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 811-08349

Name of Fund: BlackRock MuniHoldings Insured Investment Fund (MFL)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Donald C. Burke, Chief Executive Officer, BlackRock MuniHoldings Insured Investment Fund, 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011

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

Date of fiscal year end: 08/31/2009

Date of reporting period: 05/31/2009

Item 1 – Schedule of Investments


 

 

BlackRock MuniHoldings Insured Investment Fund

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds

 

Par
(000)

 

Value

 









California - 2.5%

 

 

 

 

 

 

 

 

 











County/City/Special District/School District - 1.8%

 

Los Angeles, California, Municipal Improvement Corporation, Lease Revenue Refunding Bonds, Series B, 5.50%, 4/01/39 (a)

 

$

2,930

 

$

2,951,448

 

 

 

Los Angeles, California, Unified School District, GO, Series D,5.25%, 7/01/25

 

 

3,485

 

 

3,651,722

 

 

 

Los Angeles, California, Unified School District, GO, Series I, 5%,1/01/34

 

 

2,400

 

 

2,333,712

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

8,936,882

 











Utilities - 0.7%

 

Manteca, California, Financing Authority, Sewer Revenue Bonds,5.75%, 12/01/36 (a)

 

 

3,285

 

 

3,344,623

 











 

 

Total Municipal Bonds in California

 

 

 

 

 

12,281,505

 











District of Columbia - 0.4%

 

 

 

 

 

 

 

 

 











Education - 0.4%

 

District of Columbia, University Revenue Refunding Bonds (Georgetown University), Series D, 5.50%, 4/01/36 (b)

 

 

1,730

 

 

1,797,712

 











 

 

Total Municipal Bonds in the District of Columbia

 

 

 

 

 

1,797,712

 











Florida - 100.1%

 

 

 

 

 

 

 

 

 











Corporate - 0.4%

 

Collier County, Florida, IDA, IDR, Refunding (Southern States Utilities), AMT, 6.50%, 10/01/25

 

 

900

 

 

759,915

 

 

 

Hillsborough County, Florida, IDA, PCR, Refunding (Tampa Electric Company Project), Series B, 5.15%, 9/01/25

 

 

1,100

 

 

1,097,547

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

1,857,462

 











County/City/Special District/School District - 24.2%

 

Alachua County, Florida, School Board, COP, 5.25%,7/01/29 (c)

 

 

3,075

 

 

3,076,199

 

 

 

Cape Coral, Florida, Special Obligation Revenue Bonds, 5%,10/01/30 (d)

 

 

3,000

 

 

2,885,580

 

 

 

Clay County, Florida, School Board, COP (Master Lease Program), 5.75%, 7/01/10 (d)(e)

 

 

1,320

 

 

1,407,529

 

 

 

Hernando County, Florida, School Board, COP, 5%, 7/01/30 (d)

 

 

5,365

 

 

5,000,663

 

 

 

Jacksonville, Florida, Guaranteed Entitlement Revenue Refunding and Improvement Bonds, 5.25%, 10/01/32 (d)(f)

 

 

7,305

 

 

7,319,975

 

 

 

Jacksonville, Florida, Sales Tax Revenue Bonds, 5.50%,10/01/16 (c)

 

 

2,000

 

 

2,138,340

 

 

 

Jacksonville, Florida, Sales Tax Revenue Bonds, 5.50%,10/01/18 (c)

 

 

3,800

 

 

3,991,748

 

 

 

Lee County, Florida, Capital Revenue Bonds, 5.25%,10/01/23 (c)

 

 

4,225

 

 

4,261,842

 











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 list below.


 

 

AMT

Alternative Minimum Tax (subject to)

COP

Certificates of Participation

EDA

Economic Development Authority

GO

General Obligation Bonds

HFA

Housing Finance Agency

IDA

Industrial Development Authority

IDR

Industrial Development Revenue Bonds

M/F

Multi-Family

PCR

Pollution Control Revenue Bonds

S/F

Single-Family

VRDN

Variable Rate Demand Notes

1


 

 

BlackRock MuniHoldings Insured Investment Fund

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds

 

Par
(000)

 

Value

 









 

 

Leesburg, Florida, Capital Improvement Revenue Bonds, 5.25%,10/01/27 (d)(f)

 

$

1,605

 

$

1,618,257

 

 

 

Leesburg, Florida, Capital Improvement Revenue Bonds, 5.25%, 10/01/34 (d)(f)

 

 

3,425

 

 

3,317,524

 

 

 

Miami-Dade County, Florida, GO (Parks Program), 6%, 11/01/24 (d)(f)

 

 

6,705

 

 

6,832,663

 

 

 

Miami-Dade County, Florida, IDA, IDR (BAC Funding Corporation Project), Series A, 5.25%, 10/01/20 (c)

 

 

3,280

 

 

3,419,367

 

 

 

Orange County, Florida, School Board, COP, 5.50%, 8/01/25 (c)

 

 

1,300

 

 

1,359,020

 

 

 

Orlando, Florida, Senior Tourist Development Tax Revenue Bonds (6th Cent Contract Payments), Series A, 5.25%, 11/01/38 (a)

 

 

10,250

 

 

10,353,730

 

 

 

Osceola County, Florida, Infrastructure Sales Surplus Tax Revenue Bonds, 5.375%, 10/01/18 (c)

 

 

3,155

 

 

3,343,827

 

 

 

Osceola County, Florida, Tourist Development Tax Revenue Bonds, Series A, 5.50%, 10/01/27 (d)(f)

 

 

5,560

 

 

5,621,994

 

 

 

Palm Beach County, Florida, School Board, COP, Refunding, Series B, 5.375%, 8/01/17 (c)

 

 

6,115

 

 

6,372,992

 

 

 

Palm Beach County, Florida, School Board, COP, Series A, 6%, 8/01/10 (e)(f)

 

 

5,070

 

 

5,437,727

 

 

 

Palm Beach County, Florida, School Board, COP, Series A, 6.25%, 8/01/10 (e)(f)

 

 

13,205

 

 

14,201,317

 

 

 

Saint Johns County, Florida, Sales Tax Revenue Bonds, Series B, 5.25%, 10/01/32 (c)

 

 

640

 

 

642,022

 

 

 

Saint Johns County, Florida, Transportation Improvement Revenue Bonds, 5.125%, 10/01/32 (c)

 

 

3,250

 

 

3,225,723

 

 

 

Saint Lucie County, Florida, School Board, COP, 6.25%, 7/01/10 (e)(g)

 

 

4,055

 

 

4,347,244

 

 

 

Saint Lucie County, Florida, School Board, COP, Refunding, Series A, 5.50%, 7/01/18 (g)

 

 

1,495

 

 

1,584,760

 

 

 

Saint Lucie County, Florida, School Board, COP, Refunding, Series C, 5.50%, 7/01/18 (g)

 

 

1,170

 

 

1,240,247

 

 

 

Taylor County, Florida, Sales Tax Revenue Bonds, 6%, 10/01/10 (e)(f)

 

 

3,835

 

 

4,108,551

 

 

 

Village Center Community Development District, Florida, Recreational Revenue Bonds, Series A, 5.375%, 11/01/34 (d)

 

 

10,775

 

 

9,205,190

 

 

 

Village Center Community Development District, Florida, Recreational Revenue Bonds, Series A, 5.125%, 11/01/36 (d)

 

 

1,750

 

 

1,424,710

 

 

 

Village Center Community Development District, Florida, Utility Revenue Bonds, 5.25%, 10/01/23 (d)

 

 

2,900

 

 

2,669,769

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

120,408,510

 











Education - 10.6%

 

Broward County, Florida, Educational Facilities Authority Revenue Bonds (Nova Southeastern University), 5%, 4/01/31 (a)

 

 

8,000

 

 

8,036,240

 

 

 

Florida Higher Educational Facilities Financing Authority Revenue Bonds (Flagler College, Inc. Project), 5.25%, 11/01/36 (h)

 

 

12,000

 

 

10,077,600

 

2



 

 

BlackRock MuniHoldings Insured Investment Fund

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds

 

Par
(000)

 

Value

 









 

 

Florida State Board of Regents, Housing Revenue Bonds (University of Central Florida), 5.25%, 10/01/26 (d)(f)

 

$

1,650

 

$

1,660,329

 

 

 

Miami-Dade County, Florida, Educational Facilities Authority Revenue Bonds (University of Miami), Series A, 6%, 4/01/10 (c)(e)

 

 

19,425

 

 

20,497,843

 

 

 

Saint Johns County, Florida, IDA, IDR, Refunding (Professional Golf Project), 5.50%, 9/01/15 (d)

 

 

1,275

 

 

1,310,662

 

 

 

Saint Johns County, Florida, IDA, IDR, Refunding (Professional Golf Project), 5.50%, 9/01/16 (d)

 

 

1,345

 

 

1,375,518

 

 

 

Saint Johns County, Florida, IDA, IDR, Refunding (Professional Golf Project), 5.50%, 9/01/17 (d)

 

 

1,420

 

 

1,444,807

 

 

 

Saint Johns County, Florida, IDA, IDR, Refunding (Professional Golf Project), 5.50%, 9/01/18 (d)

 

 

1,500

 

 

1,517,655

 

 

 

Tallahassee, Florida, Lease Revenue Bonds (Florida State University Project), Series A, 5.25%, 8/01/23 (d)

 

 

2,800

 

 

2,834,720

 

 

 

Tallahassee, Florida, Lease Revenue Bonds (Florida State University Project), Series A, 5.375%, 8/01/26 (d)

 

 

1,000

 

 

1,017,360

 

 

 

Volusia County, Florida, IDA, Student Housing Revenue Bonds (Stetson University Project), Series A, 5%, 6/01/25 (i)

 

 

2,075

 

 

1,885,262

 

 

 

Volusia County, Florida, IDA, Student Housing Revenue Bonds (Stetson University Project), Series A, 5%, 6/01/35 (i)

 

 

1,740

 

 

1,418,274

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

53,076,270

 











Health - 7.1%

 

Jacksonville, Florida, Health Facilities Authority, Hospital Revenue Bonds (Baptist Medical Center Project), 5%, 8/15/37 (g)

 

 

13,190

 

 

12,356,788

 

 

 

Lee Memorial Health System, Florida, Hospital Revenue Bonds, Series A, 5%, 4/01/32 (c)

 

 

6,200

 

 

5,399,270

 

 

 

Orange County, Florida, Health Facilities Authority, Hospital Revenue Bonds (Orlando Regional Healthcare), 6%, 12/01/12 (e)

 

 

9,220

 

 

10,642,001

 

 

 

Orange County, Florida, Health Facilities Authority, Hospital Revenue Bonds (Orlando Regional Healthcare), Series A, 6.25%, 10/01/18 (d)

 

 

5,000

 

 

5,380,250

 

 

 

South Lake County, Florida, Hospital District Revenue Bonds (South Lake Hospital Inc.), 5.80%, 10/01/34

 

 

1,750

 

 

1,586,585

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

35,364,894

 











Housing - 4.2%

 

Escambia County, Florida, HFA, S/F Mortgage Revenue Refunding Bonds (Multi-County Program), AMT, Series A, 6.30%, 10/01/20 (d)(j)

 

 

80

 

 

81,491

 

 

 

Escambia County, Florida, HFA, S/F Mortgage Revenue Refunding Bonds (Multi-County Program), AMT, Series A, 6.375%, 10/01/26 (d)(j)

 

 

305

 

 

310,829

 

 

 

Florida HFA, Homeowner Mortgage Revenue Refunding Bonds, AMT, Series 2, 5.75%, 7/01/14 (d)

 

 

935

 

 

936,365

 

3



 

 

BlackRock MuniHoldings Insured Investment Fund

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds

 

Par
(000)

 

Value

 









 

 

Florida HFA, Homeowner Mortgage Revenue Refunding Bonds, AMT, Series 2, 5.90%, 7/01/29 (d)

 

$

8,005

 

$

8,099,699

 

 

 

Florida Housing Finance Corporation, Homeowner Mortgage Revenue Bonds, AMT, Series 11, 5.95%, 1/01/32 (g)

 

 

5,905

 

 

5,917,105

 

 

 

Florida Housing Finance Corporation, Homeowner Mortgage Revenue Refunding Bonds, AMT, Series 4, 6.25%, 7/01/22 (g)

 

 

585

 

 

599,256

 

 

 

Florida Housing Finance Corporation, Housing Revenue Bonds (Waverly Apartments), AMT, Series C-1, 6.30%, 7/01/30 (g)

 

 

2,055

 

 

2,099,244

 

 

 

Lee County, Florida, HFA, S/F Mortgage Revenue Bonds (Multi- County Program), AMT, Series A-1, 7.20%, 3/01/33 (k)(l)

 

 

65

 

 

66,011

 

 

 

Lee County, Florida, HFA, S/F Mortgage Revenue Refunding Bonds, AMT, Series A-2, 6.30%, 3/01/29 (k)(l)(m)

 

 

210

 

 

213,914

 

 

 

Manatee County, Florida, HFA, S/F Mortgage Revenue Refunding Bonds, AMT, Sub-Series 1, 6.25%, 11/01/28 (l)

 

 

305

 

 

310,591

 

 

 

Miami-Dade County, Florida, HFA, M/F Mortgage Revenue Bonds (Marbrisa Apartments Project), AMT, Series 2A, 6%, 8/01/26 (g)

 

 

2,185

 

 

2,229,377

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

20,863,882

 











State - 1.1%

 

Florida Municipal Loan Council Revenue Bonds, Series B, 5.375%, 11/01/25 (d)

 

 

1,285

 

 

1,290,872

 

 

 

Florida Municipal Loan Council Revenue Bonds, Series B, 5.375%, 11/01/30 (d)

 

 

4,150

 

 

4,100,408

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

5,391,280

 











Transportation - 29.7%

 

Hillsborough County, Florida, Aviation Authority Revenue Bonds, AMT, Series A, 5.50%, 10/01/38 (a)

 

 

10,655

 

 

9,909,043

 

 

 

Hillsborough County, Florida, Aviation Authority, Revenue Refunding Bonds, AMT, Series C, 5.75%, 10/01/26 (a)

 

 

2,875

 

 

2,949,923

 

 

 

Jacksonville, Florida, Port Authority Revenue Bonds, AMT, 6%, 11/01/38 (a)

 

 

11,760

 

 

11,743,183

 

 

 

Jacksonville, Florida, Port Authority, Seaport Revenue Bonds, AMT, 5.625%, 11/01/26 (d)

 

 

1,870

 

 

1,820,333

 

 

 

Lee County, Florida, Airport Revenue Bonds, AMT, Series A, 6%, 10/01/29 (g)

 

 

19,925

 

 

20,086,990

 

 

 

Miami-Dade County, Florida, Aviation Revenue Bonds, AMT, Series A, 5%, 10/01/33 (g)

 

 

10,010

 

 

8,841,333

 

 

 

Miami-Dade County, Florida, Aviation Revenue Bonds, AMT, Series A, 5.125%, 10/01/35 (g)

 

 

11,105

 

 

9,893,000

 

 

 

Miami-Dade County, Florida, Aviation Revenue Bonds (Miami International Airport), AMT, Series A, 6%, 10/01/24 (d)(f)

 

 

1,000

 

 

1,007,400

 

 

 

Miami-Dade County, Florida, Aviation Revenue Bonds (Miami International Airport), AMT, Series A, 6%, 10/01/29 (d)(f)

 

 

10,000

 

 

9,952,500

 

 

 

Miami-Dade County, Florida, Aviation Revenue Refunding Bonds (Miami International Airport), AMT, Series A, 5.50%, 10/01/41 (g)

 

 

11,400

 

 

10,524,024

 

 

 

Miami-Dade County, Florida, Expressway Authority, Toll System Revenue Bonds, Series B, 5.25%, 7/01/27 (d)(f)

 

 

8,995

 

 

9,066,420

 

4



 

 

BlackRock MuniHoldings Insured Investment Fund

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds

 

Par
(000)

 

Value

 









 

 

Miami-Dade County, Florida, Expressway Authority, Toll System Revenue Refunding Bonds, 5.125%, 7/01/25 (d)(f)

 

$

12,250

 

$

12,348,490

 

 

 

Miami-Dade County, Florida, IDA, IDR (Airis Miami II LLC Project), AMT, 6%, 10/15/19 (c)

 

 

5,100

 

 

5,131,467

 

 

 

Orlando-Orange County Expressway Authority, Florida, Expressway Revenue Bonds, Series B, 5%, 7/01/30 (c)

 

 

1,750

 

 

1,725,238

 

 

 

Orlando-Orange County Expressway Authority, Florida, Expressway Revenue Bonds, Series B, 5%, 7/01/35 (c)

 

 

34,550

 

 

33,281,324

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

148,280,668

 











Utilities - 22.8%

 

Emerald Coast, Florida, Utilities Authority, System Revenue Bonds, 5.25%, 1/01/26 (d)(f)

 

 

1,130

 

 

1,148,170

 

 

 

Emerald Coast, Florida, Utilities Authority, System Revenue Bonds, 5.25%, 1/01/36 (d)(f)

 

 

1,560

 

 

1,501,547

 

 

 

Jacksonville, Florida, Water and Sewer Revenue Bonds (United Water Florida Project), AMT, 6.35%, 8/01/25 (c)

 

 

1,500

 

 

1,500,525

 

 

 

Miami Beach, Florida, Stormwater Revenue Bonds, 5.75%, 9/01/16 (d)(f)

 

 

1,630

 

 

1,713,097

 

 

 

Miami Beach, Florida, Stormwater Revenue Bonds, 5.25%, 9/01/20 (d)(f)

 

 

1,000

 

 

1,024,700

 

 

 

Miami Beach, Florida, Stormwater Revenue Bonds, 5.25%, 9/01/25 (d)(f)

 

 

4,400

 

 

4,437,752

 

 

 

Miami Beach, Florida, Stormwater Revenue Bonds, 5.375%, 9/01/30 (d)(f)

 

 

1,910

 

 

1,912,846

 

 

 

Miami Beach, Florida, Water and Sewer Revenue Bonds, 5.625%, 9/01/18 (c)

 

 

2,690

 

 

2,814,520

 

 

 

Miami Beach, Florida, Water and Sewer Revenue Bonds, 5.75%, 9/01/25 (c)

 

 

10,600

 

 

10,877,720

 

 

 

Miami-Dade County, Florida, Solid Waste System Revenue Bonds, 5.50%, 10/01/15 (g)

 

 

2,945

 

 

3,159,219

 

 

 

Miami-Dade County, Florida, Solid Waste System Revenue Bonds, 5.50%, 10/01/16 (g)

 

 

3,105

 

 

3,330,858

 

 

 

Miami-Dade County, Florida, Solid Waste System Revenue Bonds, 5.25%, 10/01/30 (d)

 

 

8,800

 

 

8,743,504

 

 

 

Nassau County, Florida, Water and Sewer System Revenue Bonds, 5.125%, 9/01/33 (d)

 

 

5,175

 

 

4,943,005

 

 

 

Panama City, Florida, Water and Sewer Revenue Bonds, Series B, 5.25%, 10/01/22 (d)

 

 

3,000

 

 

3,045,780

 

 

 

Port St. Lucie, Florida, Utility Revenue Bonds, 5.25%, 9/01/26 (d)

 

 

1,280

 

 

1,289,818

 

 

 

Port St. Lucie, Florida, Utility Revenue Bonds, 5.25%, 9/01/27 (d)

 

 

1,345

 

 

1,348,564

 

 

 

Saint Johns County, Florida, Ponte Vedra Utility System Revenue Bonds, 5%, 10/01/31 (g)

 

 

3,200

 

 

3,140,672

 

 

 

Saint Johns County, Florida, Ponte Vedra Utility System Revenue Bonds, 5%, 10/01/35 (g)

 

 

4,755

 

 

4,576,212

 

5



 

 

BlackRock MuniHoldings Insured Investment Fund

 

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds

 

Par
(000)

 

Value

 









 

 

Saint Johns County, Florida, Ponte Vedra Utility System Revenue Bonds, 5%, 10/01/37 (g)

 

$

8,200

 

$

7,852,238

 

 

 

Saint Lucie, Florida, West Services District, Utility Revenue Bonds, 5.25%, 10/01/34 (d)

 

 

1,720

 

 

1,666,026

 

 

 

Saint Lucie, Florida, West Services District, Utility Revenue Bonds, 5%, 10/01/38 (d)

 

 

4,750

 

 

4,386,293

 

 

 

Saint Lucie, Florida, West Services District, Utility Revenue Refunding Bonds, Senior Lien, 6%, 10/01/22 (d)

 

 

3,250

 

 

3,391,018

 

 

 

Sunrise, Florida, Utility System Revenue Refunding Bonds, 5.20%, 10/01/22 (c)

 

 

2,250

 

 

2,329,448

 

 

 

Tampa Bay, Florida, Water Utility System Revenue Bonds, 6%, 10/01/11 (e)(f)

 

 

30,335

 

 

33,705,219

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

113,838,751

 











 

 

Total Municipal Bonds in Florida

 

 

 

 

 

499,081,717

 











Georgia - 2.5%

 

 

 

 

 

 

 

 

 











Transportation - 1.9%

 

Atlanta, Georgia, Airport Passenger Facility Charge and Subordinate Lien General Revenue Refunding Bonds, Series C, 5%, 1/01/33 (g)

 

 

9,700

 

 

9,646,359

 











Utilities - 0.6%

 

Fulton County, Georgia, Water and Sewer Revenue Bonds, 5.25%, 1/01/35 (d)(f)

 

 

3,000

 

 

3,019,290

 











 

 

Total Municipal Bonds in Georgia

 

 

 

 

 

12,665,649

 











Illinois - 3.1%

 

 

 

 

 

 

 

 

 











Education - 0.8%

 

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

 

 

3,745

 

 

4,142,419

 











Transportation - 1.4%

 

Chicago, Illinois, Transit Authority, Capital Grant Receipts Revenue Bonds (Federal Transit Administration Section 5309 Formula Funds), Series A, 6%, 6/01/26 (a)

 

 

6,315

 

 

7,140,181

 











Utilities - 0.9%

 

Chicago, Illinois, Wastewater Transmission, Revenue Refunding Bonds, Second Lien, 5.50%, 1/01/30 (d)

 

 

4,075

 

 

4,212,490

 











 

 

Total Municipal Bonds in Illinois

 

 

 

 

 

15,495,090

 











Kentucky - 0.9%

 

 

 

 

 

 

 

 

 











State - 0.9%

 

Kentucky State Property and Buildings Commission, Revenue Refunding Bonds (Project Number 93), 5.25%, 2/01/27 (a)

 

 

400

 

 

423,292

 

 

 

Kentucky State Property and Buildings Commission, Revenue Refunding Bonds (Project Number 93), 5.25%, 2/01/28 (a)

 

 

4,000

 

 

4,197,680

 











 

 

Total Municipal Bonds in Kentucky

 

 

 

 

 

4,620,972

 











Louisiana - 1.4%

 

 

 

 

 

 

 

 

 











State - 1.2%

 

Louisiana State Citizens Property Insurance Corporation, Assessment Revenue Bonds, Series C-3, 6.125%, 6/01/25 (a)

 

 

5,475

 

 

5,875,387

 











Transportation - 0.2%

 

New Orleans, Louisiana, Aviation Board Revenue Refunding Bonds, Series A-1, 6%, 1/01/23 (a)

 

 

500

 

 

522,575

 

 

 

New Orleans, Louisiana, Aviation Board Revenue Refunding Bonds, Series A-2, 6%, 1/01/23 (a)

 

 

720

 

 

752,508

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

1,275,083

 











 

 

Total Municipal Bonds in Louisiana

 

 

 

 

 

7,150,470

 











6



 

 

BlackRock MuniHoldings Insured Investment Fund

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds

 

Par
(000)

 

Value

 









Michigan - 9.7%

 

 

 

 

 

 

 

 

 











Health - 1.3%

 

Royal Oak, Michigan, Hospital Finance Authority, Hospital Revenue Refunding Bonds (William Beaumont Hospital), 8.25%, 9/01/39

 

$

5,780

 

$

6,504,350

 











Utilities - 8.4%

 

Detroit, Michigan, Sewage Disposal System, Second Lien Revenue Bonds, Series A, 5.50%, 7/01/36 (b)(f)

 

 

20,540

 

 

20,670,223

 

 

 

Detroit, Michigan, Sewage Disposal System, Second Lien Revenue Bonds, Series B, 5.50%, 7/01/29 (d)(f)

 

 

7,490

 

 

7,268,221

 

 

 

Detroit, Michigan, Sewage Disposal System, Second Lien Revenue Refunding Bonds, Series E, 5.75%, 7/01/31 (b)(f)

 

 

6,000

 

 

6,223,080

 

 

 

Detroit, Michigan, Water Supply System Revenue Bonds, Second Lien, Series B, 6.25%, 7/01/36 (g)

 

 

6,320

 

 

6,667,853

 

 

 

Detroit, Michigan, Water Supply System Revenue Bonds, Second Lien, Series B, 7%, 7/01/36 (g)

 

 

850

 

 

949,059

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

41,778,436

 











 

 

Total Municipal Bonds in Michigan

 

 

 

 

 

48,282,786

 











Minnesota - 2.2%

 

 

 

 

 

 

 

 

 











Health - 2.2%

 

Minneapolis, Minnesota, Health Care System, Revenue Refunding Bonds (Fairview Health Services), Series B, 6.50%, 11/15/38 (a)

 

 

9,900

 

 

10,774,764

 











 

 

Total Municipal Bonds in Minnesota

 

 

 

 

 

10,774,764

 











Nevada - 1.1%

 

 

 

 

 

 

 

 

 











County/City/Special District/School District - 1.1%

 

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

 

 

5,000

 

 

5,289,400

 











 

 

Total Municipal Bonds in Nevada

 

 

 

 

 

5,289,400

 











New Jersey - 2.2%

 

 

 

 

 

 

 

 

 











Health - 1.3%

 

New Jersey Health Care Facilities Financing Authority Revenue Bonds (Virtua Health), 5.50%, 7/01/38 (a)

 

 

6,500

 

 

6,453,005

 











State - 0.9%

 

New Jersey EDA, School Facilities Construction Revenue Bonds, Series Z, 6%, 12/15/34 (a)

 

 

4,350

 

 

4,792,047

 











 

 

Total Municipal Bonds in New Jersey

 

 

 

 

 

11,245,052

 











New York - 5.8%

 

 

 

 

 

 

 

 

 











County/City/Special District/School District - 1.9%

 

New York City, New York, City Transitional Finance Authority, Building Aid Revenue Bonds, Series S-3, 5.25%, 1/15/39

 

 

5,625

 

 

5,508,731

 

 

 

New York City, New York, City Transitional Finance Authority, Building Aid Revenue Bonds, Series S-4, 5.50%, 1/15/29 (a)

 

 

4,000

 

 

4,219,920

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

9,728,651

 











State - 2.8%

 

New York State Dormitory Authority, State Personal Income Tax Revenue Bonds (Education), Series B, 5.25%, 3/15/38

 

 

13,500

 

 

13,799,835

 











Utilities - 1.1%

 

New York City, New York, City Municipal Water Finance Authority, Second General Resolution, Water and Sewer System Revenue Bonds, Series FF-2, 5.50%, 6/15/40

 

 

5,000

 

 

5,257,900

 











 

 

Total Municipal Bonds in New York

 

 

 

 

 

28,786,386

 











7



 

 

BlackRock MuniHoldings Insured Investment Fund

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds

 

Par
(000)

 

Value

 









Puerto Rico - 0.5%

 

 

 

 

 

 

 

 

 











Education - 0.5%

 

Puerto Rico Industrial, Tourist, Educational, Medical and Environmental Control Facilities Revenue Bonds (University Plaza Project), Series A, 5.625%, 7/01/19 (d)

 

$

2,725

 

$

2,728,270

 











 

 

Total Municipal Bonds in Puerto Rico

 

 

 

 

 

2,728,270

 











Texas - 11.7%

 

 

 

 

 

 

 

 

 











County/City/Special District/School District - 0.8%

 

Dallas, Texas, Civic Center Revenue Refunding and Improvement Bonds, 5.25%, 8/15/38 (a)

 

 

4,000

 

 

4,015,360

 











Health - 0.7%

 

Harris County, Texas, Health Facilities Development Corporation, Hospital Revenue Refunding Bonds (Memorial Hermann Healthcare System), Series B, 7.25%, 12/01/35

 

 

1,500

 

 

1,616,310

 

 

 

Tarrant County, Texas, Cultural Education Facilities Financing Corporation, Revenue Refunding Bonds (CHRISTUS Health), Series A, 6.50%, 7/01/37 (a)

 

 

1,770

 

 

1,908,644

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

3,524,954

 











Transportation - 2.8%

 

North Texas Tollway Authority, System Revenue Refunding Bonds, First Tier, Series A, 5.75%, 1/01/40 (a)

 

 

7,000

 

 

7,278,320

 

 

 

North Texas Tollway Authority, System Revenue Refunding Bonds, First Tier, Series K-1, 5.75%, 1/01/38 (a)

 

 

6,400

 

 

6,687,360

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

13,965,680

 











Utilities - 7.4%

 

Houston, Texas, Combined Utility System, First Lien Revenue Refunding Bonds, Series A, 6%, 11/15/35 (a)

 

 

12,700

 

 

13,995,400

 

 

 

Houston, Texas, Combined Utility System, First Lien Revenue Refunding Bonds, Series A, 6%, 11/15/36 (a)

 

 

9,435

 

 

10,388,972

 

 

 

San Antonio, Texas, Electric and Gas Revenue Refunding Bonds, Series A, 5.25%, 2/01/31

 

 

12,025

 

 

12,438,901

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

36,823,273

 











 

 

Total Municipal Bonds in Texas

 

 

 

 

 

58,329,267

 











Virginia - 1.0%

 

Virginia State Public School Authority, Special Obligation School Financing Bonds (Fluvanna County), 6.50%, 12/01/35

 

 

4,300

 

 

4,835,221

 











 

 

Total Municipal Bonds in Virginia

 

 

 

 

 

4,835,221

 











 

 

Total Municipal Bonds - 145.1%

 

 

 

 

 

723,364,261

 











 

 

Municipal Bonds Transferred to
Tender Option Bond Trusts (n)

 

 

 

 

 

 

 











District of Columbia - 0.7%

 

 

 

 

 

 

 

 

 











Utilities - 0.7%

 

District of Columbia, Water and Sewer Authority, Public Utility Revenue Refunding Bonds, Senior Lien, Series A, 6%, 10/01/35

 

 

3,380

 

 

3,645,748

 











Florida - 7.9%

 

 

 

 

 

 

 

 

 











County/City/Special District/School District - 4.1%

 

Jacksonville, Florida, Sales Tax Revenue Bonds, 5%, 10/01/27 (d)

 

 

10,000

 

 

10,092,400

 

 

 

Polk County, Florida, School Board COP, Master Lease, Series A, 5.50%, 1/01/10 (g)

 

 

9,890

 

 

10,116,580

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

20,208,980

 











8


 

 

BlackRock MuniHoldings Insured Investment Fund

 

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 









 

 

Municipal Bonds Transferred to
Tender Option Bond Trusts (n)

 

Par
(000)

 

Value

 









Housing - 2.6%

 

Lee County, Florida, HFA, S/F Mortgage Revenue Bonds (Multi-County Program), AMT, Series A-2, 6%, 9/01/40 (k)(l)(m)

 

$

8,055

 

$

8,719,135

 

 

 

Manatee County, Florida, HFA, Homeowner Revenue Bonds, AMT, Series A, 5.90%, 9/01/40 (k)(l)(m)

 

 

4,353

 

 

4,390,479

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

13,109,614

 











Utilities - 1.2%

 

Jacksonville Electric Authority, Florida, Saint John’s River Power Park System Revenue Bonds, Issue Three, Series 2, 5%, 10/01/37

 

 

6,080

 

 

5,737,088

 











Nevada - 1.7%

 

 

 

 

 

 

 

 

 











Housing - 1.7%

 

Clark County, Nevada, Water Reclamation District, Limited Tax, GO, 6%, 7/01/38

 

 

8,000

 

 

8,548,080

 











 

 

Total Municipal Bonds Transferred to Tender Option Bond Trusts - 10.3%

 

 

 

 

 

51,249,510

 











 

 

Total Long-Term Investments
(Cost - $776,300,429) - 155.4%

 

 

 

 

 

774,613,771

 











 

 

Short-Term Securities

 

 

 

 

 

 

 











California - 2.0%

 

Los Angeles County, California, Metropolitan Transportation Authority, Sales Tax Revenue Refunding Bonds, Proposition C, VRDN, Second Senior Series A, 5.75%, 6/08/09 (d)(o)

 

 

10,000

 

 

10,000,000

 











New York - 5.0%

 

Metropolitan Transportation Authority, New York, Revenue Refunding Bonds, VRDN, Series D-1, 1.50%, 6/08/09 (g)(o)

 

 

24,900

 

 

24,900,000

 











Pennsylvania - 1.4%

 

Philadelphia, Pennsylvania, GO, Refunding, VRDN, Series B, 3.50%, 6/08/09 (g)(o)

 

 

7,000

 

 

7,000,000

 











 

 

 

 

Shares

 

 

 

 










Money Market Funds - 3.1%

 

CMA Florida Municipal Money Fund, 0.04% (p)(q)

 

 

86,404

 

 

86,404

 

 

 

FFI Institutional Tax-Exempt Fund, 0.45% (p)(q)

 

15,100,000

 

 

15,100,000

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

15,186,404

 











 

 

Total Short-Term Securities (Cost - $57,086,404) - 11.5%

 

 

 

 

 

57,086,404

 











 

 

Total Investments (Cost - $833,386,833*) - 169.9%

 

 

 

 

 

831,700,175

 

 

 

Liabilities in Excess of Other Assets - (2.2)%

 

 

 

 

 

(10,926,108

)

 

 

Liability for Trust Certificates, Including Interest Expense and Fees Payable - (5.3)%

 

 

 

 

 

(26,281,956

)

 

 

Preferred Shares, at Redemption Value - (59.4)%

 

 

 

 

 

(296,155,016

)

 

 

 

 

 

 




 

 

Net Assets Applicable to Common Shares - 100.0%

 

 

 

 

$

498,337,095

 

 

 

 

 

 

 





 

 

*

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


 

 

 

 

 

Aggregate cost

 

$

795,149,373

 

 

 




Gross unrealized appreciation

 

$

26,683,484

 

Gross unrealized depreciation

 

 

(16,315,311

)

 

 




Net unrealized appreciation

 

$

10,368,173

 

 

 





 

 

(a)

Assured Guaranty Insured.

 

 

(b)

BHAC Insured.

 

 

(c)

AMBAC Insured.

 

 

(d)

NPFGC Insured.

9


 

BlackRock MuniHoldings Insured Investment Fund

 

Schedule of Investments May 31, 2009 (Unaudited)



 

 

(e)

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.

 

 

(f)

FGIC Insured.

 

 

(g)

FSA Insured.

 

 

(h)

XL Capital Insured.

 

 

(i)

CIFG Insured.

 

 

(j)

FHA Insured.

 

 

(k)

FNMA Collateralized.

 

 

(l)

GNMA Collateralized.

 

 

(m)

FHLMC Collateralized.

 

 

(n)

Security represents a beneficial interest in a trust. The collateral deposited into the trust is federally tax-exempt revenue bonds issued by various state or local governments, or their respective agencies or authorities. The security is subject to remarketing prior to its stated maturity, and is subject to mandatory redemption at maturity.

 

 

(o)

Security may have a maturity of more than one year at time of issuance but has variable rate and demand features that qualify it as a short term security. Rate shown is as of report date and maturity shown is the date the principal owed can be recovered through demand.

 

 

(p)

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

 







CMA Florida Municipal Money Fund

 

 

(1,386,830

)

$

112,978

 

FFI Institutional Tax-Exempt Fund

 

 

15,100,000

 

$

7,361

 










 

 

(q)

Represents the current yield as of report date.

10


 

BlackRock MuniHoldings Insured Investment Fund

 

Schedule of Investments May 31, 2009 (Unaudited)



 

 

 

 

Effective September 1, 2008, the Fund adopted Financial Accounting Standards Board Statement of Financial Accounting Standards No. 157, “Fair Value Measurements” (“FAS 157”). FAS 157 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 semi-annual report.

 

 

 

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


 

 

 

 

 

 






Valuation
Inputs

 

 

Investments in
Securities

 






 

 

Assets

 

 

 



Level 1

 

$

15,186,404

 

Level 2

 

 

816,513,771

 

Level 3

 

 

 






Total

 

$

831,700,175

 

 

 




11


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 Investment Fund

   
 

By:

/s/ Donald C. Burke  
    Donald C. Burke
    Chief Executive Officer of
    BlackRock MuniHoldings Insured Investment Fund
   
  Date: July 15, 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/ Donald C. Burke  
    Donald C. Burke
    Chief Executive Officer (principal executive officer) of
    BlackRock MuniHoldings Insured Investment Fund
   
  Date: July 15, 2009
   
 

By:

/s/ Neal J. Andrews  
    Neal J. Andrews
    Chief Financial Officer (principal financial officer) of
    BlackRock MuniHoldings Insured Investment Fund
   
  Date: July 15, 2009