BlackRock Build America Bond 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 811-22426

Name of Fund: BlackRock Build America Bond Trust (BBN)

Fund Address:  100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: John M. Perlowski, Chief Executive Officer, BlackRock Build America Bond 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: 07/31/2013

Date of reporting period: 10/31/2012


Item 1 – Schedule of Investments


 

 

Schedule of Investments October 31, 2012 (Unaudited)

 

 

BlackRock Build America Bond Trust (BBN)

(Percentages shown are based on Net Assets)

 

Municipal Bonds   

Par

(000)

     Value  

 

 

Arizona — 3.0%

     

Phoenix Civic Improvement Corp., RB, Series C (NPFGC), 6.00%, 7/01/35

   $ 10,000       $ 10,570,300   

Salt River Project Agricultural Improvement & Power District, RB, Build America Bonds, 4.84%, 1/01/41 (a)

     25,000         30,003,750   
     

 

 

 
        40,574,050   

 

 

California — 31.0%

     

Alameda County Joint Powers Authority, RB, Build America Bonds, Recovery Zone, Series A, 7.05%, 12/01/44 (a)

     13,300         16,547,727   

Bay Area Toll Authority, RB, Build America Bonds:

     

Series S-1, 6.92%, 4/01/40

     13,700         18,979,021   

Series S-3, 6.91%, 10/01/50

     14,000         19,940,480   

California State Public Works Board, RB, Build America Bonds, Series G-2, 8.36%, 10/01/34

     18,145         23,395,982   

California State University, RB, Build America Bonds, 6.48%, 11/01/41

     2,125         2,627,860   

City of San Jose California, Refunding ARB, Series B (AGM), 6.60%, 3/01/41

     10,000         10,964,500   

County of Sonoma California, Refunding RB, Series A, 6.00%, 12/01/29

     14,345         16,311,413   

Los Angeles Community College District California, GO, Build America Bonds, 6.60%, 8/01/42 (a)

     10,000         13,248,500   

Los Angeles Department of Water & Power, RB, Build America Bonds:

     

6.17%, 7/01/40 (a)

     37,500         43,458,750   

7.00%, 7/01/41

     17,225         20,698,421   

Metropolitan Water District of Southern California, RB, Build America Bonds, Series A, 6.95%, 7/01/40 (a)

     12,000         15,044,160   

Orange County Local Transportation Authority, Refunding RB, Build America Bonds, Series A, 6.91%, 2/15/41 (a)

     5,000         7,059,000   

Palomar Community College District, GO, Build America Bonds, 7.19%, 8/01/45

     7,500         8,911,575   

Rancho Water District Financing Authority, RB, Build America Bonds, 6.34%, 8/01/40 (a)

     20,000         21,618,800   

Riverside Community College District, GO, Build America Bonds, Series D-1, 7.02%, 8/01/40

     11,000         12,549,240   

San Diego County Regional Airport Authority, Refunding RB, Build America Bonds, Sub-Series C, 6.63%, 7/01/40

     31,000         34,999,310   
Municipal Bonds   

Par

(000)

     Value  

 

 

California (concluded)

     

San Francisco City & County Public Utilities Commission, RB, Build America Bonds, Sub-Series E, 6.00%, 11/01/40 (a)

   $ 21,255       $ 26,472,677   

State of California, GO, Build America Bonds:

     

7.63%, 3/01/40

     8,950         12,566,427   

7.60%, 11/01/40

     15,000         21,075,600   

Various Purpose, 7.55%, 4/01/39

     9,035         12,577,533   

University of California, RB, Build America Bonds (a):

     

5.95%, 5/15/45

     24,000         29,491,200   

6.30%, 5/15/50

     26,310         31,201,818   
     

 

 

 
        419,739,994   

 

 

Colorado — 3.7%

     

Denver City & County School District No. 1, COP, Refunding, Series B, 7.02%, 12/15/37

     6,000         8,179,800   

Regional Transportation District, COP, Build America Bonds, Series B, 7.67%, 6/01/40

     28,000         35,351,680   

State of Colorado, COP, Build America Bonds, Series E, 7.02%, 3/15/31

     5,000         6,123,850   
     

 

 

 
        49,655,330   

 

 

District of Columbia — 2.1%

     

Metropolitan Washington Airports Authority, RB, Build America Bonds, Series D, 8.00%, 10/01/47

     10,750         13,240,990   

Washington Convention & Sports Authority, Refunding RB, Series C, 7.00%, 10/01/40

     15,000         15,875,250   
     

 

 

 
        29,116,240   

 

 

Florida — 3.2%

     

City of Fort Lauderdale Florida, RB, Pension Funding, 5.14%, 1/01/32

     10,000         10,463,600   

City of Sunrise Florida Utility System, RB, Build America Bonds, Series B, 5.91%, 10/01/35 (a)

     25,000         27,911,500   

County of Pasco Florida Water & Sewer, RB, Build America Bonds, Series B, 6.76%, 10/01/39

     1,500         1,703,325   

Town of Davie Florida Water & Sewer, RB, Build America Bonds, Series B (AGM), 6.85%, 10/01/40

     2,500         2,999,800   
     

 

 

 
        43,078,225   

 

 

Georgia — 5.5%

     

Municipal Electric Authority of Georgia Plant Vogtle Units 3 & 4, Refunding RB, Build America Bonds:

     

6.64%, 4/01/57

     32,084         38,827,415   

6.66%, 4/01/57

     20,665         24,700,048   
 

 

                 
      BLACKROCK BUILD AMERICA BOND TRUST       OCTOBER 31, 2012    1      


 

 

Schedule of Investments (continued)

 

 

BlackRock Build America Bond Trust (BBN)

(Percentages shown are based on Net Assets)

 

Municipal Bonds    Par
(000)
     Value  

 

 

Georgia (concluded)

     

Municipal Electric Authority of Georgia Plant Vogtle Units 3 & 4, Refunding RB, Build America Bonds (concluded):

     

7.06%, 4/01/57

   $ 10,000       $ 11,102,800   
     

 

 

 
        74,630,263   

 

 

Hawaii — 2.7%

     

University of Hawaii, RB, Build America Bonds:

     

Series A-1, 6.03%, 10/01/40

     2,500         2,761,700   

Series B-1, 6.03%, 10/01/40

     30,500         33,692,740   
     

 

 

 
        36,454,440   

 

 

Illinois — 22.0%

     

Chicago Board of Education, GO, Build America Bonds:

     

6.52%, 12/01/40

     27,300         31,323,201   

Series E, 6.14%, 12/01/39

     3,495         3,915,658   

Chicago Transit Authority, RB:

     

Build America Bonds, Series B, 6.20%, 12/01/40

     16,015         18,042,179   

Series A, 6.90%, 12/01/40

     4,075         4,936,292   

Series B, 6.90%, 12/01/40

     4,900         5,935,664   

City of Chicago Illinois, GO, Build America Bonds:

     

Recovery Zone, Series D, 6.26%, 1/01/40

     22,180         24,570,117   

Series B, 7.52%, 1/01/40

     12,665         16,420,426   

City of Chicago Illinois, RB, Build America Bonds, Series B (a):

     

Wastewater Transmission, 6.90%, 1/01/40

     36,000         46,500,480   

Waterworks, 6.74%, 11/01/40

     15,250         20,875,267   

City of Chicago Illinois, O’Hare International Airport, Refunding ARB, General Third Lien, Build America Bonds, Series B:

     

6.85%, 1/01/38 (a)

     30,110         34,992,336   

6.40%, 1/01/40

     1,500         1,957,170   

County of Cook Illinois, GO, Build America Bonds, Series D, 6.23%, 11/15/34 (a)

     12,900         14,814,102   

Illinois Finance Authority, RB, Carle Foundation, Series A, 5.75%, 8/15/34

     5,000         5,940,300   

Illinois Municipal Electric Agency, RB, Build America Bonds, 7.29%, 2/01/35

     15,000         18,810,450   

Northern Illinois Municipal Power Agency, RB, Build America Bonds, 7.82%, 1/01/40

     5,000         6,907,450   

State of Illinois, GO, Build America Bonds, 7.35%, 7/01/35

     34,295         41,862,192   
     

 

 

 
        297,803,284   

 

 
Municipal Bonds    Par
(000)
     Value  

 

 

Indiana — 2.6%

     

Indiana Finance Authority, RB, Build America Bonds, 6.60%, 2/01/39 (a)

   $ 7,900       $ 10,157,899   

Indiana Municipal Power Agency, RB, Build America Bonds, Direct Payment, Series A, 5.59%, 1/01/42

     22,290         25,745,842   
     

 

 

 
        35,903,741   

 

 

Iowa — 0.2%

     

Iowa Tobacco Settlement Authority, Refunding RB, Asset-Backed, Series A, 6.50%, 6/01/23

     2,480         2,400,764   

 

 

Kentucky — 1.5%

     

City of Wickliffe Kentucky, RB, MeadWestvaco Corp, Project, 7.67%, 1/15/27 (b)

     9,400         9,923,956   

Kentucky State Property & Building Commission, RB, Build America Bonds, Series C, 5.92%, 11/01/30

     10,000         11,191,700   
     

 

 

 
        21,115,656   

 

 

Maine — 0.4%

     

Maine Health & Higher Educational Facilities Authority, RB, General Medical Center, 6.75%, 7/01/36

     5,000         6,063,700   

 

 

Maryland — 0.1%

     

Maryland Community Development Administration, RB, Residential, Series I, 6.50%, 3/01/43

     1,000         1,033,720   

 

 

Massachusetts — 1.5%

     

Commonwealth of Massachusetts, RB, Build America Bonds, Recovery Zone, Series A, 5.73%, 6/01/40 (a)

     5,000         6,610,000   

Massachusetts HFA, Refunding RB, Series D, 7.02%, 12/01/42

     12,000         13,797,840   
     

 

 

 
        20,407,840   

 

 

Michigan — 1.9%

     

County of Wayne Michigan, RB, Build America Bonds, Recovery Zone Economic Development Bonds, 10.00%, 12/01/40

     5,000         5,947,600   

Detroit City School District, GO, Build America Bonds (Q-SBLF), 6.85%, 5/01/40

     10,000         10,773,000   

Michigan State University, RB, Build America Bonds, Series A, 6.17%, 2/15/50

     5,500         6,716,765   

State of Michigan, RB, Build America Bonds, Series B, 7.63%, 9/15/27

     2,000         2,567,840   
     

 

 

 
        26,005,205   

 

 

Minnesota — 1.2%

     

Southern Minnesota Municipal Power Agency, Refunding RB, Build America Bonds, Series A, 5.93%, 1/01/43

     8,000         9,152,560   
 

 

                 
      BLACKROCK BUILD AMERICA BOND TRUST       OCTOBER 31, 2012    2      


 

 

Schedule of Investments (continued)

 

 

BlackRock Build America Bond Trust (BBN)

(Percentages shown are based on Net Assets)

 

Municipal Bonds    Par
(000)
     Value  

 

 

Minnesota (concluded)

     

Western Minnesota Municipal Power Agency, RB, Build America Bonds, Series C, 6.77%, 1/01/46

   $ 5,000       $ 6,690,750   
     

 

 

 
        15,843,310   

 

 

Mississippi — 0.5%

     

Mississippi Development Bank, RB, Build America Bonds, 6.41%, 1/01/40

     5,000         6,250,400   

 

 

Missouri — 1.7%

     

Missouri Joint Municipal Electric Utility Commission, RB, Build America Bonds, Curators of the University of Missouri, 7.73%, 1/01/39

     11,000         14,123,890   

University of Missouri, RB, Build America Bonds, 5.79%, 11/01/41 (a)

     7,000         9,083,970   
     

 

 

 
        23,207,860   

 

 

Nevada — 1.1%

     

County of Clark Nevada, ARB, Build America Bonds:

     

Series B, 6.88%, 7/01/42

     10,000         11,619,800   

Series C, 6.82%, 7/01/45 (a)

     2,000         2,861,600   
     

 

 

 
        14,481,400   

 

 

New Jersey — 14.6%

     

Camden County Improvement Authority, RB, Build America Bonds, 7.75%, 7/01/34

     5,000         5,768,900   

New Jersey EDA, RB:

     

Build America Bonds,
Series CC-1, 6.43%, 12/15/35 (a)

     15,000         16,917,000   

Series A (NPFGC), 7.43%, 2/15/29

     22,974         29,231,429   

New Jersey State Housing & Mortgage Finance Agency, RB, Series C (AGM), 6.65%, 11/01/44

     19,885         20,588,531   

New Jersey State Turnpike Authority, RB, Build America Bonds:

     

Series A, 7.10%, 1/01/41

     34,000         49,034,460   

Series F, 7.41%, 1/01/40

     6,790         10,028,966   

New Jersey Transportation Trust Fund Authority, RB, Build America Bonds:

     

Series B, 6.88%, 12/15/39

     8,500         10,077,260   

Series C, 5.75%, 12/15/28

     5,000         5,978,700   

Series C, 6.10%, 12/15/28 (a)

     42,500         49,807,450   
     

 

 

 
        197,432,696   

 

 

New York — 13.4%

     

City of New York New York, GO, Build America Bonds, 5.82%, 10/01/31

     15,000         17,508,750   

Metropolitan Transportation Authority, RB, Build America Bonds:

     

Series A, 6.67%, 11/15/39

     2,220         2,913,306   

Series C, 7.34%, 11/15/39

     13,245         19,862,732   

Series C-1, 6.69%, 11/15/40

     13,000         17,100,330   
Municipal Bonds    Par
(000)
     Value  

 

 

New York (concluded)

     

New York City Municipal Water Finance Authority, RB, Build America Bonds, Second General Resolution (a):

     

Series CC, 6.28%, 6/15/42

   $ 20,000       $ 23,547,200   

Series DD, 6.45%, 6/15/41

     6,300         7,437,465   

New York City Municipal Water Finance Authority, Refunding RB, Build America Bonds, Second General Resolution:

     

Series AA, 5.79%, 6/15/41 (a)

     25,000         28,782,000   

Series EE, 6.49%, 6/15/42

     2,000         2,363,320   

Series GG, 6.12%, 6/15/42

     2,445         2,851,286   

New York City Transitional Finance Authority, RB, Build America Bonds (a):

     

Sub-Series B-1, 5.57%, 11/01/38

     19,000         23,564,940   

Sub-Series C-2, 6.27%, 8/01/39

     14,795         17,352,759   

New York State Dormitory Authority, RB, Build America Bonds, Series H, 5.39%, 3/15/40 (a)

     15,000         18,641,400   
     

 

 

 
        181,925,488   

 

 

Ohio — 5.9%

     

American Municipal Power, Inc., RB, Build America Bonds, Combined Hydroelectric Projects, Series B, 7.83%, 2/15/41

     10,000         14,012,300   

County of Hamilton Ohio, RB, Build America Bonds, Series B, 6.50%, 12/01/34

     7,000         8,278,200   

Franklin County Convention Facilities Authority, RB, Build America Bonds, 6.64%, 12/01/42

     30,365         36,817,562   

Mariemont City School District, GO, Refunding, Build America Bonds, Series B, 6.55%, 12/01/47

     10,055         10,865,835   

Princeton City School District, GO, Refunding, Build America Bonds, Series C, 6.09%, 12/01/40 (a)

     9,290         10,162,796   
     

 

 

 
        80,136,693   

 

 

Oklahoma — 0.3%

     

Oklahoma Municipal Power Authority, RB, Build America Bonds, Series B, 6.44%, 1/01/45

     3,500         4,218,200   

 

 

Pennsylvania — 1.1%

     

Pennsylvania Economic Development Financing Authority, RB, Build America Bonds, Series B, 6.53%, 6/15/39

     12,250         14,881,300   

 

 

Puerto Rico — 0.4%

     

Puerto Rico Sales Tax Financing Corp., RB, First Sub-Series A, 6.50%, 8/01/44

     5,000         5,865,000   

 

 
 

 

                 
      BLACKROCK BUILD AMERICA BOND TRUST       OCTOBER 31, 2012    3      


 

 

Schedule of Investments (continued)

 

 

BlackRock Build America Bond Trust (BBN)

(Percentages shown are based on Net Assets)

 

Municipal Bonds    Par
(000)
     Value  

 

 

South Carolina — 1.0%

     

South Carolina State Public Service Authority, RB, Build America Bonds, Series C, 6.45%, 1/01/50

   $ 10,000       $ 13,805,000   

 

 

Tennessee — 3.5%

     

Metropolitan Government of Nashville & Davidson County Convention Center Authority, RB, Build America Bonds:

     

Series A2, 7.43%, 7/01/43

     35,105         44,256,171   

Series B, 6.73%, 7/01/43

     2,500         3,036,450   
     

 

 

 
        47,292,621   

 

 

Texas — 9.0%

     

Bexar County Hospital District, GO, Build America Bonds, 5.41%, 2/15/40 (a)

     20,000         22,332,600   

City of San Antonio Texas, RB, Build America Bonds, 6.31%, 2/01/37 (a)

     35,000         40,610,850   

City of San Antonio Texas, Refunding RB, Build America Bonds, 6.17%, 2/01/41

     19,000         21,748,920   

Cypress-Fairbanks ISD, GO, Build America Bonds, Direct Payment, 6.63%, 2/15/38

     14,000         16,323,720   

Dallas Area Rapid Transit, RB, Build America Bonds, 5.02%, 12/01/48 (a)

     2,500         3,038,125   

Katy ISD Texas, GO, Build America Bonds (PSF-GTD), 6.35%, 2/15/41 (a)

     5,000         5,814,800   

North Texas Municipal Water District, RB, Build America Bonds, 6.01%, 9/01/40 (a)

     10,000         11,721,100   
     

 

 

 
        121,590,115   

 

 

Utah — 3.3%

     

County of Utah, RB, Build America Bonds, Recovery Zone, Series C, 7.13%, 12/01/39

     11,800         13,193,580   

Utah Transit Authority, RB, Build America Bond, Subordinated, 5.71%, 6/15/40

     26,405         31,171,895   
     

 

 

 
        44,365,475   

 

 

Virginia — 0.5%

     

Virginia Small Business Financing Authority, RB, Senior Lien, Elizabeth River Crossing OPCO LLC Project, AMT, 5.50%, 1/01/42

     6,250         6,853,250   

 

 

Washington — 1.6%

     

Port of Seattle Washington, RB, Series B1, 7.00%, 5/01/36

     5,000         5,951,950   
Municipal Bonds  

Par

(000)

    Value  

 

 

Washington (concluded)

   

Washington State Convention Center Public Facilities District, RB, Build America Bonds, 6.79%, 7/01/40

  $ 12,350      $ 15,191,488   
   

 

 

 
      21,143,438   

 

 

West Virginia — 0.3%

   

Tobacco Settlement Finance Authority, RB, Series A, 7.47%, 6/01/47

    5,000        3,980,850   

 

 

Total Long-Term Investments

(Cost – $1,619,739,037) – 140.8%

  

  

    1,907,255,548   

 

 
   
   
Short-Term Securities   Shares        

 

 

BlackRock Liquidity Funds, TempFund, Institutional Class, 0.17% (c)(d)

    12,495,101        12,495,101   

 

 

Total Short-Term Securities

(Cost – $12,495,101) – 0.9%

      12,495,101   

 

 

Total Investments (Cost - $1,632,234,138*) – 141.7%

  

    1,919,750,649   

Liabilities in Excess of Other Assets – (41.7)%

  

    (564,636,115
   

 

 

 

Net Assets – 100.0%

    $ 1,355,114,534   
   

 

 

 
   

 

 
* As of October 31, 2012, gross unrealized appreciation and gross unrealized depreciation based on cost for federal income tax purposes were as follows:

Tax cost

   $ 1,632,234,138   
  

 

 

 

Gross unrealized appreciation

   $ 287,516,511   

Gross unrealized depreciation

       
  

 

 

 

Net unrealized appreciation

   $ 287,516,511   
  

 

 

 

 

(a) All or a portion of security has been pledged as collateral in connection with open reverse repurchase agreements.
(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) Investments in issuers considered to be an affiliate of the Trust during the period ended October 31, 2012, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:
Affiliate    Shares
Held at
July 31,
2012
     Net
Activity
     Shares
Held at
October 31,
2012
     Income  

BlackRock Liquidity Funds, TempFund, Institutional Class

     1,243,334         11,251,767         12,495,101       $ 3,126   
(d) Represents the current yield as of report date.
 

 

                 
      BLACKROCK BUILD AMERICA BOND TRUST       OCTOBER 31, 2012    4      


 

 

Schedule of Investments (continued)

 

 

BlackRock Build America Bond Trust (BBN)

 

Portfolio Abbreviations

To simplify the listings of portfolio holdings in the Schedule of Investments, the names and descriptions of many of the securities have been abbreviated according to the following list:

 

AGM

   Assured Guaranty Municipal Corp.

AMT

   Alternative Minimum Tax (subject to)

ARB

   Airport Revenue Bonds

COP

   Certificates of Participation

EDA

   Economic Development Authority

GO

   General Obligation Bonds

HFA

   Housing Finance Agency

ISD

   Independent School District

NPFGC

   National Public Finance Guarantee Corp.

PSF-GTD

   Permanent School Fund Guaranteed

Q-SBLF

   Qualified School Bond Loan Fund

RB

   Revenue Bonds

    

 

 

 

Reverse repurchase agreements outstanding as of October 31, 2012 were as follows:

Counterparty   

Interest

Rate

  

Trade

Date

  

Maturity

Date1

   Face Value   

Face Value

Including

Accrued

Interest

Barclays Capital, Inc.

   0.50%    4/03/12    Open    $            30,105,100    $             30,193,453

Barclays Capital, Inc.

   0.50%    4/18/12    Open    88,601,400    88,843,823

Barclays Capital, Inc.

   0.50%    6/05/12    Open    13,451,288    13,479,124

Credit Suisse Securities (USA) LLC

   0.50%    6/05/12    Open    268,258,731    268,813,878

Deutsche Bank Securities, Inc.

   0.50%    6/05/12    Open    50,750,000    50,855,024

Deutsche Bank Securities, Inc.

   0.55%    6/05/12    Open    33,123,000    33,198,401

Deutsche Bank Securities, Inc.

   0.55%    7/24/12    Open    29,959,450    30,005,221

Deutsche Bank Securities, Inc.

   0.55%    7/25/12    Open    41,220,000    41,282,345

Barclays Capital, Inc.

   0.55%    7/31/12    Open    20,375,000    20,403,949

Credit Suisse Securities (USA) LLC

   0.50%    9/18/12    Open    2,437,500    2,438,990

Deutsche Bank Securities, Inc.

   0.55%    9/28/12    Open    8,887,500    8,892,117

Credit Suisse Securities (USA) LLC

   0.50%    10/30/12    Open    13,835,250    13,835,442

Total

            $          601,004,219    $            602,241,767
1 

Certain agreements have no stated maturity and can be terminated by either party at any time.

 

 

Financial futures contracts sold as of October 31, 2012 were as follows:

    Contracts    Issue    Exchange    Expiration   

Notional

Value

   Unrealized
Appreciation

1,045

   30-Year US Treasury Bond    Chicago Board of Trade    December 2012    $      156,031,563    $        2,194,147

 

                 
      BLACKROCK BUILD AMERICA BOND TRUST       OCTOBER 31, 2012    5      


 

 

Schedule of Investments (concluded)

 

 

 

BlackRock Build America Bond Trust (BBN)

 

 

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

 

   

Level 1 — unadjusted price quotations in active markets/exchanges for identical assets and 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 level in the fair value hierarchy within which the fair value measurement falls in its entirety is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

Changes in valuation techniques may result in transfers into or out of an assigned level within the disclosure hierarchy. In accordance with the Trust’s policy, transfers between different levels of the fair value disclosure 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 investment and derivative financial instrument 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 and other significant accounting policies, please refer to the Trust’s most recent financial statements as contained in its annual report.

The following tables summarize the Trust’s investments and derivative financial instruments categorized in the disclosure hierarchy as of October 31, 2012:

      Level 1        Level 2        Level 3        Total   

Assets:

       

Investments:

       

Long-Term

Investments1

         $ 1,907,255,548             $ 1,907,255,548   

Short-Term

Securities

  $ 12,495,101                      12,495,101   

Total

  $ 12,495,101      $ 1,907,255,548             $ 1,919,750,649   

 

1 

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

      Level 1        Level 2        Level 3        Total   

Derivative Financial Instruments2

       

Assets:

       

Interest rate

contracts

  $ 2,194,147                    $ 2,194,147   

 

2 

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

Certain of the Trust’s assets and liabilities are held at carrying or face amount, which approximates fair value for financial reporting purposes. As of October 31, 2012, such assets and liabilities are categorized within the disclosure hierarchy as follows:

      Level 1        Level 2        Level 3        Total   

Assets:

       

Cash pledged as collateral for financial futures contracts

  $ 3,511,000                    $ 3,511,000   

Cash pledged as collateral for reverse repurchase agreements

    4,130,000                      4,130,000   

Liabilities:

       

Cash received as collateral for reverse repurchase agreements

         $ (260,000            (260,000

Reverse repurchase agreements

           (601,004,219            (601,004,219

Total

  $ 7,641,000      $ (601,264,219 )           $ (593,623,219 ) 

There were no transfers between levels during the period ended October 31, 2012.

 

 

                 
      BLACKROCK BUILD AMERICA BOND TRUST       OCTOBER 31, 2012    6      


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 Build America Bond Trust

 

By:  

/s/ John M. Perlowski

  John M. Perlowski
  Chief Executive Officer (principal executive officer) of
  BlackRock Build America Bond Trust
Date: December 21, 2012

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 Build America Bond Trust
Date: December 21, 2012
By:  

/s/ Neal J. Andrews

  Neal J. Andrews
  Chief Financial Officer (principal financial officer) of
  BlackRock Build America Bond Trust
Date: December 21, 2012