BlackRock Municipal Income Investment Trust

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 811-10333

Name of Fund: BlackRock Municipal Income Investment Trust (BBF)

Fund Address:  100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: John M. Perlowski, Chief Executive Officer, BlackRock Municipal

Income Investment Trust, 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: 07/31/2019

Date of reporting period: 10/31/2018

 


Item 1 – Schedule of Investments


Schedule of Investments  (unaudited)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  

Municipal Bonds — 117.2%

   
Alabama — 0.3%            

City of Selma Alabama IDB, RB, Gulf Opportunity Zone, International Paper Co. Project, Series A, 5.38%, 12/01/35

  $ 420     $ 454,020  
   

 

 

 
Arizona — 1.1%            

Arizona IDA, Refunding RB, Basis Schools, Inc. Projects, Series A, 5.38%, 07/01/50(a)

    1,185       1,203,119  

City of Phoenix Arizona IDA, Refunding RB, Basis Schools, Inc. Projects, Series A,
5.00%, 07/01/35(a)

    275       277,307  
   

 

 

 
      1,480,426  
California — 13.8%            

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

    1,010       1,038,593  

California School Finance Authority, RB, Alliance For College-Ready Public School Projects, Series A, 5.00%, 07/01/51(a)

    1,200       1,238,328  

California Statewide Communities Development Authority, RB, Lancer Educational student Housing Project, Series A, 5.00%, 06/01/46(a)

    1,220       1,281,952  

California Statewide Communities Development Authority, Refunding RB, Lancer Educational student Housing Project, Series A,
5.00%, 06/01/36(a)

    990       1,052,162  

Golden State Tobacco Securitization Corp., Refunding RB, Series A-1, 5.25%, 06/01/47

    475       477,593  

Kern Community College District, GO, Safety, Repair & Improvement, Series C, 5.50%, 11/01/33

    1,185       1,347,452  

Regents of the University of California Medical Center Pooled Revenue, Refunding RB, Series J:

   

5.25%, 05/15/23(b)

    2,165       2,459,592  

5.25%, 05/15/38

    615       678,763  

State of California, GO, Various Purposes, 6.00%, 03/01/33

    1,960       2,065,291  

State of California Public Works Board, LRB, Various Capital Projects, Series I:

   

5.50%, 11/01/31

    2,100       2,365,839  

5.50%, 11/01/33

    1,500       1,686,150  
Security   Par
(000)
    Value  
California (continued)            

State of California Public Works Board, RB, Department of Corrections & Rehabilitation, Series F, 5.25%, 09/01/33

  $ 610     $ 676,478  

Tobacco Securitization Authority of Southern California, Refunding RB, Tobacco Settlement, Asset-Backed, Senior Series A-1, 5.00%, 06/01/37

    2,025       2,030,022  

Township of Washington California Health Care District, GO, Election of 2004, Series B, 5.50%, 08/01/40

    460       523,135  
   

 

 

 
      18,921,350  
Colorado — 3.3%            

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

    250       249,223  

City & County of Denver Colorado, RB, Capital Appreciation Bonds Series, Series A-2, 0.00%, 08/01/38(c)

    1,000       430,820  

City & County of Denver Colorado Airport System, ARB, Sub-System, Series B, 5.25%, 11/15/32

    1,750       1,937,932  

Colorado Health Facilities Authority, Refunding RB, Series A:

   

Catholic Health Initiative, 5.50%, 07/01/34

    1,675       1,712,403  

Frasier Meadows Retirement Community Project, 5.25%, 05/15/37

    210       223,507  
   

 

 

 
      4,553,885  
Connecticut — 0.3%            

Connecticut Housing Finance Authority, Refunding RB, S/F Housing, Sub-Series B-1, 4.00%, 05/15/45

    460       448,233  
   

 

 

 
Delaware — 0.8%            

County of Kent Delaware, RB, CHF Dover LLC, Delaware State University Project, Series A, 5.00%, 07/01/58

    1,040       1,066,061  
   

 

 

 
District of Columbia — 0.8%            

District of Columbia Housing Finance Agency, RB, M/F Housing, Series B-2 (FHA), 4.10%, 09/01/39

    1,055       1,034,649  
   

 

 

 
Florida — 6.2%            

Celebration Pointe Community Development District, Special Assessment Bonds, County of Alachua Florida(a):

   

5.00%, 05/01/32

    225       232,479  

5.00%, 05/01/48

    555       555,377  
 

 

 

     1  


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Florida (continued)            

County of Miami-Dade Florida, RB, Seaport Department, Series A, 6.00%, 10/01/38

  $ 5,675     $ 6,375,579  

Lakewood Ranch Stewardship District, Special Assessment Bonds, Lakewood National & Polo Run Projects:

   

5.25%, 05/01/37

    180       183,708  

5.38%, 05/01/47

    185       188,345  

Reedy Creek Florida Improvement District, GO, Series A, 5.25%, 06/01/32

    875       972,904  
   

 

 

 
      8,508,392  
Georgia — 0.1%            

County of Georgia Housing & Finance Authority, RB, S/F Housing, Series A, 4.00%, 12/01/48

    100       97,939  
   

 

 

 
Idaho — 0.4%            

Idaho Health Facilities Authority, Refunding RB, St. Luke’s Health System Project, Series A, 4.00%, 03/01/43

    30       28,303  

Idaho State Building Authority, RB, Department of Health And Welfare Project, 4.00%, 09/01/48

    555       544,155  
   

 

 

 
      572,458  
Illinois — 20.6%  

Chicago Board of Education, GO:

   

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

    215       214,987  

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

    700       712,719  

Refunding Dedicated Revenues, Series D, 5.00%, 12/01/27

    400       413,552  

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

    290       301,313  

Refunding Dedicated Revenues, Series G, 5.00%, 12/01/34

    215       217,494  

City of Chicago Illinois O’Hare International Airport, GARB, 3rd Lien, Series C, 6.50%, 01/01/21(b)

    4,545       4,957,641  

City of Chicago Illinois Transit Authority, RB:

   

5.25%, 12/01/31

    560       592,732  

Sales Tax Receipts, 5.25%, 12/01/36

    1,500       1,576,875  

Sales Tax Receipts, 5.25%, 12/01/40

    1,750       1,837,605  
Security   Par
(000)
    Value  
Illinois (continued)  

County of Cook Illinois Community College District No. 508, GO, City College of Chicago:

   

5.50%, 12/01/38

  $ 580     $ 602,852  

5.25%, 12/01/43

    2,660       2,726,553  

Illinois Finance Authority, RB:

   

Carle Foundation, Series A, 6.00%, 08/15/41

    1,750       1,893,623  

Rush University Medical Center, Series B, 7.25%, 11/01/18(b)

    1,600       1,600,000  

Illinois Finance Authority, Refunding RB, Northwestern Memorial Hospital, Series A, 6.00%, 08/15/19

    2,900       2,989,697  

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

   

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

    2,165       276,730  

Bonds, 5.00%, 06/15/57

    590       606,060  

5.50%, 06/15/53

    280       295,484  

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

   

Bonds, Series B, 0.00%, 12/15/54(c)

    3,020       430,018  

Series B-2, 5.00%, 06/15/50

    125       125,051  

Railsplitter Tobacco Settlement Authority, RB(b):

   

5.50%, 06/01/21

    1,055       1,139,094  

6.00%, 06/01/21

    300       327,651  

State of Illinois, GO:

   

5.25%, 02/01/31

    730       755,973  

5.25%, 02/01/32

    1,500       1,548,420  

5.50%, 07/01/33

    1,500       1,581,720  

5.50%, 07/01/38

    340       355,446  

State of Illinois, GO, Refunding, Series B, 5.00%, 10/01/27

    225       233,512  
   

 

 

 
      28,312,802  
Indiana — 3.8%  

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

   

6.63%, 01/15/34

    125       130,977  

6.75%, 01/15/43

    185       193,499  

6.88%, 01/15/52

    375       393,000  

Indiana Finance Authority, Refunding RB, Marquette Project, 4.75%, 03/01/32

    500       505,340  

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

    3,400       3,423,120  
 

 

 

2   


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Indiana (continued)            

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

  $ 520     $ 528,726  
   

 

 

 
      5,174,662  
Iowa — 1.2%            

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

   

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

    905       961,038  

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

    5       5,009  

Midwestern Disaster Area, 5.25%, 12/01/25

    625       660,281  
   

 

 

 
      1,626,328  
Kansas — 2.2%            

City of Lenexa Kansas, Refunding RB, Lakeview Village, Inc., Series A, 5.00%, 05/15/43

    475       480,918  

Kansas Development Finance Authority, Refunding RB, Adventist Health System:

   

5.50%, 11/15/19(b)

    55       56,843  

5.50%, 11/15/29

    2,445       2,523,876  
   

 

 

 
      3,061,637  
Louisiana — 1.5%            

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

    1,095       1,174,048  

Tobacco Settlement Financing Corp., Refunding RB, Asset-Backed, Series A, 5.50%, 05/15/29

    915       929,320  
   

 

 

 
      2,103,368  
Maine — 0.5%            

Maine Health & Higher Educational Facilities Authority, RB, Maine General Medical Center, 7.50%, 07/01/32

    680       742,036  
   

 

 

 
Maryland — 1.0%            

City of Baltimore Maryland, Refunding RB, East Baltimore Research Park, Series A, 4.50%, 09/01/33

    135       136,860  

City of Baltimore Maryland, Tax Allocation Bonds, Center/West Development, Series A, 5.38%, 06/01/36

    415       413,813  
Security   Par
(000)
    Value  
Maryland (continued)            

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

  $ 770     $ 764,795  
   

 

 

 
      1,315,468  
Massachusetts — 2.4%            

Massachusetts Development Finance Agency, RB:

   

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

    790       827,691  

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

    500       519,850  

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

    875       905,590  

Massachusetts Development Finance Agency, Refunding RB:

   

Emerson College Issue, 5.00%, 01/01/45

    375       389,471  

Trustees of Deerfield Academy, 5.00%, 10/01/40

    375       393,053  

Metropolitan Boston Transit Parking Corp., Refunding RB, 5.25%, 07/01/36

    300       318,888  
   

 

 

 
      3,354,543  
Michigan — 1.1%            

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

    1,400       1,506,414  
   

 

 

 
Minnesota — 3.3%            

City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series A:

   

4.00%, 11/15/48

    430       410,448  

5.00%, 11/15/49

    1,790       1,910,789  

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

   

4.25%, 02/15/48

    1,665       1,589,709  

5.25%, 02/15/58

    560       590,682  
   

 

 

 
      4,501,628  
Montana — 0.1%            

City of Kalispell Montana, Refunding RB, Immanuel Lutheran Corporation Project, Series A, 5.25%, 05/15/37

    125       128,195  
   

 

 

 
Nevada — 4.1%            

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

    2,600       2,643,784  
 

 

 

     3  


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Nevada (continued)            

County of Clark Nevada Airport System, ARB, Series B, 5.75%, 07/01/42

  $ 2,825     $ 2,936,870  
   

 

 

 
      5,580,654  
New Jersey — 7.3%            

Casino Reinvestment Development Authority, Refunding RB, 5.25%, 11/01/39

    265       279,474  

New Jersey EDA, RB, State House Project, Series B (BAM), 4.13%, 06/15/39

    330       324,806  

New Jersey EDA, Refunding RB, School Facilities Construction, Series AA:

   

5.50%, 06/15/19(b)

    500       510,960  

5.50%, 12/15/29

    250       254,140  

New Jersey Housing & Mortgage Finance Agency, RB, S/F, Series CC, 5.25%, 10/01/29

    1,400       1,409,268  

New Jersey Transportation Trust Fund Authority, RB, Transportation System:

   

Series A, 5.88%, 12/15/38

    1,990       1,999,055  

Series AA, 5.50%, 06/15/39

    2,245       2,381,765  

Tobacco Settlement Financing Corp., Refunding RB:

   

Series A, 5.00%, 06/01/36

    475       510,915  

Series A, 5.00%, 06/01/46

    1,515       1,563,844  

Series A, 5.25%, 06/01/46

    390       412,234  

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

    380       384,894  
   

 

 

 
      10,031,355  
New York — 5.4%            

City of New York Housing Development Corp., Refunding RB, Sustainable Neighborhood Bonds, Series A, 4.15%, 11/01/38(e)

    2,075       2,047,361  

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

    900       926,082  

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

   

5.75%, 02/15/21(b)

    1,005       1,086,897  

5.75%, 02/15/47

    615       658,124  

Metropolitan Transportation Authority, RB, Series A,
5.25%, 11/15/21(b)

    500       546,240  

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

    360       393,246  

New York Liberty Development Corp., Refunding RB, 2nd Priority, Bank of America Tower at One Bryant Park Project, Class 3, 6.38%, 07/15/49

    1,480       1,537,779  
Security   Par
(000)
    Value  
New York (continued)            

Westchester New York Tobacco Asset Securitization, Refunding RB, Tobacco Settlement Bonds, Sub-Series C, 4.00%, 06/01/42

  $ 275     $ 255,137  
   

 

 

 
      7,450,866  
North Dakota — 0.1%            

County of Cass North Dakota, Refunding RB, Essentia Health Obligated Group, Series B,
4.25%, 02/15/43(e)

    200       192,648  
   

 

 

 
Ohio — 4.0%            

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

   

5.75%, 06/01/34

    225       216,655  

5.88%, 06/01/47

    1,000       970,990  

County of Allen Ohio Hospital Facilities Revenue, Refunding RB, Catholic Healthcare Partners, Series A, 5.25%, 06/01/20(b)

    2,405       2,517,145  

Ohio Housing Finance Agency, RB, S/F Housing, Series A (Ginnie Mae, Fannie Mae & Freddie Mac), 4.00%, 09/01/48

    305       297,198  

State of Ohio Turnpike Commission, RB, Junior Lien, Infrastructure Projects, Series A-1, 5.25%, 02/15/31

    1,385       1,522,863  
   

 

 

 
      5,524,851  
Oklahoma — 1.8%            

Oklahoma Development Finance Authority, RB:

   

OU Medicine Project, Series B, 5.25%, 08/15/48

    560       592,911  

Provident Oklahoma Education Resources, Inc., Cross Village Student Housing Project, Series A, 5.25%, 08/01/57

    1,110       1,021,378  

Tulsa County Industrial Authority, Refunding RB, Montereau, Inc. Project, 5.25%, 11/15/45

    850       913,214  
   

 

 

 
      2,527,503  
Oregon — 0.4%            

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

    575       250,142  
 

 

 

4   


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Oregon (continued)  

State of Oregon Housing & Community Services Department, RB, S/F Housing, Mortgage Program, Series C, 3.95%, 07/01/43

  $ 315     $ 308,656  
   

 

 

 
      558,798  
Pennsylvania — 4.1%  

Allentown Neighborhood Improvement Zone Development Authority, RB, City Center Project, 5.00%, 05/01/42(a)

    420       436,195  

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

    55       52,375  

Pennsylvania Economic Development Financing Authority, RB, American Water Co. Project, 6.20%, 04/01/39

    800       812,552  

Pennsylvania Housing Finance Agency, RB, S/F Housing Mortgage, Series 123-B, 4.00%, 10/01/42

    990       963,191  

Pennsylvania Turnpike Commission, RB, Series A(b):

   

5.63%, 12/01/20

    1,200       1,283,868  

5.63%, 12/01/20

    445       476,101  

Township of Bristol Pennsylvania School District, GO, 5.25%, 06/01/37

    1,530       1,653,119  
   

 

 

 
      5,677,401  
Puerto Rico — 1.3%  

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

   

5.50%, 05/15/39

    305       309,331  

5.63%, 05/15/43

    1,420       1,439,326  
   

 

 

 
      1,748,657  
Rhode Island — 2.2%  

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

   

4.50%, 06/01/45

    2,870       2,830,480  

5.00%, 06/01/50

    125       128,164  
   

 

 

 
      2,958,644  
South Carolina — 3.9%  

County of Charleston South Carolina, RB, Special Source, 5.25%, 12/01/38

    1,825       2,046,354  

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

    1,500       1,582,005  

State of South Carolina Public Service Authority, Refunding RB:

   

Series A, 5.00%, 12/01/50

    210       217,489  

Series A, 5.00%, 12/01/55

    465       479,969  
Security   Par
(000)
     Value  
South Carolina (continued)  

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

    

Series E, 5.25%, 12/01/55

  $ 945      $ 999,857  
    

 

 

 
       5,325,674  
Texas — 12.2%  

Central Texas Regional Mobility Authority, Refunding RB, Senior Lien, 6.00%, 01/01/21(b)

    2,560        2,757,606  

City of Beaumont Texas, GO, Certificates of Obligation, 5.25%, 03/01/37

    1,140        1,247,274  

County of Tarrant Texas Cultural Education Facilities Finance Corp., RB, Scott & White Healthcare, 6.00%, 08/15/20(b)

    2,710        2,891,760  

Lower Colorado River Authority, Refunding RB:

    

5.50%, 05/15/19(b)

    5        5,092  

5.50%, 05/15/19(b)

    80        81,476  

5.50%, 05/15/19(b)

    5        5,092  

5.50%, 05/15/33

    1,910        1,942,986  

North Texas Tollway Authority, RB, Special Projects, Series A, 5.50%, 09/01/21(b)

    1,500        1,629,900  

North Texas Tollway Authority, Refunding RB:

    

4.25%, 01/01/49(e)

    1,850        1,815,960  

5.00%, 01/01/50(e)

    375        403,436  

1st Tier, Series K-1 (AGC), 5.75%, 01/01/19(b)

    1,250        1,257,637  

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

    520        569,572  

Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien, NTE Mobility Partners LLC, North Tarrant Express Managed Lanes Project, 6.88%, 12/31/39

    2,005        2,095,927  
    

 

 

 
       16,703,718  
Virginia — 3.5%  

Ballston Quarter Community Development Authority, Tax Allocation Bonds, Series A:

    

5.00%, 03/01/26

    240        244,006  

5.13%, 03/01/31

    470        478,737  

City of Lexington Virginia IDA, RB, Washington & Lee University, 5.00%, 01/01/43

    425        454,435  
 

 

 

     5  


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Virginia (continued)  

County of Fairfax Virginia IDA, Refunding RB, Health Care-Inova Health(b):

   

5.50%, 05/15/19

  $ 475     $ 484,101  

5.50%, 05/15/19

    885       901,957  

State of Virginia Public School Authority, RB, Fluvanna County School Financing, 6.50%, 12/01/18(b)

    1,200       1,204,356  

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

    1,010       989,487  
   

 

 

 
      4,757,079  
Washington — 1.1%            

Washington State Housing Finance Commission, Refunding RB, Horizon House Project,
5.00%, 01/01/48(a)

    1,405       1,451,857  
   

 

 

 
West Virginia — 0.5%            

City of Martinsburg West Virginia, RB, M/F Housing, Kings Daughters Apartments, Series A-1, 4.63%, 12/01/43

    570       545,901  

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

    140       127,201  
   

 

 

 
      673,102  
Wisconsin — 0.5%            

Public Finance Authority, Refunding RB, Mery’s Wood at Marylhurst Projects, 5.25%, 05/15/52(a)

    735       754,301  
   

 

 

 

Total Municipal Bonds — 117.2%
(Cost — $155,713,894)

      160,881,602  
   

 

 

 

Municipal Bonds Transferred to Tender Option Bond Trusts(f)

 

California — 18.8%

 

Fremont Union High School District, GO, Refunding Series A, 4.00%, 08/01/46

    1,840       1,848,013  

Grossmont California Union High School District, GO, Election of 2008, Series B, 5.00%, 08/01/20(b)

    3,700       3,895,434  

Los Angeles California Unified School District, GO, Series I, 5.00%, 01/01/34

    600       611,190  

Los Angeles Community College District California, GO, Election of 2008, Series C, 5.25%, 08/01/20(b)(g)

    4,041       4,272,629  
Security   Par
(000)
    Value  
California (continued)  

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

  $ 5,977     $ 6,167,060  

San Diego Public Facilities Financing Authority Water, RB, Series B, 5.50%, 08/01/19(b)

    6,448       6,625,161  

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

    2,311       2,359,948  
   

 

 

 
      25,779,435  
District of Columbia — 1.6%            

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

    2,129       2,203,469  
   

 

 

 
Georgia — 0.7%            

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

    1,025       1,002,233  
   

 

 

 
Idaho — 1.4%            

Idaho State Building Authority, RB, State Office Campus Project, Series A, 4.00%, 09/01/48

    1,900       1,883,555  
   

 

 

 
Illinois — 1.0%            

State of Illinois Toll Highway Authority, RB, Series C, 5.00%, 01/01/38

    1,244       1,346,055  
   

 

 

 
Iowa — 1.1%            

Iowa Finance Authority, Refunding RB, UnityPoint Health, Series E, 4.00%, 08/15/46

    1,605       1,514,842  
   

 

 

 
Nevada — 1.5%            

County of Clark Nevada Water Reclamation District, GO, Series B, 5.50%, 07/01/19(b)

    1,994       2,041,592  
   

 

 

 
New Hampshire — 1.2%            

New Hampshire Health & Education Facilities Authority, RB, Dartmouth College,
5.25%, 06/01/19(b)(g)

    1,680       1,711,536  
   

 

 

 
New Jersey — 4.1%            

New Jersey Transportation Trust Fund Authority, RB, Transportation System:

   

Series A (AMBAC) (AGM), 5.00%, 12/15/32

    3,000       3,004,440  
 

 

 

6   


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
New Jersey (continued)            

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

   

Series B, 5.25%, 06/15/36(g)

  $ 2,481     $ 2,582,544  
   

 

 

 
      5,586,984  
New York — 12.4%            

City of New York Municipal Water Finance Authority, Refunding RB:

   

Series FF, 5.00%, 06/15/45

    2,499       2,689,342  

Water & Sewer System, 2nd General Resolution, Series FF-2, 5.50%, 06/15/40(g)

    2,985       3,042,402  

City of New York Transitional Finance Authority, BARB, Fiscal 2009, Series S-3,
5.25%, 01/15/39(g)

    2,499       2,516,918  

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

    3,375       3,637,863  

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

    1,980       2,155,199  

State of New York Dormitory Authority, ERB, Personal Income Tax, Series B,
5.25%, 03/15/19(b)

    3,000       3,037,965  
   

 

 

 
      17,079,689  
North Carolina — 0.8%            

North Carolina Housing Finance Agency, RB, S/F Housing, Series 39-B (Ginnie Mae, Fannie Mae & Freddie Mac), 4.00%, 01/01/48

    1,089       1,070,757  
   

 

 

 
Pennsylvania — 2.7%            

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

    1,514       1,694,928  

Pennsylvania Turnpike Commission, Refunding RB, Sub Series B-2 (AGM), 5.00%, 06/01/35

    1,830       1,995,057  
   

 

 

 
      3,689,985  
Security   Par
(000)
    Value  
Rhode Island — 1.5%            

Rhode Island Health & Educational Building Corp., RB, Series A, 4.00%, 09/15/47

  $ 2,207     $ 2,126,511  
   

 

 

 
Texas — 5.4%            

City of San Antonio Texas Public Service Board, Refunding RB, Series A, 5.25%, 02/01/19(b)(g)

    3,074       3,099,055  

County of Harris Texas Cultural Education Facilities Finance Corp., RB, Texas Children’s Hospital Project, 5.50%, 10/01/39

    4,200       4,308,003  
   

 

 

 
      7,407,058  
Virginia — 1.2%            

Hampton Roads Transportation Accountability Commission, RB, Transportation Fund, Senior Lien, Series A, 5.50%, 07/01/57(g)

    1,473       1,696,867  
   

 

 

 
West Virginia — 1.2%            

Morgantown Utility Board, Inc., RB, Series B,
4.00%, 12/01/48(g)

    1,671       1,608,587  
   

 

 

 

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 56.6%
(Cost — $76,712,539)

 

    77,749,155  
   

 

 

 

Total Long-Term Investments — 173.8%
(Cost — $232,426,433)

 

    238,630,757  
   

 

 

 
     Shares         
Short-Term Securities — 1.2%  

BlackRock Liquidity Funds, MuniCash, Institutional Class,
1.45%(h)(i)

    1,647,517       1,647,682  
   

 

 

 

Total Short-Term Securities — 1.2%
(Cost — $1,647,682)

 

    1,647,682  
   

 

 

 

Total Investments — 175.0%
(Cost — $234,074,115)

 

    240,278,439  

Liabilities in Excess of Other Assets — (4.2)%

 

    (5,843,242

Liability for TOB Trust Certificates, Including Interest Expense and Fees Payable — (33.1)%

 

    (45,409,581

VRDP Shares at Liquidity Value, Net of Deferred Offering Cost — (37.7)%

 

    (51,714,419
   

 

 

 

Net Assets Applicable to Common Shares — 100.0%

 

  $ 137,311,197  
   

 

 

 
 
(a) 

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

(b) 

U.S. Government securities, held in escrow, are used to pay interest on this security, as well as to retire the bond in full at the date indicated, typically at a premium to par.

(c) 

Zero-coupon bond.

 

 

     7  


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

 

 

(d) 

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

(e) 

When-issued security.

(f) 

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

(g) 

All or a portion of security is subject to a recourse agreement. The aggregate maximum potential amount the Trust could ultimately be required to pay under the agreement(s), which expire between December 1, 2018 to June 1, 2026, is $11,774,151.

(h) 

Annualized 7-day yield as of period end.

(i) 

During the period ended October 31, 2018, investments in issuers considered to be an affiliate of the Trust for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

 

Affiliate    Shares
Held at
07/31/18
     Net
Activity
     Shares
Held at
10/31/18
     Value at
10/31/18
     Income      Net Realized
Gain (Loss)(a)
     Change in
Unrealized
Appreciation
(Depreciation)
 

BlackRock Liquidity Funds, MuniCash, Institutional Class

     569,880        1,077,637        1,647,517      $ 1,647,682      $ 2,581      $ (57    $  
           

 

 

    

 

 

    

 

 

    

 

 

 

 

  (a) 

Includes net capital gain distributions, if applicable.

 

For Trust compliance purposes, the Trust’s sector classifications refer to one or more of the sector sub-classifications used by one or more widely recognized market indexes or rating group indexes, and/or as defined by the investment adviser. These definitions may not apply for purposes of this report, which may combine such sector sub-classifications for reporting ease.

Derivative Financial Instruments Outstanding as of Period End

Futures Contracts

 

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

Short Contracts:

                 

10-Year U.S. Treasury Note

     5          12/19/18        $ 592        $ 556  

Long U.S. Treasury Bond

     23          12/19/18          3,177          42,257  

5-Year U.S. Treasury Note

     10          12/31/18          1,124          5,933  
                 

 

 

 
                  $ 48,746  
                 

 

 

 

Portfolio Abbreviations

AGC — Assured Guarantee Corp.

AGM — Assured Guaranty Municipal Corp.

AMBAC — American Municipal Bond Assurance Corp.

ARB — Airport Revenue Bonds

BAM — Build America Mutual Assurance Co.

BARB — Building Aid Revenue Bonds

CAB — Capital Appreciation Bonds

EDA — Economic Development Authority

ERB — Education Revenue Bonds

FHA — Federal Housing Administration

GARB — General Airport Revenue Bonds

GO — General Obligation Bonds

IDA — Industrial Development Authority

IDB — Industrial Development Board

 

 

8   


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

 

Portfolio Abbreviations (continued)

LRB — Lease Revenue Bonds

M/F — Multi-Family

RB — Revenue Bonds

S/F — Single-Family

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of investments and derivative financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

 

   

Level 1 — Unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Trust has the ability to access

 

   

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

 

   

Level 3 — Unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Trust’s own assumptions used in determining the fair value of investments and derivative financial instruments)

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the BlackRock Global Valuation Methodologies Committee (the “Global Valuation Committee”) in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. 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 Trust’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 Trust’s policy regarding valuation of investments and derivative financial instruments, refer to the Trust’s most recent financial statements as contained in its annual report.

 

9


Schedule of Investments  (unaudited) (continued)

October 31, 2018

  

BlackRock Municipal Income Investment Trust (BBF)

 

Fair Value Hierarchy as of Period End (continued)

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

 

      Level 1        Level 2        Level 3        Total  

Assets:

                 

Investments:

                 

Long-Term Investments(a)

   $        $ 238,630,757        $        $ 238,630,757  

Short-Term Securities

     1,647,682                            1,647,682  
  

 

 

      

 

 

      

 

 

      

 

 

 
   $ 1,647,682        $ 238,630,757        $        $ 240,278,439  
  

 

 

      

 

 

      

 

 

      

 

 

 

Derivative Financial Instruments(b)

                 

Assets:

                 

Interest rate contracts

   $ 48,746        $        $        $ 48,746  
  

 

 

      

 

 

      

 

 

      

 

 

 

 

  (a) 

See above Schedule of Investments for values in sector.

 
  (b) 

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

 

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

   $        $ (45,245,859      $        $ (45,245,859

VRDP Shares at Liquidation Value

              (52,000,000                 (52,000,000
  

 

 

      

 

 

      

 

 

      

 

 

 
   $        $ (97,245,859      $        $ (97,245,859
  

 

 

      

 

 

      

 

 

      

 

 

 

During the period ended October 31, 2018, there were no transfers between levels.

 

10


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 Municipal Income Investment Trust

 

By:     /s/ John M. Perlowski                    
        John M. Perlowski
        Chief Executive Officer (principal executive officer) of
        BlackRock Municipal Income Investment Trust

Date: December 19, 2018

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 Municipal Income Investment Trust

Date: December 19, 2018

 

By:     /s/ Neal J. Andrews                      
        Neal J. Andrews
        Chief Financial Officer (principal financial officer) of
        BlackRock Municipal Income Investment Trust

Date: December 19, 2018