0001752724-19-047536.txt : 20190529 0001752724-19-047536.hdr.sgml : 20190529 20190529071052 ACCESSION NUMBER: 0001752724-19-047536 CONFORMED SUBMISSION TYPE: NPORT-EX PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20190331 FILED AS OF DATE: 20190529 FILER: COMPANY DATA: COMPANY CONFORMED NAME: BLACKROCK MUNICIPAL BOND FUND, INC. CENTRAL INDEX KEY: 0000225635 IRS NUMBER: 132896246 STATE OF INCORPORATION: NJ FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: NPORT-EX SEC ACT: 1940 Act SEC FILE NUMBER: 811-02688 FILM NUMBER: 19859719 BUSINESS ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 BUSINESS PHONE: 800-441-7762 MAIL ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 FORMER COMPANY: FORMER CONFORMED NAME: MERRILL LYNCH MUNICIPAL BOND FUND INC DATE OF NAME CHANGE: 19920703 FORMER COMPANY: FORMER CONFORMED NAME: ONE LIBERTY MUNICIPAL BOND FUND INC DATE OF NAME CHANGE: 19780622 0000225635 S000011867 BlackRock High Yield Municipal Fund C000032425 Investor A C000032427 Investor C C000032428 Institutional C000199786 Class K ACCESSION NUMBER: 0001752724-19-039844 NPORT-EX 1 NPORT_219905500085179.htm EX-MUNIBOND-HY

Schedule of Investments  (unaudited)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

    

Shares

    Value  

Investment Companies — 0.2%

 

VanEck Vectors High-Yield Municipal Index ETF

    25,000     $ 1,569,250  
   

 

 

 

Total Investment Companies — 0.2%
(Cost — $1,598,250)

 

    1,569,250  
   

 

 

 
     Par
(000)
        

Municipal Bonds — 88.6%

   

Alabama — 1.4%

   

Alabama Special Care Facilities Financing Authority-Birmingham, RB, Methodist Home For The Aging:

   

5.75%, 06/01/35

  $ 200       221,602  

5.75%, 06/01/45

    355       385,285  

6.00%, 06/01/50

    450       493,799  

Black Belt Energy Gas District, RB, Series A,
4.00%, 12/01/48(a)

    4,585       4,883,025  

Chelsea Park Cooperative District, Special Assessment Bonds, 5.00%, 05/01/48

    970       978,779  

County of Jefferson Alabama Sewer, Refunding RB: Senior Lien,

   

Series A (AGM), 5.00%, 10/01/44

    365       401,361  

Sub-Lien, Series D, 7.00%, 10/01/51

    2,355       2,839,635  

Sub-Lien, Series D, 6.50%, 10/01/53

    3,465       4,099,338  

State of Alabama Docks Department, Refunding RB, 6.00%, 10/01/20(b)

    710       757,456  
   

 

 

 
      15,060,280  
Alaska — 0.5%  

Northern Tobacco Securitization Corp., Refunding RB, Tobacco Settlement, Asset-Backed,
Series A:

   

4.63%, 06/01/23

    155       155,037  

5.00%, 06/01/32

    1,510       1,509,955  

5.00%, 06/01/46

    3,340       3,242,605  
   

 

 

 
      4,907,597  
Arizona — 2.2%  

Arizona IDA, Refunding RB, Odyssey Preparatory Academy Project, Series A, 5.50%, 07/01/52(c)

    2,290       2,298,839  

Arizona Industrial Development Authority, RB:

   

Academies of Math & Science Project,
Series B, 5.25%, 07/01/51(c)

    570       574,885  

Great Lakes Senior Living Communities LLC Project, Series A, 4.50%, 01/01/49

    1,500       1,520,460  
Security  

Par

(000)

    Value  
Arizona (continued)  

Arizona Industrial Development Authority, RB (continued):

   

Great Lakes Senior Living Communities LLC Project, Series B, 5.13%, 01/01/54

  $ 940     $ 983,710  

Arizona Industrial Development Authority, Refunding RB, Basis Schools, Inc. Projects, Series A,
5.00%, 07/01/26(c)

    760       826,287  

City of Phoenix Arizona IDA, ERB, Eagle College Prep Project, Series A, 5.00%, 07/01/43

    1,445       1,463,453  

City of Phoenix Arizona IDA, RB:

   

Great Hearts Academies—Veritas Project,
6.40%, 07/01/21(b)

    415       458,882  

Legacy Traditional Schools Project, Series A,
6.50%, 07/01/34(c)

    465       512,332  

Legacy Traditional Schools Projects,
Series A, 6.75%, 07/01/44(c)

    810       893,471  

City of Phoenix Arizona IDA, Refunding RB(c):

   

Basis Schools, Inc. Projects, 5.00%, 07/01/35

    300       314,055  

Basis Schools, Inc. Projects, 5.00%, 07/01/45

    895       924,983  

Basis Schools, Inc. Projects, Series A,
5.00%, 07/01/35

    295       308,821  

Basis Schools, Inc. Projects, Series A,
5.00%, 07/01/46

    325       335,709  

Legacy Traditional School Projects,
5.00%, 07/01/35

    315       326,075  

Legacy Traditional School Projects, 5.00%, 07/01/45

    250       256,585  

City of Phoenix Industrial Development Authority, RB,

Series A(c):

   

Legacy Traditional Schools Projects,
5.00%, 07/01/36

    1,225       1,284,216  

Legacy Traditional Schools Projects,
5.00%, 07/01/41

    1,685       1,745,458  

Leman Academy of Excellence—ORO Valley Project, 5.25%, 07/01/48

    1,690       1,713,052  

County of La Paz IDA, RB, Imagine Schools Desert West Middle Project, 5.88%, 06/15/48(c)

    1,340       1,357,246  

State of Arizona IDA, RB, Academies of Math & Science Project, Series B, 5.13%, 07/01/47(c)

    420       421,789  
 

 

 

     1  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Arizona (continued)  

State of Arizona IDA, Refunding RB, Basis Schools, Inc. Projects, Series A, 5.25%, 07/01/47(c)

  $ 3,235     $ 3,403,835  

Town of Florence, Inc. Arizona, IDA, ERB, Legacy Traditional School Project, Queen Creek and Casa Grande Campuses, 6.00%, 07/01/43

    1,375       1,447,847  
   

 

 

 
      23,371,990  
Arkansas — 0.1%  

County of Benton Arkansas Public Facilities Board, RB, BCCSO Project, Series A,
6.00%, 06/01/20(b)(c)

    750       788,152  
   

 

 

 
California — 5.8%  

California Health Facilities Financing Authority, RB:

   

St. Joseph Health System, Series A,
5.75%, 07/01/39

    1,000       1,010,090  

Sutter Health, Series B, 6.00%, 08/15/20(b)

    1,000       1,062,300  

California Health Facilities Financing Authority, Refunding RB, Catholic Healthcare West,
Series A, 6.00%, 07/01/19(b)

    265       267,968  

California Municipal Finance Authority, ARB, Senior Lien-Linxs APM Project, AMT,
4.00%, 12/31/47

    2,560       2,646,144  

California Municipal Finance Authority, RB, Urban Discovery Academy Project(c):

   

5.50%, 08/01/34

    310       314,188  

6.00%, 08/01/44

    655       670,805  

6.13%, 08/01/49

    570       585,686  

California Municipal Finance Authority, Refunding RB, Community Medical Centers, Series A,
5.00%, 02/01/42

    345       385,845  

California Pollution Control Financing Authority, Refunding RB, County of San Diego Water Authority, 5.00%, 11/21/45(c)

    3,000       3,446,250  

California School Finance Authority, RB, Value Schools:

   

6.65%, 07/01/33

    295       329,506  

6.90%, 07/01/43

    650       723,177  

California Statewide Communities Development Authority, RB:

   

Loma Linda University Medical Center,
5.25%, 12/01/38(c)

    1,420       1,614,810  

Loma Linda University Medical Center,
5.25%, 12/01/48(c)

    1,000       1,121,810  
Security  

Par

(000)

    Value  
California (continued)  

California Statewide Communities Development Authority, RB (continued):

   

Loma Linda University Medical Center, Series A,
5.00%, 12/01/46(c)

  $ 970     $ 1,047,852  

Loma Linda University Medical Center, Series A,
5.25%, 12/01/56(c)

    875       956,725  

Sutter Health, Series A, 6.00%, 08/15/20(b)

    400       424,920  

California Statewide Communities Development Authority, Refunding RB, American Baptist Homes of the West, 6.25%, 10/01/39

    2,575       2,631,367  

California Statewide Financing Authority, RB,
Asset-Backed, Tobacco Settlement:

   

Series A, 6.00%, 05/01/43

    2,500       2,513,675  

Series B, 6.00%, 05/01/43

    3,485       3,504,063  

City & County of San Francisco California Redevelopment Agency, Tax Allocation Bonds, Mission Bay South Redevelopment Project,
Series D(c):

   

3.00%, 08/01/21

    675       682,276  

0.00%, 08/01/23(d)

    1,000       829,430  

0.00%, 08/01/26(d)

    580       414,132  

0.00%, 08/01/31(d)

    1,155       641,464  

City of Chula Vista California, Refunding RB, San Diego Gas & Electric, Series A, 5.88%, 02/15/34

    500       503,735  

City of San Jose California Hotel Tax, RB, Convention Center Expansion & Renovation Project:

   

6.50%, 05/01/36

    310       339,996  

6.50%, 05/01/42

    760       833,705  

City of Stockton California Public Financing Authority, RB, Delta Water Supply Project,
Series A, 6.25%, 10/01/40

    240       283,097  

County of California Tobacco Securitization Agency, RB, 5.45%, 06/01/28(e)

    500       507,550  

County of California Tobacco Securitization Agency, Refunding RB, Golden Gate Tobacco Funding Corp., Series A, 5.00%, 06/01/36

    1,665       1,665,000  
 

 

 

2   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
California (continued)  

County of Los Angeles California Tobacco Securitization Agency, RB, Asset-Backed, Los Angeles County Securitization Corp.(e):

   

5.70%, 06/01/46

  $ 4,260     $ 4,261,576  

5.60%, 06/01/36

    1,385       1,385,845  

County of Riverside California Transportation Commission, RB, Senior Lien, Series A,
5.75%, 06/01/48

    2,115       2,318,400  

Golden State Tobacco Securitization Corp., Refunding RB:

   

Series A-1, 5.00%, 06/01/47

    4,260       4,238,657  

Series A-1, 5.25%, 06/01/47

    945       954,516  

Series A-2, 5.00%, 06/01/47

    4,000       3,979,960  

Successor Agency to the San Francisco City & County Redevelopment Agency, Special Tax Bonds, Community Facilities District No. 6 (Mission Bay South Public Improvements),
Series C, CAB, 0.00%, 08/01/43(d)

    3,000       806,310  

Tobacco Securitization Authority of Southern California, Refunding RB, Tobacco Settlement, Asset-Backed, Senior Series A-1:

   

4.75%, 06/01/25

    560       560,050  

5.00%, 06/01/37

    7,410       7,410,815  

5.13%, 06/01/46

    3,590       3,590,395  
   

 

 

 
      61,464,090  
Colorado — 2.7%  

9th Avenue Metropolitan District No. 2, GOL, 5.00%, 12/01/48

    1,565       1,603,937  

Bromley Park Metropolitan District No. 2, GO, , Refunding, Sub-Series B, 6.38%, 12/15/47

    1,000       1,009,470  

Castle Oaks Metropolitan District No. 3, GO,
6.25%, 12/01/20(b)

    535       591,111  

Centerra Metropolitan District No. 1, Tax Allocation Bonds, 5.00%, 12/01/47(c)

    820       843,329  

Colorado Educational & Cultural Facilities Authority, RB, Littleton Preparatory Charter School Project:

   

5.00%, 12/01/33

    450       462,546  

5.00%, 12/01/42

    545       553,709  

Colorado Health Facilities Authority, Catholic Health Initiatives, Series A, 5.25%, 01/01/40

    1,250       1,346,725  

Colorado Health Facilities Authority, Refunding RB, Catholic Health Initiatives, Series B-1,
4.00%, 07/01/39

    4,000       4,080,640  
Security  

Par

(000)

    Value  
Colorado (continued)  

Colorado High Performance Transportation Enterprise, RB, C-470 Express Lanes,
5.00%, 12/31/56

  $ 2,500     $ 2,697,625  

Copperleaf Metropolitan District No. 2, GO, Refunding, 5.75%, 12/01/45

    780       817,393  

Copperleaf Metropolitan District No. 3, GO, Limited Tax, Series A:

   

5.00%, 12/01/37

    500       506,180  

5.13%, 12/01/47

    1,200       1,209,684  

Green Gables Metropolitan District No. 1, GO,
Series A, 5.30%, 12/01/46

    1,000       1,018,760  

Leyden Rock Metropolitan District No. 10, GO,
Series A, 5.00%, 12/01/45

    1,250       1,272,112  

North Holly Metropolitan District, GOL, Series A,
5.50%, 12/01/48

    760       763,238  

Prairie Farm Metropolitan District, GO, Series A, 5.25%, 12/01/48

    1,240       1,250,999  

Regional Transportation District, RB, Denver Transit Partners Eagle P3 Project:

   

6.00%, 01/15/34

    1,500       1,543,995  

6.00%, 01/15/41

    1,000       1,027,550  

Southlands Metropolitan District No. 1, GO, , Refunding, Series A-1:

   

5.00%, 12/01/37

    1,115       1,200,978  

5.00%, 12/01/47

    3,085       3,274,018  

Tallyns Reach Metropolitan District No. 3, GO, 6.75%, 11/01/38

    1,113       1,118,988  

Westcreek Metropolitan District No. 2, GO, Series A, 5.38%, 12/01/48(f)

    800       801,512  
   

 

 

 
      28,994,499  
Connecticut — 1.6%  

Mohegan Tribal Finance Authority, RB,
7.00%, 02/01/45(c)

    1,485       1,536,515  

Mohegan Tribe of Indians of Connecticut, RB,
Series A, 6.75%, 02/01/45(c)

    979       1,044,253  

Mohegan Tribe of Indians of Connecticut, Refunding RB, Public Improvement, Priority Distribution,
Series C, 6.25%, 02/01/30(c)

    2,045       2,258,355  

State of Connecticut, GO:

   

Series A, 5.00%, 04/15/36(f)

    2,300       2,710,596  

Series A, 4.00%, 04/15/37(f)

    1,800       1,916,154  

Series C, 5.00%, 06/15/33

    1,775       2,086,850  

Series C, 5.00%, 06/15/34

    1,375       1,610,826  
 

 

 

     3  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Connecticut (continued)  

State of Connecticut, GO (continued):

   

Series E, 5.00%, 09/15/34

  $ 3,000     $ 3,523,890  
   

 

 

 
      16,687,439  
Delaware — 1.1%  

Delaware State Economic Development
Authority, RB:

   

5.00%, 06/01/46

    1,000       1,030,890  

5.00%, 11/15/48

    4,000       4,441,640  

State of Delaware EDA, RB, Exempt Facilities, Indian River Power LLC Project, 5.38%, 10/01/45

    5,930       6,157,712  
   

 

 

 
      11,630,242  
District of Columbia — 0.8%  

District of Columbia Tobacco Settlement Financing Corp., Refunding RB, Asset-Backed,
6.75%, 05/15/40

    385       397,493  

Metropolitan Washington Airports Authority, Refunding ARB, Dulles Metrorail And Capital Improvement Projects, Series A, 5.00%, 10/01/53

    3,830       4,012,538  

Metropolitan Washington Airports Authority, Refunding RB:

   

CAB, 2nd Senior Lien, Series B (AGC),
0.00%, 10/01/30(d)

    3,005       2,080,241  

Dulles Toll Road, 1st Senior Lien, Series A,
5.00%, 10/01/39

    185       187,603  

Dulles Toll Road, 1st Senior Lien, Series A,
5.25%, 10/01/44

    1,610       1,632,621  
   

 

 

 
      8,310,496  
Florida — 6.1%  

Boggy Creek Improvement District, Refunding RB, Special Assessment Bonds, 5.13%, 05/01/43

    1,300       1,314,313  

Capital Region Community Development District, Refunding, Special Assessment, Capital Improvement Revenue Bond, Series A-1,
5.13%, 05/01/39

    2,290       2,311,434  

Capital Trust Agency, Inc., RB, Series A:

   

1st Mortgage, Silver Creek St. Augustine Project,
8.25%, 01/01/44(g)(h)

    445       311,500  

1st Mortgage, Silver Creek St. Augustine Project,
8.25%, 01/01/49(g)(h)

    950       665,000  

Silver Creek St. Augustine Project,
5.75%, 01/01/50(g)(h)

    570       541,500  
Security  

Par

(000)

    Value  
Florida (continued)  

Capital Trust Agency, Inc., RB, Series A (continued):

   

University Bridge LLC Student Housing Project,
5.25%, 12/01/58(c)

  $ 1,265     $ 1,241,939  

Celebration Pointe Community Development District, Special Assessment Bonds:

   

4.75%, 05/01/24

    415       425,524  

5.00%, 05/01/34

    1,250       1,270,675  

Alachua County, 4.00%, 05/01/22(c)

    235       238,111  

City of Tallahassee Florida, RB, Tallahassee Memorial HealthCare, Inc. Project, Series A, 5.00%, 12/01/55

    2,600       2,820,272  

County of Alachua Florida Health Facilities Authority, RB, Shands Teaching Hospital and Clinics,
Series A, 5.00%, 12/01/44

    1,720       1,878,051  

County of Collier Florida IDA, Refunding RB, Arlington of Naples Project, Series A, 8.13%, 05/15/44(c)

    370       370,784  

County of Collier Health Facilities Authority, RB, Moorings, Inc., Series A, 5.00%, 05/01/48

    2,090       2,331,395  

County of Martin Florida Health Facilities Authority, RB, 5.50%, 11/15/42

    1,000       1,074,730  

County of Miami-Dade Florida IDA, RB, Doral Academy Project, 5.00%, 01/15/48

    1,405       1,493,150  

County of Palm Beach Florida Health Facilities Authority, Refunding RB, Sinai Residences Boca Raton Project, 7.50%, 06/01/49

    1,000       1,128,610  

Florida Development Finance Corp., RB:

   

Renaissance Charter School, Series A,
5.75%, 06/15/29

    695       744,491  

Renaissance Charter School, Series A,
6.00%, 06/15/34

    835       893,258  

Renaissance Charter School, Series A,
6.13%, 06/15/44

    3,185       3,376,992  

Solid Waste Disposal Facility, Waste Pro USA, Inc. Project, AMT, 5.00%, 08/01/29(a)(c)

    2,240       2,327,494  

Florida Higher Educational Facilities Financial Authority, RB, Jacksonville University Project, Series A-1, 5.00%, 06/01/48(c)

    1,730       1,839,699  
 

 

 

4   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Florida (continued)  

Greater Orlando Aviation Authority Florida, Refunding RB, Special Purpose, Jetblue Airways Corp. Project, AMT, 5.00%, 11/15/36

  $ 2,000     $ 2,099,140  

Greeneway Improvement District, RB, Special Assessment Bonds, 5.13%, 05/01/43

    1,315       1,330,123  

Lakewood Ranch Stewardship District, Special Assessment Bonds:

   

3.90%, 05/01/23

    355       357,105  

4.25%, 05/01/28

    535       538,922  

5.00%, 05/01/38

    1,175       1,193,741  

5.10%, 05/01/48

    2,545       2,587,552  

Lakewood Centre & NW Sector Projects,
4.95%, 05/01/29(c)

    715       738,738  

Lakewood Centre & NW Sector Projects,
5.50%, 05/01/39(c)

    715       752,344  

Lakewood Centre & NW Sector Projects,
5.65%, 05/01/48(c)

    1,125       1,183,590  

Northeast Sector Project - Phase 1B,
5.30%, 05/01/39(c)

    1,090       1,134,875  

Northeast Sector Project - Phase 1B,
4.75%, 05/01/29(c)

    955       989,647  

Northeast Sector Project - Phase 1B,
5.45%, 05/01/48(c)

    1,935       2,035,291  

Lakewood Ranch Stewardship District Special Assessment Bonds:

   

4.25%, 05/01/25

    115       116,668  

4.88%, 05/01/35

    280       285,522  

4.88%, 05/01/45

    580       586,687  

Village of Lakewood Ranch Sector Projects, 4.00%, 05/01/21

    100       100,731  

Lakewood Ranch Stewardship District Special Assessment Bonds, Refunding, Lakewood Center & New Sector Projects, 8.00%, 05/01/40

    515       572,170  

Lakewood Ranch Stewardship District Special Assessment Bonds, Village of Lakewood Ranch Sector Projects:

   

4.25%, 05/01/26

    175       177,751  

5.13%, 05/01/46

    1,015       1,039,137  

Miami Health Facilities Authority, Refunding RB, Miami Jewish Health Systems, Inc. Project,
5.13%, 07/01/46

    2,000       2,171,720  

Mid-Bay Florida Bridge Authority, RB, Springing Lien, Series A, 7.25%, 10/01/21(b)

    1,450       1,648,244  

Midtown Miami Community Development District, Refunding, Special Assessment Bonds, Series A:

   

5.00%, 05/01/29

    1,745       1,833,506  

5.00%, 05/01/37

    890       927,941  
Security  

Par

(000)

    Value  
Florida (continued)  

Pine Island Community Development District, RB, 0.00%, 11/01/24(d)

  $ 1,150     $ 840,857  

Santa Rosa Bay Bridge Authority, RB:

   

6.25%, 07/01/28(g)(h)

    372       277,271  

(ACA), 6.25%, 07/01/28

    62       59,578  

Tolomato Community Development District, Refunding, Special Assessment Bonds(e):

   

Convertible CAB, Series A3, 6.61%, 05/01/40

    90       89,575  

Convertible CAB, Series A4, 6.61%, 05/01/40

    50       41,501  

Series 2015-2, 6.61%, 05/01/40

    125       83,713  

Tolomato Community Development District(g)(h):

   

Series 1, 6.61%, 05/01/40(e)

    205       167,073  

Series 1, 6.65%, 05/01/40

    5       4,699  

Series 3, 6.61%, 05/01/40

    135       1  

Series 3, 6.65%, 05/01/40

    105       1  

Trout Creek Community Development District, Special Assessment Bonds:

   

5.38%, 05/01/38

    670       697,075  

5.50%, 05/01/49

    1,700       1,770,652  

Viera East Community Development District, Refunding, Special Assessment Bonds,
5.00%, 05/01/26

    640       693,043  

Village Community Development District No. 9, Special Assessment Bonds:

   

7.00%, 05/01/41

    1,305       1,440,394  

5.50%, 05/01/42

    495       523,656  

Village Community Development District No.10, Special Assessment Bonds, 5.13%, 05/01/43

    1,580       1,708,059  

West Villages Improvement District, Special Assessment Bonds(c)(f):

   

4.25%, 05/01/29

    400       399,984  

4.75%, 05/01/39

    885       879,327  

5.00%, 05/01/50

    1,415       1,414,958  
   

 

 

 
      64,091,484  
Georgia — 1.1%  

County of Clayton Georgia Development Authority, Refunding RB, Delta Air Lines, Inc. Project,
Series A, 8.75%, 06/01/29

    635       683,730  

County of Dalton Whitfield Joint Development Authority, RB, Hamilton Health Care System Obligation, 4.00%, 08/15/48

    3,135       3,303,005  

County of Gainesville & Hall Georgia Development Authority, Refunding RB, Acts Retirement Life Community, Series A-2, 6.63%, 11/15/19(b)

    225       231,907  
 

 

 

     5  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Georgia (continued)  

County of Gainesville Georgia & Hall Hospital Authority, Refunding RB, Northeast Georgia Health System, Inc. Project, Series A (GTD), 5.50%, 08/15/54

  $ 555     $ 641,630  

Main Street Natural Gas, Inc., RB, Series A:

   

5.00%, 05/15/35

    1,020       1,214,810  

5.00%, 05/15/36

    1,020       1,215,177  

5.00%, 05/15/37

    1,120       1,334,625  

5.00%, 05/15/38

    615       734,519  

5.00%, 05/15/49

    2,055       2,500,113  
   

 

 

 
      11,859,516  
Guam — 0.2%  

Territory of Guam, GO, Series A:

   

6.00%, 11/15/19

    20       20,483  

6.75%, 11/15/19(b)

    1,650       1,703,807  
   

 

 

 
      1,724,290  
Idaho — 0.4%  

County of Power Idaho Industrial Development Corp., RB, FMC Corp. Project, AMT,
6.45%, 08/01/32

    265       266,012  

Idaho Health Facilities Authority, Refunding RB, Madison Hospital Memorial Project:

   

3.50%, 09/01/33

    375       347,006  

5.00%, 09/01/37

    1,000       1,085,750  

Idaho Housing & Finance Association, RB(c):

   

Compass Public Charter School, Inc. Project, Series A, 6.00%, 07/01/39

    370       400,225  

Compass Public Charter School, Inc. Project, Series A, 6.00%, 07/01/49

    595       637,662  

Compass Public Charter School, Inc. Project, Series A, 6.00%, 07/01/54

    570       606,532  

Idaho Arts Charter School, Inc.,
5.00%, 12/01/46

    1,000       1,046,620  
   

 

 

 
      4,389,807  
Illinois — 6.1%  

Chicago Board of Education, GO, Refunding:

   

Dedicated Revenues, Series D,
5.00%, 12/01/31

    1,500       1,627,860  

Dedicated Revenues, Series G,
5.00%, 12/01/44

    3,700       3,886,924  
Security  

Par

(000)

    Value  
Illinois (continued)  

Chicago Board of Education, GO, Refunding (continued):

   

Dedicated Revenues, Series H,
5.00%, 12/01/46

  $ 725     $ 760,097  

Dedicated Revenues, Series C,
5.00%, 12/01/30

    1,370       1,493,643  

Dedicated Revenues, Series F,
5.00%, 12/01/22

    1,030       1,091,450  

Series B, 4.00%, 12/01/35

    1,155       1,107,379  

Series C, 5.00%, 12/01/25

    1,220       1,318,088  

Chicago Board of Education, GO:

   

Series A, 5.00%, 12/01/42

    1,570       1,610,899  

Series C, 5.25%, 12/01/39

    2,250       2,368,530  

Series D, 5.00%, 12/01/46

    1,010       1,058,571  

Series D, 5.00%, 12/01/46

    2,610       2,685,951  

Chicago O’Hare International Airport, RB, AMT,
5.00%, 07/01/48

    2,000       2,240,860  

City of Chicago Illinois, GO, Refunding, Series A:

   

6.00%, 01/01/38

    1,850       2,110,480  

5.00%, 01/01/44(f)

    920       975,577  

5.50%, 01/01/49(f)

    330       364,112  

City of Chicago Illinois O’Hare International Airport, Refunding RB, Series C, AMT, 5.00%, 01/01/46

    3,000       3,295,110  

Illinois Finance Authority, RB, Lake Forest College,
Series A, 6.00%, 10/01/48

    1,700       1,804,584  

Illinois Finance Authority, Refunding RB:

   

Central Dupage Health, Series B,

5.50%, 11/01/19(b)

    1,400       1,431,738  

Friendship Village of Schaumburg,
7.13%, 02/15/20(b)

    1,000       1,047,310  

Presence Health Network, Series C,
5.00%, 02/15/36

    1,805       2,083,475  

Presence Health Network, Series C,
5.00%, 02/15/41

    3,000       3,413,310  

Rogers Park Montessori School Project, Series 2014, 6.00%, 02/01/34

    335       354,785  

Rogers Park Montessori School Project, Series 2014, 6.13%, 02/01/45

    790       830,069  

Swedish Covenant, Series A, 6.00%, 02/15/20(b)

    1,000       1,038,080  

Metropolitan Pier & Exposition Authority, RB, Series A, McCormick Place Expansion Project:

   

Bonds, 0.00%, 12/15/56(d)

    7,645       1,324,573  
 

 

 

6   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Illinois (continued)  

Metropolitan Pier & Exposition Authority, RB,
Series A, McCormick Place Expansion Project (continued):

   

Bonds, 5.00%, 06/15/57

  $ 2,085     $ 2,203,866  

5.50%, 06/15/53

    3,925       4,243,945  

Metropolitan Pier & Exposition Authority, Refunding RB, McCormick Place Expansion Project,
Series B(d):

   

CAB (AGM), 0.00%, 06/15/44

    3,455       1,218,544  

Bonds, 0.00%, 12/15/54

    9,660       1,863,897  

Quad Cities Regional EDA, Refunding RB, Augustana College, 4.75%, 10/01/32

    675       708,089  

Railsplitter Tobacco Settlement Authority, RB,
6.00%, 06/01/21(b)

    390       426,430  

State of Illinois, GO:

   

5.00%, 03/01/35

    1,095       1,120,984  

5.00%, 02/01/39

    510       527,784  

Refunding, Series B, 5.00%, 10/01/29

    1,430       1,581,065  

Series A, 5.00%, 04/01/35

    1,460       1,512,370  

Series A, 5.00%, 04/01/38

    2,190       2,256,970  

Series D, 5.00%, 11/01/28

    5,000       5,517,150  
   

 

 

 
      64,504,549  
Indiana — 1.5%  

City of Valparaiso Indiana, RB, Exempt Facilities, Pratt Paper LLC Project, AMT:

   

6.75%, 01/01/34

    525       606,317  

7.00%, 01/01/44

    1,270       1,475,778  

City of Vincennes Indiana, Refunding RB, Southwest Indiana Regional Youth Village Project, 6.25%, 01/01/29(c)

    2,950       3,013,189  

County of Allen Indiana, RB, StoryPoint Fort Wayne Project, Series A-1(c):

   

6.63%, 01/15/34

    430       460,259  

6.75%, 01/15/43

    1,220       1,297,934  

6.88%, 01/15/52

    1,270       1,353,604  

Indiana Finance Authority, RB:

   

Green Bonds, 7.00%, 03/01/39(c)(f)

    1,010       1,055,622  

Private Activity Bond, Ohio River Bridges East End Crossing Project, Series A, AMT,
5.00%, 07/01/44

    370       395,193  

Private Activity Bond, Ohio River Bridges East End Crossing Project, Series A, AMT,
5.00%, 07/01/48

    1,230       1,310,368  
Security  

Par

(000)

    Value  
Indiana (continued)  

Indiana Finance Authority, RB (continued):

   

Private Activity Bond, Ohio River Bridges East End Crossing Project, Series A, AMT,
5.25%, 01/01/51

  $ 2,500     $ 2,683,250  

Indiana Finance Authority, Refunding RB, Marquette Project, 5.00%, 03/01/39

    725       751,049  

Town of Chesterton Indiana, RB, StoryPoint Chesterton Project, Series A-1, 6.38%, 01/15/51(c)

    1,745       1,809,164  
   

 

 

 
      16,211,727  
Iowa — 1.9%  

Iowa Finance Authority, Refunding RB, Iowa Fertilizer Co. Project:

   

3.13%, 12/01/22(f)

    3,705       3,727,675  

5.25%, 12/01/50(a)

    595       627,416  

Series B, 5.25%, 12/01/50(a)

    6,105       6,540,897  

Midwestern Disaster Area, 5.50%, 12/01/22

    20       20,022  

Iowa Student Loan Liquidity Corp., Refunding RB, AMT, Senior Series A-1, 5.00%, 12/01/21

    1,075       1,117,473  

Iowa Tobacco Settlement Authority, Refunding RB, Series C:

   

Asset-Backed, 5.50%, 06/01/42

    2,000       2,000,140  

5.38%, 06/01/38

    3,075       3,075,215  

State of Iowa Finance Authority, RB, Lifespace Communities, Series A, 5.00%, 05/15/48

    2,360       2,506,296  
   

 

 

 
      19,615,134  
Kentucky — 0.3%  

Kentucky Economic Development Finance Authority, Refunding RB, Norton Healthcare, Inc., Series B (NPFGC), 0.00%, 10/01/24(d)

    250       215,820  

Kentucky Public Transportation Infrastructure Authority, RB, 6.00%, 07/01/53

    3,000       3,290,940  
   

 

 

 
      3,506,760  
Louisiana — 0.9%  

Juban Crossing Economic Development District, Refunding RB, General Infrastructure Project, Series C, 7.00%, 09/15/44(c)

    3,130       3,189,783  
 

 

 

     7  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Louisiana (continued)  

Louisiana Local Government Environmental Facilities & Community Development Authority, RB, Westlake Chemical Corp., Series A-2,
6.50%, 11/01/35

  $ 1,630     $ 1,737,531  

Louisiana Public Facilities Authority, RB, Belle Chasse Educational Foundation Project,
6.75%, 05/01/41

    645       677,353  

Tobacco Settlement Financing Corp., Refunding RB, Asset-Backed, Series A, 5.25%, 05/15/35

    3,910       4,267,413  
   

 

 

 
      9,872,080  
Maine — 0.1%  

Maine Health & Higher Educational Facilities Authority, RB, Maine General Medical Center, 6.75%, 07/01/41

    1,075       1,163,161  
   

 

 

 
Maryland — 0.9%  

City of Baltimore Maryland, Refunding RB, East Baltimore Research Park Project,
4.00%, 09/01/27

    325       337,607  

City of Gaithersburg Maryland, Refunding RB, Asbury Maryland Obligation, Series B,
6.00%, 01/01/23

    750       771,495  

County of Frederick Maryland, RB, Jefferson Technology Park Project, Series B,
7.13%, 07/01/43(c)

    2,895       2,915,033  

Maryland EDC, RB:

   

Purple Line Light Rail Project, AMT,
5.00%, 03/31/51

    3,135       3,388,966  

Term Project, Series B, 5.75%, 06/01/20(b)

    1,500       1,572,885  

Maryland EDC, Refunding RB, University of Maryland Project, 5.00%, 07/01/39

    950       1,018,818  
   

 

 

 
      10,004,804  
Massachusetts — 2.1%  

Massachusetts Development Finance Agency, RB:

   

Boston Medical Center, Series D,
4.00%, 07/01/45

    715       725,932  

Boston Medical Center, Series D,
5.00%, 07/01/44

    3,865       4,208,251  

Foxborough Regional Charter School, Series A, 7.00%, 07/01/20(b)

    350       373,597  

Linden Ponds, Inc. Facility, Series B,
0.00%, 11/15/56(d)

    94       24,740  
Security  

Par

(000)

    Value  
Massachusetts (continued)  

Massachusetts Development Finance Agency, RB (continued):

   

North Hill Communities Issue, Series A,
6.50%, 11/15/23(b)(c)

  $ 2,480     $ 2,982,175  

UMass Boston Student Housing Project,
5.00%, 10/01/41

    2,500       2,716,200  

Massachusetts Development Finance Agency, Refunding RB:

   

New Bridge Charles, Inc., 4.00%, 10/01/32(c)

    355       353,899  

New Bridge Charles, Inc., 4.13%, 10/01/42(c)

    855       823,203  

New Bridge Charles, Inc., 5.00%, 10/01/57(c)

    570       598,563  

Series A, 5.00%, 07/01/38

    1,200       1,381,608  

Series A, 5.00%, 07/01/39

    3,055       3,498,586  

Series A, 5.00%, 07/01/44

    3,750       4,257,825  

Tufts Medical Center, Series I,
6.75%, 01/01/21(b)

    305       331,782  

Tufts Medical Center, Series I,
6.75%, 01/01/21(b)

    205       223,001  
   

 

 

 
      22,499,362  
Michigan — 0.8%  

City of Detroit Michigan, GO:

   

5.00%, 04/01/34

    485       522,971  

5.00%, 04/01/35

    485       521,360  

5.00%, 04/01/36

    340       364,225  

5.00%, 04/01/37

    545       581,134  

5.00%, 04/01/38

    240       255,526  

Kentwood EDC, Refunding RB, Limited Obligation, Holland Home, 5.63%, 11/15/41

    1,000       1,058,900  

Michigan Finance Authority, RB, Detroit Water & Sewage Disposal System, Senior Lien,
Series 2014 C-2, AMT, 5.00%, 07/01/44

    350       374,080  

Michigan Finance Authority, Refunding RB, Detroit Water & Sewage Department Project, Senior Lien, Series C-1, 5.00%, 07/01/44

    800       855,296  

Michigan State Hospital Finance Authority, Refunding RB, Henry Ford Health System,
5.75%, 11/15/19(b)

    1,710       1,753,964  
 

 

 

8   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Michigan (continued)  

State of Michigan Strategic Fund, RB, I-75 Improvement Projects, AMT, 5.00%, 06/30/48

  $ 2,030     $ 2,301,776  
   

 

 

 
      8,589,232  
Minnesota — 0.9%  

City of Cologne Minnesota Charter School, LRB, Cologne Academy Project, Series A,
5.00%, 07/01/45

    2,065       2,081,892  

City of Deephaven Minnesota, Refunding RB, Eagle Ridge Academy Project, Series A,
5.25%, 07/01/40

    500       531,090  

Duluth EDA, Refunding RB, Essentia Health Obligated Group, Series A:

   

4.25%, 02/15/48

    1,925       2,019,113  

5.25%, 02/15/53

    3,850       4,390,078  

St. Paul Housing & Redevelopment Authority, RB, Nova Classical Academy, Series A,
6.63%, 09/01/21(b)

    500       558,620  
   

 

 

 
      9,580,793  
Missouri — 1.2%  

City of St. Louis Missouri IDA, Refunding RB, BallPark Village Development Project, Series A:

   

4.38%, 11/15/35

    1,020       1,050,274  

4.75%, 11/15/47

    1,135       1,171,558  

Health & Educational Facilities Authority of the State of Missouri, Refunding RB, St. Lukes Health Syatem, Series A, 4.00%, 11/15/48

    3,650       3,840,493  

Kansas City Land Clearance Redevelopment Authority, Tax Allocation Bonds(c):

   

4.38%, 02/01/31

    830       850,443  

5.00%, 02/01/40

    1,240       1,293,469  

Kansas City Missouri IDA, Refunding RB, Kansas City United Methodist Church(c):

   

5.75%, 11/15/36

    1,350       1,178,064  

6.00%, 11/15/51

    110       91,704  

Kirkwood Missouri IDA, RB, Aberdeen Heights, Series A, 8.25%, 05/15/20(b)

    435       466,346  
Security  

Par

(000)

    Value  
Missouri (continued)  

Poplar Bluff Regional Transportation Development District, RB, 4.75%, 12/01/42

  $ 2,200     $ 2,273,546  
   

 

 

 
      12,215,897  
Nebraska — 0.8%  

Central Plains Nebraska Energy Project, RB, Gas Project No. 3, 5.00%, 09/01/42

    780       844,475  

Central Plains Nebraska Energy Project, Refunding RB, Gas Project No. 3, Series A, 5.00%, 09/01/42

    6,090       7,433,941  
   

 

 

 
      8,278,416  
Nevada — 0.1%  

County of Clark Nevada, Refunding, Special Assessment, Special Improvement District No. 142, Mountain’s Edge:

   

4.00%, 08/01/22

    615       641,876  

4.00%, 08/01/23

    380       396,146  
   

 

 

 
      1,038,022  
New Hampshire — 0.7%  

New Hampshire Business Finance Authority, Refunding RB, Resource Recovery, Covanta Project(c):

   

Series B, 4.63%, 11/01/42

    4,650       4,706,032  

Series C, AMT, 4.88%, 11/01/42

    2,515       2,564,571  

New Hampshire Health & Education Facilities Authority, Refunding RB, Dartmouth-Hitchcock, 6.00%, 08/01/19(b)

    435       441,329  
   

 

 

 
      7,711,932  
New Jersey — 6.1%  

Casino Reinvestment Development Authority, Refunding RB, 5.25%, 11/01/44

    5,750       6,183,492  

County of Essex New Jersey Improvement Authority, RB, AMT, 5.25%, 07/01/45(c)

    1,155       1,162,935  

County of Gloucester New Jersey Pollution Control Financing Authority, Refunding RB, Keystone Urban Renewal Project, Series A, AMT,
5.00%, 12/01/24

    1,500       1,605,075  

New Jersey EDA, ARB, Continental Airlines, Inc. Project, 5.13%, 09/15/23

    1,965       2,122,848  

New Jersey EDA, RB:

   

Continental Airlines, Inc. Project, AMT,
4.88%, 09/15/19

    230       232,512  

Continental Airlines, Inc. Project, AMT,
5.25%, 09/15/29

    840       917,364  
 

 

 

     9  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
New Jersey (continued)  

New Jersey EDA, RB (continued):

   

Goethals Bridge Replacement Project, AMT, Private Activity Bond, 5.38%, 01/01/43

  $ 1,360     $ 1,501,222  

Kapkowski Road Landfill Project, Series B, AMT, 6.50%, 04/01/31

    3,000       3,430,080  

Provident Group-Kean Properties, Series A, 5.00%, 07/01/32

    235       257,725  

Provident Group-Kean Properties, Series A, 5.00%, 07/01/37

    375       406,241  

Series EEE, 5.00%, 06/15/48

    6,970       7,545,722  

State House Project, Series B, Remark 10,
5.00%, 06/15/43

    3,755       4,085,140  

Team Academy Charter School Project,
6.00%, 10/01/43

    970       1,068,261  

New Jersey Health Care Facilities Financing Authority, Refunding RB, Princeton HealthCare System:

   

5.00%, 07/01/32

    1,140       1,339,021  

5.00%, 07/01/33

    1,450       1,698,226  

New Jersey Transportation Trust Fund Authority, RB:

   

Transportation Program Bonds, Series S,
5.25%, 06/15/43

    4,095       4,565,065  

Federal Highway Reimbursement Revenue Notes, Series A, 5.00%, 06/15/28

    7,050       8,116,524  

Transportation Program, Series AA,
5.25%, 06/15/41

    1,265       1,372,158  

Transportation Program, Series AA,
5.00%, 06/15/44

    1,005       1,064,888  

Transportation Program, Series AA,
5.00%, 06/15/44

    1,860       1,947,457  

New Jersey Transportation Trust Fund Authority, Refunding RB, Transportation System, Series A, 5.00%, 12/15/36

    1,195       1,324,180  

South Jersey Port Corp., RB, Sub-Marine Terminal, Series B, AMT, 5.00%, 01/01/36

    575       644,293  

Tobacco Settlement Financing Corp., Refunding RB:

   

Series A, 5.25%, 06/01/46

    900       998,082  
Security  

Par

(000)

    Value  
New Jersey (continued)  

Tobacco Settlement Financing Corp., Refunding RB (continued):

   

Sub-Series B, 5.00%, 06/01/46

  $ 10,370     $ 10,938,587  
   

 

 

 
      64,527,098  
New Mexico — 0.2%  

New Mexico Hospital Equipment Loan Council, Refunding RB, Gerald Champion Regional Medical Center Project, 5.50%, 07/01/42

    2,030       2,181,336  
   

 

 

 
New York — 9.2%  

Build NYC Resource Corp., Refunding RB, Pratt Paper, Inc. Project, AMT, 5.00%, 01/01/35(c)

    1,215       1,309,794  

Chautauqua Tobacco Asset Securitization Corp., Refunding RB, 5.00%, 06/01/48

    4,475       4,523,375  

Counties of New York Tobacco Trust II, RB, Settlement Pass-Through, 5.75%, 06/01/43

    485       491,906  

Counties of New York Tobacco Trust IV, Refunding RB, Settlement Pass-Through Turbo, Series A:

   

6.25%, 06/01/41(c)

    8,100       8,325,180  

5.00%, 06/01/42

    4,520       4,495,140  

5.00%, 06/01/45

    1,695       1,677,796  

Counties of New York Tobacco Trust VI, Refunding RB, Tobacco Settlement Pass-Through,
Series A-2B:

   

5.00%, 06/01/45

    4,010       4,224,214  

5.00%, 06/01/51

    6,865       7,030,584  

County of Dutchess New York Industrial Development Agency, Refunding RB, Bard College Civic Facility, Series A-1,
5.00%, 08/01/46

    4,755       4,755,048  

County of Westchester New York Healthcare Corp., RB, Senior Lien, Series A, 5.00%, 11/01/44

    1,375       1,490,654  

County of Westchester New York Local Development Corp., Refunding RB, Westchester Medical Center Obligation, 5.00%, 11/01/46

    4,495       4,918,069  

Erie Tobacco Asset Securitization Corp., Refunding RB, Asset-Backed, Series A, 5.00%, 06/01/45

    3,210       3,209,904  

Metropolitan Transportation Authority Hudson Rail Yards Trust Obligations, Refunding RB, Series A:

   

5.00%, 11/15/56

    6,425       6,995,668  

5.00%, 11/15/51

    3,135       3,322,724  
 

 

 

10   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
New York (continued)  

New York Liberty Development Corp., Refunding RB:

   

2nd Priority, Bank of America Tower at One Bryant Park Project, Class 3, 6.38%, 07/15/49

  $ 375     $ 388,073  

3 World Trade Center Project, Class 1,
5.00%, 11/15/44(c)

    7,365       7,850,353  

3 World Trade Center Project, Class 2,
5.15%, 11/15/34(c)

    450       490,212  

3 World Trade Center Project, Class 2,
5.38%, 11/15/40(c)

    1,070       1,156,756  

3 World Trade Center Project, Class 3,
7.25%, 11/15/44(c)

    3,115       3,678,192  

New York Transportation Development Corp., ARB, LaGuardia Airport Terminal B Redevelopment Project, Series A, AMT, 5.25%, 01/01/50

    3,000       3,271,830  

New York Transportation Development Corp., RB, AMT, 4.00%, 01/01/36

    5,000       5,180,900  

New York Transportation Development Corp., Refunding ARB, American Airlines, Inc., AMT:

   

5.00%, 08/01/26

    3,130       3,284,309  

5.00%, 08/01/31

    6,995       7,285,432  

Niagara Area Development Corp., Refunding RB, Covanta Project, Series A, AMT,
4.75%, 11/01/42(c)

    530       541,612  

Rockland Tobacco Asset Securitization Corp., RB, Asset-Backed, 5.75%, 08/15/43

    690       707,533  

State of New York Dormitory Authority, Refunding RB, Orange Regional Medical Center(c):

   

5.00%, 12/01/33

    590       675,273  

5.00%, 12/01/35

    785       891,736  

TSASC, Inc., Refunding RB, Tobacco Settlement Bonds, Subordinate, Series B, 5.00%, 06/01/48

    1,450       1,451,450  

Westchester New York Tobacco Asset Securitization, Refunding RB, Tobacco Settlement Bonds, Sub-Series C:

   

4.00%, 06/01/42

    970       942,801  

5.13%, 06/01/51

    2,000       2,047,420  
   

 

 

 
      96,613,938  
North Carolina — 0.5%  

North Carolina Department of Transportation, RB, AMT, I-77 Hot Lanes Project, 5.00%, 06/30/54

    1,385       1,482,892  
Security  

Par

(000)

    Value  
North Carolina (continued)  

North Carolina Medical Care Commission, Refunding RB, 1st Mortgage, Retirement Facilities Whitestone Project, Series A,
7.75%, 03/01/21(b)

  $ 3,055     $ 3,399,695  
   

 

 

 
      4,882,587  
North Dakota — 0.6%  

County of Cass North Dakota, Refunding RB, Essentia Health Obligated Group, Series B, 5.25%, 02/15/58

    1,785       2,009,000  

County of Ward North Dakota, RB, Trinity Obligated Group, Series C, 5.00%, 06/01/53

    4,000       4,317,040  
   

 

 

 
      6,326,040  
Ohio — 2.6%  

Buckeye Tobacco Settlement Financing Authority, RB, Asset-Backed, Series A-2:

   

Senior Turbo Term, 5.88%, 06/01/47

    10,545       10,282,008  

6.00%, 06/01/42

    10,000       9,916,300  

County of Butler Port Authority, RB, Series A-1(c):

   

Storypoint Fairfield Project, 6.25%, 01/15/34

    1,575       1,647,828  

StoryPoint Fairfield Project, 6.38%, 01/15/43

    840       879,463  

County of Hamilton Ohio, Refunding RB, Improvement-Life Enriching Communities,
5.00%, 01/01/46

    1,435       1,499,173  

Port of Greater Cincinnati Development Authority, RB, AHA-Colonial Village Athens Garden,
5.25%, 12/01/50

    740       547,874  

State of Ohio, RB, Portsmouth Bypass Project, AMT, 5.00%, 06/30/53

    2,410       2,563,782  
   

 

 

 
      27,336,428  
Oklahoma — 1.4%  

County of Tulsa Oklahoma Industrial Authority, Refunding RB, Montereau, Inc. Project,
5.25%, 11/15/37

    1,050       1,181,701  

Oklahoma Development Finance Authority, RB, OU Medicine Project, Series B:

   

5.00%, 08/15/38

    4,585       5,151,156  

5.25%, 08/15/43

    4,130       4,716,129  
 

 

 

     11  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Oklahoma (continued)  

Oklahoma Turnpike Authority, RB, 2nd Series C, 4.00%, 01/01/42

  $ 3,340     $ 3,554,729  
   

 

 

 
      14,603,715  
Oregon — 0.1%  

Polk County Hospital Facility Authority, RB, Dallas Retirement Village Project, Series A:

   

5.13%, 07/01/35

    620       646,685  

5.38%, 07/01/45

    535       558,139  
   

 

 

 
      1,204,824  
Pennsylvania — 2.6%  

Allentown Neighborhood Improvement Zone Development Authority, Refunding RB, Series A:

   

5.00%, 05/01/35

    1,185       1,237,021  

5.00%, 05/01/42

    2,730       2,826,778  

City of Philadelphia Pennsylvania Hospitals & Higher Education Facilities Authority, RB, Temple University Health System, Series A, 5.63%, 07/01/36

    3,000       3,234,000  

Commonwealth Financing Authority, RB, Tobacco Master Settlement Payment:

   

5.00%, 06/01/33

    170       198,293  

5.00%, 06/01/34

    225       261,513  

County of Lehigh Pennsylvania General Purpose Authority, Refunding RB, Bible Fellowship Church Homes, 5.13%, 07/01/32

    745       754,603  

County of Montgomery Higher Education & Health Authority, Refunding RB, Thomas Jefferson University, Series A:

   

4.00%, 09/01/49

    880       908,952  

5.00%, 09/01/43

    2,095       2,384,236  

County of Montgomery Pennsylvania IDA, RB, Foulkeways Gwynedd Project, 5.00%, 12/01/46

    1,470       1,559,494  

County of Montgomery Pennsylvania IDA, Refunding RB, Whitemarsh Continuing Care Retirement Community Project, 5.38%, 01/01/50

    1,865       1,888,257  

County of Northampton Pennsylvania IDA,
Route 33 Project, Tax Allocation Bonds,
7.00%, 07/01/32

    1,240       1,393,673  

East Hempfield Township Pennsylvania IDA, RB:

   

5.00%, 07/01/34

    1,000       1,065,850  

5.00%, 07/01/46

    1,750       1,831,987  
Security  

Par

(000)

    Value  
Pennsylvania (continued)  

Pennsylvania Economic Development Financing Authority, RB:

   

AMT, 5.00%, 06/30/42

  $ 895     $ 977,609  

U.S. Airways Group, Series A, 7.50%, 05/01/20

    1,200       1,263,000  

Pennsylvania Economic Development Financing Authority, Refunding RB, National Gypsum Co., AMT, 5.50%, 11/01/44

    5,390       5,661,333  
   

 

 

 
      27,446,599  
Puerto Rico — 4.4%  

Children’s Trust Fund, Refunding RB, Tobacco Settlement Asset-Backed Bonds, 5.63%, 05/15/43

    1,145       1,157,171  

Commonwealth of Puerto Rico, GO, Refunding Public Improvement(g)(h):

   

, Refunding, Series C, 6.50%, 07/01/40

    400       229,000  

Public Improvement, Series B, 5.25%, 07/01/17

    1,060       681,050  

Commonwealth of Puerto Rico, GO, Refunding, Series A(g)(h):

   

Public Improvement, 5.50%, 07/01/39

    1,080       569,700  

8.00%, 07/01/35

    6,015       3,120,281  

Commonwealth of Puerto Rico, GO(g)(h):

   

6.00%, 07/01/38

    1,210       783,475  

5.25%, 07/01/16

    1,135       729,238  

5.50%, 07/01/32

    5,045       3,266,637  

Commonwealth of Puerto Rico Aqueduct & Sewer Authority, RB, Senior Lien, Series A:

   

5.75%, 07/01/37

    5,575       5,561,062  

5.25%, 07/01/42

    1,740       1,709,550  

6.00%, 07/01/44

    3,275       3,279,094  

Commonwealth of Puerto Rico Aqueduct & Sewer Authority, Refunding RB, Senior Lien, Series A, 6.00%, 07/01/38

    7,210       7,219,012  

Puerto Rico Electric Power Authority, RB(g)(h):

   

Series A, 5.00%, 07/01/29

    1,500       1,055,625  

Series A, 7.25%, 07/01/30

    250       182,500  

Series A, 7.00%, 07/01/33

    340       248,200  

Series A, 5.00%, 07/01/42

    1,625       1,143,594  

Series A, 7.00%, 07/01/43

    320       233,600  

Series TT, 5.00%, 07/01/25

    165       116,119  

Series WW, 5.38%, 07/01/24

    305       216,169  

Series XX, 5.25%, 07/01/40

    785       555,388  
 

 

 

12   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Puerto Rico (continued)  

Puerto Rico Electric Power Authority,
Refunding RB(g)(h):

   

Series AAA, 5.25%, 07/01/28

  $ 310     $ 219,325  

Series ZZ, 5.25%, 07/01/21

    90       63,675  

Series ZZ, 5.00%, 07/01/28

    345       242,794  

Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue, RB, Restructured:

   

Series A-1, 0.00%, 07/01/24(d)

    149       125,105  

Series A-1, 0.00%, 07/01/27(d)

    252       187,901  

Series A-1, 0.00%, 07/01/29(d)

    245       162,452  

Series A-1, 0.00%, 07/01/31(d)

    316       186,939  

Series A-1, 0.00%, 07/01/33(d)

    356       188,922  

Series A-1, 4.55%, 07/01/40

    132       129,891  

Series A-1, 0.00%, 07/01/46(d)

    3,386       728,329  

Series A-1, 0.00%, 07/01/51(d)

    2,758       436,371  

Series A-1, 4.50%, 07/01/34

    1,301       1,315,350  

Series A-1, 4.75%, 07/01/53

    4,052       3,841,985  

Series A-1, 5.00%, 07/01/58

    4,416       4,363,229  

Series A-2, 4.55%, 07/01/40

    1,340       1,182,563  

Series A-2, 4.75%, 07/01/53

    40       34,301  

Series A-2, 5.00%, 07/01/58

    537       469,880  
   

 

 

 
      45,935,477  
Rhode Island — 2.0%  

Rhode Island Student Loan Authority, Refunding RB, Senior-Series A, AMT, 3.50%, 12/01/34

    1,945       2,009,769  

Tobacco Settlement Financing Corp., Refunding RB:

   

Series A, 5.00%, 06/01/35

    1,005       1,071,802  

Series A, 5.00%, 06/01/40

    5,500       5,776,100  

Series B, 4.50%, 06/01/45

    6,350       6,178,232  

Series B, 5.00%, 06/01/50

    5,650       5,754,582  
   

 

 

 
      20,790,485  
South Carolina — 2.6%  

South Carolina Jobs-Economic Development Authority, Refunding RB:

   

Prisma Health Obligated Group, Series A, 5.00%, 05/01/48

    5,825       6,594,599  

The Woodlands at Furman, 4.00%, 11/15/27

    825       832,994  

State of South Carolina Ports Authority, RB, AMT, 5.00%, 07/01/45

    1,975       2,187,411  

State of South Carolina Public Service Authority, RB, Series E, 5.50%, 12/01/53

    3,475       3,810,755  
Security  

Par

(000)

    Value  
South Carolina (continued)  

State of South Carolina Public Service Authority, Refunding RB, Series A, 5.00%, 12/01/50

  $ 13,005     $ 14,297,307  
   

 

 

 
      27,723,066  
Tennessee — 1.1%  

County of Knox Health Educational & Housing Facility Board, Refunding RB, University Health System, Inc., 5.00%, 04/01/36

    560       619,091  

County of Memphis-Shelby Tennessee Industrial Development Board, Refunding, Tax Allocation Bonds, Senior Tax Increment, Graceland Project, Series A:

   

5.50%, 07/01/37

    1,650       1,771,919  

5.63%, 01/01/46

    1,875       1,997,569  

County of Nashville & Davidson Metropolitan Government Health & Educational Facilities Board, RB, Vanderbilt University Medical Center, Series A, 5.00%, 07/01/40

    925       1,036,120  

County of Nashville & Davidson Metropolitan Government Health & Educational Facilities Board, Refunding RB, Lipscomb University Project, Series A(f):

   

4.00%, 10/01/49

    1,635       1,670,185  

5.25%, 10/01/58

    3,335       3,828,113  

Nashville Metropolitan Development & Housing Agency, Tax Allocation Bonds, Tax Increment Development Revenue Fifth+Broadway Development Project, 5.13%, 06/01/36(c)

    500       535,245  
   

 

 

 
      11,458,242  
Texas — 7.1%  

Arlington Higher Education Finance Corp., RB, Series A, 5.88%, 03/01/24

    500       508,595  

Central Texas Regional Mobility Authority, Refunding RB:

   

CAB, 0.00%, 01/01/28(d)

    3,000       2,351,460  

CAB, 0.00%, 01/01/29(d)

    500       378,640  

CAB, 0.00%, 01/01/30(d)

    1,330       969,211  

CAB, 0.00%, 01/01/31(d)

    4,000       2,784,640  

Senior Lien, 6.25%, 01/01/21(b)

    765       825,060  

City of Austin Texas Airport System Revenue, RB, Series B, AMT, 5.00%, 11/15/46

    3,500       3,924,795  
 

 

 

     13  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Texas (continued)  

City of Houston Texas Airport System, Refunding ARB, AMT:

   

Special Facilities, Continental Airlines, Inc., Series A, 6.63%, 07/15/38

  $ 1,110     $ 1,194,549  

United Airlines, Inc. Terminal E Project,
5.00%, 07/01/29

    1,000       1,104,650  

United Airlines, Inc., Airport Improvement Projects, Series C, 5.00%, 07/15/20

    825       850,245  

United Airlines, Inc., 5.00%, 07/15/28

    2,725       3,174,979  

Clifton Higher Education Finance Corp., ERB, Idea Public Schools(b):

   

5.50%, 08/15/21

    255       277,468  

5.75%, 08/15/21

    280       306,289  

County of Bexar Texas Health Facilities Development Corp., RB, Army Retirement Residence Project, 6.20%, 07/01/20(b)

    1,320       1,393,458  

County of Fort Bend Texas Industrial Development Corp., RB, NRG Energy Inc. Project, Series B, 4.75%, 11/01/42

    3,380       3,469,367  

County of Harris Texas Cultural Education Facilities Finance Corp., Refunding, MRB, Brazos Presbyterian Homes, Inc. Project, Series A:

   

5.00%, 01/01/38

    510       529,355  

5.00%, 01/01/43

    520       535,891  

5.13%, 01/01/48

    1,535       1,585,809  

County of Harris Texas Houston Sports Authority, Refunding RB, CAB, Senior Lien, Series G (NPFGC), 0.00%, 11/15/41(d)

    350       121,517  

County of Matagorda Texas Navigation District No. 1, Refunding RB, Central Power & Light Co., Project, Series A, 6.30%, 11/01/29

    290       298,810  

County of Tarrant Texas Cultural Education Facilities Finance Corp., RB:

   

Christus Health, Series B, 5.00%, 07/01/48

    8,560       9,706,013  

Senior Living Center Project, Series A,
8.25%, 11/15/44

    800       720,000  

County of Travis Texas Health Facilities Development Corp., Refunding RB,
7.13%, 01/01/21(b)

    1,920       2,099,539  

Houston Higher Education Finance Corp., RB, Cosmos Foundation, Inc., 6.50%, 05/15/21(b)

    535       587,633  
Security  

Par

(000)

    Value  
Texas (continued)  

Mission EDC, Refunding RB, Senior Lien, NatGasoline Project, AMT, 4.63%, 10/01/31(c)

  $ 1,500     $ 1,558,245  

New Hope Cultural Education Facilities Corp., RB, Stephenville LLC Tarleton State University Project:

   

5.88%, 04/01/36

    890       974,114  

6.00%, 04/01/45

    1,355       1,480,866  

New Hope Cultural Education Facilities Finance Corp., Refunding RB, Series A, Jubilee Academic(c):

   

Center, 5.00%, 08/15/46

    695       698,037  

5.00%, 08/15/36

    2,520       2,545,074  

Newark Higher Education Finance Corp., RB:

   

Austin Achieve Public School, Inc.,
5.00%, 06/15/48

    1,500       1,521,075  

Series A, 5.50%, 08/15/35(c)

    375       397,890  

Series A, 5.75%, 08/15/45(c)

    645       686,609  

North Texas Tollway Authority, Refunding RB, 2nd Tier-Series B, 5.00%, 01/01/43

    5,145       5,876,053  

Red River Health Facilities Development Corp., First MRB, Project:

   

Eden Home, Inc., 7.25%, 12/15/42(g)(h)

    1,330       827,925  

Wichita Falls Retirement Foundation, 5.13%, 01/01/41

    600       613,596  

Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien:

   

AMT, Blueridge Transportation Group,
5.00%, 12/31/50

    3,480       3,773,434  

LBJ Infrastructure Group LLC, 7.00%, 06/30/40

    1,000       1,060,600  

NTE Mobility Partners LLC, North Tarrant Express Managed Lanes Project, 6.88%, 12/31/39

    4,740       4,909,265  

Texas Transportation Commission, RB, First Tier Toll Revenue(d):

   

0.00%, 08/01/46

    2,580       725,057  

0.00%, 08/01/47

    3,850       1,027,026  

0.00%, 08/01/48

    4,070       1,030,402  

0.00%, 08/01/49

    3,825       918,956  

0.00%, 08/01/50

    5,485       1,237,800  

0.00%, 08/01/51

    3,230       687,118  

0.00%, 08/01/52

    3,230       648,100  

0.00%, 08/01/53

    290       54,972  
 

 

 

14   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Texas (continued)  

Town of Flower Mound Texas, Special Assessment Bonds, 6.50%, 09/01/36

  $ 1,500     $ 1,528,755  
   

 

 

 
      74,478,942  
Utah — 0.5%  

State of Utah Charter School Finance Authority, RB:

   

Navigator Pointe Academy, Series A,
5.63%, 07/15/40

    1,000       1,012,530  

Spectrum Academy Project, 6.00%, 04/15/45(c)

    2,000       2,035,880  

State of Utah Charter School Finance Authority, Refunding RB, 6.75%, 10/15/43

    2,050       2,052,296  
   

 

 

 
      5,100,706  
Virginia — 2.7%  

County of Hanover Virginia EDA, Refunding RB, Covenant Woods, Series A:

   

5.00%, 07/01/42

    2,000       2,057,140  

Residential Care Facility, 5.00%, 07/01/47

    1,015       1,042,131  

Lower Magnolia Green Community Development Authority, Special Assessment Bonds(c):

   

5.00%, 03/01/35

    490       498,761  

5.00%, 03/01/45

    505       511,161  

Mosaic District Community Development Authority, Special Assessment, Series A:

   

6.63%, 03/01/26

    515       546,291  

6.88%, 03/01/36

    450       478,809  

Norfolk Redevelopment & Housing Authority, RB, Fort Norfolk Retirement Community, Inc. - Harbor’s Edge Project, Series A:

   

5.00%, 01/01/49

    1,250       1,293,788  

5.25%, 01/01/54

    3,750       3,920,888  

Tobacco Settlement Financing Corp., Refunding RB, Senior Series B-1, 5.00%, 06/01/47

    7,120       7,028,366  

Virginia Beach Development Authority, Refunding RB, Westminster-Canterbury on Chesapeake Bay, 4.00%, 09/01/48

    2,885       2,990,764  

Virginia College Building Authority, RB, Marymount University Project, Series B, 5.00%, 07/01/45(c)

    535       557,973  

Virginia Small Business Financing Authority, RB, Senior Lien, AMT:

   

Elizabeth River Crossings OpCo LLC Project, 6.00%, 01/01/37

    3,360       3,688,070  
Security  

Par

(000)

    Value  
Virginia (continued)  

Virginia Small Business Financing Authority, RB, Senior Lien, AMT (continued):

   

Express Lanes LLC, 5.00%, 07/01/34

  $ 3,300     $ 3,500,970  
   

 

 

 
      28,115,112  
Washington — 0.5%  

County of King Washington Public Hospital District No. 4, GO, Refunding, Snoqualmie Valley Hospital, 7.00%, 12/01/40

    545       563,802  

Greater Wenatchee Regional Events Center Public Facilities District, Refunding RB, Series A,
5.50%, 09/01/42

    1,005       1,026,226  

Washington State Housing Finance Commission, Refunding RB(c):

   

5.75%, 01/01/35

    355       358,766  

6.00%, 01/01/45

    940       953,555  

Horizon House Project, 5.00%, 01/01/48

    2,410       2,630,202  
   

 

 

 
      5,532,551  
Wisconsin — 2.1%  

Public Finance Authority, RB:

   

Alabama Proton Therapy Center, Series A, 6.25%, 10/01/31(c)

    910       976,839  

Alabama Proton Therapy Center, Series A, 7.00%, 10/01/47(c)

    910       982,117  

American Preparatory Academy - Las Vegas Project, Series A, 5.38%, 07/15/47(c)

    1,595       1,679,248  

Delray Beach Radiation Therapy,
6.85%, 11/01/46(c)

    1,325       1,428,482  

Delray Beach Radiation Therapy,
7.00%, 11/01/46(c)

    805       875,776  

Minnesota College of Osteopathic Medicine, Series A-1, 5.50%, 12/01/48(c)(f)

    1,260       1,302,827  

Piedmont Community Charter School, 5.00%, 06/15/39

    310       345,089  

Piedmont Community Charter School, 5.00%, 06/15/49

    955       1,048,160  

Piedmont Community Charter School,
5.00%, 06/15/53

    645       702,212  

Series A, 5.00%, 12/01/45

    1,910       1,962,124  

Series A, 5.15%, 12/01/50

    1,315       1,354,503  

Voyager Foundation, Inc. Project, Series A, 5.13%, 10/01/45

    1,850       1,908,164  

Public Finance Authority, Refunding RB:

   

Celanese Project, Series D, 4.05%, 11/01/30

    525       536,015  
 

 

 

     15  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
Wisconsin (continued)            

Public Finance Authority, Refunding RB (continued):

   

Senior Obligated Group, Series B, AMT, 5.00%, 07/01/42

  $ 2,150     $ 2,277,000  

White Stone Retirement Facilities, 5.00%, 03/01/52(c)

    1,300       1,379,599  

Wingate University, Series A,
5.25%, 10/01/48

    1,790       1,986,327  

Wisconsin Health & Educational Facilities Authority, Refunding RB:

   

Benevolent Corporation Cedar Community,
5.00%, 06/01/41

    350       364,872  

St. Johns Communities, Inc., Series A,
7.25%, 09/15/19(b)

    75       76,900  

St. Johns Communities, Inc., Series A,
7.63%, 09/15/19(b)

    145       148,916  

Wisconsin Housing & Economic Development Authority, RB, M/F Housning, WHPC Madison Pool Project, Series A, 4.70%, 07/01/47

    740       787,190  
   

 

 

 
      22,122,360  
   

 

 

 

Total Municipal Bonds — 88.6%
(Cost — $888,370,280)

      934,451,257  
   

 

 

 

Municipal Bonds Transferred to Tender Option Bond Trusts(i)

 

California — 0.2%

 

Bay Area Toll Authority, Refunding RB, San Francisco Bay Area, Series F-1,
5.63%, 04/01/44

    480       480,133  
Security  

Par

(000)

    Value  
California (continued)  

City of Los Angeles California Department of Airports, Refunding ARB, Los Angeles International Airport, Senior Series A,
5.00%, 05/15/40

  $ 1,679     $ 1,741,006  
   

 

 

 
      2,221,139  
Colorado — 0.5%  

Colorado Health Facilities Authority, Refunding RB, Sisters of Leavenworth Health System, Series A,
5.00%, 01/01/40

    5,592       5,707,500  
   

 

 

 
Florida — 0.4%  

County of Miami-Dade Florida, RB, Water & Sewer System, 5.00%, 10/01/20(b)

    3,499       3,678,825  
   

 

 

 
Illinois — 1.4%  

Illinois Finance Authority, RB, The Carle Foundation, Series A (AGM), 6.00%, 08/15/41

    2,480       2,692,028  

Illinois Finance Authority, Refunding RB, Presence Health Network, Series C, 4.00%, 02/15/41

    6,510       6,790,190  

State of Illinois Toll Highway Authority, RB, Series A, 5.00%, 01/01/40

    5,011       5,635,146  
   

 

 

 
      15,117,364  
Massachusetts — 0.3%  

Commonwealth of Massachusetts Transportation Fund Revenue, RB, Rail Enhancement Program, Series A, 4.00%, 06/01/45

    3,464       3,630,275  
   

 

 

 
New York — 6.9%  

City of New York New York Housing Development Corp., RB, M/F, Series C-1A:

   

4.15%, 11/01/39

    3,107       3,211,316  

4.20%, 11/01/44

    5,695       5,886,230  

4.30%, 11/01/47

    4,660       4,816,904  

City of New York Water & Sewer System, Refunding RB, 2nd General Resolution, Series HH,
5.00%, 06/15/31(j)

    3,015       3,223,970  

Hudson Yards Infrastructure Corp., RB, Senior-Fiscal 2012(j):

   

5.75%, 02/15/21(b)

    1,065       1,144,592  

5.75%, 02/15/47

    655       704,119  
 

 

 

16   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

(Percentages shown are based on Net Assets)

 

Security  

Par

(000)

    Value  
New York (continued)  

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

  $ 7,725     $ 8,394,721  

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

    2,520       2,757,962  

New York State Dormitory Authority, Refunding RB, Series E, 5.00%, 03/15/36

    21,670       25,073,707  

Port Authority of New York & New Jersey, Refunding ARB, 194th Series, 5.25%, 10/15/55

    2,925       3,360,435  

State of New York Urban Development Corp., RB, State Personal Income Tax, General Purpose, Series A, 4.00%, 03/15/46

    13,005       13,984,407  
   

 

 

 
      72,558,363  
North Carolina — 0.3%  

North Carolina Capital Facilities Finance Agency, Refunding RB, Duke University Project,
Series B, 5.00%, 10/01/55

    2,930       3,326,575  
   

 

 

 
Pennsylvania — 0.4%  

Pennsylvania Turnpike Commission, RB, Sub-Series A, 5.50%, 12/01/42

    3,677       4,304,109  
   

 

 

 
Rhode Island — 0.3%  

Narragansett Bay Commission, Refunding RB, Wastewater System, Series A,
4.00%, 09/01/43

    2,641       2,711,595  
   

 

 

 
Texas — 0.3%  

Lower Colorado River Authority, Refunding RB, LCRA Transmission Services Corporation Project, 4.00%, 05/15/43

    3,480       3,560,597  
   

 

 

 
Virginia — 0.3%  

Virginia Small Business Financing Authority, Refunding RB, Sentara Healthcare,
5.00%, 11/01/40

    2,501       2,585,512  
   

 

 

 
Security  

Par

(000)

    Value  
Washington — 1.2%  

City of Bellingham Washington Water & Sewer Revenue, RB, Water & Sewer, 5.00%, 08/01/40

  $ 2,998     $ 3,199,992  

County of Snohomish Public Utility District No. 1, 5.00%, 12/01/45

    8,664       9,789,939  
   

 

 

 
      12,989,931  
Wisconsin — 0.4%  

State of Wisconsin Health & Educational Facilities Authority, Refunding RB:

   

Froedtert & Community Health, Inc., Obligated Group, Series C,
5.25%, 04/01/39(j)

    2,179       2,179,309  

The Medical College of Wisconsin, Inc., 4.00%, 12/01/46

    1,774       1,841,326  
   

 

 

 
      4,020,635  
   

 

 

 

Total Municipal Bonds Transferred to
Tender Option Bond Trusts — 12.9%
(Cost — $131,029,953)

 

    136,412,420  
   

 

 

 

Total Long-Term Investments — 101.7%
(Cost — $1,020,998,483)

 

    1,072,432,927  
   

 

 

 
    

Shares

        

Short-Term Securities — 6.0%

 

BlackRock Liquidity Funds, MuniCash, Institutional Class, 1.38%(k)(l)

    62,758,252       62,770,803  
   

 

 

 

Total Short-Term Securities — 6.0%
(Cost — $62,763,051)

 

    62,770,803  
   

 

 

 

Total Investments — 107.7%
(Cost — $1,083,761,534)

 

    1,135,203,730  

Liabilities in Excess of Other Assets — (0.4)%

 

    (3,933,044

Liability for TOB Trust Certificates, Including
Interest Expense and Fees Payable — (7.3)%

 

    (76,940,588
   

 

 

 

Net Assets — 100.0%

 

  $ 1,054,330,098  
   

 

 

 
 

 

(a) 

Variable or floating rate security, which interest rate adjusts periodically based on changes in current interest rates and prepayments on the underlying pool of assets. Rate shown is the rate in effect as of period end.

(b) 

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.

 

 

     17  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

 

(c) 

Security exempt from registration pursuant to Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration to qualified institutional investors.

(d) 

Zero-coupon bond.

(e) 

Step-up bond that pays an initial coupon rate for the first period and then a higher coupon rate for the following periods. Rate as of period end.

(f) 

When-issued security.

(g) 

Issuer filed for bankruptcy and/or is in default.

(h) 

Non-income producing security.

(i) 

Represent bonds transferred to a TOB Trust in exchange of cash and residual certificates received by the Fund. These bonds serve as collateral in a secured borrowing.

(j) 

All or a portion of security is subject to a recourse agreement. The aggregate maximum potential amount the Fund could ultimately be required to pay under the agreements, which expires between June 15, 2019 to April 1, 2039, is $5,480,997.

(k) 

Annualized 7-day yield as of period end.

(l) 

During the period ended March 31, 2019, investments in issuers considered to be an affiliate of the Fund for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

 

Affiliate    Shares
Held at
06/30/18
     Net
Activity
     Shares
Held at
03/31/19
     Value at
03/31/19
     Income      Net Realized
Gain (Loss) (a)
     Change in
Unrealized
Appreciation
(Depreciation)
 

BlackRock Liquidity Funds, MuniCash, Institutional Class

     37,605,441        25,152,811        62,758,252      $ 62,770,803      $ 451,994      $ 2,826      $ 5,129  
           

 

 

    

 

 

    

 

 

    

 

 

 

 

  (a) 

Includes net capital gain distributions, if applicable.

 

Portfolio Abbreviations

ACA — American Capital Access Holding Ltd.

AGC — Assured Guarantee Corp.

AGM — Assured Guaranty Municipal Corp.

AMT — Alternative Minimum Tax (subject to)

ARB — Airport Revenue Bonds

CAB — Capital Appreciation Bonds

EDA — Economic Development Authority

EDC — Economic Development Corp.

ERB — Education Revenue Bonds

ETF — Exchange-Traded Fund

GO — General Obligation Bonds

GTD — Guaranteed

IDA — Industrial Development Authority

LRB — Lease Revenue Bonds

M/F — Multi-Family

MRB — Mortgage Revenue Bonds

NPFGC — National Public Finance Guarantee Corp.

RB — Revenue Bonds

 

 

18   


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

 

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:

                 

10-Year U.S. Treasury Note

     125          06/19/19        $ 15,527        $ (132,255

Long U.S. Treasury Bond

     434          06/19/19          64,951          (1,247,463

5-Year U.S. Treasury Note

     25          06/28/19          2,896          (13,348
                 

 

 

 
        $ (1,393,066
                 

 

 

 

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 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 Fund’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 Fund’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 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 derivative financial instruments, refer to the Fund’s most recent financial statements as contained in its semi-annual report.

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

 

      Level 1        Level 2        Level 3        Total  

Assets:

 

Investments:

 

Long-Term Investments(a)

   $ 1,569,250        $ 1,070,863,677        $        $ 1,072,432,927  

Short-Term Securities

     62,770,803                            62,770,803  
  

 

 

      

 

 

      

 

 

      

 

 

 
   $ 64,340,053        $ 1,070,863,677        $        $ 1,135,203,730  
  

 

 

      

 

 

      

 

 

      

 

 

 

Derivative Financial Instruments(b)

 

Liabilities:

 

Interest rate contracts

   $ (1,393,066      $        $        $ (1,393,066
  

 

 

      

 

 

      

 

 

      

 

 

 

 

  (a) 

See above Schedule of Investments for values in each industry, state or political subdivision.

 
  (b) 

Derivative financial instruments are futures contracts which are valued at the unrealized appreciation (depreciation) on the instrument.

 

 

 

     19  


Schedule of Investments  (unaudited) (continued)

March 31, 2019

  

BlackRock High Yield Municipal Fund

 

Fair Value Hierarchy as of Period End (continued)

The Fund may hold assets and/or liabilities in which the fair value approximates the carrying amount for financial statement purposes. As of period end TOB Trust Certificates of $76,629,990 are categorized as Level 2 within the disclosure hierarchy

During the period ended March 31, 2019, there were no transfers between levels.

 

 

20