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: 04/30/2016

Date of reporting period: 01/31/2016


Item 1 – Schedule of Investments


Schedule of Investments January 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      $ 5,379,890   

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

    

5.50%, 1/01/21

     5,500        5,553,900   

5.25%, 1/01/23

     6,500        6,563,700   
    

 

 

 
        17,497,490   

Arizona — 4.4%

  

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

     2,000        2,338,520   

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

     2,685        2,989,023   

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

     1,350        1,634,256   

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

     750        820,035   

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

     2,325        2,595,490   

County of Maricopa Arizona IDA, RB, Arizona Charter School Project 1, Series A, 6.63%, 7/01/20

     80        78,573   

County of Pima Arizona IDA, RB, Arizona Charter Schools Project, Series K, 6.38%, 7/01/31

     895        902,715   

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

     1,600        1,826,048   

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

    

5.00%, 7/01/24

     1,945        2,360,569   

5.00%, 7/01/27

     500        591,815   

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

    

5.00%, 7/01/27

     700        805,469   

5.00%, 7/01/32

     1,925        2,160,273   

Salt River Project Agricultural Improvement & Power District, RB, Series A, 5.00%, 1/01/25

     4,000        4,324,600   

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

     2,050        2,285,914   
Municipal Bonds   

Par  

(000)

    Value  

Arizona (continued)

  

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

   $ 1,000      $ 1,087,780   
    

 

 

 
        26,801,080   

Arkansas — 1.0%

  

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

     480        558,614   

City of Benton, RB, 5.00%, 6/01/29

     1,055        1,250,059   

University of Arkansas, Refunding RB:

    

5.00%, 3/01/31

     2,315        2,793,348   

5.00%, 3/01/34

     1,270        1,514,158   
    

 

 

 
        6,116,179   

California — 5.1%

  

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

     2,135        2,542,038   

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

     1,930        2,401,827   

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

     1,335        1,468,420   

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

     605        648,124   

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

     5,000        5,248,150   

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

     2,000        2,272,860   

San Francisco Bay Area Rapid Transit District, GO, Refunding Series D, 4.00%, 8/01/33

     6,000        6,714,120   

State of California, GO:

    

5.50%, 4/01/28

     15        15,066   

5.00%, 11/01/32

     2,000        2,143,200   

Various Purposes, 5.75%, 4/01/31

     7,000        8,026,060   
    

 

 

 
        31,479,865   

Colorado — 1.0%

  

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

     2,500        2,978,975   
 

 

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


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds   

Par  

(000)

    Value  

Colorado (continued)

    

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

   $ 500      $ 574,520   

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

     2,000        2,387,480   
    

 

 

 
        5,940,975   

Connecticut — 1.8%

    

Connecticut State Development Authority, RB, Learjet, Inc. Project, AMT, 7.95%, 4/01/26

     1,160        1,166,739   

Connecticut State Health & Educational Facility Authority, Refunding RB:

    

5.00%, 12/01/33

     4,015        4,756,129   

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

     4,530        5,032,830   
    

 

 

 
        10,955,698   

Florida — 6.8%

    

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

     10,000        11,570,400   

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

    

5.50%, 10/01/23

     1,000        1,193,090   

(AGM), 5.00%, 10/01/27

     1,635        1,887,166   

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

    

6.00%, 10/01/28

     3,470        4,334,238   

6.00%, 10/01/29

     3,480        4,330,895   

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

     1,500        1,757,625   

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

     8,000        8,897,760   

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

     5,020        5,841,523   

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

     1,835        1,967,395   
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      $ 104,978   
    

 

 

 
        41,885,070   

Georgia — 2.5%

    

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

     10,000        11,999,000   

Fulton County Development Authority, Refunding RB, Robert Woodruff, Series B, 5.25%, 3/15/24

     3,000        3,322,080   
    

 

 

 
        15,321,080   

Guam — 0.4%

    

Territory of Guam, RB, Section 30, Series A, 5.38%, 12/01/24

     2,100        2,343,264   

Hawaii — 0.9%

    

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

     5,000        5,840,200   

Illinois — 17.8%

    

Chicago O’Hare International Airport, Refunding RB, 5.00%, 1/01/32

     3,745        4,362,476   

City of Chicago Illinois Midway International Airport, Refunding ARB, 2nd Lien, Series A, AMT, 5.50%, 1/01/32

     1,500        1,732,800   

City of Chicago Illinois Midway International Airport, Refunding GARB, 2nd Lien, Series A, 5.00%, 1/01/32

     5,000        5,632,750   

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

    

Series C, 5.25%, 1/01/28

     1,350        1,564,150   

Series C, 5.25%, 1/01/29

     3,020        3,478,496   

Senior Lien, Series A, 5.00%, 1/01/23

     13,000        15,407,730   

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

     3,700        4,123,835   

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

     5,690        6,800,460   

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

    

5.00%, 5/01/30

     475        535,121   
 

 

                
2    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JANUARY 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%, 5/01/31

   $ 500      $ 563,285   

5.00%, 5/01/32

     500        560,025   

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

     12,695        13,287,349   

Railsplitter Tobacco Settlement Authority, RB:

    

5.50%, 6/01/23

     3,500        4,141,830   

6.25%, 6/01/24

     12,750        13,000,665   

State of Illinois, GO:

    

5.25%, 2/01/30

     5,000        5,506,950   

5.00%, 5/01/30

     10,000        10,862,700   

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

     9,140        10,397,207   

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

     6,000        6,011,640   

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

     1,210        1,210,726   
    

 

 

 
        109,180,195   

Indiana — 5.7%

    

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

     4,800        5,581,536   

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

     2,000        2,247,440   

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

     10,000        11,768,000   

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

     5,000        3,489,050   

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

     10,000        11,926,600   
    

 

 

 
        35,012,626   

Iowa — 1.0%

    

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

    

5.25%, 4/01/23

     695        825,757   

5.25%, 4/01/24

     730        865,437   

5.25%, 4/01/25

     520        615,056   
Municipal Bonds   

Par  

(000)

    Value  

Iowa (continued)

    

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

    

5.25%, 4/01/26

   $ 360      $ 424,631   

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

    

5.00%, 9/01/22

     2,315        2,424,939   

Upper Iowa University Project, 5.00%, 9/01/20

     1,000        1,062,610   
    

 

 

 
        6,218,430   

Kansas — 1.4%

    

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

     1,500        1,694,940   

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

     6,000        6,831,600   
    

 

 

 
        8,526,540   

Louisiana — 4.3%

    

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

     2,000        2,358,560   

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

     850        960,253   

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

    

5.00%, 12/01/27

     3,445        3,947,178   

5.00%, 12/01/28

     3,715        4,237,106   

Louisiana Public Facilities Authority, Refunding RB, Entergy Gulf States Louisiana LLC Project, Series A, 5.00%, 9/01/28

     2,000        2,029,180   

New Orleans Aviation Board, RB, Series A:

    

5.00%, 1/01/32

     1,000        1,164,030   

5.00%, 1/01/33

     1,000        1,160,610   

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

     5,750        6,187,690   
 

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JANUARY 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      $ 4,205,450   
    

 

 

 
        26,250,057   

Maine — 0.3%

    

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

     1,965        1,967,967   

Maryland — 0.8%

    

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

     1,750        1,916,582   

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

     1,140        1,318,353   

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

     1,500        1,732,650   
    

 

 

 
        4,967,585   

Massachusetts — 0.5%

    

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

     1,730        1,978,653   

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

     1,060        1,190,836   
    

 

 

 
        3,169,489   

Michigan — 2.3%

    

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

     1,000        1,162,310   

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

     4,000        4,620,400   

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

     2,500        2,934,475   
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      $ 5,521,908   
    

 

 

 
        14,239,093   

Minnesota — 1.1%

    

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

    

Series B, 5.00%, 8/01/36

     1,000        1,158,630   

Series C, 5.00%, 8/01/27

     1,390        1,681,080   

Series C, 5.00%, 8/01/28

     740        890,864   

Series C, 5.00%, 8/01/29

     1,555        1,861,661   

Series C, 5.00%, 8/01/30

     835        995,203   
    

 

 

 
        6,587,438   

Mississippi — 0.6%

    

Mississippi Business Finance Corp., Refunding RB, System Energy Resource, Inc. Project, 5.88%, 4/01/22

     3,610        3,645,739   

Missouri — 0.8%

    

Missouri Joint Municipal Electric Utility Commission Power, RB, Prairie State Project, Series A (BHAC), 5.00%, 1/01/17 (a)

     5,000        5,210,550   

Montana — 0.6%

    

Gallatin County School District No 7 Bozeman, GO:

    

4.00%, 12/01/31

     340        386,536   

4.00%, 12/01/32

     305        344,369   

4.00%, 12/01/33

     255        286,192   

4.00%, 12/01/34

     360        401,274   

4.00%, 12/01/35

     370        410,659   

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

     1,000        1,194,190   

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

     500        606,610   
    

 

 

 
        3,629,830   

Nebraska — 1.1%

    

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

     800        926,352   

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

     1,000        1,139,900   

Nebraska Public Power District, Refunding RB:

    

Series A, 5.00%, 1/01/30

     1,000        1,174,070   
 

 

                
4    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JANUARY 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, 5.00%, 1/01/32

   $ 2,000      $ 2,343,240   

Series A-1, 3.00%, 1/01/33

     900        912,123   
    

 

 

 
        6,495,685   

Nevada — 1.6%

    

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

     5,000        5,820,100   

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

     3,800        4,244,866   
    

 

 

 
        10,064,966   

New Jersey — 21.1%

    

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

     2,000        2,231,000   

New Jersey EDA, RB, AMT:

  

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

     6,040        6,699,930   

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

     1,500        1,756,875   

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

     1,000        1,157,530   

New Jersey EDA, Refunding RB:

  

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

     3,000        3,284,250   

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

     3,850        3,962,805   

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

     3,465        3,768,084   

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

     10,000        10,992,000   

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

     5,000        5,880,450   

New Jersey Health Care Facilities Financing Authority, Refunding RB, Hackensack University Medical, Series B (AGM), 4.00%, 1/01/24

     635        685,165   
Municipal Bonds   

Par  

(000)

    Value  

New Jersey (continued)

    

New Jersey Higher Education Student Assistance Authority, Refunding RB:

    

Series 1, AMT, 5.50%, 12/01/26

   $ 1,515      $ 1,707,981   

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

     1,705        1,817,649   

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

     12,000        14,164,680   

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

     10,000        11,781,600   

New Jersey Transportation Trust Fund Authority, RB:

    

Series B, 5.25%, 6/15/26

     3,500        3,843,210   

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

     12,000        13,166,400   

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

     2,250        2,484,698   

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

     3,185        3,502,099   

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

     13,970        15,350,515   

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

     10,000        11,043,900   

Newark Housing Authority, RB, Series A:

    

5.00%, 12/01/23

     1,230        1,472,851   

5.00%, 12/01/25

     1,345        1,586,898   

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

     1,375        1,485,481   

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

     5,000        5,947,650   
    

 

 

 
        129,773,701   

New Mexico — 1.3%

    

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

     4,510        4,982,964   

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

     2,500        2,990,800   
    

 

 

 
        7,973,764   

New York — 21.1%

    

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

     3,085        3,531,245   

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

     6,125        7,521,990   

City of New York New York, GO:

    

Series D1, 5.13%, 12/01/26

     4,615        4,996,291   
 

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JANUARY 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, GO (continued):

    

Sub-Series B-1, 5.25%, 9/01/22

   $ 4,250      $ 4,734,755   

Sub-Series I-1, 5.50%, 4/01/21

     5,000        5,752,550   

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

     3,560        3,996,492   

County of Nassau New York, GO, Series A (f):

    

5.00%, 1/01/32

     1,000        1,187,050   

5.00%, 1/01/33

     3,110        3,682,862   

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

    

5.00%, 11/01/24

     5,470        6,362,048   

5.00%, 11/01/30

     655        738,938   

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

     1,000        1,143,360   

Metropolitan Transportation Authority, RB:

    

Sub-Series B-1, 5.00%, 11/15/24

     2,300        2,778,837   

Sub-Series B-4, 5.00%, 11/15/24

     1,500        1,812,285   

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

     5,695        6,820,218   

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

     2,750        3,124,495   

New York Convention Center Development Corp., Refunding RB, 5.00%, 11/15/32

     11,000        13,290,530   

New York State Dormitory Authority, RB:

    

Education, Series D, 5.00%, 9/15/16 (a)

     5        5,144   

New York University Hospitals Center, Series A, 5.13%, 7/01/23

     1,670        1,924,992   

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

     1,495        1,718,248   

New York State Dormitory Authority, Refunding RB:

    

4.25%, 9/01/19 (a)

     480        533,650   

5.00%, 7/01/30

     1,555        1,888,983   
Municipal Bonds   

Par  

(000)

    Value  

New York (continued)

    

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

   $ 2,475      $ 2,817,590   

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

     1,000        1,078,950   

Port Authority of New York & New Jersey, Refunding RB:

    

5.00%, 11/01/28

     6,185        7,656,968   

Consolidated, 153rd Series, 5.00%, 7/15/24

     2,010        2,216,668   

State of New York Dormitory Authority, RB:

    

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

     900        1,062,009   

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

     9,000        10,515,960   

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

     10        11,068   

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

     30        33,203   

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

     3,950        4,371,505   

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

     10        11,068   

Mount Sinai School of Medicine, Series A (NPFGC), 5.15%, 7/01/24

     1,000        1,188,280   

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

     6,900        7,459,314   

New York University Hospitals Center, Series A, 5.00%, 7/01/22

     1,725        1,977,609   

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

     3,060        3,616,369   
 

 

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


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds   

Par  

(000)

    Value  

New York (continued)

    

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

   $ 7,000      $ 7,713,790   
    

 

 

 
        129,275,314   

North Carolina — 0.5%

    

County of Gaston North Carolina Industrial Facilities & Pollution Control Financing Authority, RB, Exempt Facilities, National Gypsum Co. Project, AMT, 5.75%, 8/01/35

     1,105        1,107,133   

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

     1,500        1,694,640   
    

 

 

 
        2,801,773   

Ohio — 1.2%

    

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

     6,000        7,188,120   

Oklahoma — 0.8%

    

Oklahoma City Public Property Authority, Refunding RB:

    

5.00%, 10/01/27

     1,190        1,443,589   

5.00%, 10/01/28

     1,265        1,521,011   

5.00%, 10/01/29

     1,400        1,673,756   
    

 

 

 
        4,638,356   

Oregon — 1.7%

    

Klamath County School District, GO:

    

5.00%, 6/15/30

     1,000        1,185,280   

5.00%, 6/15/31

     1,000        1,178,520   

Oregon State Facilities Authority, Refunding RB, Series A:

    

Reed College Project, 5.00%, 7/01/29

     1,835        2,098,653   

5.00%, 11/15/29

     1,000        1,182,080   

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

     2,000        2,339,560   

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

     2,000        2,394,140   
    

 

 

 
        10,378,233   

Pennsylvania — 5.8%

    

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

     2,895        3,061,086   
Municipal Bonds   

Par  

(000)

    Value  

Pennsylvania (continued)

    

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

   $ 9,630      $ 9,911,292   

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

     2,515        2,966,870   

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

    

5.00%, 11/01/25

     2,700        3,194,883   

5.00%, 11/01/26

     2,375        2,778,988   

Pennsylvania Turnpike Commission, RB:

    

Series B, 5.00%, 12/01/32

     1,500        1,772,130   

Sub-Series B, 5.25%, 12/01/31

     4,000        4,526,640   

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

     6,225        7,559,080   
    

 

 

 
        35,770,969   

Puerto Rico — 1.6%

    

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

     9,000        9,751,410   

Rhode Island — 1.8%

    

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

     4,150        4,961,532   

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

     1,000        1,132,720   

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

     2,305        2,661,307   

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

     2,000        2,392,480   
    

 

 

 
        11,148,039   

South Carolina — 1.9%

    

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

     10,000        11,781,100   

 

 

 

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


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

Municipal Bonds   

Par  

(000)

    Value  

South Dakota — 0.2%

    

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

   $ 1,000      $ 1,137,800   

Tennessee — 1.3%

    

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

    

Series A, 5.00%, 11/01/23

     2,695        3,034,786   

Series B, 5.00%, 11/01/22

     1,000        1,129,200   

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

     3,350        3,588,386   
    

 

 

 
        7,752,372   

Texas — 7.4%

    

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

     5,685        6,613,645   

City of Houston Texas, Refunding ARB, Series A:

    

Senior Lien, 5.25%, 7/01/29

     4,055        4,458,756   

Subordinate Lien, AMT, 5.00%, 7/01/25

     1,500        1,715,625   

Subordinate Lien, AMT, 5.00%, 7/01/32

     1,010        1,130,311   

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

    

Series E, 5.00%, 11/01/26

     2,185        2,508,861   

Series E, 5.00%, 11/01/27

     4,960        5,678,109   

Series F, 5.00%, 11/01/31

     6,345        7,173,340   

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

     1,000        1,104,370   

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

     1,340        1,549,857   

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

     2,910        3,279,104   

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

     2,500        2,864,825   

Via Metropolitan Transit Authority, Refunding RB:

    

5.25%, 8/01/28

     1,585        1,891,064   

5.25%, 8/01/29

     1,720        2,042,741   
Municipal Bonds   

Par  

(000)

    Value  

Texas (continued)

    

Via Metropolitan Transit Authority, Refunding RB (continued):

    

5.25%, 8/01/33

   $ 3,000      $ 3,521,040   
    

 

 

 
        45,531,648   

U.S. Virgin Islands — 1.9%

    

Virgin Islands Public Finance Authority, Refunding RB:

    

Gross Receipts Taxes Loan Note, Series C, 5.00%, 10/01/30

     5,000        5,645,350   

Series A, 5.25%, 10/01/24

     5,000        6,215,750   
    

 

 

 
        11,861,100   

Vermont — 1.0%

    

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

     5,565        6,122,001   

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        4,427,800   

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

     1,500        1,741,665   
    

 

 

 
        6,169,465   

Wisconsin — 1.3%

    

Public Finance Authority, Refunding RB, AMT:

    

National Gypsum Co., 5.25%, 4/01/30

     2,410        2,515,317   

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

     4,765        5,192,135   
    

 

 

 
        7,707,452   
Total Municipal Bonds — 139.5%        856,109,708   
    
                  
Municipal Bonds Transferred to
Tender Option Bond Trusts (g)
        

Connecticut — 1.9%

    

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

     10,000        11,845,886   

Illinois — 1.5%

    

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

     8,650        9,198,407   
 

 

                
8    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JANUARY 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  

Louisiana — 2.4%

    

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

   $ 12,000      $ 14,358,360   

Massachusetts — 1.9%

    

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

     10,175        11,861,183   

Minnesota — 1.9%

    

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

     10,525        11,787,124   

New York — 9.4%

    

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

     3,507        3,995,352   

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

     7,009        8,341,848   

City of New York New York Municipal Water Finance Authority, Refunding RB, Water & Sewer System, Series A, 4.75%, 6/15/30

     8,000        8,427,120   

Metropolitan Transportation Authority, RB, Series B, 5.25%, 11/15/25

     4,001        4,639,305   

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

     5,530        6,519,981   

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

     4,009        4,659,461   

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

     5,010        6,138,603   
Municipal Bonds Transferred to
Tender Option Bond Trusts (g)
  

Par  

(000)

    Value  

New York (continued)

    

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

   $ 7,000      $ 8,671,740   

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

     5,501        6,488,061   
    

 

 

 
        57,881,471   
Total Municipal Bonds Transferred to
Tender Option Bond Trusts — 19.0%
        116,932,431   
Total Long-Term Investments
(Cost — $904,557,566) — 158.5%
        973,042,139   
    
                  
Short-Term Securities    Shares         

BlackRock Liquidity Funds, MuniCash,
0.02% (h)(i)

     915,283        915,283   
Total Short-Term Securities
(Cost — $915,283) — 0.2%
        915,283   
Total Investments (Cost — $905,472,849*) — 158.7%        973,957,422   
Liabilities in Excess of Other Assets — (1.6)%        (9,860,157

Liability for TOB Trust Certificates, Including Interest
Expense and Fees Payable — (10.3)%

   

    (63,110,219
VMTP Shares, at Liquidation Value — (46.8)%        (287,100,000
    

 

 

 
Net Assets Applicable to Common Shares — 100.0%      $ 613,887,046   
    

 

 

 

 

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

 

      

Tax cost

     $ 844,445,174   
    

 

 

 

Gross unrealized appreciation

     $ 70,163,992   

Gross unrealized depreciation

       (3,753,592
    

 

 

 

Net unrealized appreciation

     $ 66,410,400   
    

 

 

 
 
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)   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.

 

(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.

 

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


Schedule of Investments (continued)

  

BlackRock Muni Intermediate Duration Fund, Inc. (MUI)

 

 

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

 

Affiliate      Shares Held
at April 30,
2015
       Net
Activity
       Shares Held
at January 31,
2016
       Income  

BlackRock Liquidity Funds, MuniCash

                 915,283           915,283             

FFI Institutional Tax-Exempt Fund

       1,356,943           (1,356,943                $ 1,346   

 

(i)   Current yield as of period end.

 

Derivative Financial Instruments Outstanding as of Period End

Financial Futures Contracts

 

Contracts
Short
    Issue   Expiration   Notional
Value
  Unrealized
Depreciation
 
  (109   5-Year U.S. Treasury Note   March 2016   $13,153,234   $ (197,073
  (174   10-Year U.S. Treasury Note   March 2016   $22,546,594     (515,291
  (44   Long U.S. Treasury Bond   March 2016   $  7,085,375     (276,683
  Total            $ (989,047
       

 

 

 

 

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
IDA    Industrial Development Authority
ISD    Independent School District
LRB    Lease Revenue Bonds
M/F    Multi-Family
NPFGC    National Public Finance Guarantee Corp.
PSF-GTD    Public School Fund Guaranteed
RB    Revenue Bonds

 

 

                
10    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JANUARY 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 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 Investments1

            $ 973,042,139              $ 973,042,139   

Short-Term Securities

  $ 915,283                          915,283   
 

 

 

 

Total

  $ 915,283         $ 973,042,139              $ 973,957,422   
 

 

 

 

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

      

     Level 1        Level 2        Level 3      Total  
Derivative Financial Instruments2                 

Liabilities:

                

Interest rate contracts

  $ (989,047                     $ (989,047
 

 

 

 

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

      

 

                
   BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JANUARY 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 pledged for financial futures contracts

  $ 509,900                        $ 509,900   

Liabilities:

                

Bank overdraft

            $ (83,407             (83,407

TOB Trust Certificates

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

VMTP Shares

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

 

 

 

Total

  $ 509,900         $ (350,285,255           $ (349,775,355
 

 

 

 

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

 

                
12    BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.    JANUARY 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: March 22, 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: March 22, 2016  
By:  

/s/ Neal J. Andrews

 
  Neal J. Andrews  
  Chief Financial Officer (principal financial officer) of
  BlackRock Muni Intermediate Duration Fund, Inc.
Date: March 22, 2016