BlackRock MuniHoldings Investment Quality Fund

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 Investment Quality Fund (MFL)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: John M. Perlowski, Chief Executive Officer, BlackRock MuniHoldings Investment Quality Fund, 55 East 52nd Street, New York, NY 10055

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

Date of fiscal year end: 08/31/2013

Date of reporting period: 11/30/2012


Item 1 – Schedule of Investments


 

 

Schedule of Investments November 30, 2012 (Unaudited)

 

 

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

    

Par

(000)

     Value  

Municipal Bonds

                 

Alabama — 5.1%

     

Auburn University, Refunding RB,
Series A:

     

5.00%, 6/01/29

   $     5,665       $     6,996,615   

5.00%, 6/01/31

     3,250         4,001,432   

Birmingham Special Care Facilities Financing Authority, RB, Children’s Hospital (AGC):

     

6.13%, 6/01/34

     4,980         6,106,376   

6.00%, 6/01/39

     10,995         13,493,944   

Selma IDB, Alabama, RB, International Paper Co., Project, Series A,
5.38%, 12/01/35

     1,745         1,945,850   
                32,544,217   

Arizona — 1.5%

     

Arizona Board of Regents, Refunding RB, Arizona State University System, Series A:

     

5.00%, 6/01/42

     3,000         3,541,860   

5.00%, 7/01/42

     5,000         5,891,450   
                9,433,310   

California — 19.9%

     

California Educational Facilities Authority, RB, University of Southern California, Series A, 5.25%, 10/01/38

     8,920         10,821,209   

California Health Facilities Financing Authority, RB:

     

Stanford Hospital and Clinics, Series A, 5.00%, 8/15/42

     450         519,552   

Stanford Hospital and Clinics, Series A, 5.00%, 8/15/51

     4,690         5,381,071   

Sutter Health, Series B,
6.00%, 8/15/42

     5,370         6,574,598   

California State Public Works Board, RB, Various Capital Projects, Series G-1 (AGC), 5.25%, 10/01/24

     5,000         5,907,150   

City of San Jose California, Refunding ARB, Series A-1, AMT, 5.75%, 3/01/34

     4,450         5,270,624   

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

     5,600         6,617,968   

Los Angeles Community College District California, GO:

     

Election of 2001, Series A (NPFGC), 5.00%, 8/01/32

     10,000         11,538,700   

Election of 2008, Series C,
5.25%, 8/01/39

     3,375         4,216,995   

Los Angeles Department of Water & Power, RB, Power System,
Sub-Series A-1,5.25%, 7/01/38

     5,000         5,953,750   

Los Angeles Municipal Improvement Corp., Refunding RB, Real Property, Series B (AGC), 5.50%, 4/01/39

     2,980         3,414,246   
    

Par

(000)

     Value  

Municipal Bonds

                 

California (concluded)

     

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

   $     3,485       $ 4,285,853   

Manteca Financing Authority California, RB, Manteca Sewer (AGC):

     

5.63%, 12/01/33

     2,450         2,882,254   

5.75%, 12/01/36

     3,285         3,865,394   

Redondo Beach Unified School District, GO, Election of 2008, Series E, 5.50%, 8/01/34

     4,110         5,015,392   

San Bernardino Community College District, GO, Election of 2002,
Series A, 6.25%, 8/01/33

     3,820         4,640,230   

San Diego Public Facilities Financing Authority, Refunding RB, Series B (AGC), 5.38%, 8/01/34

     4,690         5,608,865   

State of California, GO, Various Purpose (AGC), 5.50%, 11/01/39

     15,000         17,969,100   

State of California, GO, Refunding, Various Purpose, 5.00%, 9/01/41

     10,345         11,944,130   

University of California, Refunding RB, Limited Project, Series G,
5.00%, 5/15/37

     3,020         3,618,655   
                126,045,736   

Colorado — 1.7%

     

City & County of Denver Colorado, Refunding RB, Airport System, Series B, 5.00%, 11/15/37

     2,800         3,271,072   

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

     5,925         7,178,197   
                10,449,269   

District of Columbia — 0.2%

     

District of Columbia Water & Sewer Authority, Refunding RB, Series A (NPFGC), 5.00%, 10/01/38

     1,000         1,154,700   

Florida — 5.7%

     

City of Jacksonville Florida, Refunding RB, Sales Tax Revenue, Better Jacksonville, Series A,
5.00%, 10/01/30

     3,500         4,197,900   

County of Lee Florida, Refunding ARB, Series A, AMT, 5.38%, 10/01/32

     4,600         5,210,972   

County of Miami-Dade Florida, RB, Miami International Airport, Series A, AMT (NPFGC), 6.00%, 10/01/29

     8,000         8,020,480   

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

     3,500         3,889,865   

Florida Housing Finance Corp., RB, Waverly Apartments, Series C-1, AMT (AGM), 6.30%, 7/01/30

     2,055         2,059,315   
 

 

                 
      BLACKROCK MUNIHOLDINGS INVESTMENT QUALITY FUND       NOVEMBER 30, 2012    1      


 

 

Schedule of Investments (continued)

 

 

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

    

Par

(000)

     Value  

Municipal Bonds

                 

Florida (concluded)

     

Florida Housing Finance Corp., Refunding RB, AMT (NPFGC) Homeowner Mortgage, Series 2:

     

5.75%, 7/01/14

   $ 260       $ 260,793   

5.90%, 7/01/29

     5,225         5,283,311   

Jacksonville Florida Port Authority, Refunding RB, AMT,
5.00%, 11/01/38

     3,880         4,315,957   

Manatee County Housing Finance Authority, RB, Series A, AMT (Ginnie Mae), 5.90%, 9/01/40

     725         795,369   

Miami-Dade County Housing Finance Authority Florida, RB, Marbrisa Apartments Project, Series 2A, AMT (AGM), 6.00%, 8/01/26

     2,185         2,189,632   
                36,223,594   

Illinois — 17.2%

     

Chicago Illinois Board of Education, GO, Series A:

     

5.50%, 12/01/39

     6,370         7,640,496   

5.00%, 12/01/42

     8,750         9,896,950   

Chicago Illinois Board of Education, GO, Refunding, Chicago School Reform Board (NPFGC),
5.50%, 12/01/26

     1,620         2,087,451   

Chicago Transit Authority, RB:

     

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

     6,315         7,494,768   

Sales Tax Receipts Revenue, 5.25%, 12/01/36

     1,960         2,307,371   

Sales Tax Receipts Revenue, 5.25%, 12/01/40

     5,515         6,482,883   

City of Chicago Illinois, ARB, O’Hare International Airport, General, Third Lien:

     

Series A, 5.75%, 1/01/39

     7,395         8,921,994   

Series C, 6.50%, 1/01/41

     16,800         22,007,832   

City of Chicago Illinois, Refunding RB, Sales Tax Revenue, Series A, 5.25%, 1/01/38

     2,445         2,907,447   

Cook County Forest Preserve District, GO:

     1,790         2,114,438   

Series C, 5.00%, 12/15/32

     

Refunding, Limited Tax Project, Series B, 5.00%, 12/15/32

     840         992,250   

Illinois Finance Authority, RB:

     

Carle Foundation, Series A, 6.00%, 8/15/41

     4,000         4,903,120   

University of Chicago, Series B, 5.50%, 7/01/37

     10,000         12,255,800   
    

Par

(000)

     Value  

Municipal Bonds

                 

Illinois (concluded)

     

Metropolitan Pier & Exposition Authority, Refunding RB, McCormick Place Expansion Project, Series B,
5.00%, 12/15/28

   $ 4,645       $ 5,594,670   

Railsplitter Tobacco Settlement Authority, RB:

     

5.50%, 6/01/23

     4,365         5,329,796   

6.00%, 6/01/28

     1,245         1,531,885   

State of Illinois, RB, Build Illinois,
Series B, 5.25%, 6/15/26

     5,625         6,708,881   
                109,178,032   

Indiana — 3.3%

     

Indiana Finance Authority Waste Water Utility, RB, First Lien, CWA Authority, Series A, 5.00%, 10/01/41

     4,080         4,729,699   

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

     14,105         16,298,892   
                21,028,591   

Kansas — 1.4%

     

Kansas Development Finance Authority, Refunding RB, Adventist Health Sunbelt Obligation Group, Series A, 5.00%, 11/15/32

     7,290         8,634,495   

Louisiana — 0.2%

     

New Orleans Aviation Board Louisiana, Refunding GARB, Restructuring (AGC):

     

Series A-1, 6.00%, 1/01/23

     500         607,345   

Series A-2, 6.00%, 1/01/23

     720         874,577   
                1,481,922   

Massachusetts — 0.4%

     

Massachusetts Development Finance Agency, RB, Wellesley College, Series J, 5.00%, 7/01/42

     2,090         2,517,071   

Michigan — 5.9%

     

City of Detroit Michigan, RB, Second Lien, Series B (AGM),
6.25%, 7/01/36

     6,320         7,489,263   

City of Detroit Michigan, Refunding RB, Sewage Disposal System, Senior Lien (AGM):

     

Series B, 7.50%, 7/01/33

     2,780         3,545,417   

Series C-1, 7.00%, 7/01/27

     9,055         11,477,212   

Hudsonville Public Schools, GO, School Building & Site (Q-SBLF),
5.25%, 5/01/41

     6,015         6,986,062   

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

     5,780         7,528,508   
                37,026,462   
 

 

                 
      BLACKROCK MUNIHOLDINGS INVESTMENT QUALITY FUND       NOVEMBER 30, 2012    2      


 

 

Schedule of Investments (continued)

 

 

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

    

Par

(000)

     Value  

Municipal Bonds

                 

Minnesota — 2.0%

     

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

   $     9,900       $     12,447,567   

Mississippi — 2.2%

     

Medical Center Educational Building Corp., RB, University of Mississippi Medical Center Facilities Expansion & Renovation Project,
Series A, 5.00%, 6/01/41

     2,830         3,307,732   

Mississippi Development Bank, Refunding RB, City of Jacksonville Mississippi Water & Sewer System Project, Special Obligation,
Series A (AGM), 5.00%, 9/01/30

     9,030         10,817,128   
                14,124,860   

Nevada — 4.0%

     

Clark County Water Reclamation District, GO, Series A, 5.25%, 7/01/34

     5,850         7,220,772   

County of Clark Nevada, RB: Las Vegas-McCarran International Airport, Series A (AGC),
5.25%, 7/01/39

     11,175         12,853,709   

Subordinate Lien, Series A-2 (NPFGC),

     

5.00%, 7/01/36

     4,965         5,223,875   
                25,298,356   

New Jersey — 3.6%

     

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

     6,500         7,393,685   

New Jersey Higher Education Student Assistance Authority, Refunding RB,
Series 1, AMT, 5.75%, 12/01/28

     4,475         5,183,124   

New Jersey Transportation Trust Fund Authority, RB, Transportation System:

     

Series A, 5.50%, 6/15/41

     5,410         6,531,060   

Series B, 5.25%, 6/15/36

     2,960         3,519,884   
                22,627,753   

New York — 11.6%

     

Metropolitan Transportation Authority, Refunding RB, Transportation,
Series C, 5.00%, 11/15/28

     5,500         6,673,040   

New York City Municipal Water Finance Authority, Refunding RB, Second General Resolution:

     

Fiscal 2009, Series EE,
5.25%, 6/15/40

     7,500         8,943,450   

Series FF-2, 5.50%, 6/15/40

     4,000         4,931,680   
    

Par

(000)

     Value  

Municipal Bonds

                 

New York (concluded)

     

New York City Municipal Water Finance Authority, Refunding RB, Second General Resolution (concluded):

     

Water & Sewer System, Fiscal 2011, Series EE,
5.38%, 6/15/43

   $     3,475       $     4,277,690   

New York City Transitional Finance Authority, RB:

     

Fiscal 2009, Series S-4 (AGC), 5.50%, 1/15/29

     4,000         4,857,160   

Future Tax Secured,
Sub-Series E-1, 5.00%, 2/01/42

     7,210         8,555,170   

Sub-Series S-2A, 5.00%, 7/15/30

     7,110         8,573,024   

New York State Dormitory Authority, RB, General Purpose, Series B:

     

5.00%, 3/15/37

     9,900         11,804,661   

5.00%, 3/15/42

     9,655         11,477,478   

New York State Thruway Authority, Refunding RB, General, Series I, 5.00%, 1/01/37

     2,890         3,404,507   
                73,497,860   

North Carolina — 1.2%

     

North Carolina Medical Care Commission, RB, Health Care Facilities, Duke University Health System, Series A, 5.00%, 6/01/32

     6,305         7,513,290   

Pennsylvania — 4.6%

     

Berks County Municipal Authority, Refunding RB, Reading Hospital & Medical Center, Series A,
5.00%, 11/01/40

     4,425         5,041,181   

Pennsylvania Higher Educational Facilities Authority, RB, 5.00%, 4/01/42

     9,325         10,849,917   

Pennsylvania Turnpike Commission, RB:

     

Motor License Fund- Enhanced Subordinate Special,
5.00%, 12/01/42

     6,480         7,537,990   

Sub-Series A, 6.00%, 12/01/41

     4,945         5,661,728   
                29,090,816   

Puerto Rico — 1.2%

     

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

     6,610         7,705,607   

Texas — 19.3%

     

City of Houston Texas, Refunding RB, Combined First Lien, Series A (AGC):

     

6.00%, 11/15/35

     12,700         15,833,090   

6.00%, 11/15/36

     9,435         11,827,716   
 

 

                 
      BLACKROCK MUNIHOLDINGS INVESTMENT QUALITY FUND       NOVEMBER 30, 2012    3      


 

 

Schedule of Investments (continued)

 

 

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

    

Par

(000)

     Value  

Municipal Bonds

                 

Texas (concluded)

     

City of Houston Texas, Refunding RB, Combined First Lien, Series A (AGC) (concluded):

     

5.38%, 11/15/38

   $ 5,000       $ 6,027,650   

Dallas Area Rapid Transit, Refunding RB, Senior Lien, 5.25%, 12/01/38

     9,110         10,805,189   

Dallas/Fort Worth International Airport, Joint RB, Series H,
5.00%, 11/01/42 (a)

     10,425         11,546,522   

Dallas/Fort Worth International Airport, Joint Refunding RB, Series F, AMT, 5.00%, 11/01/35

     10,000         11,153,900   

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

     1,500         1,901,565   

Katy ISD Texas, GO, Refunding, School Building, Series A, (PSF-GTD), 5.00%, 2/15/42

     3,505         4,180,273   

North Texas Tollway Authority, RB, Special Projects System, Series A, 5.50%, 9/01/41

     3,500         4,268,390   

North Texas Tollway Authority System, First Tier, Refunding RB::

     

(AGM), 6.00%, 1/01/43

     5,555         6,819,651   

Series B, 5.00%, 1/01/42

     2,600         2,979,652   

Series K-1 (AGC),

     

5.75%, 1/01/38

     12,150         14,135,188   

Tarrant County Cultural Education Facilities Finance Corp., Refunding RB, Christus Health, Series A (AGC), 6.50%, 7/01/37

     1,770         2,140,691   

Texas State Turnpike Authority, RB, Central Texas Turnpike System, First Tier, Series A (AMBAC), 5.00%, 8/15/42

     4,165         4,181,410   

Texas Tech University, Refunding RB, Improvement Bonds, 14th Series A, 5.00%, 8/15/32

     1,500         1,816,590   

Texas Transportation Commission, Refunding RB, Central Texas Turnpike System, First Tier,
Series A, 5.00%, 8/15/41

     2,070         2,345,476   

University of Texas System, Refunding RB, Financing System, Series B, 5.00%, 8/15/43

     8,495         10,339,859   
                122,302,812   

Utah — 1.8%

     

Utah Transit Authority, Refunding RB, Subordinated Sales Tax,
5.00%, 6/15/42

     9,910         11,517,105   

Virginia — 2.5%

     

Fairfax County IDA, RB, Health Care, Inova Health System Project,
Series A, 5.00%, 5/15/40

     3,230         3,744,087   
    

Par

(000)

     Value  

Municipal Bonds

                 

Virginia (concluded)

     

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

   $     4,300       $ 5,436,662   

Virginia Resources Authority, RB,
Series A-1, 5.00%, 11/01/42

     5,770         6,940,271   
                16,121,020   

Washington — 1.8%

     

City of Seattle Washington, Refunding RB, Series A, 5.25%, 2/01/36

     4,200         5,034,792   

State of Washington, GO, Various Purpose, Series B, 5.25%, 2/01/36

     3,290         4,011,727   

Washington Higher Education Facilities Authority, Refunding RB, The University of Puget Sound Project, Series A, 5.00%, 10/01/42

     2,000         2,294,380   
                11,340,899   

Wisconsin — 1.3%

     

Wisconsin Health & Educational Facilities Authority, RB, Ascension Health, Series D, 5.00%, 11/15/41

     5,800         6,636,650   

Wisconsin Health & Educational Facilities Authority, Refunding RB, Froedtert Health, Inc., Series A, 5.00%, 4/01/42

     1,470         1,693,058   
                8,329,708   

Total Municipal Bonds – 119.6%

              757,635,052   
     
     

Municipal Bonds Transferred to

Tender Option Bond (TOB) Trusts (b)

  

  

Alabama — 1.1%

     

Mobile Board of Water & Sewer Commissioners, RB (NPFGC),
5.00%, 1/01/31

     6,500         7,115,420   

California — 1.9%

     

California State University, Refunding RB, Systemwide, Series A (AGM),
5.00%, 11/01/32

     7,960         9,126,140   

Los Angeles Unified School District California, GO, Series I,
5.00%, 1/01/34

     2,400         2,799,816   
                11,925,956   

District of Columbia — 0.7%

     

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

     3,381         4,197,465   

Florida — 3.0%

     

County of Miami-Dade Florida, Refunding RB, Transit System, Sales Surtax, 5.00%, 7/01/42

     3,060         3,558,199   
 

 

                 
      BLACKROCK MUNIHOLDINGS INVESTMENT QUALITY FUND       NOVEMBER 30, 2012    4      


 

 

Schedule of Investments (continued)

 

 

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

    

Par

(000)

     Value  

Municipal Bonds Transferred to

Tender Option Bond (TOB) Trusts (b)

  

  

Florida (concluded)

     

Hillsborough County Aviation Authority, RB, Series A, AMT (AGC),
5.50%, 10/01/38

   $     10,657       $     11,838,367   

Lee County Housing Finance Authority, RB, Multi-County Program, Series A-2, AMT
(Ginnie Mae), 6.00%, 9/01/40

     3,120         3,311,131   
                18,707,697   

Illinois — 2.2%

     

Chicago Transit Authority, Refunding RB, Federal Transit Administration Section 5309 (AGM),
5.00%, 6/01/28

     7,737         8,731,811   

City of Chicago Illinois, Refunding RB, Second Lien, Water Project, 5.00%, 11/01/42

     4,358         5,117,436   
                13,849,247   

Indiana — 1.7%

     

Indiana Health & Educational Facilities Financing Authority, Refunding RB, St. Francis, Series E (AGM), 5.25%, 5/15/41

     9,850         10,816,285   

Kentucky — 0.1%

     

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

     404         476,133   

Massachusetts — 1.8%

     

Massachusetts School Building Authority, Sales Tax RB,
Senior-Series B, 5.00%, 10/15/41

     9,440         11,291,090   

Nevada — 2.5%

     

Clark County Water Reclamation District, GO:

     

Limited Tax, 6.00%, 7/01/38

     8,000         9,897,840   

Series B, 5.50%, 7/01/29

     5,008         6,257,061   
                16,154,901   

New Jersey — 3.6%

     

New Jersey EDA, RB, School Facilities Construction, Series Z (AGC), 6.00%, 12/15/34

     4,350         5,310,611   

New Jersey State Housing & Mortgage Finance Agency, RB, S/F Housing, Series CC, 5.25%, 10/01/29

     7,402         8,319,679   

New Jersey Transportation Trust Fund Authority, RB, Transportation System, Series A (AGM),
5.00%, 12/15/32

     8,000         9,229,440   
                22,859,730   

New York — 13.7%

     

Hudson New York Yards Infrastructure Corp., RB, Series A,
5.75%, 2/15/47

     9,249         11,235,193   
    

Par

(000)

     Value  

Municipal Bonds Transferred to

Tender Option Bond (TOB) Trusts (b)

  

  

New York (concluded)

     

New York City Municipal Water Finance Authority, Refunding RB:

     

Series FF, 5.00%, 6/15/45

   $     11,236       $ 13,252,516   

Series FF-2, 5.50%, 6/15/40

     4,994         6,157,050   

New York City Transitional Finance Authority, RB:

     

Fiscal 2009, Series S-3, 5.25%, 1/15/39

     5,619         6,446,420   

Future Tax Secured,
Sub-Series E1, 5.00%, 2/01/42

     5,439         6,453,680   

New York Liberty Development Corp., RB, World Trade Center Port Authority, Series 1,
5.25%, 12/15/43

     13,950         16,576,985   

New York Liberty Development Corp., Refunding RB, 4 World Trade Center Project,
5.75%, 11/15/51

     8,200         10,031,962   

New York State Dormitory Authority, ERB, Short Term Personal Income, Tax Revenue Education, Series B,
5.25%, 3/15/38

     13,500         16,546,545   
                86,700,351   

Puerto Rico — 1.0%

     

Puerto Rico Sales Tax Financing Corp., Sales Tax, Refunding RB, Series C, 5.25%, 8/01/40

     5,590         6,289,253   

Texas — 6.3%

     

City of San Antonio Texas, Refunding RB, Series A,
5.25%, 2/01/31 (c)

     12,027         14,643,509   

North Texas Tollway Authority, RB, Special Projects System,
Series A, 5.50%, 9/01/41

     9,640         11,756,366   

Waco Educational Finance Corp., Refunding RB, Baylor University, 5.00%, 3/01/43

     11,250         13,274,775   
                39,674,650   

Utah — 1.1%

     

City of Riverton Utah Hospital, RB, IHC Health Services, Inc., 5.00%, 8/15/41

     6,373         7,113,777   

Washington — 1.6%

     

University of Washington, Refunding RB, Series A,
5.00%, 7/01/41

     8,698         10,459,285   

Total Municipal Bonds Transferred to Tender

Option Bond (TOB) Trusts – 42.3%

  

  

     267,631,240   

Total Long-Term Investments

(Cost – $907,880,254) – 161.9%

              1,025,266,292   
 

 

                 
      BLACKROCK MUNIHOLDINGS INVESTMENT QUALITY FUND       NOVEMBER 30, 2012    5      


 

 

Schedule of Investments (continued)

 

 

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

     

Par

(000)

     Value  

Short-Term Securities

                 

Alabama — 0.00%

     

Eutaw Industrial Development Board, Refunding RB, VRDN, Alabama Power Co. Project, 0.17%,
1/08/13 (d)

   $ 200       $ 200,000   
     Shares         

Money Market Funds — 2.1%

  

  

FFI Institutional Tax-Exempt Fund, 0.01%(e)(f)

     13,397,263         13,397,263   

Total Short-Term Securities

(Cost – $13,597,263) – 2.1%

  

  

     13,597,263   

Total Investments

(Cost - $921,477,517*) – 164.0%

  

  

     1,038,863,555   

Other Assets Less Liabilities – 0.1%

  

     531,808   

Liability for TOB Trust Certificates, Including Interest Expense and Fees
Payable – (20.7)%

    

     (131,421,793

VRDP Shares, at Liquidation Value – (43.4)%

  

     (274,600,000

Net Assets Applicable to Common
Shares – 100.0%

   

   $ 633,373,570   

    

                 
* As of November 30, 2012, gross unrealized appreciation and gross unrealized depreciation based on cost for federal income tax purposes were as follows:

Tax cost

   $     791,313,443   
  

 

 

 

Gross unrealized appreciation

   $ 117,386,044   

Gross unrealized depreciation

     (1,158,631
  

 

 

 

Net unrealized appreciation

   $ 116,227,413   
  

 

 

 

 

(a) When-issued security. Unsettled when-issued transactions were as follows:

 

Counterparty    Value      Unrealized
Appreciation
 

Merill Lynch Pierce

   $     11,546,522       $     93,304   

 

 

(b) Securities represent bonds transferred to a TOB in exchange for which the Fund acquired residual interest certificates. These securities serve as collateral in a financing transaction.
(c) All or a portion of security is subject to a recourse agreement which may require the Fund to pay the Liquidity Provider in the event there is a shortfall between the TOB Trust Certificates and proceeds received from the sale of the security contributed to the TOB trust. In the case of a shortfall, the aggregate maximum potential amount the Fund could ultimately be required to pay under the agreements is $9,707,818.
(d) Variable rate security. Rate shown is as of report date and maturity shown is the date the principal owed can be recovered through demand.
(e) Investments in issuers considered to be an affiliate of the Fund during the period ended November 30, 2012, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

 

Affiliate    Shares
Held at
August 31,
2012
    

Net

Activity

    

Shares

Held at
November 30,
2012

     Income  

FFI Institutional Tax-Exempt Fund

     687,432         12,709,831         13,397,263       $     779   

 

(f) Represents the current yield as of report date.

 

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.

AGM

  Assured Guaranty Municipal Corp.

AMBAC

  American Municipal Bond Assurance Corp.

AMT

  Alternative Minimum Tax (subject to)

ARB

  Airport Revenue Bonds

EDA

  Economic Development Authority

ERB

  Education Revenue Bonds

GARB

  General Airport Revenue Bonds

Ginnie Mae

  Government National Mortgage Association

GO

  General Obligation Bonds

IDA

  Industrial Development Authority

IDB

  Industrial Development Board

ISD

  Independent School District

NPFGC

  National Public Finance Guarantee Corp.

PSF-GTD

  Permanent School Fund Guaranteed

Q-SBLF

  Qualified School Bond Loan Fund

RB

  Revenue Bonds

S/F

  Single-Family

VRDN

  Variable Rate Demand Notes
 

 

                 
      BLACKROCK MUNIHOLDINGS INVESTMENT QUALITY FUND       NOVEMBER 30, 2012    6      


 

 

Schedule of Investments (concluded)

 

 

BlackRock MuniHoldings Investment Quality Fund (MFL)

 

 

Fair Value Measurements - Various inputs are used in determining the fair value of investments. These inputs to valuation techniques are categorized into a disclosure hierarchy consisting of three broad levels for financial reporting purposes as follows:

 

   

Level 1 — unadjusted price quotations in active markets/exchanges for identical assets and liabilities that the Fund has the ability to access

 

   

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 hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the level in the fair value hierarchy within which the fair value measurement falls in its entirety is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

Changes in valuation techniques may result in transfers into or out of an assigned level within the disclosure hierarchy. In accordance with the Fund’s policy, transfers between different levels of the fair value disclosure hierarchy are deemed to have occurred as of the beginning of the reporting period. The categorization of a value determined for investments is based on the pricing transparency of the investment and is not necessarily an indication of the risks 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 Fund’s investments categorized in the disclosure hierarchy as of November 30, 2012:

      Level 1      Level 2      Level 3      Total  

Assets:

           

Investments:

           

Long-Term Investments1

           $ 1,025,266,292               $ 1,025,266,292   

Short-Term Securities

   $ 13,397,263         200,000                 13,597,263   

Total

   $ 13,397,263       $ 1,025,466,292               $ 1,038,863,555   

1 See above Schedule of Investments for values in each state or political sub-division.

Certain of the Fund’s liabilities are held at carrying amount, which approximates fair value for financial reporting purposes. As of November 30, 2012, such liabilities are categorized within the disclosure hierarchy as follows:

 

 
     Level 1         Level 2         Level 3         Total   

 

 

Liabilities:

           

TOB trust certificates

           $ (131,322,699)               $ (131,322,699)   

VRDP Shares

             (274,600,000)                 (274,600,000)   
  

 

 

 

Total

           $ (405,922,699)               $ (405,922,699)   
  

 

 

 

There were no transfers between levels during the period ended November 30, 2012.

 

 

                 
      BLACKROCK MUNIHOLDINGS INVESTMENT QUALITY FUND       NOVEMBER 30, 2012    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 13a-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 Investment Quality Fund

 

By:   

/s/ John M. Perlowski

  
   John M. Perlowski   
   Chief Executive Officer (principal executive officer) of   
   BlackRock MuniHoldings Investment Quality Fund   

Date: January 23, 2013

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/ John M. Perlowski

  
   John M. Perlowski   
   Chief Executive Officer (principal executive officer) of   
   BlackRock MuniHoldings Investment Quality Fund   
Date: January 23, 2013   
By:   

/s/ Neal J. Andrews

  
   Neal J. Andrews   
   Chief Financial Officer (principal financial officer) of   
   BlackRock MuniHoldings Investment Quality Fund   
Date: January 23, 2013