BLACKROCK MUNI INTERMEDIATE DURATION FUND, 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: 811-21348

Name of Fund: BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: John M. Perlowski, Chief Executive Officer, BlackRock Muni Intermediate Duration Fund, 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: 04/30/2017

Date of reporting period: 07/31/2016


Item 1 – Schedule of Investments

 


Schedule of Investments July 31, 2016 (Unaudited)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

(Percentages shown are based on Net Assets)

 

Municipal Bonds   

Par  

(000)

    Value  

Alabama — 2.8%

    

City of Birmingham Alabama Special Care Facilities Financing Authority, RB, Children’s Hospital (AGC), 6.00%, 6/01/19 (a)

   $ 4,615      $ 5,289,528   

County of Jefferson Alabama, RB, Limited Obligation School, Series A:

    

5.50%, 1/01/21

     5,500        5,532,065   

5.25%, 1/01/23

     6,500        6,537,895   
    

 

 

 
               17,359,488   

Arizona — 3.5%

  

Arizona Board of Regents, Univesity of Arizona, RB, 5.00%, 8/01/28

     2,000        2,336,800   

Arizona Health Facilities Authority, Refunding RB, Phoenix Children’s Hospital, Series A, 5.00%, 2/01/30

     2,685        3,083,319   

Arizona State University, RB, Series D, 5.00%, 7/01/32

     1,350        1,680,669   

City of Phoenix Arizona IDA, RB, Facility, Legacy Traditional Schools Project, Series A, 5.75%, 7/01/24 (b)

     750        867,255   

City of Tucson Arizona, COP, Refunding, (AGC), 4.00%, 7/01/20

     2,325        2,588,818   

County of Pinal Arizona Electric District No. 3, Refunding RB, 5.00%, 7/01/25

     1,600        1,866,016   

Glendale Union School District No. 205, GO, Series C:

    

5.00%, 7/01/24

     1,945        2,383,831   

5.00%, 7/01/27

     500        601,710   

Phoenix-Mesa Gateway Airport Authority, RB, Mesa Project, AMT:

    

5.00%, 7/01/27

     700        812,490   

5.00%, 7/01/32

     1,925        2,195,174   

Scottsdale IDA, Refunding RB, Scottsdale Healthcare, Series C (AGM), 5.00%, 9/01/35

     2,050        2,303,134   

State of Arizona, COP, Department of Administration, Series A (AGM), 4.25%, 10/01/23

     1,000        1,085,590   
    

 

 

 
               21,804,806   

Arkansas — 1.0%

  

Arkansas State University, RB, 5.00%, 12/01/33

     480        572,045   

City of Benton, RB, 5.00%, 6/01/29

     1,055        1,285,549   
Municipal Bonds   

Par  

(000)

    Value  

Arkansas (continued)

  

University of Arkansas, Refunding RB:

    

5.00%, 3/01/31

   $ 2,315      $ 2,862,590   

5.00%, 3/01/34

     1,270        1,554,683   
    

 

 

 
               6,274,867   

California — 3.9%

  

California Health Facilities Financing Authority, RB, Sutter Health, Series B, 5.00%, 8/15/22

     2,135        2,522,631   

California Health Facilities Financing Authority, Refunding RB, 5.00%, 11/15/29

     1,930        2,445,966   

California Infrastructure & Economic Development Bank, Refunding RB, 4.00%, 11/01/31

     1,335        1,504,839   

California Pollution Control Financing Authority, RB, Mandatory Put Bonds, Republic Services, Inc. Project, Series B, AMT, 5.25%, 6/01/23 (c)

     605        637,851   

California Pollution Control Financing Authority, Refunding RB, Pacific Gas, Series C, AMT (NPFGC), 4.75%, 12/01/23

     5,000        5,162,500   

City of San Jose California, Refunding ARB, Series A-1, AMT, 5.00%, 3/01/25

     2,000        2,286,060   

State of California, GO:

    

5.50%, 4/01/28

     15        15,063   

5.00%, 11/01/32

     2,000        2,105,740   

Various Purposes, 5.75%, 4/01/31

     7,000        7,908,250   
    

 

 

 
               24,588,900   

Colorado — 1.0%

  

Denver Urban Renewal Authority, Refunding, Tax Allocation Bond, Stapleton, Senior-Series A-1, 5.00%, 12/01/23

     2,500        3,016,650   

Park Creek Metropolitan District, Refunding, Tax Allocation Bonds, 5.00%, 12/01/34

     500        592,085   
 

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016    1


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds   

Par  

(000)

    Value  

Colorado (continued)

    

University of Northern Colorado, Refunding RB, Series A, 5.00%, 6/01/31

   $ 2,000      $ 2,430,020   
    

 

 

 
               6,038,755   

Connecticut — 3.4%

  

Connecticut State Health & Educational Facility Authority, Refunding RB:

    

5.00%, 12/01/33

     4,015        5,004,577   

Lawrence & Memorial Hospital, Series F, 5.00%, 7/01/31

     4,530        5,109,568   

University of Connecticut, RB, Series A:

    

5.00%, 3/15/31

     5,025        6,234,719   

5.00%, 3/15/32

     4,000        4,943,440   
    

 

 

 
               21,292,304   

Florida — 6.7%

  

County of Broward Florida School Board, COP, Refunding, Series A (AGM), 5.00%, 7/01/24

     10,000        11,636,600   

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

    

5.50%, 10/01/23

     1,000        1,187,170   

(AGM), 5.00%, 10/01/27

     1,635        1,886,136   

County of Miami-Dade Florida, RB, AMT, Series B:

    

6.00%, 10/01/28

     3,470        4,379,105   

6.00%, 10/01/29

     3,480        4,379,162   

County of Miami-Dade Florida Transit System Sales Surtax Revenue, Refunding RB, 5.00%, 7/01/32

     1,500        1,772,190   

County of Miami-Dade Florida Water & Sewer System Revenue, Refunding RB, Series C (BHAC), 5.00%, 10/01/18 (a)

     8,000        8,750,240   

Miami-Dade County Educational Facilities Authority, Refunding RB, Series A, 5.00%, 4/01/32

     5,020        6,075,556   

Midtown Miami Community Development District, Refunding, Special Assessment Bonds, Series A, 4.25%, 5/01/24

     1,665        1,817,964   
Municipal Bonds   

Par  

(000)

    Value  

Florida (continued)

    

Sterling Hill Community Development District, Refunding RB, Special Assessment Bonds, Series B, 5.50%, 11/01/10 (d)(e)

   $ 150      $ 104,991   
    

 

 

 
               41,989,114   

Georgia — 2.0%

  

City of Atlanta Georgia Water & Wastewater Revenue RB, Refunding RB, 5.00%, 11/01/32

     10,000        12,362,100   

Hawaii — 0.9%

  

State of Hawaii Airports System, Refunding ARB, Series A, 5.25%, 7/01/29

     5,000        5,796,500   

Idaho — 0.5%

  

Boise State University, Refunding RB, Series A:

    

5.00%, 4/01/32

     1,300        1,627,106   

5.00%, 4/01/33

     1,000        1,246,670   
    

 

 

 
               2,873,776   

Illinois — 17.4%

  

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

    

5.00%, 1/01/32

     5,000        5,819,800   

AMT, 5.50%, 1/01/32

     1,500        1,783,065   

City of Chicago Illinois O’Hare International Airport, Refunding GARB, AMT, Series C:

    

5.25%, 1/01/28

     1,350        1,614,074   

5.25%, 1/01/29

     3,020        3,596,699   

City of Chicago Illinois O’Hare International Airport, RB, Refunding GARB, 5.00%, 1/01/32

     3,745        4,502,426   

City of Chicago Illinois O’Hare International Airport, Refunding GARB, Senior Lien, Series A, AMT, 5.00%, 1/01/23

     13,000        15,555,670   

City of Chicago Illinois Transit Authority, RB, 5.25%, 12/01/31

     3,700        4,160,169   

Illinois State Toll Highway Authority, Refunding RB, Senior, Series A, 5.00%, 12/01/32

     5,690        7,011,787   

Madison-Macoupin Etc. Counties Community College District No. 536, GO, Refunding, Lewis & Clark Community College:

    

5.00%, 5/01/30

     475        536,413   

5.00%, 5/01/31

     500        564,645   
 

 

                
2    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016   


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds   

Par  

(000)

    Value  

Illinois (continued)

    

Madison-Macoupin Etc. Counties Community College District No. 536, GO, Refunding, Lewis & Clark Community College (continued):

    

5.00%, 5/01/32

   $ 500      $ 563,145   

McHenry County Conservation District, GO, 5.13%, 2/01/17 (a)

     12,695        12,991,047   

Railsplitter Tobacco Settlement Authority, RB:

    

5.50%, 6/01/23

     3,500        4,122,825   

6.25%, 6/01/24

     11,750        11,804,638   

State of Illinois, GO:

    

5.25%, 2/01/30

     5,000        5,566,200   

5.00%, 5/01/30

     10,000        11,017,700   

State of Illinois Toll Highway Authority, RB, Series A, 5.00%, 1/01/34

     9,140        10,664,826   

Village of Hodgkins Illinois, RB, MBM Project, AMT, 5.90%, 11/01/17

     6,000        6,013,080   

Village of Wheeling Illinois, Tax Allocation Bonds, North Milwaukee/Lake-Cook TIF Project, 6.00%, 1/01/25

     1,210        1,211,089   
    

 

 

 
               109,099,298   

Indiana — 5.9%

  

City of Whiting Indiana, RB, BP Products North America, Inc. Project, 5.25%, 1/01/21

     4,800        5,556,192   

County of Jasper Indiana, Refunding RB, Northern Indiana Public Service Co., Series C (NPFGC), 5.85%, 4/01/19

     2,000        2,225,740   

Indiana Finance Authority, RB, Wastewater, 1st Lien, Series A, 5.25%, 10/01/31

     10,000        11,952,900   

Indiana Finance Authority, Refunding RB, US Steel Corp. Project, 6.00%, 12/01/19

     5,000        5,001,450   

Indiana Municipal Power Agency, Refunding RB, Series A, 5.00%, 1/01/33

     10,000        12,343,000   
    

 

 

 
               37,079,282   

Iowa — 1.2%

  

Iowa Higher Education Loan Authority, RB, Private College Facility:

    

5.25%, 4/01/23

     695        823,825   

5.25%, 4/01/24

     730        863,853   

5.25%, 4/01/25

     520        613,787   
Municipal Bonds   

Par  

(000)

    Value  

Iowa (continued)

    

Iowa Higher Education Loan Authority, RB, Private College Facility (continued):

    

5.25%, 4/01/26

   $ 360      $ 423,677   

Iowa Higher Education Loan Authority, Refunding RB:

    

Drake University Project, 4.00%, 4/01/27

     620        726,324   

Drake University Project, 4.00%, 4/01/28

     750        869,685   

Private College Facility, 5.00%, 9/01/22

     2,315        2,454,317   

Private College Facility, Upper Iowa University Project, 5.00%, 9/01/20

     1,000        1,070,030   
    

 

 

 
               7,845,498   

Kansas — 1.4%

  

Kansas Development Finance Authority, Refunding RB, Adventist Health System/Sunbelt Obligated Group, Series C, 5.00%, 11/15/23

     1,500        1,687,125   

Seward County Unified School District No. 480 Liberal, GO, Refunding, 5.00%, 9/01/33

     6,000        7,072,140   
    

 

 

 
               8,759,265   

Louisiana — 3.9%

  

City of Bossier City Louisiana Utilities, Refunding RB, 5.00%, 10/01/32

     2,000        2,425,040   

City of New Orleans Louisiana Aviation Board, Refunding GARB, Restructuring, Series A-2 (AGC), 6.00%, 1/01/23

     850        948,626   

Louisiana Local Government Environmental Facilities & Community Development Authority, Refunding RB, BRCC Facilities Corp. Project:

    

5.00%, 12/01/27

     3,445        4,015,285   

5.00%, 12/01/28

     3,715        4,329,981   

New Orleans Aviation Board, RB, Series A:

    

5.00%, 1/01/32

     1,000        1,193,810   

5.00%, 1/01/33

     1,000        1,190,460   

State of Louisiana Gasoline & Fuels Tax Revenue, Refunding RB, 4.00%, 5/01/34

     5,750        6,365,537   
 

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016    3


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds   

Par  

(000)

    Value  

Louisiana (continued)

    

Terrebonne Levee & Conservation District, RB, Sales Tax, 5.00%, 7/01/28

   $ 3,660      $ 4,276,271   
    

 

 

 
               24,745,010   

Maine — 0.3%

  

Portland Housing Development Corp., Refunding RB, Senior Living, Retirement Facilities, Series A, 6.00%, 2/01/34

     1,965        1,968,478   

Maryland — 0.8%

  

Maryland EDC, RB, Transportation Facilities Project, Series A, 5.13%, 6/01/20

     1,615        1,775,418   

Maryland Health & Higher Educational Facilities Authority, RB, Johns Hopkins Health System, Series B, 5.00%, 7/01/33

     1,140        1,341,928   

Maryland Health & Higher Educational Facilities Authority, Refunding RB, 5.00%, 7/01/33

     1,500        1,795,365   
    

 

 

 
               4,912,711   

Massachusetts — 0.8%

  

Massachusetts Development Finance Agency, RB, Dana-Farber Cancer Institute Issue, Series N, 5.00%, 12/01/33

     1,300        1,611,844   

Massachusetts Development Finance Agency, Refunding RB, 5.00%, 1/01/31

     1,730        2,056,607   

Massachusetts Health & Educational Facilities Authority, Refunding RB, Winchester Hospital, 5.00%, 7/01/25

     1,060        1,197,121   
    

 

 

 
               4,865,572   

Michigan — 3.0%

  

Manistee Area Public Schools, GO, Refunding, (Q-SBLF), 5.00%, 5/01/25

     1,000        1,162,400   

Michigan Finance Authority, Refunding RB, Senior Lien, Detroit Water and Sewer, Series C-3 (AGM), 5.00%, 7/01/31

     4,000        4,771,640   

Michigan State Building Authority, Refunding RB, Facilities Program, Series II-A, 5.00%, 10/15/24

     2,500        2,935,250   
Municipal Bonds   

Par  

(000)

    Value  

Michigan (continued)

    

Michigan State Hospital Finance Authority, Refunding RB, Henry Ford Health System, 5.25%, 11/15/24

   $ 4,900      $ 5,496,575   

State of Michigan, Refunding RB, 5.00%, 3/15/27 (f)

     3,750        4,819,762   
    

 

 

 
               19,185,627   

Minnesota — 1.2%

  

City of Minneapolis, RB, YMCA of the Greater Twin Cities Project:

    

4.00%, 6/01/30

     150        168,401   

4.00%, 6/01/31

     50        55,765   

Minnesota Higher Education Facilities Authority, Refunding RB, University of St. Thomas, Series 8-L, 5.00%, 4/01/35

     500        606,310   

University of Minnesota, RB, Biomedical Science Research Facilities Funding Program:

    

Series B, 5.00%, 8/01/36

     1,000        1,168,520   

Series C, 5.00%, 8/01/27

     1,390        1,710,395   

Series C, 5.00%, 8/01/28

     740        907,669   

Series C, 5.00%, 8/01/29

     1,555        1,903,864   

Series C, 5.00%, 8/01/30

     835        1,020,579   
    

 

 

 
               7,541,503   

Montana — 0.5%

  

Gallatin County School District No 7 Bozeman, GO:

    

4.00%, 12/01/31

     340        396,158   

4.00%, 12/01/32

     305        353,324   

4.00%, 12/01/33

     255        293,696   

4.00%, 12/01/34

     360        412,920   

Montana State Board of Regents, RB, 5.00%, 11/15/30

     1,000        1,231,630   

Yellowstone County School District No. 2 Billings, GO, 5.00%, 6/15/30

     500        614,955   
    

 

 

 
               3,302,683   

Nebraska — 1.0%

  

Douglas County Hospital Authority No. 3, Refunding RB, 5.00%, 11/01/30

     800        959,920   

Lancaster County Hospital Authority No. 1, Refunding RB, Immanuel Obligation Group, 5.50%, 1/01/30

     1,000        1,138,680   

Nebraska Public Power District, Refunding RB:

    

Series A, 5.00%, 1/01/30

     1,000        1,185,040   

Series A, 5.00%, 1/01/32

     2,000        2,352,940   
 

 

                
4    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016   


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds   

Par  

(000)

    Value  

Nebraska (continued)

    

Nebraska Public Power District, Refunding RB (continued):

    

Series A-1, 3.00%, 1/01/33

   $ 900      $ 947,979   
    

 

 

 
               6,584,559   

Nevada — 1.6%

  

Clark County Department of Aviation, Refunding RB, 5.00%, 7/01/33

     5,000        6,045,000   

County of Humboldt Nevada, Refunding RB, Idaho Power Co. Project, 5.15%, 12/01/24

     3,800        4,220,204   
    

 

 

 
               10,265,204   

New Jersey — 20.9%

  

County of Essex New Jersey Improvement Authority, LRB, Newark Project, Series A (AGM), 5.00%, 11/01/20

     2,000        2,230,800   

New Jersey EDA, RB, AMT:

    

Continental Airlines, Inc. Project, 5.13%, 9/15/23

     6,040        6,810,825   

Goethals Bridge Replacement Project, Private Activity Bond, 5.50%, 1/01/26

     1,500        1,801,965   

Goethals Bridge Replacement Project, Private Activity Bond, 5.50%, 1/01/27

     1,000        1,199,810   

New Jersey EDA, Refunding RB:

    

New Jersey American Water Co., Series E, AMT, 4.70%, 12/01/25

     3,000        3,310,830   

School Facilities Construction, Series AA, 4.25%, 12/15/24

     3,850        4,023,096   

School Facilities Construction, Series EE, 5.00%, 9/01/23

     3,465        3,821,375   

New Jersey Educational Facilities Authority, RB, Higher Education Facilities Trust Fund, 5.00%, 6/15/28

     10,000        11,290,900   

New Jersey Educational Facilities Authority, Refunding RB, 5.00%, 7/01/30

     5,000        6,011,750   

New Jersey Higher Education Student Assistance Authority, Refunding RB:

    

Series 1, AMT, 5.50%, 12/01/26

     1,340        1,524,853   

Student Loan, Series 1A, 4.75%, 12/01/21

     1,555        1,660,631   
Municipal Bonds   

Par  

(000)

    Value  

New Jersey (continued)

    

New Jersey State Turnpike Authority, 5.00%, 1/01/32

   $ 12,000      $ 14,477,880   

New Jersey State Turnpike Authority, Refunding RB, Series B, 5.00%, 1/01/29

     10,000        11,992,800   

New Jersey Transportation Trust Fund Authority, RB:

    

Series B, 5.25%, 6/15/26

     3,500        3,900,015   

Transportation Program, Series AA, 5.25%, 6/15/31

     12,000        13,499,640   

Transportation Program, Series AA, 5.25%, 6/15/32

     2,250        2,562,885   

Transportation System, Series A, 5.25%, 6/15/24

     3,185        3,586,469   

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

     13,970        15,841,700   

Transportation System, Series C, 5.25%, 6/15/32

     10,000        11,464,100   

Newark Housing Authority, RB, Series A:

    

5.00%, 12/01/23

     1,230        1,482,298   

5.00%, 12/01/25

     1,345        1,610,557   

South Jersey Port Corp., RB, Marine Terminal, Series O-1 (AGC), 4.63%, 1/01/23

     1,375        1,478,180   

State of New Jersey, GO, Various Purposes, 5.00%, 6/01/28

     5,000        6,060,350   
    

 

 

 
               131,643,709   

New Mexico — 1.3%

  

Albuquerque Bernalillo County Water Utility Authority, Refunding RB, 4.00%, 7/01/33

     4,510        5,098,014   

New Mexico Hospital Equipment Loan Council, Refunding RB, 5.00%, 8/01/31

     2,500        3,080,525   
    

 

 

 
               8,178,539   

New York — 19.4%

  

Build NYC Resource Corp., Refunding RB, 5.00%, 7/01/33

     3,085        3,700,149   

City of New York New York, GO, Refunding, Series A, 5.00%, 8/01/29

     6,125        7,751,616   

City of New York New York, GO:

    

Sub-Series B-1, 5.25%, 9/01/22

     4,250        4,661,485   

Sub-Series-D- 1, 5.13%, 12/01/17 (a)

     2,730        2,893,008   

Sub-Series-D- 1, 5.13%, 12/01/26

     1,885        1,999,174   

Sub-Series I-1, 5.50%, 4/01/21

     5,000        5,627,500   
 

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016    5


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds   

Par  

(000)

    Value  

New York (continued)

    

City of New York New York Transitional Finance Authority, BARB, Fiscal 2009, Series S-3, 5.00%, 1/15/23

   $ 3,560      $ 3,941,846   

County of Nassau New York, GO, Series A:

    

5.00%, 1/01/32

     1,000        1,224,690   

5.00%, 1/01/33

     3,110        3,799,954   

County of Westchester New York Healthcare Corp., Refunding RB, Senior Lien, Remarketing, Series A:

    

5.00%, 11/01/24

     5,470        6,377,145   

5.00%, 11/01/30

     655        748,737   

Long Island Power Authority, Refunding RB, Electric System, Series A, 5.50%, 4/01/19 (a)

     1,000        1,126,850   

Metropolitan Transportation Authority, RB:

    

Sub-Series B-1, 5.00%, 11/15/24

     2,300        2,763,542   

Sub-Series B-4, 5.00%, 11/15/24

     1,500        1,802,310   

Monroe County Industrial Development Corp., Refunding RB, Series A, 5.00%, 7/01/29

     5,695        6,909,117   

New York City Trust for Cultural Resources, Refunding RB, Carnegie Hall, Series A, 5.00%, 12/01/29

     2,750        3,105,025   

New York State Dormitory Authority, RB (a):

    

Education, Series D, 5.00%, 9/15/16

     5        5,029   

North Shore-Long Island Jewish Health System, Series A, 5.50%, 5/01/19

     1,495        1,692,534   

New York State Dormitory Authority, Refunding RB:

    

4.25%, 9/01/19 (a)

     480        529,080   

5.00%, 7/01/30

     1,555        1,931,574   

New York State Thruway Authority, RB, Junior Lien, Series A:

    

5.00%, 1/01/33

     4,500        5,528,205   

5.00%, 1/01/34

     2,000        2,447,480   

Port Authority of New York & New Jersey, ARB, JFK International Air Terminal LLC Project, 5.00%, 12/01/20

     2,475        2,828,009   
Municipal Bonds   

Par  

(000)

    Value  

New York (continued)

    

Port Authority of New York & New Jersey, Refunding ARB, Consolidated, 152nd Series, AMT, 5.00%, 11/01/23

   $ 1,000      $ 1,066,160   

Port Authority of New York & New Jersey, Refunding RB, 5.00%, 11/01/28

     6,185        7,832,931   

State of New York Dormitory Authority, RB:

    

Fordham University, Series A, 5.25%, 7/01/25

     900        1,056,528   

Icahn School of Medicine at Mount Sinai, Series A, 5.00%, 7/01/32

     9,000        10,982,340   

Mental Health Services (AGM), 5.00%, 8/15/18 (a)

     10        10,898   

Mental Health Services (AGM), 5.00%, 8/15/18 (a)

     30        32,693   

Mental Health Services (AGM), 5.00%, 2/15/22

     3,950        4,300,207   

Mental Health Services, 2nd Series (AGM), 5.00%, 8/15/18 (a)

     10        10,898   

Municipal Health Facilities Lease, Sub-Series 2-4, 5.00%, 1/15/27

     6,900        7,331,457   

New York University Hospitals Center, Series A, 5.00%, 7/01/20 (a)

     1,725        2,008,556   

New York University Hospitals Center, Series A, 5.13%, 7/01/20

     1,670        1,952,564   

State of New York Dormitory Authority, Refunding RB, North Shore-Long Island Jewish Obligated Group, Series A, 5.00%, 5/01/32

     3,060        3,738,861   

State of New York Urban Development Corp., RB, Service Contract, Series B, 5.00%, 1/01/21

     6,500        7,047,755   

State of New York Urban Development Corp., Refunding RB, State Personal Income Tax, Series A, 4.00%, 3/15/37

     1,000        1,125,800   
    

 

 

 
               121,891,707   

North Carolina — 0.3%

  

North Carolina Medical Care Commission, Refunding RB, WakeMed, Series A, 5.00%, 10/01/31

     1,500        1,759,785   
 

 

                
6    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016   


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds  

Par  

(000)

    Value  

Ohio — 1.2%

   

State of Ohio Turnpike Commission, RB, Junior Lien, Infrastructure Projects, Series A-1,
5.25%, 2/15/31

  $ 6,000      $ 7,326,360   

Oklahoma — 0.8%

   

Oklahoma City Public Property Authority, Refunding RB:

   

5.00%, 10/01/27

    1,190        1,475,398   

5.00%, 10/01/28

    1,265        1,557,999   

5.00%, 10/01/29

    1,400        1,714,818   
   

 

 

 
              4,748,215   

Oregon — 2.5%

   

County of Yamhill School District No. 40 McMinnville, GO, 4.00%, 6/15/33 (f)

    1,380        1,577,795   

Klamath County School District, GO:

   

5.00%, 6/15/30

    1,000        1,219,130   

5.00%, 6/15/31

    1,000        1,217,680   

Klamath Falls Intercommunity Hospital Authority, Refunding RB, Sky Lakes Medical Center Project:

   

5.00%, 9/01/30

    400        495,520   

5.00%, 9/01/31

    300        370,122   

5.00%, 9/01/32

    540        664,043   

Oregon Health & Science University, Refunding RB, Series B, 5.00%, 7/01/33

    2,500        3,143,725   

Oregon State Facilities Authority, Refunding RB, Reed College Project, Series A, 5.00%, 7/01/29

    1,835        2,096,066   

State of Oregon, GO, Series H, 5.00%, 5/01/36

    2,000        2,366,380   

Umatilla County School District No. 16R Pendleton, GO, Series A, 5.00%, 6/15/32

    2,000        2,451,600   
   

 

 

 
              15,602,061   

Pennsylvania — 5.7%

   

City of Philadelphia Pennsylvania, ARB, Series A, AMT, 5.00%, 6/15/20

    2,895        3,003,910   

City of Pittsburgh Pennsylvania, GO, Refunding, Series B (AGM), 5.25%, 9/01/17

    9,630        9,670,831   

County of Allegheny Pennsylvania, GO, Refunding, Series C-68, 5.00%, 11/01/25

    2,515        2,962,569   
Municipal Bonds  

Par  

(000)

    Value  

Pennsylvania (continued)

   

County of Allegheny Pennsylvania, GO, Series C-67:

   

5.00%, 11/01/25

  $ 2,700      $ 3,190,995   

5.00%, 11/01/26

    2,375        2,779,296   

Pennsylvania Turnpike Commission, RB:

   

Series B, 5.00%, 12/01/32

    1,500        1,828,710   

Sub-Series B, 5.25%, 12/01/31

    4,000        4,681,600   

South Fork Municipal Authority, Refunding RB, Conemaugh Valley Memorial Hospital, Series A (AGC), 6.00%, 7/01/20 (a)

    6,225        7,461,721   
   

 

 

 
              35,579,632   

Puerto Rico — 1.5%

   

Puerto Rico Housing Finance Authority, Refunding RB, M/F Housing, Subordinate, Capital Fund Modernization, 5.13%, 12/01/27

    9,000        9,683,190   

Rhode Island — 1.8%

   

Narragansett Bay Commission, Refunding RB, Series B, 5.00%, 9/01/32

    4,150        5,092,880   

Providence Redevelopment Agency, Refunding RB, Series A, 5.00%, 4/01/29

    1,000        1,159,970   

Rhode Island Health & Educational Building Corp., RB, City of Newport Issue Financing Program, Series C, 5.00%, 5/15/30

    2,305        2,707,684   

Rhode Island Health & Educational Building Corp., Refunding RB, 5.00%, 9/01/32

    2,000        2,424,120   
   

 

 

 
              11,384,654   

South Carolina — 1.9%

   

South Carolina State Public Service Authority, Refunding RB, Series A, 5.00%, 12/01/34

    10,000        12,236,700   

South Dakota — 0.2%

   

South Dakota Health & Educational Facilities Authority, Refunding RB, Regional Health, 5.00%, 9/01/25

    1,000        1,141,140   
 

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016    7


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds  

Par  

(000)

    Value  

Tennessee — 2.0%

   

County of Memphis-Shelby Tennessee Sports Authority, Inc., Refunding RB, Memphis Arena Project:

   

Series A, 5.00%, 11/01/23

  $ 2,695      $ 3,022,955   

Series B, 5.00%, 11/01/22

    1,000        1,123,740   

Knox County Health Educational & Housing Facility Board Tennessee, Refunding RB, Eastowne Village Project, 4.00%, 6/01/31 (c)

    3,275        3,488,399   

Metropolitan Government Nashville & Davidson County Health & Educational Facs Bd, RB, Vanderbilt University Medical Center, Series A, 5.00%, 7/01/35

    4,000        4,866,000   
   

 

 

 
              12,501,094   

Texas — 7.1%

   

City of Grapevine Texas, GO, 5.00%, 2/15/33

    5,685        6,850,084   

City of Houston Texas, Refunding ARB, Subordinate Lien, Series A, AMT:

   

5.00%, 7/01/25

    1,500        1,720,935   

5.00%, 7/01/32

    1,010        1,148,168   

Dallas/Fort Worth International Airport, Refunding RB, AMT:

   

Series E, 5.00%, 11/01/26

    2,185        2,508,161   

Series E, 5.00%, 11/01/27

    4,960        5,686,937   

Series F, 5.00%, 11/01/31

    6,345        7,216,232   

Love Field Airport Modernization Corp., RB, Southwest Airlines Co. Project, AMT, 5.00%, 11/01/28

    1,000        1,148,900   

North Texas Tollway Authority, Refunding RB, Series A, 5.00%, 1/01/33

    2,500        3,085,525   

Red River Education Financing Corp., RB, 5.00%, 3/15/33

    1,340        1,612,315   

San Jacinto River Authority, RB, Special Project (AGM), 5.25%, 10/01/25

    2,910        3,259,986   

Socorro ISD, GO, Refunding, School Building (PSF-GTD), 5.00%, 8/15/32

    2,500        2,882,675   

Via Metropolitan Transit Authority, Refunding RB:

   

5.25%, 8/01/28

    1,585        1,918,928   

5.25%, 8/01/29

    1,720        2,040,866   
Municipal Bonds  

Par  

(000)

    Value  

Texas (continued)

   

Via Metropolitan Transit Authority, Refunding RB (continued):

   

5.25%, 8/01/33

  $ 3,000      $ 3,588,900   
   

 

 

 
              44,668,612   

U.S. Virgin Islands — 0.9%

   

Virgin Islands Public Finance Authority, Refunding RB, Series A, 5.25%, 10/01/24

    5,000        5,805,850   

Vermont — 1.0%

   

University of Vermont & State Agricultural College, Refunding RB, 4.00%, 10/01/30

    5,565        6,355,063   

West Virginia — 1.0%

   

West Virginia Hospital Finance Authority, Refunding RB, Charleston Area Medical Center, Inc., Series A, 5.13%, 9/01/23

    4,000        4,418,960   

West Virginia University, RB, West Virginia University Project, Series B, 5.00%, 10/01/30

    1,500        1,760,310   
   

 

 

 
              6,179,270   

Wisconsin — 1.6%

   

Public Finance Authority, Refunding RB, AMT:

   

National Gypsum Co., 5.25%, 4/01/30

    2,410        2,702,646   

Wisconsin Airport Facilities, Senior Obligated Group, Series B, 5.25%, 7/01/28

    4,765        5,364,675   

Wisconsin Health & Educational Facilities Authority, Refunding RB, The Monroe Clinic, Inc. (f):

   

4.00%, 2/15/31

    450        495,086   

4.00%, 2/15/33

    1,100        1,201,915   
   

 

 

 
              9,764,322   
Total Municipal Bonds — 135.8%             852,985,203   
   
                 

Municipal Bonds Transferred to

Tender Option Bond Trusts (g)

             

Connecticut — 2.0%

   

Connecticut State Health & Educational Facility Authority, Refunding RB, 5.00%, 12/01/33

    10,000        12,464,699   
 

 

                
8    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016   


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds Transferred to

Tender Option Bond Trusts (g)

 

Par  

(000)

    Value  

Illinois — 1.4%

   

Du Page & Will Counties Community School District No. 204, GO, School Building, Series A (NPFGC), 5.25%, 12/30/22

  $ 8,650      $ 9,001,852   

Louisiana — 2.3%

   

State of Louisiana, GO, Series A, 5.00%, 8/01/24

    12,000        14,366,040   

Massachusetts — 1.9%

   

Massachusetts Development Finance Agency, Refunding RB, Partners Healthcare, Series L, 5.00%, 7/01/31

    10,175        11,985,630   

Minnesota — 1.8%

   

State of Minnesota, GO, State Various Purposes, Series A, 4.00%, 8/01/29

    10,525        11,610,431   

New York — 9.3%

   

City of New York New York, GO, Refunding, Series E, 5.00%, 8/01/27

    3,507        3,933,003   

City of New York New York, GO, Series I, 5.00%, 3/01/32

    7,009        8,516,039   

City of New York New York Municipal Water Finance Authority, Refunding RB, Water & Sewer System, Series A:

   

4.75%, 6/15/17 (a)

    1,508        1,562,801   

4.75%, 6/15/30

    6,492        6,727,919   

Metropolitan Transportation Authority, RB, Series B, 5.25%, 11/15/19 (a)

    4,001        4,598,935   

Port Authority of New York & New Jersey, ARB, Consolidated, 169th Series, AMT, 5.00%, 10/15/26

    5,530        6,412,643   

Port Authority of New York & New Jersey, RB, 178th Series, AMT, 5.00%, 12/01/32

    4,009        4,762,817   

Municipal Bonds Transferred to

Tender Option Bond Trusts (g)

 

Par  

(000)

    Value  

New York (continued)

   

Sales Tax Asset Receivable Corp., Refunding RB, Fiscal 2015, Series A, 5.00%, 10/15/31

  $ 5,010      $ 6,280,636   

State of New York Dormitory Authority, Refunding RB, Series E, 5.25%, 3/15/33

    7,000        8,882,580   

State of New York Urban Development Corp., RB, Personal Income Tax, Series A-1, 5.00%, 3/15/32

    5,501        6,649,633   
   

 

 

 
              58,327,006   

Total Municipal Bonds Transferred to

Tender Option Bond Trusts — 18.7%

            117,755,658   
Total Long-Term Investments
(Cost — $889,697,580) — 154.5%
            970,740,861   
   
                 
Short-Term Securities   Shares         

BlackRock Liquidity Funds, MuniCash, Institutional Class, 0.26% (h)(i)

    9,082,048        9,082,048   
Total Short-Term Securities
(Cost — $9,082,048) — 1.4%
            9,082,048   
Total Investments(Cost — $898,779,628*) — 155.9%        979,822,909   

Liabilities in Excess of Other Assets — (0.2)%

      (1,227,422

Liability for TOB Trust Certificates, Including Interest Expense and Fees
Payable — (10.0)%

      (63,172,394

VMTP Shares, at Liquidation Value — (45.7)%

      (287,100,000
   

 

 

 

Net Assets Applicable to Common Shares — 100.0%

  

  $ 628,323,093   
   

 

 

 

 

*   As of July 31, 2016, gross unrealized appreciation and depreciation based on cost for federal income tax purposes were as follows:

 

Tax cost

  $ 837,302,705   
 

 

 

 

Gross unrealized appreciation

  $ 81,088,290   

Gross unrealized depreciation

    (1,669,934
 

 

 

 

Net unrealized appreciation

  $ 79,418,356   
 

 

 

 
 
Notes to Schedule of Investments

 

*   Cost for federal income tax purposes.

 

(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)   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.

 

(c)   Variable rate security. Rate as of period end.

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016    9


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

 

(d)   Non-income producing security.

 

(e)   Issuer filed for bankruptcy and/or is in default of interest payments.

 

(f)   When-issued security.

 

(g)   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.

 

(h)   Current yield as of period end.

 

(i)   During the period ended July 31, 2016, investments in issuers considered to be an affiliate of the Fund for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

 

Affiliate      Shares Held at
April 30,
2016
       Net
Activity
       Shares Held at
July 31,
2016
       Value at
July 31, 2016
       Income  

BlackRock Liquidity Funds, MuniCash, Institutional Class

       12,303,103           (3,221,055        9,082,048         $ 9,082,048         $ 3,650   

 

Portfolio Abbreviations

 

AGC    Assured Guarantee Corp.
AGM    Assured Guaranty Municipal Corp.
AMT    Alternative Minimum Tax (subject to)
ARB    Airport Revenue Bonds
BARB    Building Aid Revenue Bonds
BHAC    Berkshire Hathaway Assurance Corp.
COP    Certificates of Participation
EDA    Economic Development Authority
EDC    Economic Development Corp.
GARB    General Airport Revenue Bonds
GO    General Obligation Bonds
GTD    Guaranteed
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

 

 

Derivative Financial Instruments Outstanding as of Period End

Futures Contracts

 

Contracts

Short

    Issue     Expiration     Notional
Value
   

Unrealized
Appreciation

(Depreciation)

 
  (92)        5-Year U.S. Treasury Note        September 2016      $ 11,225,438      $ 5,405   
          (233)        10-Year U.S. Treasury Note        September 2016      $ 30,999,922        (123,180
  (57)        Long U.S. Treasury Bond        September 2016      $ 9,942,937        (270,703
  Total            $ (388,478
       

 

 

 

 

                
10    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016   


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

 

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. The significant unobservable inputs used by the Global Valuation Committee in determining the price for Fair Valued Investments are typically categorized as Level 3.

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 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 Investments1

            $ 970,740,861                   $ 970,740,861   

Short-Term Securities

  $ 9,082,048                               9,082,048   
 

 

 

 

Total

  $ 9,082,048         $ 970,740,861                   $ 979,822,909   
 

 

 

 
                
Derivative Financial Instruments 2                                         

Assets:

                

Interest rate contracts

  $ 5,405                             $ 5,405   

Liabilities:

                

Interest rate contracts

    (393,883                            (393,883
 

 

 

 

Total

  $ (388,478                          $ (388,478
 

 

 

 

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

       

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

       

 

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016    11


Schedule of Investments (concluded)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

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  

Assets:

                

Cash

  $ 10,010                             $ 10,010   

Cash pledged for futures contracts

    611,900                               611,900   

Liabilities:

                

TOB Trust Certificates

            $ (63,101,848                  (63,101,848

VMTP Shares

              (287,100,000                  (287,100,000
 

 

 

 

Total

  $ 621,910         $ (350,201,848                $ (349,579,938
 

 

 

 

During the period ended July 31, 2016, there were no transfers between levels.

 

                
12    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JULY 31, 2016   


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 Muni Intermediate Duration Fund, Inc.

 

By:  

/s/ John M. Perlowski

 
  John M. Perlowski  
  Chief Executive Officer (principal executive officer) of
  BlackRock Muni Intermediate Duration Fund, Inc.
Date:   September 21, 2016  

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 Muni Intermediate Duration Fund, Inc.
Date:   September 21, 2016  
By:  

/s/ Neal J. Andrews

 
  Neal J. Andrews  
  Chief Financial Officer (principal financial officer) of
  BlackRock Muni Intermediate Duration Fund, Inc.
Date:   September 21, 2016