0001752724-19-084840.txt : 20190729 0001752724-19-084840.hdr.sgml : 20190729 20190729171622 ACCESSION NUMBER: 0001752724-19-084840 CONFORMED SUBMISSION TYPE: NPORT-EX PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20190531 FILED AS OF DATE: 20190729 FILER: COMPANY DATA: COMPANY CONFORMED NAME: BLACKROCK MUNICIPAL BOND TRUST CENTRAL INDEX KEY: 0001167467 IRS NUMBER: 383645602 STATE OF INCORPORATION: DE FISCAL YEAR END: 0831 FILING VALUES: FORM TYPE: NPORT-EX SEC ACT: 1940 Act SEC FILE NUMBER: 811-21036 FILM NUMBER: 19982331 BUSINESS ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 BUSINESS PHONE: 888-441-7762 MAIL ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 FORMER COMPANY: FORMER CONFORMED NAME: BLACKROCK TAX FREE INCOME TRUST DATE OF NAME CHANGE: 20020213 ACCESSION NUMBER: 0001752724-19-078105 NPORT-EX 1 NPORT_5749380535197141.htm EX-BBK

Schedule of Investments  (unaudited)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  

Municipal Bonds — 135.7%

 

Alabama — 0.6%

 

Opelika Utilities Board, Refunding RB, 4.00%, 06/01/41

  $ 960     $ 1,033,229  
   

 

 

 
Arizona — 7.5%  

Arizona Health Facilities Authority, Refunding RB, Phoenix Children’s Hospital, Series A, 5.00%, 02/01/42

    2,200       2,346,652  

City of Phoenix Arizona IDA, Refunding RB, Basis Schools, Inc. Projects, 5.00%, 07/01/45(a)

    460       483,566  

County of Pinal Arizona Electric District No.3, Refunding RB:

   

4.75%, 07/01/21(b)

    680       726,424  

4.75%, 07/01/31

    3,070       3,244,591  

Salt Verde Financial Corp., RB, Senior:

   

5.00%, 12/01/32

    1,500       1,892,700  

5.00%, 12/01/37

    2,065       2,671,552  

University Medical Center Corp., RB, 6.50%, 07/01/19(b)

    500       501,890  

University Medical Center Corp., Refunding RB, 6.00%, 07/01/21(b)

    900       981,459  
   

 

 

 
      12,848,834  
Arkansas — 2.3%  

City of Benton Arkansas, RB, 4.00%, 06/01/39

    505       536,891  

City of Fort Smith Arkansas Water & Sewer Revenue, Refunding RB, 4.00%, 10/01/40

    840       897,061  

City of Little Rock Arkansas, RB, 4.00%, 07/01/41

    1,835       1,935,411  

County of Pulaski Arkansas Public Facilities Board, RB, 5.00%, 12/01/42

    465       514,578  
   

 

 

 
      3,883,941  
California — 19.5%  

California Health Facilities Financing Authority, RB, Sutter Health, Series B, 5.88%, 08/15/20(b)

    1,900       2,002,657  

California Municipal Finance Authority, RB, Orange County Civic Center Infrastructure Improvement Program, 5.00%, 06/01/43

    500       598,720  

California Statewide Communities Development Authority, Refunding RB, Adventist Health System, Series A, 4.00%, 03/01/48

    1,345       1,428,713  

Carlsbad California Unified School District, GO, Election of 2006, Series B, 6.00%, 05/01/34(c)

    1,000       1,205,840  
Security   Par
(000)
    Value  
California (continued)  

City & County of San Francisco Public Utilities Commission Wastewater Revenue, Refunding RB, Sewer System, Series B, 4.00%, 10/01/42

  $ 500     $ 527,130  

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

    2,000       2,136,340  

County of San Diego Regional Airport Authority, ARB, Subordinate, Series B, AMT, 5.00%, 07/01/47

    1,405       1,650,622  

Golden State Tobacco Securitization Corp., Refunding RB, Series A-1, 5.00%, 06/01/47

    525       520,821  

Hartnell Community College District California, GO, CAB, Election of 2002, Series D,
7.00%, 08/01/34(c)

    1,650       1,863,444  

Norwalk-La Mirada Unified School District, GO, Refunding, CAB, Election of 2002, Series E (AGC), 0.00%, 08/01/38(d)

    8,000       4,143,600  

Palomar Community College District, GO, CAB, Election of 2006, Series B:

   

0.00%, 08/01/30(d)

    1,500       1,154,535  

0.00%, 08/01/33(d)

    4,000       1,682,280  

6.20%, 08/01/39(c)

    2,605       2,867,219  

San Diego Community College District, GO, CAB, Election of 2002, 6.00%, 08/01/33(c)

    2,800       3,604,440  

State of California, GO, Refunding, Various Purpose, 5.00%, 02/01/38

    3,000       3,341,400  

State of California, GO, Various Purposes:

   

6.00%, 03/01/33

    1,000       1,034,400  

5.50%, 03/01/40

    2,350       2,419,020  

Visalia Unified School District, COP, (AGM), 4.00%, 05/01/48

    1,225       1,248,189  
   

 

 

 
      33,429,370  
Colorado — 0.6%  

Colorado Health Facilities Authority, RB, Catholic Health Initiatives, Series D, 6.25%, 10/01/33

    1,070       1,077,597  
   

 

 

 
Connecticut — 1.0%  

Connecticut State Health & Educational Facility Authority, Refunding RB, Lawrence & Memorial Hospital, Series F, 5.00%, 07/01/21(b)

    550       588,010  

State of Connecticut, GO, Series E, 5.00%, 09/15/37

    970       1,158,733  
   

 

 

 
      1,746,743  
 

 

 

          1  


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Delaware — 2.2%  

County of Kent Delaware, RB, CHF-Dover, LLC-Delaware State University Project, Series A:

   

5.00%, 07/01/40

  $ 330     $ 369,128  

5.00%, 07/01/48

    900       998,946  

County of Sussex Delaware, RB, NRG Energy, Inc., Indian River Power LLC Project, 6.00%, 10/01/40

    1,200       1,265,064  

Delaware Transportation Authority, RB, U.S. 301 Project, 5.00%, 06/01/55

    950       1,072,968  
   

 

 

 
      3,706,106  
Florida — 3.2%  

County of Miami-Dade Florida, RB, AMT, Seaport Department, Series B, 6.00%, 10/01/31

    4,135       4,775,263  

Stevens Plantation Community Development District, RB, Special Assessment, Series A, 7.10%, 05/01/35(e)(f)

    860       688,000  
   

 

 

 
      5,463,263  
Georgia — 1.7%  

City of Atlanta Georgia Water & Wastewater Revenue, Refunding RB, 5.00%, 11/01/40

    1,500       1,739,505  

County of Georgia Housing & Finance Authority, RB, S/F Housing, Series A:

   

3.95%, 12/01/43

    295       311,871  

4.00%, 12/01/48

    210       221,747  

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

   

5.00%, 05/15/38

    255       326,709  
Security   Par
(000)
    Value  
Georgia (continued)  

5.00%, 05/15/43

  $ 330     $ 382,374  
   

 

 

 
      2,982,206  
Hawaii — 0.3%  

State of Hawaii Department of Budget & Finance, Refunding RB, Special Purpose, Senior Living, Kahala Nui, 5.25%, 11/15/37

    400       441,548  
   

 

 

 
Idaho — 0.3%  

Idaho Health Facilities Authority, RB, St. Lukes Health System Project, Series A, 5.00%, 03/01/39

    500       545,415  
   

 

 

 
Illinois — 7.4%  

Chicago Board of Education, GO:

   

Dedicated Revenues, Series H, 5.00%, 12/01/36

    235       258,437  

Project, Series C, 5.25%, 12/01/35

    775       841,084  

Chicago Board of Education, GO, Refunding:

   

Dedicated Revenues, Series C, 5.00%, 12/01/25

    425       475,520  

Dedicated Revenues, Series C, 5.00%, 12/01/34

    235       260,018  

Dedicated Revenues, Series F, 5.00%, 12/01/23

    310       336,796  

Series C, 5.00%, 12/01/25

    335       374,821  

Chicago Board of Education, GO, Series D:

   

5.00%, 12/01/46

    280       305,166  

5.00%, 12/01/46

    725       762,207  

City of Chicago Illinois, Refunding ARB, O’Hare International Airport Passenger Facility Charge, Series B, AMT, 4.00%, 01/01/29

    1,600       1,660,144  

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

    870       954,964  

City of Chicago Illinois Transit Authority, RB, Sales Tax Receipts, 5.25%, 12/01/40

    665       702,752  

County of Will Illinois, GO, 5.00%, 11/15/45

    600       675,324  

Illinois Finance Authority, RB, Chicago LLC, University of Illinois at Chicago Project, Series A:

   

5.00%, 02/15/37

    300       336,582  

5.00%, 02/15/47

    205       226,431  

5.00%, 02/15/50

    100       110,080  
 

 

 

2        


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Illinois (continued)  

Illinois Finance Authority, Refunding RB:

   

OSF Health Care System, Series A, 5.00%, 11/15/45

  $ 1,205     $ 1,328,657  

OSF Healthcare System, 6.00%, 05/15/39

    110       115,204  

Roosevelt University Project, 6.50%, 04/01/44(b)

    395       401,407  

Roosevelt University Project, 6.50%, 04/01/44(b)

    605       614,813  

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

    1,150       1,251,166  

State of Illinois, GO, Series D, 5.00%, 11/01/28

    645       741,757  
   

 

 

 
      12,733,330  
Iowa(g) — 0.2%  

Iowa Finance Authority, Refunding RB, Iowa Fertilizer Co. Project, Series B, 5.25%, 12/01/50

    250       269,940  
   

 

 

 
Kansas — 2.6%  

County of Seward Kansas Unified School District No. 480 Liberal, GO, Refunding:

   

5.00%, 09/01/22(b)

    3,280       3,646,245  

5.00%, 09/01/39

    720       799,430  
   

 

 

 
      4,445,675  
Kentucky — 3.8%  

County of Boyle Kentucky, Refunding RB, Centre College of Kentucky, 5.00%, 06/01/37

    2,500       2,904,300  

Kentucky Economic Development Finance Authority, RB, Catholic Health Initiatives, Series A, 5.38%, 01/01/40

    1,830       2,030,037  

Kentucky Public Transportation Infrastructure Authority, RB, Downtown Crossing Project, Convertible CAB, 1st Tier, Series C(c):

   

6.45%, 07/01/34

    500       524,940  

6.60%, 07/01/39

    830       858,129  

6.75%, 07/01/43

    270       279,223  
   

 

 

 
      6,596,629  
Louisiana — 1.5%  

City of Alexandria Louisiana Utilities, RB, 5.00%, 05/01/39

    860       968,936  

Louisiana Local Government Environmental Facilities & Community Development Authority, RB, Westlake Chemical Corp. Project, Series A-1, 6.50%, 11/01/35

    1,050       1,115,247  
Security   Par
(000)
    Value  
Louisiana (continued)  

Louisiana Public Facilities Authority, RB, Belle Chasse Educational Foundation Project, 6.50%, 05/01/31

  $ 400     $ 421,408  
   

 

 

 
      2,505,591  
Maryland — 0.6%  

County of Anne Arundel Maryland Consolidated, RB, Special Taxing District, Villages at Two Rivers Project:

   

5.13%, 07/01/36

    170       174,224  

5.25%, 07/01/44

    170       174,024  

Maryland Community Development Administration, Refunding RB, S/F Housing, Series A, 4.10%, 09/01/38

    315       338,770  

Maryland EDC, ARB, AMT, Seagirt Marine Terminal Project, 5.00%, 06/01/49

    250       291,260  
   

 

 

 
      978,278  
Massachusetts — 4.4%  

Massachusetts Development Finance Agency, RB:

   

Emerson College Issue, Series A, 5.00%, 01/01/47

    630       711,642  

Emerson College Issue, 5.00%, 01/01/48

    1,115       1,274,735  

Emerson College Issue, Series A, 5.25%, 01/01/42

    565       650,388  

UMass Darthmouth Student Housing Project, 5.00%, 10/01/48

    830       942,432  

Worcester Polytechnic Institute, 4.00%, 09/01/49

    1,270       1,312,405  

Massachusetts Development Finance Agency, Refunding RB:

   

Atrius Health Issue, Series A, 5.00%, 06/01/39

    55       64,845  

Atrius Health Issue, Series A, 4.00%, 06/01/49

    75       78,854  

Emmanuel College Issue, Series A, 5.00%, 10/01/43

    750       841,980  

International Charter School, 5.00%, 04/15/40

    400       428,428  

Western New England University, 5.00%, 09/01/43

    750       866,767  

Massachusetts Housing Finance Agency, RB, M/F Housing, Series A:

   

3.80%, 12/01/43

    160       167,120  

3.85%, 06/01/46

    205       214,467  
   

 

 

 
      7,554,063  
 

 

 

          3  


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Michigan — 7.2%  

Michigan Finance Authority, RB:

   

Beaumont Health Credit Group, Series A, 5.00%, 11/01/44

  $ 1,555     $ 1,762,826  

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

    240       257,940  

Michigan Finance Authority, Refunding RB, Henry Ford Health System, 5.00%, 11/15/41

    5,560       6,420,799  

Michigan State Hospital Finance Authority, Refunding RB, Trinity Health Credit Group, Series C, 4.00%, 12/01/32

    2,100       2,194,857  

Michigan State Housing Development Authority, RB, S/F Housing, Series A, 3.80%, 10/01/38

    1,690       1,777,491  
   

 

 

 
      12,413,913  
Minnesota — 2.4%  

City of Maple Grove Minnesota, Refunding RB, Maple Grove Hospital, Corp., 4.00%, 05/01/37

    880       943,474  

City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series A, 5.00%, 11/15/49

    560       655,855  

City of Otsego Minnesota, Refunding RB, Kaleidoscope Charter School Project, Series A, 5.00%, 09/01/44

    425       437,997  

City of State Cloud Minnesota, Refunding RB, Centracare Health System, 5.00%, 05/01/48

    280       334,272  

Minneapolis-St. Paul Metropolitan Airports Commission, Refunding ARB, Sub Series D, AMT, 5.00%, 01/01/41

    290       334,889  

Minnesota Higher Education Facilities Authority, RB:

   

Augsburg College, Series B, 4.25%, 05/01/40

    1,045       1,045,220  
Security   Par
(000)
    Value  
Minnesota (continued)  

College of St. Benedict, Series 8-K, 4.00%, 03/01/43

  $ 385     $ 396,019  
   

 

 

 
      4,147,726  
Mississippi — 0.8%  

County of Warren Mississippi, RB, Gulf Opportunity Zone Bonds, International Paper Co. Project, Series A, 5.38%, 12/01/35

    400       433,112  

Mississippi Development Bank, RB, CAB, Special Obligation, Hinds Community College District (AGM), 5.00%, 04/01/21(b)

    845       899,604  
   

 

 

 
      1,332,716  
Missouri — 2.6%  

Missouri Development Finance Board, RB, Annual Appropriation Sewer System, Series B, 5.00%, 11/01/41

    900       965,124  

Missouri State Health & Educational Facilities Authority, RB:

   

A.T. Still University of Health Sciences, 5.25%, 10/01/31

    500       538,230  

A.T. Still University of Health Sciences, 4.25%, 10/01/32

    320       341,069  

A.T. Still University of Health Sciences, 5.00%, 10/01/39

    500       555,875  

Heartland Regional Medical Center, 4.13%, 02/15/43

    300       309,786  

University of Central Missouri, Series C-2, 5.00%, 10/01/34

    1,000       1,124,860  

Missouri State Health & Educational Facilities Authority, Refunding RB, Kansas City University of Medicine and Biosciences, Series A, 5.00%, 06/01/42

    540       630,768  
   

 

 

 
      4,465,712  
Nebraska — 1.0%  

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

    600       650,700  

County of Douglas Nebraska Hospital Authority No. 3, Refunding RB, Health Facilities Nebraska Methodist Health System, 5.00%, 11/01/45

    400       446,720  

Nebraska Public Power District, Refunding RB, Series A:

   

5.00%, 01/01/32

    250       269,540  

4.00%, 01/01/44

    400       411,176  
   

 

 

 
      1,778,136  
 

 

 

4        


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Nevada — 1.0%  

City of Las Vegas Nevada, RB, Special Assessment, No. 809 Summerlin Area, 5.65%, 06/01/23

  $ 610     $ 619,912  

County of Clark Nevada, Refunding ARB, Department of Aviation, Subordinate Lien, Series A-2, 4.25%, 07/01/36

    1,000       1,072,560  
   

 

 

 
      1,692,472  
New Hampshire — 0.2%  

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

   

Series B, 4.63%, 11/01/42

    255       260,546  

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

    145       149,228  
   

 

 

 
      409,774  
New Jersey — 13.5%  

New Jersey EDA, RB:

   

Continental Airlines, Inc. Project, Series B, AMT, 5.63%, 11/15/30

    660       757,284  

Goethals Bridge Replacement Project (AGM), AMT, 5.13%, 07/01/42

    200       222,010  

School Facilities Construction, Series UU, 5.00%, 06/15/40

    425       460,007  

New Jersey EDA, Refunding RB, Special Assessment, Kapkowski Road Landfill Project, 6.50%, 04/01/28

    7,500       8,824,125  

New Jersey Health Care Facilities Financing Authority, Refunding RB:

   

Hospital Asset Transfer Program, 5.00%, 10/01/37

    685       777,694  

St. Barnabas Health Care System, Series A, 4.63%, 07/01/21(b)

    510       542,436  

St. Barnabas Health Care System, Series A, 5.63%, 07/01/21(b)

    1,700       1,842,715  

St. Barnabas Health Care System, Series A, 5.00%, 07/01/25

    500       549,030  

New Jersey State Turnpike Authority, RB, Series E, 5.00%, 01/01/45

    1,860       2,107,287  

New Jersey Transportation Trust Fund Authority, RB:

   

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

    1,070       1,243,094  

CAB, Transportation System, Series A, 0.00%, 12/15/35(d)

    1,000       563,830  
Security   Par
(000)
    Value  
New Jersey (continued)  

Transportation Program, Series AA, 5.00%, 06/15/45

  $ 900     $ 985,662  

Transportation Program, Series AA, 5.00%, 06/15/46

    400       437,792  

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

    140       161,534  

South Jersey Port Corp., RB, Marine Terminal, Series B, AMT, 5.00%, 01/01/35

    625       714,575  

Tobacco Settlement Financing Corp., Refunding RB, Series A:

   

5.00%, 06/01/35

    760       888,805  

5.25%, 06/01/46

    1,810       2,064,540  
   

 

 

 
      23,142,420  
New Mexico — 0.3%  

New Mexico Hospital Equipment Loan Council, Refunding RB, Presbyterian Healthcare Services, 5.00%, 08/01/44

    450       510,498  
   

 

 

 
New York — 5.0%  

City of New York Industrial Development Agency, RB, PILOT (AMBAC), 5.00%, 01/01/39

    925       940,521  

City of New York Water & Sewer System, Refunding RB, 2nd Generation, Fiscal 2013, 5.00%, 06/15/47

    1,000       1,112,490  

Counties of New York Tobacco Trust IV, Refunding RB, Settlement Pass-Through Turbo, Series A, 6.25%, 06/01/41(a)

    900       921,609  

Counties of New York Tobacco Trust VI, Refunding RB, Tobacco Settlement Pass-Through, Series A-2B, 5.00%, 06/01/45

    500       528,670  

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

    1,160       1,159,965  

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

    800       823,376  

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

    405       451,061  
 

 

 

          5  


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
New York (continued)  

New York Transportation Development Corp., Refunding ARB, American Airlines, Inc., AMT, 5.00%, 08/01/31

  $ 1,295     $ 1,361,563  

State of New York Mortgage Agency, Refunding RB, Series 211, 3.75%, 10/01/43

    1,190       1,240,492  
   

 

 

 
      8,539,747  
North Dakota — 0.3%  

County of Burleigh North Dakota, Refunding RB, St. Alexius Medical Center Project, Series A, 5.00%, 07/01/21(b)

    480       513,682  
   

 

 

 
Ohio — 4.0%  

Buckeye Tobacco Settlement Financing Authority, RB, Asset-Backed, Senior Turbo Term, Series A-2, 6.50%, 06/01/47

    2,000       1,999,960  

City of Dayton Ohio Airport Revenue, Refunding ARB, James M. Cox Dayton International Airport, Series A (AGM), AMT, 4.00%, 12/01/32

    2,000       2,071,000  

Northwest Local School District/Hamilton & Butler Counties, GO, School Improvements, 4.00%, 12/01/50

    1,135       1,182,148  

State of Ohio, Refunding RB, University Hospitals Health System, Series A, 5.00%, 01/15/41

    1,500       1,582,335  
   

 

 

 
      6,835,443  
Oklahoma — 0.9%  

Oklahoma City Public Property Authority, Refunding RB, 5.00%, 10/01/39

    720       837,864  

Oklahoma Development Finance Authority, RB, OU Medicine Project, Series B, 5.25%, 08/15/48

    605       701,740  
   

 

 

 
      1,539,604  
Oregon — 1.4%  

Oregon Health & Science University, RB, Series A, 4.00%, 07/01/37

    675       748,798  

State of Oregon State Facilities Authority, Refunding RB, University of Portland Project, Series A, 5.00%, 04/01/45

    1,475       1,670,511  
   

 

 

 
      2,419,309  
Pennsylvania — 6.3%  

Commonwealth Financing Authority, RB, Tobacco Master Settlement Payment:

   

5.00%, 06/01/33

    335       402,804  
Security   Par
(000)
    Value  
Pennsylvania (continued)  

5.00%, 06/01/34

  $ 750     $ 898,298  

(AGM), 4.00%, 06/01/39

    1,365       1,486,321  

County of Allegheny Pennsylvania IDA, Refunding RB, U.S. Steel Corp. Project, 6.55%, 12/01/27

    1,695       1,758,240  

County of Montgomery Higher Education & Health Authority, Refunding RB, Thomas Jefferson University, Series A, 4.00%, 09/01/49

    495       528,002  

Delaware River Port Authority, RB:

   

4.50%, 01/01/32

    1,500       1,638,015  

Series D (AGM), 5.00%, 01/01/20(b)

    2,600       2,653,846  

Pottsville Hospital Authority, Refunding RB, Lehigh Valley Health Network, Series B, 5.00%, 07/01/45

    1,250       1,428,300  
   

 

 

 
      10,793,826  
Puerto Rico — 4.5%  

Children’s Trust Fund, Refunding RB, Tobacco Settlement Asset-Backed Bonds:

   

5.50%, 05/15/39

    315       318,308  

5.63%, 05/15/43

    345       348,564  

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

   

5.00%, 07/01/33

    1,305       1,295,212  

5.13%, 07/01/37

    375       372,188  

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

   

6.00%, 07/01/38

    385       385,000  

6.00%, 07/01/44

    700       700,000  

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

   

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

    15       15,375  

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

    580       559,520  

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

    3,080       3,061,674  

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

    720       688,500  
   

 

 

 
      7,744,341  
Rhode Island — 3.8%  

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

    900       937,665  
 

 

 

6        


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Rhode Island (continued)  

Rhode Island Health & Educational Building Corp., Refunding RB, Series A (AGM), 3.75%, 05/15/32

  $ 1,155     $ 1,228,989  

Rhode Island Housing & Mortgage Finance Corp., RB, (FHA), S/F Housing, Series 3-B, 4.13%, 10/01/49

    480       496,747  

Tobacco Settlement Financing Corp., Refunding RB:

   

Series A, 5.00%, 06/01/40

    1,000       1,088,900  

Series B, 4.50%, 06/01/45

    2,730       2,775,564  
   

 

 

 
      6,527,865  
South Carolina — 0.8%  

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

    1,000       1,115,250  

State of South Carolina Public Service Authority, Refunding RB, Series A, 5.00%, 12/01/36

    175       203,032  
   

 

 

 
      1,318,282  
South Dakota — 0.5%  

City of Rapid City South Dakota, RB, 4.00%, 12/01/48

    740       787,730  
   

 

 

 
Tennessee — 2.9%  

Chattanooga Health Educational & Housing Facility Board, RB, Catholic Health Initiatives, Series A, 5.25%, 01/01/40

    1,950       2,154,808  

City of Johnson Health & Educational Facilities Board, RB, Mountain States Health, Series A, 5.00%, 08/15/42

    800       848,032  

County of Chattanooga-Hamilton Tennessee Hospital Authority, Refunding RB, Series A, 5.00%, 10/01/44

    875       959,928  

County of Memphis-Shelby Tennessee Sports Authority, Inc., Refunding RB, Memphis Arena Project, Series A, 5.38%, 11/01/28

    275       279,282  

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

    675       774,164  
   

 

 

 
      5,016,214  
Texas — 10.9%  

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

    11,690       4,414,027  
Security   Par
(000)
    Value  
Texas (continued)  

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

  $ 1,500     $ 1,534,965  

County of Midland Texas Fresh Water Supply District No. 1, RB, CAB, City of Midland Project, Series A, 0.00%, 09/15/38(d)

    10,760       4,965,202  

El Paso Independent School District, GO, (PSF-GTD), 4.00%, 08/15/43

    890       974,586  

Leander ISD, GO, Refunding CAB, Series D (PSF-GTD)(d):

   

0.00%, 08/15/24(b)

    370       201,606  

0.00%, 08/15/35

    3,630       1,925,534  

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

    760       848,152  

San Antonio Public Facilities Corp., Refunding RB, Convention Center Refinancing and Expansion Project, 4.00%, 09/15/42

    1,355       1,414,037  

San Jacinto College District, GOL, Series A, 5.00%, 02/15/44

    345       414,990  

Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien, LBJ Infrastructure Group LLC, 7.00%, 06/30/40

    2,000       2,109,700  
   

 

 

 
      18,802,799  
Utah — 0.8%  

Salt Lake City Corp. Airport Revenue, ARB, Series A, AMT, 5.00%, 07/01/43

    530       625,575  

State of Utah Charter School Finance Authority, RB, Utah Charter Academies Project, 5.00%, 10/15/48

    360       412,067  

State of Utah Charter School Finance Authority, Refunding RB, Mountainville Academy, 4.00%, 04/15/42

    400       416,132  
   

 

 

 
      1,453,774  
Vermont — 0.6%  

University of Vermont & State Agricultural College, Refunding RB, 4.00%, 10/01/37

    500       531,635  

Vermont Student Assistance Corp., RB, Series A, 4.13%, 06/15/30

    500       529,450  
   

 

 

 
      1,061,085  
Virginia — 1.9%  

Ballston Quarter Community Development Authority, Tax Allocation Bonds, Series A, 5.38%, 03/01/36

    490       521,022  
 

 

 

          7  


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Virginia (continued)  

Virginia Beach Development Authority, Refunding RB, Westminster-Canterbury on Chesapeake Bay:

   

5.00%, 09/01/44

  $ 585     $ 666,344  

4.00%, 09/01/48

    375       396,454  

Virginia HDA, RB, M/F Housing, Rental Housing, Series B, 4.00%, 06/01/53

    385       404,365  

Virginia Small Business Financing Authority, RB, AMT:

   

Covanta Project, 5.00%, 01/01/48(a)(g)

    470       490,370  

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

    725       802,365  
   

 

 

 
      3,280,920  
Washington — 0.4%  

State of Washington Housing Finance Commission, Refunding RB, Horizon House Project, 5.00%, 01/01/38(a)

    600       670,872  
   

 

 

 
West Virginia — 0.8%  

West Virginia Hospital Finance Authority, RB, Improvement, West Virginia University Health System Obligated Group, Series A, 4.00%, 06/01/51

    1,305       1,387,124  
   

 

 

 
Wisconsin — 1.2%  

Public Finance Authority, Refunding RB, National Gypsum Co., AMT, 4.00%, 08/01/35

    280       287,893  

Wisconsin Health & Educational Facilities Authority, Refunding RB, Milwaukee Regional Medical Center Thermal Service, 5.00%, 04/01/44

    800       948,712  

WPPI Energy Power Supply Systems, Refunding RB, Series A, 5.00%, 07/01/37

    665       755,434  
   

 

 

 
      1,992,039  
   

 

 

 

Total Municipal Bonds — 135.7%
(Cost — $211,763,689)

 

    232,819,781  
   

 

 

 
Security   Par
(000)
    Value  

Municipal Bonds Transferred to Tender Option Bond Trusts(h)

 

California — 1.0%  

Los Angeles California Unified School District, GO, Election of 2008, Series B-1, 5.25%, 07/01/42(i)

  $ 1,451     $ 1,776,278  
   

 

 

 
Connecticut — 1.7%  

State of Connecticut Health & Educational Facility Authority, Refunding RB, Trinity Health Credit Group, 5.00%, 12/01/45

    2,611       3,009,336  
   

 

 

 
New Jersey — 0.9%  

New Jersey Transportation Trust Fund Authority, RB, Transportation System, Series B,
5.25%, 06/15/36(i)

    1,400       1,474,124  
   

 

 

 
New York — 13.0%  

City of New York, GO, Refunding Fiscal 2015,
Series B, 4.00%, 08/01/32

    3,990       4,362,766  

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

    330       330,975  

City of New York Water & Sewer System, Refunding RB, 2nd General Resolution, Fiscal 2013:

   

Series BB, 4.00%, 06/15/47

    3,660       3,822,504  

Series CC, 5.00%, 06/15/47

    6,000       6,752,236  

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

   

5.75%, 02/15/21(b)

    1,548       1,656,369  

5.75%, 02/15/47

    952       1,018,948  

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

    2,505       2,728,309  

State of New York Thruway Authority, Refunding RB, Transportation, Personal Income Tax, Series A, 5.00%, 03/15/31

    1,560       1,676,497  
   

 

 

 
      22,348,604  
Texas — 3.9%  

City of Houston Texas Community College, GO, Limited Tax, 4.00%, 02/15/43

    2,999       3,137,190  

City of San Antonio Texas Electric and Gas Systems, RB, Junior Lien, 5.00%, 02/01/43

    1,580       1,737,629  
 

 

 

8        


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Texas (continued)  

City of San Antonio Texas Water System, Refunding RB, Water System, Junior Lien, Series C, 5.00%, 05/15/46

  $ 1,515     $ 1,777,756  
   

 

 

 
    6,652,575  
Virginia — 1.4%  

Hampton Roads Transportation Accountability Commission, RB, Transportation Fund, Senior Lien, Series A, 5.00%, 07/01/48

    1,996       2,387,954  
   

 

 

 
Washington — 2.1%  

Washington Metropolitan Area Transit Authority, RB, Series B, 5.00%, 07/01/42

    2,992       3,549,897  
   

 

 

 
Security   Par
(000)
  Value  

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 24.0%
(Cost — $39,317,269)

  $ 41,198,768  
   

 

 

 

Total Long-Term Investments — 159.7%
(Cost — $251,080,958)

    274,018,549  
   

 

 

 

Other Assets Less Liabilities — 1.3%

    2,190,672  

Liability for TOB Trust Certificates, Including Interest Expense and Fees Payable — (14.4)%

    (24,681,726

VMTP Shares at Liquidation Value, Net of Deferred Offering Costs — (46.6)%

    (79,900,000
   

 

 

 

Net Assets Applicable to Common Shares — 100.0%

  $ 171,627,495  
   

 

 

 
 
(a) 

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.

(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.

(c) 

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.

(d) 

Zero-coupon bond.

(e) 

Issuer filed for bankruptcy and/or is in default.

(f) 

Non-income producing security.

(g) 

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.

(h) 

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.

(i) 

All or a portion of the security is subject to a recourse agreement. The aggregate maximum potential amount the Trust could ultimately be required to pay under the agreements, which expire between August 15, 2020 to January 1, 2026, is $3,415,794.

During the period ended May 31, 2019, investments in issuers considered to be an affiliate/affiliates 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
08/31/18
     Net
Activity
     Shares
Held at
05/31/19
     Value at
05/31/19
     Income      Net
Realized
Gain (Loss)
 (a)
     Change in
Unrealized
Appreciation
(Depreciation)
 

BlackRock Liquidity Funds, MuniCash, Institutional Class*

     2,100,576        (2,100,576           $      $ 22,009      $ 572      $  
           

 

 

    

 

 

    

 

 

    

 

 

 

 

  *

No longer held by the Fund as of period end.

 
  (a) 

Includes net capital gain distributions, if applicable.

 

 

 

          9  


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

 

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

CAB — Capital Appreciation Bonds

COP — Certificates of Participation

EDA — Economic Development Authority

EDC — Economic Development Corp.

FHA — Federal Housing Administration

GARB — General Airport Revenue Bonds

GO — General Obligation Bonds

GTD — Guaranteed

IDA — Industrial Development Authority

ISD — Independent School District

M/F — Multi-Family

NPFGC — National Public Finance Guarantee Corp.

PILOT — Payment in Lieu of Taxes

PSF — Permanent School Fund

RB — Revenue Bonds

S/F — Single-Family

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

     27          09/19/19        $ 3,422        $ (22,527

U.S. Treasury Long Bond

     72          09/19/19          11,068          (115,192

5-Year U.S. Treasury Note

     16          09/30/19          1,878          (7,650
                 

 

 

 
                  $ (145,369
                 

 

 

 

 

 

10        


Schedule of Investments  (unaudited) (continued)

May 31, 2019

  

BlackRock Municipal Bond Trust (BBK)

 

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. 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 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 Trust’s investments and derivative financial instruments categorized in the disclosure hierarchy:

 

      Level 1        Level 2        Level 3        Total  

Assets:

 

Investments:

 

Long-Term Investments

   $        $ 274,018,549        $        $ 274,018,549  
  

 

 

      

 

 

      

 

 

      

 

 

 

Derivative Financial Instruments 1

 

Liabilities:

 

Interest rate contracts

   $ (145,369      $        $        $ (145,369
  

 

 

      

 

 

      

 

 

      

 

 

 

 

  (a) 

See above Schedule of Investments for values in each state.

 
  (b) 

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

 

The Trust may hold assets and/or liabilities in which the fair value approximates the carrying amount for financial statement 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

   $        $ (24,524,266      $        $ (24,524,266

VMTP Shares at Liquidation Value

              (79,900,000                 (79,900,000
  

 

 

      

 

 

      

 

 

      

 

 

 
   $        $ (104,424,266      $        $ (104,424,266
  

 

 

      

 

 

      

 

 

      

 

 

 

 

 

          11