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: 08/31/2018

Date of reporting period: 11/30/2017


Item 1 – Schedule of Investments


Schedule of Investments  (unaudited)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  

Municipal Bonds — 126.3%

 

Alabama — 3.4%  

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

   

6.00%, 06/01/19

  $ 10,995     $ 11,708,685  

6.13%, 06/01/19

    4,980       5,312,365  

City of Selma Alabama IDB, RB, Gulf Opportunity Zone, International Paper Co. Project, Series A, 5.38%, 12/01/35

    1,745       1,948,537  
   

 

 

 
      18,969,587  
Arizona — 1.5%            

County of Maricopa Arizona IDA, RB, Banner Health, Series A, 5.00%, 01/01/41

    3,750       4,348,350  

Salt River Project Agricultural Improvement & Power District, Refunding RB, Series A, 5.00%, 01/01/38

    900       1,056,897  

University of Arizona Board of Regents, Refunding RB, Series A, 5.00%, 06/01/40

    2,300       2,639,825  
   

 

 

 
      8,045,072  
California — 24.2%            

California Educational Facilities Authority, RB, University of Southern California, Series A, 5.25%, 10/01/18(a)

    4,000       4,130,840  

California Health Facilities Financing Authority, RB, Sutter Health, Series B, 6.00%, 08/15/42

    5,370       6,022,992  

City & County of San Francisco California Airports Commission, Refunding ARB, AMT, Series A:

   

2nd, 5.50%, 05/01/28

    3,330       3,896,633  

2nd, 5.25%, 05/01/33

    2,600       2,972,268  

5.00%, 05/01/44

    3,430       3,856,932  

City of Los Angeles California Department of Airports, ARB:

   

Sub-Series A, AMT, 5.00%, 05/15/42

    4,500       5,231,520  

Sub-Series B, 5.00%, 05/15/42

    2,500       2,937,850  

Subordinate, Los Angeles International Airport, Series B, AMT, 5.00%, 05/15/46

    4,000       4,580,120  

City of Los Angeles California Department of Water & Power, RB, Power System, Sub-Series A-1, 5.25%, 07/01/38

    5,000       5,115,650  

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

   

5.63%, 12/01/33

    2,450       2,642,031  
Security   Par
(000)
    Value  
California (continued)  

City of Manteca California Financing Authority, RB, Manteca Sewer (AGC) (continued):

   

5.75%, 12/01/36

  $ 3,285     $ 3,547,800  

City of San Jose California, Refunding ARB, Norman Y Mineta San Jose International Airport SJC, Series A-1, AMT, 5.75%, 03/01/34

    4,450       4,950,358  

County of Sacramento California, ARB, Senior Series A (AGC), 5.50%, 07/01/18(a)

    5,600       5,736,528  

Irvine Ranch Water District, Special Assessment Bonds, 5.25%, 02/01/46

    7,000       8,399,580  

Kern Community College District, GO, Safety, Repair & Improvement, Series C, 5.50%, 11/01/33

    4,365       5,225,734  

Metropolitan Water District of Southern California, Refunding RB, Series A, 5.00%, 07/01/32

    5,625       6,710,906  

Redondo Beach Unified School District, GO, Election of 2008, Series E, 5.50%, 08/01/21(a)

    3,110       3,541,637  

San Diego Public Facilities Financing Authority Water, Refunding RB, Series B (AGC), 5.38%, 08/01/19(a)

    2,000       2,124,380  

Santa Clara Unified School District, GO, Refunding, 3.00%, 07/01/36

    5,580       5,378,953  

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

    15,000       16,127,400  

State of California Public Works Board, LRB, Various Capital Projects, Series I:

   

5.50%, 11/01/30

    4,500       5,312,970  

5.50%, 11/01/31

    2,615       3,082,667  

5.50%, 11/01/33

    2,000       2,345,600  

State of California Public Works Board, RB, Department of Corrections & Rehabilitation, Series F, 5.25%, 09/01/33

    3,240       3,741,811  

Township of Washington California Health Care District, GO, Election of 2004, Series B, 5.50%, 08/01/40

    1,685       2,005,757  

University of California, Refunding RB, The Regents of Medical Center,
Series J, 5.25%, 05/15/38

    12,250       14,217,227  
   

 

 

 
      133,836,144  
Colorado — 2.2%            

City & County of Denver Colorado Airport System, ARB, Series A, AMT:

   

5.50%, 11/15/28

    2,700       3,132,054  

5.50%, 11/15/30

    1,040       1,198,985  

5.50%, 11/15/31

    1,250       1,437,388  
 

 

 

SCHEDULES OF INVESTMENTS      1  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Colorado (continued)  

Colorado Health Facilities Authority, RB, Hospital, NCMC, Inc. Project, Series B (AGM), 6.00%, 05/15/19(a)

  $ 5,925     $ 6,289,387  
   

 

 

 
      12,057,814  
District of Columbia — 0.6%            

District of Columbia Water & Sewer Authority, Refunding RB, Series A, 6.00%, 10/01/18(a)

    3,000       3,115,770  
   

 

 

 
Florida — 7.3%            

City of Jacksonville Florida, Refunding RB, Series A, 5.25%, 10/01/33

    1,250       1,438,875  

County of Hillsborough Florida Aviation Authority, Refunding ARB, Tampa International Airport, Series A, AMT:

   

5.50%, 10/01/29

    5,360       6,201,252  

5.25%, 10/01/30

    3,255       3,710,798  

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

    7,100       7,850,754  

County of Lee Florida HFA, RB, S/F Housing, Multi-County Program, Series A-2, AMT (Ginnie Mae), 6.00%, 09/01/40

    420       423,637  

County of Manatee Florida HFA, RB, S/F Housing, Series A, AMT (Ginnie Mae, Fannie Mae & Freddie Mac), 5.90%, 09/01/40

    220       223,247  

County of Miami-Dade Florida, RB, Seaport Department:

   

Series A, 5.38%, 10/01/33

    3,145       3,557,498  

Series B, AMT, 6.25%, 10/01/38

    1,405       1,671,276  

Series B, AMT, 6.00%, 10/01/42

    1,885       2,189,446  

County of Miami-Dade Florida, Refunding RB, Water & Sewer System, Series B, 5.25%, 10/01/29

    2,870       3,335,801  

County of Miami-Dade Florida Aviation, Refunding ARB, Series A, AMT, 5.00%, 10/01/31

    5,465       6,063,800  

Reedy Creek Florida Improvement District, GO, Series A, 5.25%, 06/01/32

    3,225       3,720,360  
   

 

 

 
      40,386,744  
Hawaii — 2.0%            

State of Hawaii, Department of Transportation, COP, AMT:

   

5.25%, 08/01/25

    1,350       1,520,411  

5.25%, 08/01/26

    2,500       2,803,075  
Security   Par
(000)
    Value  
Hawaii (continued)  

State of Hawaii, Department of Transportation, RB, Series A, AMT, 5.00%, 07/01/45

  $ 5,985     $ 6,743,060  
   

 

 

 
      11,066,546  
Illinois — 18.2%  

City of Chicago Illinois Midway International Airport, Refunding ARB, 2nd Lien,
Series A, AMT:

   

5.50%, 01/01/30

    6,500       7,387,315  

5.50%, 01/01/32

    6,275       7,096,586  

City of Chicago Illinois Midway International Airport, Refunding GARB, 2nd Lien, Series A, AMT, 5.00%, 01/01/41

    8,020       8,871,724  

City of Chicago Illinois O’Hare International Airport, ARB, Senior Lien, Series D, 5.25%, 01/01/42

    2,630       3,106,188  

City of Chicago Illinois O’Hare International Airport, GARB, 3rd Lien:

   

Series A, 5.75%, 01/01/21(a)

    6,210       6,960,292  

Series A, 5.75%, 01/01/39

    1,185       1,313,122  

Series C, 6.50%, 01/01/21(a)

    16,800       19,205,760  

City of Chicago Illinois O’Hare International Airport, Refunding ARB, Series C,
5.00%, 01/01/37

    1,000       1,136,320  

City of Chicago Illinois Transit Authority, RB:

   

Federal Transit Administration, Section 5309, Series A (AGC), 6.00%, 12/01/18(a)

    6,000       6,278,160  

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

    10,960       11,748,901  

City of Chicago Illinois Transit Authority, Refunding RB, Federal Transit Administration, Section 5309 (AGM), 5.00%, 06/01/28

    7,735       8,124,612  

Illinois Finance Authority, RB, Carle Foundation, Series A, 6.00%, 08/15/41

    4,000       4,515,800  

Railsplitter Tobacco Settlement Authority, RB:

   

5.50%, 06/01/23

    4,365       4,924,986  

6.00%, 06/01/28

    1,245       1,399,591  
 

 

 

2    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Illinois (continued)  

State of Illinois Finance Authority, RB, University of Chicago, Series B, 5.50%, 07/01/18(a)

  $ 8,000     $ 8,191,280  
   

 

 

 
      100,260,637  
Indiana — 4.2%  

Indiana Finance Authority, Refunding RB, Stadium Project, Series A, 5.25%, 02/01/37

    3,130       3,659,878  

Indiana Municipal Power Agency, Refunding RB, Series A(a):

   

5.25%, 07/01/23

    1,500       1,768,080  

5.25%, 07/01/23

    1,500       1,768,080  

Indianapolis Local Public Improvement Bond Bank, Refunding RB, Waterworks Project, Series A (AGC):

   

5.50%, 01/01/19(a)

    2,760       2,876,362  

5.50%, 01/01/38

    11,345       11,802,090  

State of Indiana Finance Authority, RB, Private Activity Bond, Ohio River Bridges, Series A, AMT, 5.00%, 07/01/40

    1,240       1,339,299  
   

 

 

 
      23,213,789  
Kansas — 0.9%  

County of Wyandotte Kansas Unified School District, GO, Series A, 5.50%, 09/01/47

    4,000       4,856,320  
   

 

 

 
Kentucky — 0.0%  

Kentucky State Property & Building Commission, Refunding RB, Project No. 93 (AGC), 5.25%, 02/01/19(a)

    45       46,861  
   

 

 

 
Louisiana — 0.9%  

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

   

Series A-1, 6.00%, 01/01/19

    500       523,460  

Series A-2, 6.00%, 01/01/19

    720       753,782  

Tobacco Settlement Financing Corp., Refunding RB, Asset-Backed, Series A, 5.50%, 05/15/29

    3,735       3,922,161  
   

 

 

 
      5,199,403  
Massachusetts — 1.6%  

Massachusetts Bay Transportation Authority, Refunding RB, Sub Series A-2, 5.00%, 07/01/40

    2,000       2,348,900  

Massachusetts Development Finance Agency, Refunding RB, Partners Healthcare System, 5.00%, 07/01/41

    4,710       5,367,799  
Security   Par
(000)
    Value  
Massachusetts (continued)  

Massachusetts Educational Financing Authority, RB, Education Loan, Issue I, AMT, 5.00%, 01/01/27

  $ 1,000     $ 1,114,470  
   

 

 

 
      8,831,169  
Michigan — 3.5%  

City of Detroit Michigan Water Supply System Revenue, RB, 2nd Lien, Series B (AGM):

   

6.25%, 07/01/19(a)

    6,310       6,765,456  

6.25%, 07/01/36

    10       10,622  

Hudsonville Michigan Public Schools, GO, School Building & Site (Q-SBLF), 5.25%, 05/01/21(a)

    6,015       6,702,153  

Royal Oak Hospital Finance Authority Michigan, Refunding RB, William Beaumont Hospital, Series V, 8.25%, 09/01/18 (a)

    5,780       6,074,029  
   

 

 

 
      19,552,260  
Minnesota — 1.6%  

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

    8,375       8,763,181  
   

 

 

 
Mississippi — 2.8%  

Mississippi Development Bank, RB, Jackson Water & Sewer System Project (AGM):

   

6.88%, 12/01/40

    6,405       7,999,781  

Special Obligation, 6.75%, 12/01/31

    3,775       4,688,739  

Special Obligation, 6.75%, 12/01/33

    2,350       2,918,817  
   

 

 

 
      15,607,337  
Nevada — 2.2%  

County of Clark Nevada, ARB, Las Vegas-McCarran International Airport, Series A (AGM), 5.25%, 07/01/39

    11,175       12,025,529  
   

 

 

 
New Jersey — 6.9%  

New Jersey EDA, RB, Goethals Bridge Replacement Project, AMT, Private Activity Bond:

   

5.38%, 01/01/43

    7,000       7,789,390  

(AGM), 5.00%, 01/01/31

    2,425       2,728,295  

New Jersey EDA, Refunding RB, Series B, 5.50%, 06/15/30

    2,330       2,699,841  

New Jersey Health Care Facilities Financing Authority, RB, Virtua Health, Series A (AGC), 5.50%, 07/01/38

    6,500       6,909,630  
 

 

 

SCHEDULES OF INVESTMENTS      3  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
New Jersey (continued)  

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

  $ 2,795     $ 3,040,401  

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

   

Series A, 5.50%, 06/15/41

    5,410       5,803,523  

Series AA, 5.50%, 06/15/39

    8,175       8,930,370  
   

 

 

 
      37,901,450  
New York — 10.1%  

City of New York New York Municipal Water Finance Authority, Refunding RB, 2nd General Resolution, Series EE:

   

Fiscal 2009, 5.25%, 06/15/40

    7,500       7,900,500  

Water & Sewer System, 5.38%, 06/15/43

    3,475       3,831,118  

City of New York New York Water & Sewer System, Refunding RB, 2nd General Resolution, Series FF-2, 5.50%, 06/15/40

    4,000       4,233,040  

Metropolitan Transportation Authority, RB:

   

Series A, 5.25%, 11/15/21(a)

    4,000       4,538,200  

Series A-1, 5.25%, 11/15/39

    4,490       5,238,528  

Metropolitan Transportation Authority, Refunding RB:

   

Series B, 5.00%, 11/15/37

    6,140       7,092,068  

Series C-1, 5.25%, 11/15/56

    4,000       4,677,640  

Port Authority of New York & New Jersey, Refunding ARB, Consolidated:

   

166th Series, 5.25%, 07/15/36

    10,000       11,014,400  

206th Series, AMT, 5.00%, 11/15/37

    850       988,108  

Port Authority of New York & New Jersey, Refunding RB, Consolidated, 205th Series, 5.25%, 05/15/42

    900       1,080,747  

Triborough Bridge & Tunnel Authority, Refunding RB, General, Series B, 5.00%, 11/15/38

    4,500       5,280,030  
   

 

 

 
      55,874,379  
Ohio — 1.5%  

State of Ohio Turnpike Commission, RB, Junior Lien, Infrastructure Projects, Series A-1:

   

5.25%, 02/15/31

    5,145       5,927,915  
Security   Par
(000)
    Value  
Ohio (continued)  

State of Ohio Turnpike Commission, RB, Junior Lien, Infrastructure Projects, Series A-1 (continued):

   

5.25%, 02/15/32

  $ 2,250     $ 2,587,590  
   

 

 

 
      8,515,505  
Pennsylvania — 4.6%  

Pennsylvania Turnpike Commission, RB, Sub-Series A, 5.50%, 12/01/46

    18,570       21,805,080  

Township of Bristol Pennsylvania School District, GO, 5.25%, 06/01/37

    3,000       3,386,370  
   

 

 

 
      25,191,450  
South Carolina — 6.8%  

County of Charleston South Carolina, RB, Special Source, 5.25%, 12/01/38

    6,735       7,832,940  

County of Charleston South Carolina Airport District, ARB, Series A, AMT:

   

5.25%, 07/01/25

    4,490       5,171,627  

5.50%, 07/01/38

    3,000       3,395,490  

6.00%, 07/01/38

    5,270       6,119,998  

5.50%, 07/01/41

    4,170       4,715,144  

State of South Carolina Ports Authority, RB, AMT, 5.25%, 07/01/50

    3,445       3,852,750  

State of South Carolina Public Service Authority, Refunding RB, Series E, 5.25%, 12/01/55

    5,500       6,219,125  
   

 

 

 
      37,307,074  
Texas — 14.8%  

City of Beaumont Texas, GO, Certificates of Obligation, 5.25%, 03/01/37

    4,190       4,759,211  

City of Houston Texas Combined Utility System Revenue, Refunding RB, Combined 1st Lien, Series A (AGC):

   

6.00%, 05/15/19(a)

    12,030       12,778,747  

6.00%, 05/15/19(a)

    8,940       9,496,425  

6.00%, 11/15/35

    670       714,093  

6.00%, 11/15/36

    495       527,576  

5.38%, 11/15/38

    265       278,510  

County of Tarrant Texas Cultural Education Facilities Finance Corp., Refunding RB, Christus Health, Series A (AGC), 6.50%, 07/01/37

    1,450       1,519,832  

Dallas-Fort Worth Texas International Airport, ARB, Joint Improvement, AMT:

   

Series A, 5.00%, 11/01/38

    5,580       5,983,434  

Series H, 5.00%, 11/01/37

    4,575       5,001,802  

Lower Colorado River Authority, Refunding RB, 5.50%, 05/15/33

    3,735       4,351,910  
 

 

 

4    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Texas (continued)  

North Texas Tollway Authority, Refunding RB, 1st Tier (a):

   

(AGM), 6.00%, 01/01/21

  $ 5,555     $ 6,276,539  

Series K-1 (AGC), 5.75%, 01/01/19

    12,150       12,687,759  

Red River Texas Education Financing Corp., RB, Texas Christian University Project, 5.25%, 03/15/38

    7,170       8,143,256  

Texas Water Development Board, RB:

   

Series A, 5.00%, 10/15/40

    3,170       3,671,209  

State Water Implementation Revenue, 5.25%, 10/15/46

    4,780       5,693,458  
   

 

 

 
      81,883,761  
Utah — 1.6%  

County of Utah Utah, RB, IHC Health Services, Inc., Series B, 5.00%, 05/15/46

    7,500       8,613,450  
   

 

 

 
Virginia — 1.2%  

City of Lexington Virginia IDA, RB, Washington & Lee University, 5.00%, 01/01/43

    1,750       1,923,460  

State of Virginia Public School Authority, RB, Fluvanna County School Financing, 6.50%, 12/01/18(a)

    4,300       4,518,268  
   

 

 

 
      6,441,728  
Washington — 1.7%  

City of Richland Washington, GO, Refunding, 5.00%, 12/01/45

    1,175       1,368,910  

City of Seattle Washington Municipal Light & Power, Refunding RB, Series A, 5.25%, 02/01/21(a)

    4,200       4,655,112  

State of Washington, GO, Various Purposes, Series B, 5.25%, 02/01/21(a)

    3,290       3,651,900  
   

 

 

 
      9,675,922  
   

 

 

 

Total Municipal Bonds — 126.3%
(Cost — $649,127,851)

 

    697,238,882  
   

 

 

 

Municipal Bonds Transferred to Tender Option Bond Trusts(b)

 

Alabama — 8.2%  

City of Birmingham Alabama Special Care Facilities Financing Authority, Refunding RB, Senior Credit:

   

Ascension Health, Series C, 5.00%, 11/15/46

    11,920       13,563,112  
Security   Par
(000)
    Value  
Alabama (continued)  

City of Birmingham Alabama Special Care Facilities Financing Authority, Refunding RB, Senior Credit (continued):

   

Ascension Group, Series B, 5.00%, 11/15/46

  $ 27,798     $ 31,630,231  
   

 

 

 
      45,193,343  
California — 2.6%  

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

    2,400       2,522,412  

University of California, Refunding RB, Series AR, 5.00%, 05/15/38

    10,000       11,759,750  
   

 

 

 
      14,282,162  
Florida — 2.0%  

County of Hillsborough Florida Aviation Authority, ARB, Tampa International Airport, Series A, AMT (AGC), 5.50%, 10/01/38

    10,657       10,937,277  
   

 

 

 
Indiana — 1.8%  

Indiana Health & Educational Facilities Financing Authority, Refunding RB, St. Francis, Series E (AGM), 5.25%, 05/01/18

    9,850       10,006,319  
   

 

 

 
Massachusetts — 2.9%  

Commonwealth of Massachusetts, GO, Series G, 4.00%, 09/01/42

    15,000       15,860,950  
   

 

 

 
Nevada — 2.4%  

County of Clark Nevada Water Reclamation District, GO:

   

Limited Tax, 6.00%, 07/01/18

    8,000       8,214,120  

Series B, 5.50%, 07/01/19

    5,008       5,309,720  
   

 

 

 
      13,523,840  
 

 

 

SCHEDULES OF INVESTMENTS      5  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
New Jersey — 3.3%  

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

  $ 7,038     $ 7,228,327  

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

   

Series A (AMBAC), 5.00%, 12/15/32

    8,000       8,017,920  

Series B, 5.25%, 06/15/36(c)

    2,961       3,158,426  
   

 

 

 
      18,404,673  
New York — 12.0%  

Hudson Yards Infrastructure Corp., RB, Fiscal 2012, Series A, 5.75%, 02/15/47(c)

    9,249       10,353,220  

New York Liberty Development Corp., RB, 1 World Trade Center Port Authority Consolidated Bonds, 5.25%, 12/15/43(c)

    13,950       15,554,278  

City of New York New York Transitional Finance Authority, BARB, Fiscal 2009, Series S-3, 5.25%, 01/15/39

    5,619       5,839,235  

New York City Transitional Finance Authority Future Tax Secured Revenue, RB, Fiscal 2017, Sub-Series B-1, 5.00%, 08/01/40

    5,000       5,807,000  

New York State Dormitory Authority, ERB, Personal Income Tax, Series B, 5.25%, 03/15/19

    13,500       14,124,982  

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

    8,200       9,279,772  

City of New York New York Municipal Water Finance Authority, Refunding RB, Water & Sewer System, 2nd General Resolution, Series FF-2, 5.50%, 06/15/40

    4,995       5,280,298  
   

 

 

 
      66,238,785  
Texas — 7.5%  

North Texas Tollway Authority, RB, Special Projects System, Series A, 5.50%, 09/01/21

    9,640       10,923,277  
Security   Par/Shares
(000)
    Value  
Texas (continued)  

State of Texas, GO, Texas Transportation Commission, Highway Improvement, 5.00%, 04/01/43

    15,550     $ 18,049,040  

City of San Antonio Texas Public Service Board, Refunding RB, Series A, 5.25%, 02/01/19(c)

    12,027       12,521,017  
   

 

 

 
      41,493.334  
Utah — 1.2%  

City of Riverton Utah, RB, IHC Health Services, Inc., 5.00%, 08/15/41

    6,373       6,699,077  
   

 

 

 

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 43.9%
(Cost — $237,398,906)

 

    242,639,760  
   

 

 

 

Total Investments — 170.2%
(Cost — $886,526,757)

 

    939,878,642  

Other Assets Less Liabilities — 1.8%

 

    9,699,178  

Liability for TOB Trust Certificates, Including Interest Expense and Fees Payable — (22.3)%

 

    (123,284,499

VRDP Shares at Liquidation Value, Net of Deferred Offering Costs — (49.7)%

 

    (274,200,434
   

 

 

 

Net Assets Applicable to Common
Shares — 100.0%

 

  $ 552,092,887  
   

 

 

 
 

 

 

6    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

(a)  U.S. 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.
(b)  Represent bonds transferred to a TOB Trust in exchange of cash and residual certificates received by the Trust. These bonds serve as collateral in a secured borrowing.
(c)  All or a portion of security is subject to a recourse agreement. The aggregate maximum potential amount the Trust could ultimately be required to pay under the agreement, which expire between September 6, 2018 to November 15, 2019 is $19,874,974.

During the period ended November 30, 2017, investments in issuers considered to be an affiliate of the Trust for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

 

Affiliate    Shares
Held at
08/31/17
       Net
Activity
       Shares
Held at
11/30/17
       Value at
11/30/17
       Income        Net
Realized
Gain(a)
       Change in
Unrealized
Appreciation
(Depreciation)
 

BlackRock Liquidity Funds, MuniCash, Institutional Class

                                       $ 1,903        $ 7           
                      

 

 

      

 

 

      

 

 

 

 

  (a)  Includes net capital gain distributions, if applicable.  

For Trust compliance purposes, the Trust’s sector classifications refer to one or more of the sector sub-classifications used by one or more widely recognized market indexes or rating group indexes, and/or as defined by the investment adviser. These definitions may not apply for purposes of this report, which may combine such sector sub-classifications for reporting ease

Derivative Financial Instruments Outstanding as of Period End

Futures Contracts

 

Description    Number of
Contracts
       Expiration
Date
       Notional
Amount
(000)
       Value /
Unrealized
Appreciation
(Depreciation)
 

Short Contracts

                 

5-Year U.S. Treasury Note

     104          03/29/18        $ 12,100        $ 45,951  

10-Year U.S. Treasury Note

     66          03/20/18          8,187          58,986  

Long U.S. Treasury Bond

     68          03/20/18          10,317          108,184  
                 

 

 

 

Total

                  $ 213,121  
                 

 

 

 

 

Portfolio Abbreviations
AGC    Assured Guarantee Corp.
AGM    Assured Guaranty Municipal Corp.
AMBAC    American Municipal Bond Assurance Corp.
AMT    Alternative Minimum Tax (subject to)
ARB    Airport Revenue Bonds
BARB    Building Aid Revenue Bonds
COP    Certificates of Participation
EDA    Economic Development Authority
ERB    Education Revenue Bonds
GARB    General Airport Revenue Bonds
GO    General Obligation Bonds
HFA    Housing Finance Agency

 

 

SCHEDULES OF INVESTMENTS      7  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

Portfolio Abbreviations (continued)
IDA    Industrial Development Authority
IDB    Industrial Development Board
LRB    Lease Revenue Bonds
RB    Revenue Bonds

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of investments and derivative financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

 

    Level 1 — unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Trust 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 Trust’s own assumptions used in determining the fair value of investments and derivative financial instruments)

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 fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the BlackRock Global Valuation Methodologies Committee (the “Global Valuation Committee”) in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. Level 3 investments may also be adjusted to reflect illiquidity and/or non-transferability, with the amount of such discount estimated by the Global Valuation Committee in the absence of market information.

Changes in valuation techniques may result in transfers into or out of an assigned level within the hierarchy. In accordance with the Trust’s policy, transfers between different levels of the fair value hierarchy are deemed to have occurred as of the beginning of the reporting period. The categorization of a value determined for investments and derivative financial instruments is based on the pricing transparency of the investments and derivative financial instruments and is not necessarily an indication of the risks associated with investing in those securities. For information about the Trust’s policy regarding valuation of investments and derivative financial instruments, refer to the Trust’s most recent financial statements as contained in its semi-annual report.

The following tables summarize the Trust’s investments and derivative financial instruments categorized in the disclosure hierarchy:

 

      Level 1        Level 2        Level 3        Total  

Assets:

 

Investments:

 

Long-Term Investments(a)

   $        $ 939,878,642        $        $ 939,878,642  
  

 

 

      

 

 

      

 

 

      

 

 

 

Derivative Financial Instruments(b)

 

Assets:

 

Interest rate contracts

   $ 213,121                          $ 213,121  
  

 

 

      

 

 

      

 

 

      

 

 

 

 

  (a)  See above Schedule of Investments for values in each state or political subdivision.  
  (b)  Derivative financial instruments are futures contracts which are valued at the unrealized appreciation (depreciation) on the instrument.  

 

 

8    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock MuniHoldings Investment Quality Fund (MFL)

(Percentages shown are based on Net Assets)

 

The Trust may hold assets and/or liabilities in which the fair value approximates the carrying amount for financial reporting purposes. As of period end, such assets and/or liabilities are categorized within the disclosure hierarchy as follows:

 

      Level 1        Level 2        Level 3        Total  

Liabilities:

 

TOB Trust Certificates

   $        $ (123,070,585      $        $ (123,070,585

VRDP Shares at Liquidation Value

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

 

 

      

 

 

      

 

 

      

 

 

 
   $             —        $ (397,670,585      $             —        $ (397,670,585
  

 

 

      

 

 

      

 

 

      

 

 

 

During the period ended November 30, 2017, there were no transfers between levels.

 

 

SCHEDULES OF INVESTMENTS      9  


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 22, 2018

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 22, 2018

 

  By:       /s/ Neal J. Andrews                           
    Neal J. Andrews   
    Chief Financial Officer (principal financial officer) of   
    BlackRock MuniHoldings Investment Quality Fund   

Date: January 22, 2018