UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY
 
Investment Company Act file number 811-22391
 
Nuveen Build America Bond Fund
(Exact name of registrant as specified in charter)
 
Nuveen Investments
        333 West Wacker Drive, Chicago, Illinois 60606         
(Address of principal executive offices) (Zip code)
 

Gifford R. Zimmerman
Vice President and Secretary
        333 West Wacker Drive, Chicago, Illinois 60606         
(Name and address of agent for service)
 
Registrant's telephone number, including area code:         312-917-7700        
 
Date of fiscal year end:            3/31          
 
Date of reporting period:         6/30/17         
 
Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.
 
A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

 
 
Item 1. Schedule of Investments
 

 
  
Portfolio of Investments 
 
 
 
           
 
  
Nuveen Build America Bond Fund (NBB) 
 
 
 
 
  
June 30, 2017 (Unaudited) 
 
 
 
 
 
Principal 
  
 
Optional Call 
 
 
Amount (000) 
  
Description (1) 
Provisions (2) 
Ratings (3) 
Value 
 
  
LONG-TERM INVESTMENTS – 120.2% (99.9% of Total Investments) 
 
 
 
 
 
  
MUNICIPAL BONDS – 119.7% (99.5% of Total Investments) 
 
 
 
 
 
  
Arizona – 1.0% (0.8% of Total Investments) 
 
 
 
$ 5,000 
  
Mesa, Arizona, Utility System Revenue Bonds, Series 2010, 6.100%, 7/01/34 
7/20 at 100.00 
Aa2 
$ 5,581,850 
 
  
California – 27.0% (22.4% of Total Investments) 
 
 
 
2,520 
  
Alameda Corridor Transportation Authority, California, Revenue Bonds, Refunding Taxable 
No Opt. Call 
BBB+ 
1,252,642 
 
  
Subordinate Lien Series 2004B, 0.000%, 10/01/31 – AMBAC Insured 
 
 
 
1,995 
  
Bay Area Toll Authority, California, Revenue Bonds, San Francisco Bay Area Toll Bridge, Build 
No Opt. Call 
AA 
2,859,074 
 
  
America Federally Taxable Bond Series 2009F-2, 6.263%, 4/01/49 
 
 
 
 
  
Bay Area Toll Authority, California, Revenue Bonds, San Francisco Bay Area Toll Bridge, 
 
 
 
 
  
Subordinate Lien, Build America Federally Taxable Bond Series 2010S-1: 
 
 
 
75 
  
6.793%, 4/01/30 
No Opt. Call 
AA– 
92,903 
100 
  
6.918%, 4/01/40 
No Opt. Call 
AA– 
140,762 
600 
  
California Infrastructure and Economic Development Bank, Revenue Bonds, University of 
No Opt. Call 
AA– 
790,110 
 
  
California San Francisco Neurosciences Building, Build America Taxable Bond Series 2010B, 
 
 
 
 
  
6.486%, 5/15/49 
 
 
 
40 
  
California Municipal Finance Authority Charter School Revenue Bonds, Albert Einstein Academies 
No Opt. Call 
BB– 
39,824 
 
  
Project, Taxable Series 2013B, 7.000%, 8/01/18 
 
 
 
395 
  
California School Finance Authority, Charter School Revenue Bonds, City Charter School 
No Opt. Call 
N/R 
391,990 
 
  
Obligated Group, Taxable Series 2016B, 3.750%, 6/01/20 
 
 
 
3,030 
  
California State Public Works Board, Lease Revenue Bonds, Various Capital Projects, Build 
No Opt. Call 
A+ 
4,552,030 
 
  
America Taxable Bond Series 2009G-2, 8.361%, 10/01/34 
 
 
 
2,050 
  
California State Public Works Board, Lease Revenue Bonds, Various Capital Projects, Build 
3/20 at 100.00 
A+ 
2,346,737 
 
  
America Taxable Bond Series 2010A-2, 8.000%, 3/01/35 
 
 
 
7,000 
  
California State University, Systemwide Revenue Bonds, Build America Taxable Bond Series 
No Opt. Call 
Aa2 
9,462,600 
 
  
2010B, 6.484%, 11/01/41 
 
 
 
3,000 
  
California State, General Obligation Bonds, Build America Federally Taxable Series 2009, 
No Opt. Call 
AA– 
4,589,670 
 
  
7.550%, 4/01/39 
 
 
 
7,115 
  
California State, General Obligation Bonds, Various Purpose Build America Taxable Bond Series 
3/20 at 100.00 
AA– 
8,174,139 
 
  
2010, 7.950%, 3/01/36 
 
 
 
6,610 
  
California State, General Obligation Bonds, Various Purpose, Build America Taxable Bond Series 
No Opt. Call 
AA– 
10,320,524 
 
  
2010, 7.600%, 11/01/40 
 
 
 
9,185 
  
California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda 
No Opt. Call 
BB+ 
9,736,467 
 
  
University Medical Center, Series 2014B, 6.000%, 12/01/24 
 
 
 
7,500 
  
Los Angeles Community College District, California, General Obligation Bonds, Build America 
No Opt. Call 
AA+ 
10,834,425 
 
  
Taxable Bonds, Series 2010, 6.600%, 8/01/42 
 
 
 
10,000 
  
Los Angeles Community College District, Los Angeles County, California, General Obligation 
No Opt. Call 
Aa1 
14,445,900 
 
  
Bonds, Series 2010, 6.600%, 8/01/42 (UB) (4) 
 
 
 
3,000 
  
Los Angeles County Metropolitan Transportation Authority, California, Measure R Sales Tax 
No Opt. Call 
AAA 
3,805,830 
 
  
Revenue Bonds, Build America Taxable Bond Series 2010A, 5.735%, 6/01/39 
 
 
 
 
  
Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Multiple 
 
 
 
 
  
Capital Projects I, Build America Taxable Bond Series 2010B: 
 
 
 
2,050 
  
7.488%, 8/01/33 
No Opt. Call 
AA 
2,806,470 
11,270 
  
7.618%, 8/01/40 
No Opt. Call 
AA 
16,810,895 
9,895 
  
Los Angeles Department of Airports, California, Revenue Bonds, Los Angeles International 
No Opt. Call 
AA– 
12,851,428 
 
  
Airport, Build America Taxable Bonds, Series 2009C, 6.582%, 5/15/39 
 
 
 
 
  
Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Federally 
 
 
 
 
  
Taxable – Direct Payment – Build America Bonds, Series 2010A: 
 
 
 
80 
  
5.716%, 7/01/39 
No Opt. Call 
Aa2 
102,461 
2,840 
  
6.166%, 7/01/40 
7/20 at 100.00 
Aa2 
3,153,167 
1,685 
  
Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Federally 
No Opt. Call 
Aa2 
2,461,987 
 
  
Taxable – Direct Payment – Build America Bonds, Series 2010D, 6.574%, 7/01/45 
 
 
 
2,000 
  
Los Angeles Department of Water and Power, California, Water System Revenue Bonds, Tender 
No Opt. Call 
AA+ 
6,771,100 
 
  
Option Bond Trust 2016-XFT906, 25.690%, 7/01/50 (IF) (4) 
 
 
 
1,500 
  
Metropolitan Water District of Southern California, Water Revenue Bonds, Build America Taxable 
7/19 at 100.00 
AAA 
1,633,305 
 
  
Bond Series 2009D, 6.538%, 7/01/39 
 
 
 
1,000 
  
Metropolitan Water District of Southern California, Water Revenue Bonds, Build America Taxable 
7/20 at 100.00 
AAA 
1,125,710 
 
  
Series 2010A, 6.947%, 7/01/40 
 
 
 
2,330 
  
Oakland Redevelopment Agency, California, Subordinated Housing Set Aside Revenue Bonds, 
No Opt. Call 
AA– 
2,476,068 
 
  
Federally Taxable Series 2011A-T, 7.500%, 9/01/19 
 
 
 
4,250 
  
Sacramento Public Financing Authority, California, Lease Revenue Bonds, Golden 1 Center, 
No Opt. Call 
A+ 
4,814,018 
 
  
Series 2015, 5.637%, 4/01/50 
 
 
 
2,390 
  
San Francisco City and County Public Utilities Commission, California, Water Revenue Bonds, 
No Opt. Call 
AA– 
3,019,383 
 
  
Build America Taxable Bonds, Series 2010B, 6.000%, 11/01/40 
 
 
 
4,000 
  
San Francisco City and County, California, Certificates of Participation, 525 Golden Gate 
No Opt. Call 
AA 
9,618,000 
 
  
Avenue, San Francisco Public Utilities Commission Office Project, Tender Option Bond 
 
 
 
 
  
2016-XFT901, 24.796%, 11/01/41 (IF) (4) 
 
 
 
 
  
Stanton Redevelopment Agency, California, Tax Allocation Bonds, Stanton Consolidated 
 
 
 
 
  
Redevelopment Project Series 2011A: 
 
 
 
275 
  
6.500%, 12/01/17 (ETM) 
No Opt. Call 
A (5) 
281,100 
295 
  
6.750%, 12/01/18 (ETM) 
No Opt. Call 
A (5) 
316,868 
1,500 
  
University of California, General Revenue Bonds, Build America Taxable Bonds, Series 2009R, 
5/19 at 100.00 
AA 
1,612,605 
 
  
6.270%, 5/15/31 
 
 
 
2,505 
  
University of California, General Revenue Bonds, Limited Project, Build America Taxable Bond 
No Opt. Call 
AA– 
3,208,955 
 
  
Series 2010F, 5.946%, 5/15/45 
 
 
 
114,080 
  
Total California 
 
 
156,899,147 
 
  
Colorado – 0.7% (0.6% of Total Investments) 
 
 
 
3,100 
  
Denver School District 1, Colorado, General Obligation Bonds, Build America Taxable Bonds, 
No Opt. Call 
AA+ 
3,838,203 
 
  
Series 2009C, 5.664%, 12/01/33 
 
 
 
 
  
Connecticut – 1.2% (1.0% of Total Investments) 
 
 
 
6,300 
  
Harbor Point Infrastructure Improvement District, Connecticut, Special Obligation Revenue 
4/20 at 100.00 
N/R 
7,225,218 
 
  
Bonds, Harbor Point Project, Federally Taxable – Issuer Subsidy – Recovery Zone Economic 
 
 
 
 
  
Development Bond Series 2010B, 12.500%, 4/01/39 
 
 
 
 
  
District of Columbia – 0.2% (0.2% of Total Investments) 
 
 
 
1,155 
  
District of Columbia Water and Sewer Authority, Public Utility Revenue Bonds, Subordinate 
No Opt. Call 
AA+ 
1,435,838 
 
  
Lien, Build America Taxable Bond Series 2010A, 5.522%, 10/01/44 
 
 
 
 
  
Florida – 0.9% (0.8% of Total Investments) 
 
 
 
5,000 
  
Florida State Board of Education, Public Education Capital Outlay Bonds, Build America Taxable 
6/19 at 100.00 
AAA 
5,342,450 
 
  
Bonds, Series 2010G, 5.750%, 6/01/35 
 
 
 
 
  
Georgia – 5.6% (4.6% of Total Investments) 
 
 
 
2,500 
  
Cobb-Marietta Coliseum and Exhibit Hall Authority, Georgia, Revenue Bonds, Cobb County 
1/26 at 100.00 
AAA 
2,656,950 
 
  
Coliseum Project, Taxable Series 2015, 4.500%, 1/01/47 
 
 
 
9,000 
  
Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project J Bonds, Taxable Build 
No Opt. Call 
A+ 
11,079,810 
 
  
America Bonds Series 2010A, 6.637%, 4/01/57 
 
 
 
1,120 
  
Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project M Bonds, Taxable Build 
No Opt. Call 
A+ 
1,372,112 
 
  
America Bonds Series 2010A, 6.655%, 4/01/57 
 
 
 
15,000 
  
Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding 
No Opt. Call 
A– 
17,306,850 
 
  
Taxable Build America Bonds Series 2010A, 7.055%, 4/01/57 
 
 
 
27,620 
  
Total Georgia 
 
 
32,415,722 
 
  
Illinois – 9.2% (7.6% of Total Investments) 
 
 
 
865 
  
Chicago Transit Authority, Illinois, Sales and Transfer Tax Receipts Revenue Bonds, Pension 
No Opt. Call 
AA 
1,103,039 
 
  
Funding Taxable Series 2008A, 6.899%, 12/01/40 
 
 
 
7,735 
  
Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Federally Taxable Build 
No Opt. Call 
AA 
9,316,343 
 
  
America Bonds, Series 2010B, 6.200%, 12/01/40 
 
 
 
 
  
Chicago, Illinois, General Airport Revenue Bonds, O'Hare International Airport, Third Lien, 
 
 
 
 
  
Build America Taxable Bond Series 2010B: 
 
 
 
10,925 
  
6.845%, 1/01/38 
1/20 at 100.00 
A 
12,037,821 
355 
  
6.395%, 1/01/40 
No Opt. Call 
A 
480,865 
345 
  
Chicago, Illinois, Wastewater Transmission Revenue Bonds, Build America Taxable Bond Series 
No Opt. Call 
AA– 
440,292 
 
  
2010B, 6.900%, 1/01/40 
 
 
 
14,000 
  
Illinois State, General Obligation Bonds, Taxable Build America Bonds, Series 2010-3, 
No Opt. Call 
BBB 
14,404,180 
 
  
6.725%, 4/01/35 
 
 
 
8,090 
  
Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Build America Taxable Bonds, 
No Opt. Call 
AA– 
10,399,614 
 
  
Senior Lien Series 2009A, 6.184%, 1/01/34 
 
 
 
1,595 
  
Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Build America Taxable Bonds, 
No Opt. Call 
AA– 
2,006,622 
 
  
Senior Lien Series 2009B, 5.851%, 12/01/34 
 
 
 
2,000 
  
Lake County, Illinois, General Obligation Bonds, Series 2010A, 5.125%, 11/30/27 
11/19 at 100.00 
AAA 
2,147,200 
685 
  
Northern Illinois Municipal Power Agency, Power Project Revenue Bonds, Prairie State Project, 
No Opt. Call 
A2 
891,500 
 
  
Build America Taxable Bond Series 2010A, 7.820%, 1/01/40 
 
 
 
46,595 
  
Total Illinois 
 
 
53,227,476 
 
  
Indiana – 2.6% (2.1% of Total Investments) 
 
 
 
5,000 
  
Indiana University, Consolidated Revenue Bonds, Build America Taxable Bonds, Series 2010B, 
6/20 at 100.00 
AAA 
5,403,100 
 
  
5.636%, 6/01/35 
 
 
 
5,000 
  
Indianapolis Local Public Improvement Bond Bank, Indiana, Build America Bonds, Series 2010A-2, 
No Opt. Call 
Aa1 
6,387,100 
 
  
6.004%, 1/15/40 
 
 
 
2,390 
  
Indianapolis Local Public Improvement Bond Bank, Indiana, Build America Taxable Bonds, Series 
No Opt. Call 
AA 
3,085,203 
 
  
2010B-2, 6.116%, 1/15/40 
 
 
 
12,390 
  
Total Indiana 
 
 
14,875,403 
 
  
Kentucky – 1.7% (1.4% of Total Investments) 
 
 
 
5,000 
  
Kentucky Municipal Power Agency, Power System Revenue Bonds, Prairie State Project, Tender 
9/20 at 100.00 
AA 
7,183,750 
 
  
Option Bond Trust 2016-XFT902, 24.649%, 9/01/37 – AGC Insured (IF) (4) 
 
 
 
1,950 
  
Louisville and Jefferson County Metropolitan Sewer District, Kentucky, Sewer and Drainage 
No Opt. Call 
AA 
2,614,151 
 
  
System Revenue Bonds, Build America Taxable Bonds Series 2010A, 6.250%, 5/15/43 
 
 
 
6,950 
  
Total Kentucky 
 
 
9,797,901 
 
  
Louisiana – 3.8% (3.2% of Total Investments) 
 
 
 
20,350 
  
East Baton Rouge Sewerage Commission, Louisiana, Revenue Bonds, Series 2010, 
2/20 at 100.00 
AA 
22,109,868 
 
  
6.087%, 2/01/45 (UB) (4) 
 
 
 
 
  
Massachusetts – 0.9% (0.7% of Total Investments) 
 
 
 
2,000 
  
Massachusetts, Transportation Fund Revenue Bonds, Accelerated Bridge Program, Tender Option 
No Opt. Call 
AAA 
4,967,300 
 
  
Bond Trust 2016-XFT907, 21.010%, 6/01/40 (IF) (4) 
 
 
 
 
  
Michigan – 1.0% (0.9% of Total Investments) 
 
 
 
6,070 
  
Michigan Tobacco Settlement Finance Authority, Tobacco Settlement Asset-Backed Revenue Bonds, 
6/22 at 100.00 
B– 
5,972,455 
 
  
Taxable Turbo Series 2006A, 7.309%, 6/01/34 
 
 
 
 
  
Missouri – 0.3% (0.2% of Total Investments) 
 
 
 
1,290 
  
Curators of the University of Missouri, System Facilities Revenue Bonds, Build America Taxable 
No Opt. Call 
AA+ 
1,649,394 
 
  
Bonds, Series 2009A, 5.960%, 11/01/39 
 
 
 
 
  
Nevada – 5.4% (4.5% of Total Investments) 
 
 
 
13,890 
  
Clark County, Nevada, Airport Revenue Bonds, Senior Lien Series 2009B, 6.881%, 7/01/42 
7/19 at 100.00 
Aa2 
15,216,356 
10,150 
  
Clark County, Nevada, Airport Revenue Bonds, Taxable Direct Payment Build America Bond Series 
No Opt. Call 
Aa2 
14,807,125 
 
  
2010C, 6.820%, 7/01/45 
 
 
 
1,315 
  
Las Vegas, Nevada, Certificates of Participation, City Hall Project, Build America Federally 
9/19 at 100.00 
AA– (5) 
1,473,615 
 
  
Taxable Bonds, Series 2009B, 7.800%, 9/01/39 (Pre-refunded 9/01/19) 
 
 
 
25,355 
  
Total Nevada 
 
 
31,497,096 
 
  
New Jersey – 4.3% (3.6% of Total Investments) 
 
 
 
2,500 
  
New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Build America 
6/19 at 100.00 
A– 
2,633,300 
 
  
Bonds Issuer Subsidy Program, Series 2009B, 6.875%, 12/15/39 
 
 
 
130 
  
New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Build America 
12/20 at 100.00 
A– 
136,267 
 
  
Bonds Issuer Subsidy Program, Series 2010C, 6.104%, 12/15/28 
 
 
 
4,190 
  
New Jersey Turnpike Authority, Revenue Bonds, Build America Taxable Bonds, Series 2009F, 
No Opt. Call 
A+ 
6,308,087 
 
  
7.414%, 1/01/40 
 
 
 
10,910 
  
New Jersey Turnpike Authority, Revenue Bonds, Build America Taxable Bonds, Series 2010A, 
No Opt. Call 
A+ 
15,941,692 
 
  
7.102%, 1/01/41 
 
 
 
17,730 
  
Total New Jersey 
 
 
25,019,346 
 
  
New York – 17.5% (14.6% of Total Investments) 
 
 
 
25,000 
  
Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, Series 
No Opt. Call 
AAA 
31,587,750 
 
  
2010, 5.600%, 3/15/40 (UB) (4) 
 
 
 
5,100 
  
Long Island Power Authority, New York, Electric System Revenue Bonds, Build America Taxable 
No Opt. Call 
A– 
6,239,850 
 
  
Bond Series 2010B, 5.850%, 5/01/41 
 
 
 
7,965 
  
Metropolitan Transportation Authority, New York, Dedicated Tax Fund Bonds, Build America 
No Opt. Call 
AA 
12,089,118 
 
  
Taxable Bonds, Series 2010C, 7.336%, 11/15/39 
 
 
 
14,000 
  
New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue 
12/20 at 100.00 
AA+ 
15,733,620 
 
  
Bonds, Second Generation Resolution, Build America Taxable Bonds, Fiscal 2011 Series 2010CC, 
 
 
 
 
  
6.282%, 6/15/42 
 
 
 
1,000 
  
New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue 
6/20 at 100.00 
AA+ 
1,094,890 
 
  
Bonds, Second Generation Resolution, Build America Taxable Bonds, Fiscal 2011 Series AA, 
 
 
 
 
  
5.790%, 6/15/41 
 
 
 
2,595 
  
New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue 
No Opt. Call 
AA+ 
3,517,367 
 
  
Bonds, Second Generation Resolution, Build America Taxable Bonds, Series 2010DD, 
 
 
 
 
  
5.952%, 6/15/42 
 
 
 
 
  
New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue 
 
 
 
 
  
Bonds, Second Generation Resolution, 
 
 
 
2,025 
  
New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue 
No Opt. Call 
AA+ 
2,744,766 
 
  
Bonds, Second Generation Resolution, Series 2010DD, 5.952%, 6/15/42 (UB) 
 
 
 
1,595 
  
New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue 
No Opt. Call 
AA+ 
4,435,296 
 
  
Bonds, Second Generation Resolution, Taxable Tender Option Bonds Trust 2016-XFT908, 
 
 
 
 
  
22.408%, 6/15/44 (IF) 
 
 
 
6,690 
  
New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Build 
No Opt. Call 
AA 
8,953,227 
 
  
America Taxable Bond Fiscal 2011 Series 2010S-1B, 6.828%, 7/15/40 
 
 
 
10,000 
  
New York City Transitional Finance Authority, New York, Future Tax Secured Bonds, Build 
No Opt. Call 
AAA 
12,529,200 
 
  
America Taxable Bonds, Series 2010G-1, 5.467%, 5/01/40 (4) 
 
 
 
3,000 
  
New York Transportation Development Corporation, Special Facilities Bonds, LaGuardia Airport 
No Opt. Call 
BBB 
2,906,340 
 
  
Terminal B Redevelopment Project, Taxable Series 2016B, 3.673%, 7/01/30 
 
 
 
78,970 
  
Total New York 
 
 
101,831,424 
 
  
North Carolina – 1.9% (1.5% of Total Investments) 
 
 
 
10,100 
  
North Carolina Turnpike Authority, Triangle Expressway System State Annual Appropriation 
1/19 at 100.00 
AA 
10,756,702 
 
  
Revenue Bonds, Federally Taxable Issuer Subsidy Build America Bonds, Series 2009B, 
 
 
 
 
  
6.700%, 1/01/39 
 
 
 
 
  
Ohio – 7.8% (6.5% of Total Investments) 
 
 
 
10,700 
  
American Municipal Power Inc., Ohio, Combined Hydroelectric Projects Revenue Bonds, Build 
No Opt. Call 
A 
15,873,450 
 
  
America Bond Series 2010B, 7.834%, 2/15/41 
 
 
 
4,000 
  
American Municipal Power Ohio Inc., Prairie State Energy Campus Project Revenue Bonds, Build 
No Opt. Call 
A1 
4,991,720 
 
  
America Bond Series 2009C, 6.053%, 2/15/43 
 
 
 
25 
  
Jobs Ohio Beverage System, Ohio, Statewide Liquor Profits Revenue Bonds, Senior Lien Taxable 
No Opt. Call 
AA 
27,644 
 
  
Series 2013B, 4.532%, 1/01/35 
 
 
 
15,500 
  
Northeast Ohio Regional Sewer District, Wastewater Improvement Revenue Bonds, Build America 
11/20 at 100.00 
AA+ 
17,279,710 
 
  
Taxable Bonds, Series 2010, 6.038%, 11/15/40 
 
 
 
7,500 
  
Port of Greater Cincinnati Development Authority, Ohio, Special Obligation TIF Revenue Bonds, 
1/26 at 100.00 
N/R 
7,298,775 
 
  
Cooperative Township Public Parking, Kenwood Collection Redevelopment, Senior Lien 
 
 
 
 
  
Series 2016A, 6.600%, 1/01/39 
 
 
 
37,725 
  
Total Ohio 
 
 
45,471,299 
 
  
Oregon – 2.5% (2.1% of Total Investments) 
 
 
 
4,000 
  
Oregon Department of Administrative Services, Certificates of Participation, Federally Taxable 
5/20 at 100.00 
AA 
6,021,999 
 
  
Build America Bonds, Tender Option Bond Trust 2016-TXG001, 22.325%, 5/01/35 (IF) (4) 
 
 
 
8,030 
  
Warm Springs Reservation Confederated Tribes, Oregon, Tribal Economic Development Bonds, 
No Opt. Call 
A3 
8,592,374 
 
  
Hydroelectric Revenue Bonds, Pelton Round Butte Project, Refunding Series 2009A, 
 
 
 
 
  
8.250%, 11/01/19 
 
 
 
12,030 
  
Total Oregon 
 
 
14,614,373 
 
  
Pennsylvania – 1.4% (1.1% of Total Investments) 
 
 
 
 
  
Commonwealth Financing Authority, Pennsylvania, State Appropriation Lease Bonds, Build America 
 
 
 
 
  
Taxable Bonds, Series 2009D: 
 
 
 
1,225 
  
5.653%, 6/01/24 
No Opt. Call 
A+ 
1,374,119 
1,915 
  
6.218%, 6/01/39 
No Opt. Call 
A+ 
2,437,987 
2,000 
  
Pennsylvania State, General Obligation Bonds, Build America Taxable Bonds, Third Series 2010B, 
7/20 at 100.00 
Aa3 
2,182,760 
 
  
5.850%, 7/15/30 
 
 
 
1,535 
  
Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Build America Taxable Bonds, Series 
No Opt. Call 
A1 
2,002,346 
 
  
2009A, 6.105%, 12/01/39 
 
 
 
6,675 
  
Total Pennsylvania 
 
 
7,997,212 
 
  
South Carolina – 0.5% (0.4% of Total Investments) 
 
 
 
55 
  
South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper, 
No Opt. Call 
A+ 
106,178 
 
  
Federally Taxable Build America Tender Option Bond Trust 2016-XFT909, 23.190%, 1/01/50 (IF) 
 
 
 
2,245 
  
South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper, 
No Opt. Call 
A+ 
2,662,795 
 
  
Federally Taxable Build America Series 2010C, 6.454%, 1/01/50 (UB) 
 
 
 
2,300 
  
Total South Carolina 
 
 
2,768,973 
 
  
Tennessee – 1.9% (1.6% of Total Investments) 
 
 
 
5,000 
  
Metropolitan Government Nashville & Davidson County Convention Center Authority, Tennessee, 
No Opt. Call 
A1 
6,758,600 
 
  
Tourism Tax Revenue Bonds, Build America Taxable Bonds, Series 2010A-2, 7.431%, 7/01/43 
 
 
 
3,290 
  
Metropolitan Government Nashville & Davidson County Convention Center Authority, Tennessee, 
No Opt. Call 
Aa3 
4,416,595 
 
  
Tourism Tax Revenue Bonds, Build America Taxable Bonds, Subordinate Lien Series 2010B, 
 
 
 
 
  
6.731%, 7/01/43 
 
 
 
8,290 
  
Total Tennessee 
 
 
11,175,195 
 
  
Texas – 10.8% (9.0% of Total Investments) 
 
 
 
1,000 
  
Bexar County Hospital District, Texas, Certificates of Obligation, Taxable Build America Bond 
2/19 at 100.00 
AA+ 
1,071,990 
 
  
Series 2009B, 6.904%, 2/15/39 
 
 
 
9,280 
  
Dallas Convention Center Hotel Development Corporation, Texas, Hotel Revenue Bonds, Build 
No Opt. Call 
A– 
12,382,861 
 
  
America Taxable Bonds, Series 09B, 7.088%, 1/01/42 
 
 
 
2,200 
  
Dallas Independent School District, Dallas County, Texas, General Obligation Bonds, School 
2/21 at 100.00 
AAA 
2,509,474 
 
  
Building, Build America Taxable Bond Series 2010C, 6.450%, 2/15/35 
 
 
 
3,250 
  
Houston, Texas, General Obligation Bonds, Public Improvement, Build America Bond Series 2010B, 
3/20 at 100.00 
AA 
3,564,925 
 
  
6.319%, 3/01/30 
 
 
 
10,785 
  
North Texas Tollway Authority, System Revenue Bonds, Taxable Build America Bond Series 2009B, 
No Opt. Call 
A1 
15,763,572 
 
  
6.718%, 1/01/49 
 
 
 
10,220 
  
North Texas Tollway Authority, System Revenue Bonds, Taxable Build America Bonds, Series 
2/20 at 100.00 
Baa2 
11,732,049 
 
  
2010-B2, 8.910%, 2/01/30 
 
 
 
1,000 
  
San Antonio, Texas, Electric and Gas System Revenue Bonds, Junior Lien, Build America Taxable 
No Opt. Call 
AA+ 
1,281,360 
 
  
Bond Series 2010A, 5.808%, 2/01/41 
 
 
 
10 
  
San Antonio, Texas, Electric and Gas System Revenue Bonds, Series 2012, 4.427%, 2/01/42 
No Opt. Call 
Aa1 
10,954 
5,000 
  
San Antonio, Texas, General Obligation Bonds, Build America Taxable Bonds, Series 2010B, 
8/20 at 100.00 
AAA 
5,526,850 
 
  
6.038%, 8/01/40 
 
 
 
7,015 
  
Texas State, General Obligation Bonds, Transportation Commission, Build America Taxable Bonds, 
No Opt. Call 
AAA 
9,157,872 
 
  
Series 2009A, 5.517%, 4/01/39 
 
 
 
49,760 
  
Total Texas 
 
 
63,001,907 
 
  
Utah – 0.9% (0.8% of Total Investments) 
 
 
 
4,000 
  
Central Utah Water Conservancy District, Utah, Revenue Bonds, Federally Taxable Build America 
4/20 at 100.00 
AA+ 
4,300,440 
 
  
Bonds, Series 2010A, 5.700%, 10/01/40 
 
 
 
1,000 
  
Tooele County Municipal Building Authority, Utah, Lease Revenue Bonds, Build America Bond 
12/20 at 100.00 
A+ 
1,105,180 
 
  
Series 2010A-2, 8.000%, 12/15/32 
 
 
 
5,000 
  
Total Utah 
 
 
5,405,620 
 
  
Virginia – 4.3% (3.6% of Total Investments) 
 
 
 
 
  
Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Second Senior Lien 
 
 
 
 
  
Revenue Bonds, Build America Bonds, Series 2009D: 
 
 
 
1,000 
  
7.462%, 10/01/46 – AGM Insured 
No Opt. Call 
AA 
1,511,200 
11,930 
  
7.462%, 10/01/46 – AGC Insured 
No Opt. Call 
BBB+ 
17,435,456 
7,125 
  
Tobacco Settlement Financing Corporation of Virginia, Tobacco Settlement Asset Backed Bonds, 
9/17 at 100.00 
B– 
6,240,930 
 
  
Refunding Senior Lien Series 2007A, 6.706%, 6/01/46 
 
 
 
20,055 
  
Total Virginia 
 
 
25,187,586 
 
  
Washington – 3.8% (3.2% of Total Investments) 
 
 
 
4,000 
  
Seattle, Washington, Municipal Light and Power Revenue Bonds, Federally Taxable Build America 
No Opt. Call 
AA 
7,651,200 
 
  
Bonds, Tender Option Bond Trust 2016-XFT905, 20.284%, 2/01/40 (IF) (4) 
 
 
 
11,090 
  
Washington State Convention Center Public Facilities District, Lodging Tax Revenue Bonds, 
No Opt. Call 
Aa3 
14,400,254 
 
  
Build America Taxable Bond Series 2010B, 6.790%, 7/01/40 
 
 
 
15,090 
  
Total Washington 
 
 
22,051,454 
 
  
West Virginia – 0.6% (0.5% of Total Investments) 
 
 
 
3,730 
  
Tobacco Settlement Finance Authority, West Virginia, Tobacco Settlement Asset-Backed Bonds, 
6/25 at 100.00 
B2 
3,609,111 
 
  
Taxable Turbo Series 2007A, 7.467%, 6/01/47 
 
 
 
$ 550,710 
  
Total Municipal Bonds (cost $601,812,945) 
 
 
695,725,523 
 
             
Principal 
  
 
 
 
 
 
Amount (000) 
  
Description (1) 
Coupon 
Maturity 
Ratings (3) 
Value 
 
  
CORPORATE BONDS – 0.5% (0.4% of Total Investments) 
 
 
 
 
             
 
  
Diversified Consumer Services – 0.5% (0.4% of Total Investments) 
 
 
 
 
$ 3,015 
  
BCOM Investment Partners LLC, Taxable Notes, Burrell College of Osteopathic Medicine, 
7.500% 
9/01/45 
N/R 
$ 3,068,459 
 
  
Series 2015, 144A 
 
 
 
 
$ 3,015 
  
Total Corporate Bonds (cost $3,015,000) 
 
 
 
3,068,459 
 
  
Total Long-Term Investments (cost $604,827,945) 
 
 
 
698,793,982 
 
Principal 
  
 
 
 
 
 
Amount (000) 
  
Description (1) 
Coupon 
Maturity 
 
Value 
 
  
SHORT-TERM INVESTMENTS - 0.1% (0.1% of Total Investments) 
 
 
 
 
             
 
  
REPURCHASE AGREEMENTS - 0.1% (0.1% of Total Investments) 
 
 
 
 
$ 742 
  
Repurchase Agreement with Fixed Income Clearing Corporation, dated 6/30/17, 
0.120% 
7/03/17 
 
$ 742,060 
 
  
repurchase price $742,067, collateralized by $775,000 U.S. Treasury Notes, 
 
 
 
 
 
  
2.000%, 11/15/26, value $759,863 
 
 
 
 
 
  
Total Short-Term Investments (cost $742,060) 
 
 
 
742,060 
 
  
Total Investments (cost $605,570,005) – 120.3% 
 
 
 
699,536,042 
 
  
Borrowings – (15.5)% (6), (7) 
 
 
 
(90,175,000) 
 
  
Floating Rate Obligations – (8.2)% 
 
 
 
(47,700,000) 
 
  
Other Assets Less Liabilities – 3.4% (8) 
 
 
 
19,826,223 
 
  
Net Assets Applicable to Common Shares – 100% 
 
 
 
$ 581,487,265 
 
                     
Investments In Derivatives as of June 30, 2017 
 
 
 
 
 
 
 
                   
Interest Rate Swaps (OTC Uncleared) 
 
 
 
 
 
 
 
 
                   
 
 
Fund 
 
 
Fixed Rate 
 
Optional 
 
 
Unrealized 
 
Notional 
Pay/Receive 
Floating Rate 
Fixed Rate 
Payment 
Effective 
Termination 
Termination 
 
Appreciation 
Counterparty 
Amount 
Floating Rate 
Index 
(Annualized) 
Frequency 
Date (9) 
Date 
Date 
Value 
(Depreciation) 
Morgan Stanley 
 
 
 
 
 
 
 
 
 
 
Capital Services
     1-Month USD-               
LLC 
$121,000,000 
Receive 
LIBOR-ICE 
1.500% 
Monthly 
7/03/17 
12/01/17 
12/01/19 
$(128,052) 
$(1,959,052) 
 
                     
Interest Rate Swaps (OTC Cleared) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Variation 
 
 
 
Fund 
 
 
Fixed Rate 
 
Optional 
 
Margin 
Unrealized 
 
Notional 
Pay/Receive 
Floating Rate 
Fixed Rate 
Payment 
Effective 
Termination 
Termination 
Receivable/ 
Appreciation 
Clearing Broker 
Amount 
Floating Rate 
Index 
(Annualized) 
Frequency 
Date (9) 
Date 
Date 
(Payable) (Depreciation) 
Citigroup Global 
 
 
3-Month USD- 
 
 
 
 
 
 
 
Markets Inc.* 
$47,500,000 
Receive 
LIBOR-ICE 
2.769% 
Semi-Annually 
1/10/18 
N/A 
1/10/40 
$267,874 
$(1,828,599) 
Citigroup Global 
 
 
 3-Month USD- 
 
 
 
 
 
 
 
Markets Inc.* 
19,100,000 
Receive 
LIBOR-ICE 
1.731 
Semi-Annually 
8/11/17 
N/A 
8/11/46 
100,962 
3,285,826 
Citigroup Global 
 
 
 3-Month USD- 
 
 
 
 
 
 
 
Markets Inc.* 
15,500,000 
Receive 
LIBOR-ICE 
1.775 
Semi-Annually 
8/25/17 
7/06/26 (10) 
8/25/46 
82,489 
2,525,676 
 
$82,100,000 
 
 
 
 
 
 
 
$451,325 
$3,982,903 
* LCH.Clearnet Ltd is the clearing house for this transaction.
Fair Value Measurements
Fair value is defined as the price that would be received upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. A three-tier hierarchy is used to maximize the use of observable market data and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability. Observable inputs are based on market data obtained from sources independent of the reporting entity. Unobservable inputs reflect the reporting entity's own assumptions about the assumptions market participants would use in pricing the asset or liability. Unobservable inputs are based on the best information available in the circumstances. The following is a summary of the three-tiered hierarchy of valuation input levels.
Level 1 – Inputs are unadjusted and prices are determined using quoted prices in active markets for identical securities.
Level 2 – Prices are determined using other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.).
Level 3 – Prices are determined using significant unobservable inputs (including management's assumptions in determining the fair value of investments).
The inputs or methodologies used for valuing securities are not an indication of the risk associated with investing in those securities. The following is a summary of the Fund's fair value measurements as of the end of the reporting period:
         
 
Level 1 
Level 2 
Level 3 
Total 
Long-Term Investments: 
 
 
 
 
Municipal Bonds 
$ — 
$695,725,523 
$ — 
$695,725,523 
Corporate Bonds 
— 
3,068,459 
— 
3,068,459 
Short-Term Investments: 
 
 
 
 
Repurchase Agreements 
— 
742,060 
— 
742,060 
Investments in Derivatives: 
 
 
 
 
Interest Rate Swaps* 
— 
2,023,851 
— 
2,023,851 
Total 
$ — 
$701,559,893 
$ — 
$701,559,893 
* Represents net unrealized appreciation (depreciation).
Income Tax Information
The following information is presented on an income tax basis. Differences between amounts for financial statement and federal income tax purposes are primarily due to timing differences in recognizing certain gains and losses on investment transactions and the treatment of investments in inverse floating rate securities reflected as financing transactions, if any. To the extent that differences arise that are permanent in nature, such amounts are reclassified within the capital accounts on the Statement of Assets and Liabilities presented in the annual report, based on their federal tax basis treatment; temporary differences do not require reclassification. Temporary and permanent differences do not impact the net asset value of the Fund.
As of June 30, 2017, the cost of investments (excluding investments in derivatives) was $562,130,777.
Gross unrealized appreciation and gross unrealized depreciation of investments (excluding investments in derivatives) as of June 30, 2017, were as follows:
Gross unrealized: 
 
Appreciation 
$92,432,722 
Depreciation 
(2,731,179) 
Net unrealized appreciation (depreciation) of investments 
$89,701,543 
 
     
(1) 
  
All percentages shown in the Portfolio of Investments are based on net assets applicable to common shares 
 
  
unless otherwise noted. 
(2) 
  
Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There 
 
  
may be other call provisions at varying prices at later dates. Certain mortgage-backed securities may be 
 
  
subject to periodic principal paydowns. 
(3) 
  
For financial reporting purposes, the ratings disclosed are the highest of Standard & Poor's Group 
 
  
("Standard & Poor's"), Moody's Investors Service, Inc. ("Moody's") or Fitch, Inc. ("Fitch") rating. This 
 
  
treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment 
 
  
policies. Ratings below BBB by Standard & Poor's, Baa by Moody's or BBB by Fitch are considered to be 
 
  
below investment grade. Holdings designated N/R are not rated by any of these national rating agencies. 
(4) 
  
Investment, or portion of investment, has been pledged to collateralize the net payment obligations for 
 
  
investments in derivatives and/or inverse floating rate transactions. 
(5) 
  
Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities, 
 
  
which ensure the timely payment of principal and interest. Certain bonds backed by U.S. Government or 
 
  
agency securities are regarded as having an implied rating equal to the rating of such securities. 
(6) 
  
Borrowings as a percentage of Total Investments is 12.9%. 
(7) 
  
The Fund may pledge up to 100% of its eligible investments (excluding any investments separately pledged 
 
  
as collateral for specific investments in derivatives, when applicable) as collateral for borrowings. 
(8) 
  
Other assets less liabilities includes the unrealized appreciation (depreciation) of certain over-the-counter 
 
  
("OTC") derivatives as well as the unrealized appreciation (depreciation) of OTC-cleared and exchange-traded 
 
  
derivatives, when applicable. 
(9) 
  
Effective date represents the date on which both the Fund and counterparty commence interest payment 
 
  
accruals on each contract. 
(10) 
  
This interest rate swap has an optional early termination date beginning on July 6, 2026 and every five 
 
  
years thereafter through the termination date as specified in the swap contract. 
(ETM) 
  
Escrowed to maturity. 
(IF) 
  
Inverse floating rate investment. 
(UB) 
  
Underlying bond of an inverse floating rate trust reflected as a financing transaction. 
144A 
  
Investment is exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These 
 
  
investments may only be resold in transactions exempt from registration, which are normally those 
 
  
transactions with qualified institutional buyers. 
N/A 
  
Not applicable. 
USD-LIBOR-ICE 
  
United States Dollar-London Inter-Bank Offered Rate-Intercontinental Exchange 
 
 
 
Item 2. Controls and Procedures.

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") (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).
 
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 (17 CFR 270.30a-3(d)) 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.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: See EX-99 CERT attached hereto.

 
 
SIGNATURES

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.
 
(Registrant)  Nuveen Build America Bond Fund 
 
By (Signature and Title) /s/ Gifford R. Zimmerman            
       Gifford R. Zimmerman
     Vice President and Secretary
                                         
Date:         August 29, 2017        
 
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
 
By (Signature and Title) /s/ Cedric H. Antosiewicz            
       Cedric H. Antosiewicz
     Chief Administrative Officer (principal executive officer)
                        
Date:         August 29, 2017        
 
By (Signature and Title) /s/ Stephen D. Foy                         
 
     Stephen D. Foy
     Vice President and Controller (principal financial officer)
                                                                                         
Date:         August 29, 2017