,463,968

 

 

 

City of Detroit Michigan, Refunding RB, Senior Lien, Series C-2, Remarketed (BHAC), 5.25%, 7/01/29

 

 

2,910

 

 

2,913,958

 

 

 

Michigan Strategic Fund, Refunding RB, Detroit Edison Co. Project, Series A (Syncora), AMT, 5.50%, 6/01/30

 

 

2,000

 

 

1,740,420

 

 

 

Michigan Strategic Fund, Refunding RB, Detroit Edison Pollution, Series B (Syncora), AMT, 5.65%, 9/01/29

 

 

1,500

 

 

1,338,015

 

 

 

Michigan Strategic Fund, Refunding RB, Detroit Edison Pollution, Series C (Syncora), AMT, 5.65%, 9/01/29

 

 

3,500

 

 

3,122,035

 

 

 

Royal Oak Hospital Finance Authority, Michigan, RB, William Beaumont Hospital, 8.25%, 9/01/39

 

 

1,910

 

 

2,154,614

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

24,911,398

 











Minnesota - 3.6%

 

City of Minneapolis Minnesota, RB, Fairview Health Services, Series B (AGC), 6.50%, 11/15/38

 

 

1,325

 

 

1,443,362

 

 

 

Sauk Rapids ISD No. 47, Minnesota, GO, Series A (MBIA), 5.65%, 2/01/19

 

 

4,015

 

 

4,260,437

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

5,703,799

 











Missouri - 5.9%

 

Cape Girardeau School District No. 63, Missouri, GO, Missouri Direct Deposit Program (FGIC), 5.50%, 3/01/18

 

 

2,000

 

 

2,047,740

 

 

 

Mehlville School District No. R-9, Missouri, COP, Series A (FSA), 5.50%, 3/01/14 (b)

 

 

1,565

 

 

1,685,208

 

 

 

Mehlville School District No. R-9, Missouri, COP, Series A (FSA), 5.50%, 3/01/14

 

 

360

 

 

380,660

 

 

 

Mehlville School District No. R-9, Missouri, COP, Series A (FSA), 5.50%, 3/01/15 (b)

 

 

1,770

 

 

1,905,954

 

 

 

Mehlville School District No. R-9, Missouri, COP, Series A (FSA), 5.50%, 3/01/15

 

 

405

 

 

428,243

 

 

 

Mehlville School District No. R-9, Missouri, COP, Series A (FSA), 5.50%, 3/01/16 (b)

 

 

955

 

 

1,028,353

 

3



 

 

BlackRock MuniHoldings Insured Fund, Inc.

 

 

 

Schedule of Investments July 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)

 

 

 

 

 

 

 

 

 

 











 

 

 

 

 

 

 

 

State

 

Municipal Bonds

 

Par
(000)

 

Value

 









 

 

Mehlville School District No. R-9, Missouri, COP, Series A (FSA), 5.50%, 3/01/16

 

$

215

 

$

227,339

 

 

 

Mehlville School District No. R-9, Missouri, COP, Series A (FSA), 5.50%, 3/01/17 (b)

 

 

1,220

 

 

1,313,708

 

 

 

Mehlville School District No. R-9, Missouri, COP, Series A (FSA), 5.50%, 3/01/17

 

 

280

 

 

296,069

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

9,313,274

 











Nevada - 1.7%

 

County of Clark Nevada, RB, Jet Aviation Fuel Tax, Series C (AMBAC), AMT, 5.38%, 7/01/20

 

 

1,000

 

 

958,520

 

 

 

County of Clark Nevada, RB, Las Vegas, McCarran, Series A-1 (AMBAC), AMT, 5.00%, 7/01/23

 

 

1,750

 

 

1,669,692

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

2,628,212

 











New Jersey - 7.8%

 

New Jersey EDA, RB, Motor Vehicle Surcharge Revenue, Series A (MBIA), 5.25%, 7/01/33

 

 

6,700

 

 

6,513,003

 

 

 

New Jersey Health Care Facilities Financing Authority, RB, Virtua Health (AGC), 5.50%, 7/01/38

 

 

2,100

 

 

2,096,871

 

 

 

New Jersey Transportation Trust Fund Authority, New Jersey, RB, Transportation System, Series A (AGC), 5.63%, 12/15/28

 

 

3,500

 

 

3,726,555

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

12,336,429

 











New York - 6.4%

 

City of New York, New York, GO, Series E (FSA), 5.00%, 11/01/17

 

 

4,000

 

 

4,320,320

 

 

 

New York City Transitional Finance Authority, RB, Fiscal 2009, Series S-3, 5.25%, 1/15/39

 

 

1,400

 

 

1,397,872

 

 

 

Sales Tax Asset Receivable Corp., RB, Series A (AMBAC), 5.25%, 10/15/27

 

 

4,095

 

 

4,357,858

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

10,076,050

 











Oregon - 0.9%

 

City of Portland Oregon, TAN, Oregon Convention Center, Series A (AMBAC), 5.75%, 6/15/15

 

 

1,400

 

 

1,447,796

 











Rhode Island - 3.3%

 

Providence Redevelopment Agency, Rhode Island, RB, Public Safety & Municipal Buildings, Series A (AMBAC), 5.75%, 4/01/19 (b)

 

 

5,000

 

 

5,217,350

 











Texas - 18.3%

 

City of Dallas Texas, Refunding RB & Improvement (AGC), 5.25%, 8/15/38

 

 

1,250

 

 

1,246,275

 

 

 

City of Houston Texas, Refunding RB, Combined, First Lien, Series A (AGC), 6.00%, 11/15/35

 

 

4,000

 

 

4,394,360

 

 

 

Harris County Health Facilities Development Corp., Refunding RB, Memorial Hermann Healthcare System, Series B, 7.25%, 12/01/35

 

 

600

 

 

648,042

 

 

 

Lower Colorado River Authority, Refunding RB, (AGC), 5.50%, 5/15/36

 

 

2,610

 

 

2,657,215

 

 

 

Lubbock Copper Texas ISD, GO, School Building (AGC), 5.75%, 2/15/42

 

 

635

 

 

652,336

 

 

 

North Texas Tollway Authority, Refunding RB, System, First (MBIA), 5.75%, 1/01/40

 

 

6,710

 

 

6,680,946

 

4


 

 

BlackRock MuniHoldings Insured Fund, Inc.

 

 

 

Schedule of Investments July 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)




 

 

 

 

 

 

 

 

 

 

State

 

Municipal Bonds

 

Par
(000)

 

Value

 









 

 

North Texas Tollway Authority, Refunding RB, System, First Tier, Series A (MBIA), 5.63%, 1/01/33

 

$

6,585

 

$

6,571,896

 

 

 

North Texas Tollway Authority, Refunding RB, System, First Tier, Series B (MBIA), 5.75%, 1/01/40

 

 

6,275

 

 

6,247,829

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

29,098,899

 











Virginia - 1.1%

 

Virginia Public School Authority, Virginia, RB, School Financing, 6.50%, 12/01/35

 

 

1,500

 

 

1,676,730

 











Washington - 2.5%

 

Chelan County Public Utility District No. 1, RB, Chelan Hydro System, Series A (AMBAC), AMT, 5.45%, 7/01/37

 

 

2,310

 

 

2,036,912

 

 

 

Snohomish County Public Utility District No. 1, Washington, RB (FSA), 5.50%, 12/01/22

 

 

1,810

 

 

1,921,695

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

3,958,607

 











Puerto Rico - 1.4%

 

Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 6.38%, 8/01/39

 

 

2,115

 

 

2,193,318

 











 

 

Total Municipal Bonds - 130.4%

 

 

 

 

 

206,937,025

 











 

 

Municipal Bonds Transferred to Tender Option Bond Trusts (c)

 

 

 

 

 

 

 











California - 2.8%

 

City of San Jose California, GO, Libraries, Parks, Public Safety Project (MBIA), 5.00%, 9/01/30

 

 

1,259

 

 

1,262,088

 

 

 

Sequoia Union High School District, California, GO, Refunding, Series B (FSA), 5.50%, 7/01/35

 

 

3,149

 

 

3,196,244

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

4,458,332

 











Colorado - 3.4%

 

Colorado Health Facilities Authority, RB, Catholic Health, Series C3 (FSA), 5.10%, 10/01/41

 

 

5,610

 

 

5,471,040

 











District of Columbia - 0.7%

 

District of Columbia Water & Sewer Authority, Refunding RB, Series A, 6.00%, 10/01/35

 

 

1,040

 

 

1,125,356

 











Florida - 9.0%

 

City of St. Petersburg, Florida, Refunding RB (MBIA), 5.00%, 10/01/35

 

 

4,302

 

 

3,955,067

 

 

 

County of Miami-Dade Florida, GO, Building Better Community Program, Series B-1, 6.00%, 7/01/38

 

 

7,500

 

 

7,798,575

 

 

 

Lee County HFA, RB, Multi-County Program, Series A-2 (GNMA), AMT, 6.00%, 9/01/40

 

 

2,295

 

 

2,467,171

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

14,220,813

 











Georgia - 2.6%

 

City of Augusta, Georgia, RB (FSA), 5.25%, 10/01/34

 

 

4,000

 

 

4,055,640

 











Illinois - 1.6%

 

City of Chicago, Illinois, Refunding RB, Second Lien (FSA), 5.25%, 11/01/33

 

 

2,509

 

 

2,542,027

 











Kentucky - 0.9%

 

Kentucky State Property & Buildings Commission, Refunding RB, Project No. 93 (AGC), 5.25%, 2/01/27

 

 

1,406

 

 

1,490,857

 











Massachusetts - 7.2%

 

Massachusetts Bay Transportation Authority, Refunding RB, Senior Series A, 5.00%, 7/01/35

 

 

3,375

 

 

3,374,865

 

 

 

Massachusetts School Building Authority, RB, Series A (FSA), 5.00%, 8/15/30

 

 

8,008

 

 

8,129,096

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

11,503,961

 











5



 

 

BlackRock MuniHoldings Insured Fund, Inc.

 

 

 

Schedule of Investments July 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)




 

 

 

 

 

 

 

 

 

 

State

 

Municipal Bonds Transferred to
Tender Option Bond Trusts (c)

 

Par
(000)

 

Value

 









Nevada - 5.9%

 

Clark County Water Reclamation District, GO, Limited Tax, 6.00%, 7/01/38

 

$

5,000

 

$

5,330,000

 

 

 

Clark County Water Reclamation District, GO, Series B, 5.50%, 7/01/29

 

 

3,749

 

 

3,959,904

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

9,289,904

 











Virginia - 1.0%

 

Virginia HDA, RB, Series H, Sub-Series H-1 (MBIA), 5.35%, 7/01/31

 

 

1,500

 

 

1,509,135

 











Washington - 2.6%

 

City of Bellevue, Washington, GO, Refunding (MBIA), 5.50%, 12/01/39

 

 

4,002

 

 

4,113,358

 











 

 

Total Municipal Bonds Transferred to Tender Option Bond Trusts - 37.7%

 

 

 

 

 

59,780,423

 











 

 

Total Long-Term Investments
(Cost - $272,388,324) - 168.1%

 

 

 

 

 

266,717,448

 











 

 

Short-Term Securities

 

Shares

 

 

 

 











 

 

FFI Institutional Tax-Exempt Fund, 0.42% (d)(e)

 

 

13,520,732

 

 

13,520,732

 











 

 

Total Short-Term Securities
(Cost - $13,520,732) - 8.5%

 

 

 

 

 

13,520,732

 











 

 

Total Investments
(Cost - $285,909,056*) - 176.6%

 

 

 

 

 

280,238,180

 

 

 

Liabilities in Excess of Other Assets - (0.7)%

 

 

 

 

 

(1,014,946

)

 

 

Liability for Trust Certificates, Including Interest Expense and Fees Payable - (21.1)%

 

 

 

 

 

(33,517,829

)

 

 

Preferred Shares, at Redemption Value - (54.8)%

 

 

 

 

 

(87,010,096

)

 

 

 

 

 

 

 




 

 

Net Assets Applicable to Common Shares - 100.0%

 

 

 

 

$

158,695,309

 

 

 

 

 

 

 

 





 

 

*

The cost and unrealized appreciation (depreciation) of investments as of July 31, 2009, as computed for federal income tax purposes, were as follows:


 

 

 

 

 

 

 

Aggregate cost

 

$

248,890,014

 

 

 

 




 

Gross unrealized appreciation

 

$

6,540,543

 

 

Gross unrealized depreciation

 

 

(8,667,118

)

 

 

 




 

Net unrealized depreciation

 

$

(2,126,575

)

 

 

 





 

 

(a)

Represents a zero-coupon bond. Rate shown reflects the current yield as of the report date.

 

 

(b)

US government securities, held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.

 

 

(c)

Securities represent bonds transferred to a tender option bond trust in exchange for which the Fund acquired the residual interest certificates. These securities serve as collateral in a financing transaction.

 

 

(d)

Investments in companies considered to be an affiliate of the Fund, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows:


 

 

 

 

 

 

 

 

 

 







 

Affiliate

 

Net Activity

 

Income

 

 







 

FFI Institutional Tax-Exempt Fund

 

 

(1,805,971

)

$

14,384

 

 










 

 

(e)

Represents the current yield as of report date.

6



 

BlackRock MuniHoldings Insured Fund, Inc.

 

Schedule of Investments July 31, 2009 (Unaudited)



 

 

 

Financial Accounting Standards Board Statement of Financial Accounting Standards No. 157, “Fair Value Measurements” clarifies the definition of fair value, establishes a framework for measuring fair values and requires additional disclosures about the use of fair value measurements. Various inputs are used in determining the fair value of investments, which are as follows:

 

 

 

 

Level 1 - price quotations in active markets/exchanges for identical securities

 

 

 

 

Level 2 - other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

 

 

 

 

Level 3 - unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments)

The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Fund’s policy regarding valuation of investments and other significant accounting policies, please refer to the Fund’s most recent financial statements as contained in its annual report.

The following table summarizes the inputs used as of July 31, 2009 in determining the fair valuation of the Fund’s investments:

 

 

 

 

 

 

 

 






 

Valuation
Inputs

 

 

Investments in
Securities

 

 






 

 

 

 

Assets

 

 

Level 1 - Short Term Securities

 

$

13,520,732

 

 

Level 2 - Long Term Investments1

 

 

266,717,448

 

 

Level 3

 

 

 

 






 

Total

 

$

280,238,180

 

 

 

 





 

 

 

1 See above Schedule of Investments for values in each state or political classification.

7


Item 2 –

Controls and Procedures

   

2(a) –

The registrant's principal executive and principal financial officers or persons performing similar functions have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13(a)-15(b) under the Securities Exchange Act of 1934, as amended.

   

2(b) –

There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.

   

Item 3 –

Exhibits

 

Certifications – Attached hereto

 

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.

 

 

 

BlackRock MuniHoldings Insured Fund, Inc.

   
 

By:

/s/ Anne F. Ackerley  
    Anne F. Ackerley
    Chief Executive Officer of
    BlackRock MuniHoldings Insured Fund, Inc.
   
  Date: September 22, 2009
   
  Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
   
 

By:

/s/ Anne F. Ackerley  
    Anne F. Ackerley
    Chief Executive Officer (principal executive officer) of
    BlackRock MuniHoldings Insured Fund, Inc.
   
  Date: September 22, 2009
   
 

By:

/s/ Neal J. Andrews  
    Neal J. Andrews
    Chief Financial Officer (principal financial officer) of
    BlackRock MuniHoldings Insured Fund, Inc.
   
  Date: September 22, 2009