BlackRock MuniYield Quality Fund III, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-06540

Name of Fund:    BlackRock MuniYield Quality Fund III, Inc. (MYI)

Fund Address:     100 Bellevue Parkway, Wilmington, DE 19809

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

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

Date of fiscal year end: 07/31/2018

Date of reporting period: 10/31/2017

 


Item 1 – Schedule of Investments

 


Schedule of Investments  (unaudited)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  

Municipal Bonds

 

Alabama — 1.0%  

City of Birmingham Alabama Special Care Facilities Financing Authority, RB, Children’s Hospital (AGC), 6.00%, 06/01/19(a)

  $ 3,605     $ 3,875,663  

County of Tuscaloosa Board of Education, RB, Special Tax School Warrants, 5.00%, 02/01/43

    2,485       2,844,754  

Homewood Educational Building Authority, Refunding RB, Educational Facilities, Samford University, Series A, 5.00%, 12/01/47

    2,835       3,171,174  
   

 

 

 
      9,891,591  
Alaska — 1.4%  

Alaska Industrial Development & Export Authority, RB, Providence Health Services, Series A, 5.50%, 10/01/41

    2,690       2,969,948  

Borough of Matanuska-Susitna Alaska, RB, Goose Creek Correctional Center (AGC)(a):

   

6.00%, 9/01/19

    6,450       7,013,666  

6.00%, 9/01/19

    3,700       4,023,343  
   

 

 

 
      14,006,957  
Arizona — 0.3%  

City of Phoenix & County of Maricopa Arizona IDA, Refunding RB, S/F Housing, Series A-2, AMT (Fannie Mae), 5.80%, 07/01/40

    120       123,600  

State of Arizona, COP, Department of Administration, Series A (AGM), 5.00%, 10/01/27

    3,075       3,287,513  
   

 

 

 
      3,411,113  
California — 11.4%  

California Health Facilities Financing Authority, RB:

   

St. Joseph Health System, Series A, 5.75%, 7/01/39

    1,550       1,663,274  

Sutter Health, Series B, 5.88%, 8/15/31

    3,200       3,599,328  

California Health Facilities Financing Authority, Refunding RB:

   

Kaiser Permanente, Sub-Series A-2, 5.00%, 11/01/47

    3,625       4,676,214  

St. Joseph Health System, Series A, 5.00%, 7/01/37

    2,965       3,362,488  
Security   Par
(000)
    Value  
California (continued)  

California State University, RB, Systemwide, Series A, 5.50%, 05/01/19(a)

  $ 1,525     $ 1,626,733  

California Statewide Communities Development Authority, RB:

   

Kaiser Permanente, Series A, 5.00%, 4/01/42

    4,030       4,536,208  

St. Joseph Health System, Series E (AGM), 5.25%, 7/01/18 (a)

    4,000       4,112,680  

City & County of San Francisco California Airports Commission, Refunding ARB, Series A, AMT, 5.00%, 05/01/42

    530       609,474  

City of Redding California Electric System Revenue, COP, Refunding Series A, (AGM):

   

5.00%, 6/01/18(a)

    1,100       1,125,597  

5.00%, 6/01/30

    800       816,960  

City of San Jose California, Refunding ARB, Norman Y Mineta San Jose International Airport SJC, AMT:

   

Series A, 5.00%, 3/01/36

    1,160       1,345,496  

Series A, 5.00%, 3/01/37

    1,275       1,475,519  

Series A-1, 5.75%, 3/01/34

    2,300       2,597,137  

County of Alameda Joint Powers Authority, Refunding RB, (AGM), 5.00%, 12/01/17(a)

    6,990       7,013,067  

County of Sacramento California, ARB, Senior Series A, 5.00%, 07/01/18(a)

    10,000       10,265,200  

County of San Joaquin California Transportation Authority, Refunding RB, Limited Tax, Measure K, Series A, 6.00%, 03/01/21(a)

    1,830       2,115,260  

Dublin Unified School District California, GO, CAB, Election of 2004, Series D, 0.00%, 08/01/34(b)

    5,000       1,888,400  

Grossmont Union High School District, GO, CAB, Election of 2004, 0.00%, 08/01/31(b)

    5,110       3,347,816  

Long Beach Unified School District, GO, CAB, Election of 2008, Series B, 0.00%, 08/01/34(b)

    5,000       2,810,300  

Mount San Antonio Community College District, GO, Refunding, CAB, Election of 2008, Series A, 6.25%, 08/01/43(c)

    3,975       3,185,923  
 

 

 

SCHEDULES OF INVESTMENTS      1  


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
California (continued)  

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

  $ 7,620     $ 3,417,418  

Oceanside Unified School District, GO, Series A (AGC), 5.25%, 08/01/33

    2,500       2,573,325  

Poway Unified School District, GO, Refunding, CAB, School Facilities Improvement, Election of 2008, Series B(b):

   

0.00%, 8/01/35

    7,820       4,195,117  

0.00%, 8/01/36

    10,000       5,122,700  

Rio Hondo Community College District California, GO, CAB, Election of 2004, Series C(b):

   

0.00%, 8/01/37

    8,000       3,939,200  

0.00%, 8/01/38

    12,940       6,097,199  

San Diego California Unified School District, GO, CAB, Election of 2008, Series G(b):

   

0.00%, 7/01/34

    1,860       881,008  

0.00%, 7/01/35

    1,970       876,098  

0.00%, 7/01/36

    2,960       1,236,007  

0.00%, 7/01/37

    1,975       774,634  

San Diego California Unified School District, GO, Refunding, CAB, Series R-1, 0.00%, 07/01/31(b)

    3,485       2,301,389  

San Marcos Unified School District, GO, Election of 2010, Series A(a):

   

5.00%, 8/01/21

    1,800       2,014,020  

5.00%, 8/01/21

    1,600       1,788,384  

State of California, GO, Refunding, Various Purposes:

   

5.00%, 9/01/41

    2,700       3,036,501  

5.00%, 10/01/41

    2,555       2,880,149  

State of California, GO, Series 2007-2 (NPFGC), 5.50%, 04/01/30

    10       10,039  

State of California Public Works Board, LRB, Various Capital Projects, Series I, 5.00%, 11/01/38

    5,040       5,786,071  
Security   Par
(000)
    Value  
California (continued)  

Walnut Valley Unified School District, GO, CAB, Election of 2007, Series B, 0.00%, 08/01/36(b)

  $ 6,545     $ 3,177,205  
   

 

 

 
      112,279,538  
Colorado — 1.0%  

Denver Convention Center Hotel Authority, Refunding RB, 5.00%, 12/01/36

    1,500       1,693,620  

Rampart Range Metropolitan District No. 1, Refunding RB, (AGM), 5.00%, 12/01/47

    1,555       1,765,796  

Regional Transportation District, COP, Series A, 5.00%, 06/01/39

    5,655       6,377,596  
   

 

 

 
      9,837,012  
Florida — 14.0%  

City of Jacksonville Florida, Refunding RB, Series A, 5.25%, 10/01/47

    3,915       4,658,067  

County of Brevard Florida Health Facilities Authority, Refunding RB, Health First, Inc. Project, 5.00%, 04/01/39

    4,535       4,986,414  

County of Broward Florida Airport System Revenue, RB, Series A , AMT, 5.00%, 10/01/40

    3,000       3,354,810  

County of Broward Florida School Board, COP, Series A (AGM), 5.25%, 07/01/18(a)

    13,100       13,461,953  

County of Broward Florida Water & Sewer Utility, Refunding RB, Series A, 5.25%, 10/01/18(a)

    2,250       2,335,072  

County of Highlands Florida Health Facilities Authority, RB, Adventist Health System/Sunbelt, Series B, 6.00%, 11/15/37

    1,750       1,902,215  

County of Lee Florida, Refunding ARB, Series A, AMT:

   

5.63%, 10/01/26

    2,600       2,942,940  

5.38%, 10/01/32

    3,440       3,820,017  

County of Miami-Dade Florida, GO, Building Better Communities Program(a):

   

Series B, 6.38%, 7/01/18

    6,000       6,212,340  

Series B-1, 5.75%, 7/01/18

    3,700       3,815,699  

County of Miami-Dade Florida, RB, Seaport:

   

Department, Series A, 6.00%, 10/01/38

    5,695       6,794,704  
 

 

 

2    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Florida (continued)  

County of Miami-Dade Florida, RB, Seaport (continued):

   

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

  $ 1,165     $ 1,383,321  

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

    1,865       2,162,785  

Series B, AMT, 6.00%, 10/01/30

    1,820       2,146,199  

County of Miami-Dade Florida, Refunding RB, Water & Sewer System, Series C (BHAC), 6.00%, 10/01/18(a)

    20,095       20,991,438  

County of Miami-Dade Florida Aviation, Refunding ARB, AMT:

   

5.00%, 10/01/34

    530       600,326  

Miami International Airport, Series A (AGM), 5.50%, 10/01/18(a)

    19,020       19,755,503  

County of Miami-Dade Florida Educational Facilities Authority, RB, University of Miami, Series A, 5.00%, 04/01/40

    14,360       16,164,621  

County of Miami-Dade Florida Health Facilities Authority, Refunding RB, Nicklaus Children’s Hospital Project, 5.00%, 08/01/42

    1,675       1,898,948  

County of Miami-Dade Florida Transit System, RB, Surtax (AGM), 5.00%, 07/01/18(a)

    2,800       2,872,744  

County of Orange Florida Health Facilities Authority, Refunding RB, Presbyterian Retirement Communities Project:

   

5.00%, 8/01/41

    1,550       1,709,821  

5.00%, 8/01/47

    4,590       5,042,987  

County of Palm Beach Florida Solid Waste Authority, Refunding RB, Series B:

   

5.00%, 10/01/21(a)

    50       56,811  

5.00%, 10/01/31

    3,050       3,422,130  

County of Sarasota Florida Public Hospital District, RB, Sarasota Memorial Hospital Project, Series A, 5.63%, 07/01/39

    5,135       5,415,987  
   

 

 

 
      137,907,852  
Georgia — 0.4%  

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

    1,405       1,646,646  
Security   Par
(000)
    Value  
Georgia (continued)  

Private Colleges & Universities Authority, RB, Savannah College of Art & Design:

   

5.00%, 4/01/33

    395       440,698  

5.00%, 4/01/44

    1,775       1,932,034  
   

 

 

 
      4,019,378  
Hawaii — 1.5%  

State of Hawaii Department of Budget & Finance, Refunding RB, Hawaiian Electric Co., Inc. AMT, 4.00%, 03/01/37

    10,275       10,599,485  

State of Hawaii Department of Transportation, COP, AMT:

   

5.00%, 8/01/27

    2,000       2,232,000  

5.00%, 8/01/28

    1,775       1,970,942  
   

 

 

 
      14,802,427  
Illinois — 13.0%  

City of Chicago Illinois, Refunding GARB, O’Hare International Airport, AMT, Series B, 5.00%, 01/01/31

    2,425       2,650,185  

City of Chicago Illinois Midway International Airport, Refunding ARB, 2nd Lien, Series A, AMT, 5.00%, 01/01/34

    3,035       3,394,071  

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

    8,285       9,725,016  

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

   

3rd Lien, Series A, 5.75%, 1/01/21(a)

    7,555       8,588,599  

3rd Lien, Series A, 5.75%, 1/01/39

    1,445       1,624,960  

Senior Lien, Series D, AMT, 5.00%, 1/01/42

    2,865       3,223,211  

City of Chicago Illinois Transit Authority, RB, Sales Tax Receipts, 5.25%, 12/01/36

    1,620       1,747,980  

Cook County Community College District No. 508, GO, City College of Chicago, 5.13%, 12/01/38

    3,250       3,369,145  

County of Cook Illinois Forest Preserve District, GO, Refunding, Limited Tax Project, Series B, 5.00%, 12/15/37

    615       653,198  

Illinois Finance Authority, RB, Carle Foundation, Series A, 5.75%, 08/15/34

    8,700       9,806,205  
 

 

 

SCHEDULES OF INVESTMENTS      3  


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Illinois (continued)  

Illinois Finance Authority, Refunding RB:

   

Northwestern Memorial Hospital, Series A, 6.00%, 8/15/39

  $ 5,250     $ 5,675,722  

Silver Cross Hospital & Medical Centers, Series C, 5.00%, 8/15/44

    985       1,054,364  

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

   

0.00%, 12/15/26

    8,500       6,194,375  

0.00%, 6/15/32

    14,000       7,823,900  

0.00%, 12/15/33

    20,000       10,430,000  

0.00%, 12/15/34

    41,880       20,765,779  

Metropolitan Pier & Exposition Authority, Refunding RB, CAB, McCormick Place Expansion Project, Series B (AGM), 0.00%, 06/15/44(b)

    9,430       3,046,550  

Railsplitter Tobacco Settlement Authority, RB, 6.00%, 06/01/28

    1,700       1,915,594  

Regional Transportation Authority, RB, Series C (NPFGC), 7.75%, 06/01/20

    560       615,961  

State of Illinois, GO:

   

5.25%, 7/01/29

    3,160       3,414,759  

5.25%, 2/01/33

    5,860       6,274,361  

5.50%, 7/01/33

    2,235       2,425,668  

5.25%, 2/01/34

    5,360       5,723,730  

5.50%, 7/01/38

    1,200       1,285,332  

State of Illinois Toll Highway Authority, Refunding RB, Series B, 5.50%, 01/01/18(a)

    4,000       4,029,320  

State of lllinois Toll Highway Authority, RB, Series B (BHAC), 5.50%, 01/01/18(a)

    2,000       2,014,660  
   

 

 

 
      127,472,645  
Indiana — 2.7%  

City of Indianapolis Indiana, Refunding RB, Series B (AGC), 5.25%, 08/15/18(a)

    5,000       5,163,100  

Indiana Finance Authority, RB, Series A:

   

CWA Authority Project, 1st Lien, 5.25%, 10/01/38

    2,900       3,283,467  

Private Activity Bond, Ohio River Bridges East End Crossing Project, AMT, 5.00%, 7/01/44

    1,400       1,506,988  
Security   Par
(000)
    Value  
Indiana (continued)  

Indiana Municipal Power Agency, RB, Series B, 6.00%, 01/01/19(a)

  $ 5,000     $ 5,284,900  

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

   

5.75%, 1/01/19(a)

    565       595,561  

5.75%, 1/01/38

    2,335       2,456,280  

(AGC), 5.25%, 1/01/19(a)

    265       277,805  

(AGC), 5.50%, 1/01/19(a)

    830       872,504  

(AGC), 5.25%, 1/01/29

    1,085       1,137,948  

(AGC), 5.50%, 1/01/38

    3,420       3,585,733  

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

    2,425       2,619,364  
   

 

 

 
      26,783,650  
Iowa — 2.4%  

Iowa Finance Authority, RB, Iowa Health Care Facilities, Series A (AGC), 5.63%, 08/15/19(a)

    12,650       13,647,706  

Iowa Student Loan Liquidity Corp., RB, Senior Series A-2, AMT:

   

5.60%, 12/01/26

    2,295       2,461,686  

5.70%, 12/01/27

    2,290       2,442,193  

5.75%, 12/01/28

    1,210       1,289,606  

5.80%, 12/01/29

    1,545       1,643,895  

5.85%, 12/01/30

    1,610       1,714,022  
   

 

 

 
      23,199,108  
Kentucky — 1.9%  

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

    1,000       1,083,890  

Kentucky Public Transportation Infrastructure Authority, RB, Downtown Crossing Project, Convertible CAB, 1st Tier,
Series C, 6.60%, 07/01/39(c)

    8,225       7,191,693  

Kentucky State Property & Building Commission, Refunding RB, Project No. 93, (AGC):

   

5.25%, 2/01/19(a)

    3,545       3,723,491  

5.25%, 2/01/19(a)

    5,315       5,582,610  

5.25%, 2/01/19(a)

    685       719,490  
 

 

 

4    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Kentucky (continued)  

Kentucky State Property & Building Commission, Refunding RB, Project No. 93, (AGC) (continued):

   

5.25%, 2/01/28

  $ 455     $ 477,559  
   

 

 

 
      18,778,733  
Louisiana — 3.2%  

City of New Orleans Louisiana Aviation Board, ARB, Series B, AMT, 5.00%, 01/01/40

    4,825       5,383,445  

City of New Orleans Louisiana Aviation Board, RB, Series A, AMT (AGM), 5.25%, 01/01/18(a)

    6,405       6,447,209  

City of Shreveport Louisiana Water & Sewer Revenue, RB, Series A (AGM):

   

5.00%, 12/01/37

    760       885,605  

5.00%, 12/01/41

    1,645       1,898,363  

Jefferson Sales Tax District, RB, Series B (AGM):

   

5.00%, 12/01/34

    670       785,810  

5.00%, 12/01/35

    895       1,046,300  

5.00%, 12/01/36

    805       938,042  

5.00%, 12/01/37

    1,005       1,169,207  

Louisiana Local Government Environmental Facilities & Community Development Authority, RB, East Baton Rouge Sewerage Commission Projects, Series A, 5.00%, 02/01/44

    8,155       9,221,266  

West Baton Rouge Parish School District No. 3, GO, (AGM):

   

5.00%, 3/01/36

    1,575       1,813,030  

5.00%, 3/01/37

    1,575       1,810,289  
   

 

 

 
      31,398,566  
Massachusetts — 1.9%  

Massachusetts Development Finance Agency, RB, Emerson College Issue, Series A, 5.00%, 01/01/47

    5,950       6,654,182  

Massachusetts Development Finance Agency, Refunding RB, Emmanuel College Issue, Series A, 5.00%, 10/01/43

    320       358,557  

Massachusetts HFA, RB, M/F Housing, Series B, 7.00%, 12/01/38

    3,150       3,256,564  

Massachusetts HFA, Refunding RB, AMT:

   

Series A, 4.45%, 12/01/42

    2,235       2,332,223  

Series C, 5.35%, 12/01/42

    1,710       1,813,660  
Security   Par
(000)
    Value  
Massachusetts (continued)  

Massachusetts School Building Authority, RB, Dedicated Sales Tax, Senior Series A, 5.00%, 05/15/43

  $ 3,495     $ 3,973,116  
   

 

 

 
      18,388,302  
Michigan — 5.6%  

City of Detroit Michigan Water Supply System Revenue, RB, 2nd Lien, Series B (AGM), 6.25%, 07/01/19(a)

    1,075       1,165,074  

City of Lansing Michigan, RB, Board of Water & Light Utilities System, Series A, 5.50%, 07/01/41

    3,185       3,603,382  

Michigan Finance Authority, Refunding RB:

   

Henry Ford Health System, 3.25%, 11/15/42

    2,505       2,291,223  

Hospital; Trinity Health Credit Group, 5.00%, 12/01/39

    16,040       17,679,769  

Trinity Health Credit Group, 5.00%, 12/01/21(a)

    60       68,435  

Royal Oak Hospital Finance Authority Michigan, Refunding RB, Beaumont Health Credit Group, Series D, 5.00%, 09/01/39

    1,330       1,468,027  

State of Michigan Building Authority, Refunding RB, Facilities Program:

   

Series I, 6.25%, 10/15/18(a)

    1,890       1,981,438  

Series I, 6.25%, 10/15/18(a)

    1,130       1,184,669  

Series I, 6.25%, 10/15/38

    105       109,997  

Series I (AGC), 5.25%, 10/15/24

    1,750       1,883,560  

Series I (AGC), 5.25%, 10/15/25

    3,250       3,496,708  

Series I-A, 5.38%, 10/15/36

    2,075       2,360,188  

Series I-A, 5.38%, 10/15/41

    1,900       2,157,241  

Series II-A (AGM), 5.25%, 10/15/36

    8,040       9,106,828  

Wayne County Airport Authority, Refunding RB, AMT (AGC), 5.38%, 12/01/32

    5,000       5,182,700  
 

 

 

SCHEDULES OF INVESTMENTS      5  


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Michigan (continued)  

Western Michigan University, Refunding RB, General, University and College Improvements (AGM), 5.00%, 11/15/39

  $ 1,080     $ 1,222,636  
   

 

 

 
      54,961,875  
Minnesota — 0.6%  

City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series B (AGC):

   

6.50%, 11/15/18(a)

    845       892,058  

6.50%, 11/15/38

    4,655       4,891,893  
   

 

 

 
      5,783,951  
Missouri — 0.6%  

Health & Educational Facilities Authority of the State of Missouri, Refunding RB, Series C, 5.00%, 11/15/42(d)

    5,000       5,751,350  
Nebraska — 0.8%  

Central Plains Energy Project Nebraska, RB, Gas Project No. 3, 5.25%, 09/01/37

    6,825       7,539,578  
   

 

 

 
Nevada — 1.0%  

City of Las Vegas Nevada, GO, Limited Tax, Performing Arts Center, 6.00%, 04/01/19(a)

    2,250       2,403,248  

County of Clark Nevada, ARB, Las Vegas-McCarran International Airport, Series A:

   

5.25%, 7/01/42

    2,000       2,154,160  

(AGM), 5.25%, 7/01/39

    5,170       5,581,170  
   

 

 

 
      10,138,578  
New Jersey — 8.7%  

New Jersey EDA, RB:

   

Goethals Bridge Replacement Project, AMT, Private Activity Bond, 5.38%, 1/01/43

    4,920       5,476,255  

Goethals Bridge Replacement Project, AMT, Private Activity Bond, 5.13%, 1/01/34

    1,930       2,138,537  

School Facilities Construction Bonds, Series DDD, 5.00%, 6/15/42

    590       632,321  

Series WW, 5.25%, 6/15/33

    445       492,281  

Series WW, 5.00%, 6/15/34

    570       617,606  

Series WW, 5.00%, 6/15/36

    2,635       2,833,363  

Series WW, 5.25%, 6/15/40

    1,025       1,111,889  
Security   Par
(000)
    Value  
New Jersey (continued)  

New Jersey EDA, Refunding RB, School Facilities Construction:

   

Series N-1 (AMBAC), 5.50%, 9/01/24

  $ 6,325     $ 7,341,364  

Series N-1 (NPFGC), 5.50%, 9/01/28

    1,685       2,035,581  

New Jersey Higher Education Student Assistance Authority, Refunding RB, Series 1, AMT:

   

5.50%, 12/01/25

    780       855,605  

5.50%, 12/01/26

    1,125       1,229,974  

5.75%, 12/01/28

    125       136,749  

5.88%, 12/01/33

    6,895       7,537,131  

New Jersey Housing & Mortgage Finance Agency, Refunding RB, M/F Housing, Series 2, AMT, 4.35%, 11/01/33

    2,645       2,794,866  

New Jersey Transportation Trust Fund Authority, RB:

   

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

    18,525       8,227,323  

CAB, Transportation System, Series C (AGC) (AMBAC), 0.00%, 12/15/25(b)

    8,550       6,554,687  

Federal Highway Reimbursement Revenue Notes, Series A, 5.00%, 6/15/28

    4,205       4,740,717  

Federal Highway Reimbursement Revenue Notes, Series A, 5.00%, 6/15/29

    2,145       2,409,693  

Transportation Program, Series AA,
5.25%, 6/15/33

    4,150       4,510,801  

Transportation Program, Series AA,
5.00%, 6/15/38

    3,990       4,270,138  

Transportation System, Series A, 5.50%, 6/15/41

    2,980       3,204,990  

Transportation System, Series A (NPFGC), 5.75%, 6/15/25

    4,000       4,831,920  

Transportation System, Series AA,
5.50%, 6/15/39

    5,625       6,113,419  

Transportation System, Series B, 5.50%, 6/15/31

    1,000       1,095,900  

Transportation System, Series B, 5.00%, 6/15/42

    2,575       2,679,339  
 

 

 

6    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
New Jersey (continued)  

New Jersey Transportation Trust Fund Authority, RB (continued):

   

Transportation System, Series D, 5.00%, 6/15/32

  $ 1,825     $ 1,969,850  
   

 

 

 
      85,842,299  
New Mexico — 0.1%  

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

    1,040       1,170,738  
New York — 3.7%  

City of New York New York Transitional Finance Authority, RB:

   

Fiscal 2009, Series S-4, 5.50%, 1/15/34

    7,250       7,629,102  

Future Tax Secured Fiscal, Sub-Series E-1, 5.00%, 2/01/37

    3,595       4,212,909  

City of New York New York Transitional Finance Authority, Refunding RB, Future Tax Secured, Series B, 5.00%, 11/01/32

    4,150       4,803,459  

Hudson Yards Infrastructure Corp., RB, Senior, Fiscal 2012:

   

5.75%, 2/15/21(a)

    1,155       1,321,805  

5.75%, 2/15/47

    765       871,496  

Metropolitan Transportation Authority, Refunding RB, Series B, 5.00%, 11/15/37

    3,855       4,477,814  

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

    8,300       9,200,467  

State of New York Dormitory Authority, ERB, Series B, 5.25%, 03/15/19(a)

    3,250       3,433,235  
   

 

 

 
      35,950,287  
Ohio — 2.9%  

County of Franklin Ohio, RB, Trinity Health Credit Group, Series 2017, 5.00%, 12/01/46

    5,930       6,721,833  

County of Lucas Ohio, Refunding RB, Promedica Healthcare, Series A, 6.50%, 11/15/37

    3,000       3,572,310  

County of Montgomery Ohio, RB, Catholic Health Initiatives, Series D-2, 5.45%, 10/01/38

    11,135       12,286,582  
Security   Par
(000)
    Value  
Ohio (continued)  

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

   

5.25%, 2/15/32

  $ 1,950     $ 2,279,140  

5.25%, 2/15/33

    2,730       3,189,295  
   

 

 

 
      28,049,160  
Oregon — 0.5%  

Clackamas Community College District, GO, Convertible Deferred Interest Bonds, Series A, 5.00%, 06/15/38(c)

    425       437,155  

County of Clackamas Community College District, GO, Convertible Deferred Interest Bonds, Series A, 5.00%, 06/15/39(c)

    395       405,258  

County of Clackamas Oregon Community College District, GO, Convertible Deferred Interest Bonds, Series A, 5.00%, 06/15/40(c)

    420       429,807  

County of Clackamas Oregon School District No. 12 North Clackamas, GO, CAB, Series A, 0.00%, 06/15/38(b)

    2,800       1,220,072  

Washington & Multnomah Counties Oregon School District No. 48J Beaverton, GO, Convertible CAB, Series D, 5.00%, 06/15/36(c)

    2,340       2,653,022  
   

 

 

 
      5,145,314  
Pennsylvania — 7.6%  

Commonwealth Financing Authority, RB, Series B, 5.00%, 06/01/42

    3,305       3,608,035  

Pennsylvania Economic Development Financing Authority, RB:

   

AMT, 5.00%, 12/31/34

    7,115       8,053,824  

AMT, 5.00%, 6/30/42

    6,805       7,545,588  

Pennsylvania Bridge Finco LP, 5.00%, 12/31/38

    5,850       6,551,532  

Pennsylvania Economic Development Financing Authority, Refunding RB, Series A, 4.00%, 11/15/42

    12,945       13,191,732  

Pennsylvania Higher Educational Facilities Authority, Refunding RB, Thomas Jefferson University, Series A, 5.25%, 09/01/50

    8,075       9,131,775  
 

 

 

SCHEDULES OF INVESTMENTS      7  


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Pennsylvania (continued)  

Pennsylvania Turnpike Commission, RB:

   

Series A, 5.00%, 12/01/38

  $ 1,775     $ 2,026,642  

Series A-1, 5.00%, 12/01/41

    2,320       2,627,400  

Series B, 5.00%, 12/01/40

    920       1,048,312  

Series C, 5.50%, 12/01/33

    1,565       1,837,936  

Sub-Series B-1, 5.00%, 6/01/42

    7,330       8,269,120  

Sub-Series C (AGC), 6.25%, 6/01/18(a)

    5,695       5,865,907  

Subordinate, Special Motor License Fund, 6.00%, 12/01/20(a)

    2,575       2,942,633  

Pennsylvania Turnpike Commission, Refunding RB, Series A-1, 5.00%, 12/01/40

    2,165       2,458,163  
   

 

 

 
      75,158,599  
Rhode Island — 1.7%  

Rhode Island Commerce Corp., RB, Airport Corp., Series D:

   

5.00%, 7/01/41

    295       330,739  

5.00%, 7/01/46

    325       361,790  

Rhode Island Health & Educational Building Corp., RB, Series A, 4.00%, 09/15/42

    5,515       5,724,570  

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

   

4.50%, 6/01/45

    3,000       3,005,640  

5.00%, 6/01/50

    7,465       7,702,238  
   

 

 

 
      17,124,977  
South Carolina — 3.9%  

South Carolina Jobs EDA, Refunding RB, Palmetto Health, Series A (AGM), 6.50%, 08/01/39

    3,600       4,152,888  

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

    6,530       7,292,051  

State of South Carolina Public Service Authority, RB, Santee Cooper:

   

Series A, 5.50%, 12/01/54

    9,350       10,551,662  

Series E, 5.50%, 12/01/53

    2,025       2,275,695  

State of South Carolina Public Service Authority, Refunding RB, Series B:

   

Santee Cooper, 5.00%, 12/01/38

    5,870       6,469,914  
Security   Par
(000)
    Value  
South Carolina (continued)  

State of South Carolina Public Service Authority, Refunding RB, Series B (continued):

   

(AGM), 5.00%, 12/01/56

  $ 7,155     $ 7,965,876  
   

 

 

 
      38,708,086  
Texas — 17.7%  

City of Houston Texas Combined Utility System Revenue, Refunding RB, 1st Lien:

   

Series B, 5.00%, 11/15/36

    7,110       8,332,494  

Combined Series A (AGC), 5.38%, 5/15/19(a)

    3,460       3,680,298  

Combined Series A (AGC), 6.00%, 5/15/19(a)

    5,400       5,795,010  

Combined Series A (AGC), 6.00%, 11/15/35

    300       323,046  

Combined Series A (AGC), 5.38%, 11/15/38

    190       201,168  

Combined Series A (AGM), 5.00%, 11/15/17(a)

    10,000       10,014,700  

City of San Antonio Texas Electric & Gas Revenue, Refunding RB, 5.00%, 02/01/42

    7,450       8,658,167  

City of San Antonio Texas Electric & Gas Revenue, RB, Junior Lien, 5.00%, 02/01/38

    1,450       1,645,489  

County of Midland Texas Fresh Water Supply District No. 1, RB, CAB, City of Midland Project, Series A, 0.00%, 09/15/36(b)

    5,810       2,679,688  

County of Tarrant Texas Cultural Education Facilities Finance Corp., Refunding RB, Cook Children’s Medical Center, 5.25%, 12/01/39

    2,095       2,366,910  

Dallas ISD, GO, School Building (PSF-GTD), 6.38%, 02/15/18(a)

    10,000       10,152,700  

Dallas-Fort Worth International Airport, ARB, Joint Improvement, Series D, AMT, 5.00%, 11/01/38

    10,980       12,172,428  

Dallas-Fort Worth International Airport, Refunding ARB, Series F:

   

5.25%, 11/01/33

    2,745       3,224,771  

5.00%, 11/01/35

    5,000       5,438,850  

Grand Parkway Transportation Corp., RB, Convertible CAB, Series B, 5.80%, 10/01/46(c)

    5,815       5,421,964  

Grand Prairie ISD, GO, Refunding, CAB, 0.00%, 08/15/18(a)(b)

    10,000       5,084,700  

Leander ISD, GO, Refunding, CAB, Series D, 0.00%, 08/15/38(b)

    9,685       3,997,484  
 

 

 

8    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Texas (continued)  

North Texas Tollway Authority, RB, CAB, Special Project System, Series B, 0.00%, 09/01/31(a)(b)

  $ 24,100     $ 6,804,394  

North Texas Tollway Authority, Refunding RB:

   

1st Tier System, Series A, 6.00%, 1/01/19(a)

    5,100       5,384,427  

1st Tier System, Series A, 5.13%, 1/01/28

    2,460       2,476,531  

1st Tier System, Series A, 6.00%, 1/01/28

    1,175       1,241,235  

1st Tier System, Series A (NPFGC), 5.13%, 1/01/18(a)

    17,540       17,657,869  

1st Tier System, Series S (NPFGC), 5.75%, 1/01/18(a)

    8,540       8,606,100  

1st Tier System, Series SE (NPFGC), 5.75%, 1/01/40

    1,460       1,471,300  

1st Tier-Series A, 5.00%, 1/01/43(d)

    7,000       8,085,630  

Series B, 5.00%, 1/01/40

    1,710       1,922,895  

San Antonio Public Facilities Corp., Refunding RB, Convention Center Refinancing & Expansion Project, CAB(b):

   

0.00%, 9/15/35

    680       305,646  

0.00%, 9/15/36

    12,195       5,159,705  

0.00%, 9/15/37

    8,730       3,472,183  

Texas Municipal Gas Acquisition & Supply Corp. III, RB, Natural Gas Utility Improvements:

   

5.00%, 12/15/31

    1,665       1,862,119  

5.00%, 12/15/32

    3,930       4,381,282  

Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien, AMT, Blueridge Transportation Group, 5.00%, 12/31/45

    3,630       3,983,852  

Texas Transportation Commission, Refunding RB, Central Texas Turnpike System, 1st Tier, Series A, 5.00%, 08/15/41

    11,345       12,584,101  
   

 

 

 
      174,589,136  
Utah — 0.4%  

Salt Lake City Corp. Airport Revenue, RB, Series A, AMT, 5.00%, 07/01/42

    3,490       4,017,897  
Security   Par
(000)
    Value  
Washington — 2.2%  

Port of Seattle Washington, RB, Intermediate Lien, Series C, AMT, 5.00%, 04/01/40

  $ 2,830     $ 3,152,932  

Washington Health Care Facilities Authority, RB:

   

MultiCare Health System, Remarketing, Series B, 5.00%, 8/15/44

    1,000       1,113,350  

Providence Health & Services, Series A, 5.25%, 10/01/39

    2,725       2,907,057  

Washington Health Care Facilities Authority, Refunding RB:

   

Catholic Health Initiatives, Series D, 6.38%, 10/01/36

    5,400       5,635,764  

Multicare Health System, Series B, 4.00%, 8/15/41 (d)

    9,000       9,220,500  
   

 

 

 
      22,029,603  
Wisconsin — 1.0%  

Public Finance Authority, RB, KU Campus Development Corp., Central District Development Project, 5.00%, 03/01/46

    560       628,824  

State of Wisconsin Health & Educational Facilities Authority, RB:

   

Ascension Health Senior Credit Group, Series E, 5.00%, 11/15/33

    3,745       4,008,760  

Marshfield Clinic Health System, Inc. Series C, 4.00%, 2/15/42

    5,000       5,030,650  
   

 

 

 
      9,668,234  
   

 

 

 

Total Municipal Bonds — 115.1%

 

    1,133,806,534  
   

 

 

 

Municipal Bonds Transferred to Tender Option Bond Trusts (e)

 

Arizona — 1.0%  

Arizona School Facilities Boar, COP, (AGC), 5.13%, 09/01/18 (a)(f)

    10,000       10,330,400  
California — 4.8%  

California State University, RB, Systemwide, Series A (AGM):

   

5.00%, 5/01/18(a)(f)

    7,793       7,952,353  

5.00%, 11/01/33

    204       208,091  

City of Riverside CA Electric Revenue, RB, Issue, Series D (AGM), 5.00%, 10/01/38

    20,000       20,644,800  
 

 

 

SCHEDULES OF INVESTMENTS      9  


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
California (continued)  

County of San Diego Water Authority Financing Corp., COP, Refunding, Series A (AGM)(a):

   

5.00%, 5/01/18

  $ 7,816     $ 7,969,952  

5.00%, 5/01/18

    1,554       1,585,200  

Los Angeles Community College District California, GO, Refunding Election of 2008, Series A, 6.00%, 08/01/19(a)

    5,248       5,694,234  

San Diego Community College District California, GO, Election of 2002, 5.25%, 08/01/19(a)

    1,047       1,121,737  

University of California, RB, Series O, 5.75%, 05/15/19(a)

    2,205       2,360,053  
   

 

 

 
      47,536,420  
Colorado — 0.3%  

Colorado Health Facilities Authority, Refunding RB, Catholic Health Initiative, Series A, 5.50%, 07/01/34(f)

    2,469       2,596,365  
Connecticut — 0.5%  

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

    3,932       4,443,516  
District of Columbia — 1.5%  

District of Columbia, RB, Series A, 5.50%, 12/01/30(f)

    2,594       2,815,287  

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

    4,277       4,464,836  

Metropolitan Washington Airports Authority, Refunding ARB, Series A, AMT, 5.00%, 10/01/30

    6,880       7,806,598  
   

 

 

 
      15,086,721  
Florida — 5.1%  

City of Miami Beach Florida, RB, 5.00%, 09/01/45

    8,760       9,963,821  

County of Miami-Dade Florida, Refunding RB, Transit System Sales Surtax, 5.00%, 07/01/42

    4,840       5,461,020  

County of Miami-Dade Florida Water & Sewer System, (AGC), 5.00%, 10/01/39

    11,701       12,755,852  

County of Orange Florida School Board, COP, Series A (AGC), 5.50%, 08/01/19(a)

    12,013       12,903,364  
Security   Par
(000)
    Value  
Florida (continued)  

Pinellas County School Board, COP, Master Lease Program, Series A, 5.00%, 07/01/41

  $ 7,880     $ 9,043,640  
   

 

 

 
      50,127,697  
Illinois — 4.5%  

Illinois Finance Authority, RB, University of Chicago, Series B, 6.25%, 07/01/18(a)

    10,000       10,338,650  

State of Illinois, RB, Build Illinois, Series B, 5.25%, 06/15/19(a)(f)

    3,499       3,726,499  

State of Illinois Toll Highway Authority, RB:

   

Senior, Series C, 5.00%, 1/01/36

    10,000       11,359,244  

Series A, 5.00%, 1/01/38

    5,836       6,498,743  

Series A, 5.00%, 1/01/40

    7,621       8,658,375  

Series B, 5.00%, 1/01/40

    2,939       3,330,429  
   

 

 

 
      43,911,940  
Kansas — 1.7%  

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

    13,470       16,339,991  
Massachusetts — 0.5%  

Commonwealth of Massachusetts, GO, Series A, 5.00%, 03/01/46

    4,204       4,809,735  
Michigan — 0.9%  

Michigan Finance Authority, RB, Beumont Health Credit Group, Series A, 5.00%, 11/01/44

    5,591       6,229,501  

Michigan State Building Authority, Refunding RB, Facilities Program, Series I, 5.00%, 10/15/45

    2,410       2,741,773  
   

 

 

 
      8,971,274  
Nevada — 1.7%  

County of Clark Nevada Water Reclamation District, GO, Series B(a):

   

5.50%, 7/01/19

    510       545,978  

5.75%, 7/01/19

    4,813       5,174,032  
 

 

 

10    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Nevada (continued)  

Las Vegas Valley Water District, GO, Refunding Water Improvement, Series A, 5.00%, 06/01/46

  $ 9,840     $ 11,402,444  
   

 

 

 
      17,122,454  
New Jersey — 2.0%  

County of Hudson New Jersey Improvement Authority, RB, Hudson County Vocational-Techincal Schools Project, 5.25%, 05/01/51

    2,320       2,675,128  

Garden State Preservation Trust, RB, Election of 2005, Series A (AGM), 5.75%, 11/01/28

    10,000       12,198,375  

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

    4,961       5,273,860  
   

 

 

 
      20,147,363  
New York — 8.7%  

City of New York New York Water & Sewer System, Refunding RB:

   

2nd General Resolution, Fiscal 2013, Series CC, 5.00%, 6/15/47

    15,521       17,663,859  

2nd General Resolution, Series DD, 5.00%, 6/15/35

    4,740       5,520,188  

Second Generation, 5.00%, 6/15/18(a)

    2,586       2,646,670  

Second Generation, 5.00%, 6/15/37

    14,981       15,333,423  

Metropolitan Transportation Authority, RB, Sub-Series D-1, 5.25%, 11/15/44

    9,850       11,524,451  

Metropolitan Transportation Authority, Refunding RB, Series C-1, 5.25%, 11/15/56

    4,280       5,003,642  

Port Authority of New York & New Jersey, Refunding ARB, Consolidated, 198th Series, 5.25%, 11/15/56

    6,402       7,517,520  

State of New York Urban Development Corp., RB, State Personal Income Tax, Series A-1, 5.00%, 03/15/43

    14,280       16,063,608  
Security   Par
(000)
    Value  
New York (continued)  

Triborough Bridge & Tunnel Authority, GRB, Series A-2, 5.25%, 11/15/34(f)

  $ 4,500     $ 4,696,087  
   

 

 

 
      85,969,448  
Ohio — 0.7%  

County of Montgomery Ohio, RB, Catholic Health Initiatives, Series C-1 (AGM), 5.00%, 04/28/18(a)

    4,990       5,085,184  

State of Ohio, RB, Cleveland Clinic Health Clinic, Series B, 5.50%, 01/01/34

    1,520       1,596,015  
   

 

 

 
      6,681,199  
Pennsylvania — 0.3%  

County of Westmoreland Municipal Authority, Refunding RB, (BAM), 5.00%, 08/15/42

    2,560       2,920,685  
   

 

 

 
Texas — 5.9%  

Aldine Independent School District, GO, Refunding(PSF-GTD), 5.00%, 02/15/42

    9,701       11,280,060  

County of Tarrant Texas Cultural Education Facilities Finance Corp., RB, Baylor Health Care System Project, Series A, 5.00%, 11/15/38

    1,798       1,989,770  

County of Tarrant Texas Cultural Education Facilities Finance Corp., Refunding RB, Texas Health Resources System , Series A, 5.00%, 02/15/41

    9,840       11,276,025  

Dallas Fort Worth International Airport, ARB, Series H, AMT, 5.00%, 11/01/37(f)

    8,868       9,821,285  

Friendswood Independent School District, GO, Refunding Schoolhouse (PSF-GTD), 5.00%, 02/15/18(a)

    12,955       13,099,026  

State of Texas University Systems, Refunding RB, 5.25%, 03/15/18(a)

    10,000       10,153,750  
   

 

 

 
      57,619,916  
Virginia — 0.4%  

University of Virginia, Refunding RB, General, 5.00%, 06/01/18(a)

    3,944       4,029,718  
   

 

 

 
Washington — 2.7%  

Central Puget Sound Regional Transit Authority, 5.00%, 11/01/17(a)

    16,770       17,002,684  
 

 

 

SCHEDULES OF INVESTMENTS      11  


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Washington (continued)  

Washington Health Care Facilities Authority, Refunding RB, Seattle Children’s Hospital, Series B, 5.00%, 10/01/38

  $ 8,205     $ 9,773,714  
   

 

 

 
      26,776,398  
Wisconsin — 2.7%  

State of Wisconsin, Refunding RB, Series A, 6.00%, 05/01/19(a)

    14,780       15,828,308  

Wisconsin Health & Educational Facilities Authority, Refunding RB, Froedtert & Community Health, Inc., Obligated Group: Series C:

   

5.25%, 4/01/19(a)(f)

    7,459       7,884,271  

5.00%, 4/01/42

    2,490       2,691,491  
   

 

 

 
      26,404,070  
   

 

 

 

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 45.9%

 

    451,825,310  
   

 

 

 

Total Long-Term Investments
(Cost — $1,479,924,506) — 161.0%

 

    1,585,631,844  
   

 

 

 

 

Security

  Shares     Value  

Short-Term Securities

   

BlackRock Liquidity Funds, MuniCash, Institutional Class, 0.74%(g)(h)

  $ 27,530,839     $ 27,539,098  
   

 

 

 

Total Short-Term Securities

(Cost — $27,538,344) — 2.8%

 

 

    27,539,098  
   

 

 

 

Total Investments
(Cost — $1,507,462,850) — 163.8%

 

    1,613,170,942  

Liabilities in Excess of Other Assets — (0.9)%

 

    (8,818,737

Liability for TOB Trust Certificates, Including Interest Expense and Fees Payable — (26.8)%

 

    (263,817,913

VRDP Shares at Liquidation Value, Net of Deferred Offering Costs — (36.1)%

 

    (355,927,953
   

 

 

 

Net Assets Applicable to Common Shares — 100.0%

 

  $ 984,606,339  
   

 

 

 
 

Notes to Schedule of Investments

 

(a)  U.S. Government securities, held in escrow, are used to pay interest on this security, as well as to retire the bond in full at the date indicated, typically at a premium to par.
(b) Zero-coupon bond.
(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) When-issued security.
(e) 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.
(f) 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 expire between April 6, 2018 to November 5, 2018, is $32,233,114.
(g) Annualized 7-day yield as of period end.
(h) During the period ended October 31, 2017, 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:

 

Affiliated    Shares
Held at
July 31, 2017
     Net
Activity
    

Shares

Held at
October 31, 2017

     Value at
October 31, 2017
     Income     

Net

Realized
Gain (Loss)(a)

     Change in
Unrealized
Appreciation
(Depreciation)
 

BlackRock Liquidity Funds, MuniCash, Institutional Class

     10,345,820        17,185,019        27,530,839      $ 27,539,098      $ 33,405      $ 412      $ (1,788
        

 

 

    

 

 

    

 

 

    

 

 

    

 

 

 

 

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

 

 

12    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

 

 

Derivative Financial Instruments Outstanding as of Period End

 

Futures Contracts

 

 

 

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

5-Year U.S. Treasury Note

   (105)        December 2017        $ 12,305        $ 96,137  

10-Year U.S Treasury Note

   (176)        December 2017          21,989          312,518  

Long U.S. Treasury Bond

   (226)        December 2017          34,458          616,617  

Ultra Long U.S. Treasury Bond

   (57)        December 2017          9,393          184,467  
                 

 

 

 

Total

 

     $ 1,209,739  
                 

 

 

 

 

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
BHAC    Berkshire Hathaway Assurance Corp.
CAB    Capital Appreciation Bonds
COP    Certificates of Participation
EDA    Economic Development Authority
ERB    Education Revenue Bonds
GARB    General Airport Revenue Bonds
GO    General Obligation Bonds
GTD    Guaranteed
HFA    Housing Finance Agency
IDA    Industrial Development Authority
ISD    Independent School District
LRB    Lease Revenue Bonds
M/F    Multi-Family
NPFGC    National Public Finance Guarantee Corp.
PSF    Permanent School Fund
RB    Revenue Bonds
S/F    Single-Family

 

 

SCHEDULES OF INVESTMENTS      13  


Schedule of Investments  (unaudited) (continued)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

 

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 Fund has the ability to access

 

    Level 2 — other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market–corroborated inputs)

 

    Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Fund’s own assumptions used in determining the fair value of investments 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 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 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)

            $ 1,585,631,844                 $ 1,585,631,844  

Short-Term Securities

   $ 27,539,098                        27,539,098  
  

 

 

      

 

 

      

 

 

      

 

 

 

Total

   $ 27,539,098        $ 1,585,631,844                 $ 1,613,170,942  
  

 

 

      

 

 

      

 

 

      

 

 

 

Derivative Financial Instruments(b)

 

Assets:

 

Interest rate contracts

   $ 1,209,739                          $ 1,209,739  
  

 

 

      

 

 

      

 

 

      

 

 

 

 

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

 

 

14    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (concluded)

October 31, 2017

  

BlackRock MuniYield Quality Fund III, Inc. (MYI)

 

 

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

 

      Level 1        Level 2        Level 3        Total  

Liabilities:

 

TOB Trust Certificates

            $ (263,336,553               $ (263,336,553

VRDP Shares at Liquidation Value

              (356,400,000                 (356,400,000
  

 

 

      

 

 

      

 

 

      

 

 

 

Total

            $ (619,736,553               $ (619,736,553
  

 

 

      

 

 

      

 

 

      

 

 

 

During the period ended October 31, 2017, there were no transfers between levels.

 

 

SCHEDULES OF INVESTMENTS      15  


Item 2 – Controls and Procedures

 

2(a) – The registrant’s principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended.

 

2(b) – There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

 

Item 3 – Exhibits

 

     Certifications – Attached hereto

 


Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

BlackRock MuniYield Quality Fund III, Inc.
By:      

/s/ John M. Perlowski

      
  John M. Perlowski
  Chief Executive Officer (principal executive officer) of
  BlackRock MuniYield Quality Fund III, Inc.

Date: December 21, 2017

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

 

By:      

/s/ John M. Perlowski

      
  John M. Perlowski
  Chief Executive Officer (principal executive officer) of
  BlackRock MuniYield Quality Fund III, Inc.

Date: December 21, 2017

 

By:      

/s/ Neal J. Andrews

      
  Neal J. Andrews
  Chief Financial Officer (principal financial officer) of
  BlackRock MuniYield Quality Fund III, Inc.

Date: December 21, 2017