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 811-22425

 

Nuveen Build America Bond Opportunity 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 Opportunity Fund (NBD)
		June 30, 2017 (Unaudited)
Principal			Optional Call
Amount (000)		Description (1)	Provisions (2)	Ratings (3)	Value
		LONG-TERM INVESTMENTS – 104.8% (99.3% of Total Investments)
		MUNICIPAL BONDS – 104.0% (98.5% of Total Investments)
		California – 22.9% (21.7% of Total Investments)
$ 1,500		California State Public Works Board, Lease Revenue Bonds, Various Capital Projects, Build	No Opt. Call	A+	$ 2,253,480
		America Taxable Bond Series 2009G-2, 8.361%, 10/01/34
3,500		California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda	No Opt. Call	BB+	3,710,140
		University Medical Center, Series 2014B, 6.000%, 12/01/24
1,000		Los Angeles Community College District, California, General Obligation Bonds, Build America	No Opt. Call	AA+	1,444,590
		Taxable Bonds, Series 2010, 6.600%, 8/01/42
2,000		Los Angeles Community College District, Los Angeles County, California, General Obligation	No Opt. Call	Aa1	7,186,100
		Bonds, Tender Option Bond Trust 2016-XTG002, 26.059%, 8/01/49 (IF) (4)
1,150		Los Angeles Department of Airports, California, Revenue Bonds, Los Angeles International	No Opt. Call	AA–	1,493,597
		Airport, Build America Taxable Bonds, Series 2009C, 6.582%, 5/15/39
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)
775		Oakland Redevelopment Agency, California, Subordinated Housing Set Aside Revenue Bonds,	No Opt. Call	AA–	823,585
		Federally Taxable Series 2011A-T, 7.500%, 9/01/19
2,200		San Diego County Regional Transportation Commission, California, Sales Tax Revenue Bonds,	No Opt. Call	AAA	2,922,194
		Build America Taxable Bonds Series 2010A, 5.911%, 4/01/48
1,500		San Francisco City and County Public Utilities Commission, California, Water Revenue Bonds,	No Opt. Call	AA–	2,202,435
		Build America Taxable Bonds, Series 2010G, 6.950%, 11/01/50
675		San Francisco City and County Redevelopment Financing Authority, California, Tax Allocation	No Opt. Call	AA–	930,784
		Revenue Bonds, San Francisco Redevelopment Projects, Taxable Series 2009E, 8.406%, 8/01/39
2,000		San Francisco City and County, California, Certificates of Participation, 525 Golden Gate	No Opt. Call	AA	4,809,000
		Avenue, San Francisco Public Utilities Commission Office Project, Tender Option Bond
		2016-XFT901, 24.796%, 11/01/41 (IF) (4)
315		Stanton Redevelopment Agency, California, Tax Allocation Bonds, Stanton Consolidated	No Opt. Call	A (5)	354,681
		Redevelopment Project Series 2011A, 7.000%, 12/01/19 (ETM)
2,000		University of California Regents, Medical Center Pooled Revenue Bonds, Taxable Build America	No Opt. Call	AA–	2,721,400
		Bonds, Series 2010H, 6.548%, 5/15/48
20,615		Total California			37,623,086
		Colorado – 5.2% (5.0% of Total Investments)
4,000		Colorado State Bridge Enterprise Revenue Bonds, Federally Taxable Build America Series 2010A,	No Opt. Call	AA	5,119,840
		6.078%, 12/01/40
2,585		Regional Transportation District, Colorado, Sales Tax Revenue Bonds, Fastracks Project, Build	No Opt. Call	AA+	3,488,561
		America Series 2010B, 5.844%, 11/01/50
6,585		Total Colorado			8,608,401
		Connecticut – 1.0% (0.9% of Total Investments)
1,355		Harbor Point Infrastructure Improvement District, Connecticut, Special Obligation Revenue	4/20 at 100.00	N/R	1,553,995
		Bonds, Harbor Point Project, Federally Taxable – Issuer Subsidy – Recovery Zone Economic
		Development Bond Series 2010B, 12.500%, 4/01/39
		Georgia – 2.8% (2.6% of Total Investments)
1,000		Cobb-Marietta Coliseum and Exhibit Hall Authority, Georgia, Revenue Bonds, Cobb County	1/26 at 100.00	AAA	1,062,780
		Coliseum Project, Taxable Series 2015, 4.500%, 1/01/47
3,000		Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding	No Opt. Call	A–	3,461,370
		Taxable Build America Bonds Series 2010A, 7.055%, 4/01/57
4,000		Total Georgia			4,524,150
		Illinois – 10.5% (10.0% of Total Investments)
3,715		Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Federally Taxable Build	No Opt. Call	AA	4,474,495
		America Bonds, Series 2010B, 6.200%, 12/01/40
1,255		Chicago, Illinois, General Airport Revenue Bonds, O'Hare International Airport, Third Lien,	1/20 at 100.00	A	1,382,834
		Build America Taxable Bond Series 2010B, 6.845%, 1/01/38
2,000		Illinois State, General Obligation Bonds, Build America Taxable Bonds, Series 2010-5,	No Opt. Call	BBB	2,147,840
		7.350%, 7/01/35
5,000		Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Build America Taxable Bonds,	No Opt. Call	AA–	6,427,450
		Senior Lien Series 2009A, 6.184%, 1/01/34
2,000		Lake County, Illinois, General Obligation Bonds, Series 2010A, 5.250%, 11/30/28	11/19 at 100.00	AAA	2,141,220
365		Northern Illinois Municipal Power Agency, Power Project Revenue Bonds, Prairie State Project,	No Opt. Call	A2	435,197
		Build America Bond Series 2009C, 6.859%, 1/01/39
205		Northern Illinois Municipal Power Agency, Power Project Revenue Bonds, Prairie State Project,	No Opt. Call	A2	266,799
		Build America Taxable Bond Series 2010A, 7.820%, 1/01/40
14,540		Total Illinois			17,275,835
		Indiana – 0.8% (0.7% of Total Investments)
1,000		Indianapolis Local Public Improvement Bond Bank, Indiana, Build America Taxable Bonds, Series	No Opt. Call	AA	1,290,880
		2010B-2, 6.116%, 1/15/40
		Kentucky – 2.5% (2.3% of Total Investments)
3,000		Louisville and Jefferson County Metropolitan Sewer District, Kentucky, Sewer and Drainage	No Opt. Call	AA	4,021,770
		System Revenue Bonds, Build America Taxable Bonds Series 2010A, 6.250%, 5/15/43
		Massachusetts – 3.0% (2.9% of Total Investments)
2,000		Massachusetts, Transpiration 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 – 1.2% (1.1% of Total Investments)
1,960		Michigan Tobacco Settlement Finance Authority, Tobacco Settlement Asset-Backed Revenue Bonds,	6/22 at 100.00	B–	1,928,503
		Taxable Turbo Series 2006A, 7.309%, 6/01/34
		Mississippi – 1.5% (1.4% of Total Investments)
2,085		Mississippi State, General Obligation Bonds, Build America Taxable Bond Series 2010F,	No Opt. Call	AA	2,497,934
		5.245%, 11/01/34
		Nevada – 2.6% (2.5% of Total Investments)
1,965		Clark County, Nevada, Airport Revenue Bonds, Senior Lien Series 2009B, 6.881%, 7/01/42	7/19 at 100.00	Aa2	2,152,638
1,500		Clark County, Nevada, Airport Revenue Bonds, Taxable Direct Payment Build America Bond Series	No Opt. Call	Aa2	2,188,245
		2010C, 6.820%, 7/01/45
3,465		Total Nevada			4,340,883
		New Jersey – 4.5% (4.3% of Total Investments)
3,390		New Jersey Turnpike Authority, Revenue Bonds, Build America Taxable Bonds, Series 2010A,	No Opt. Call	A+	4,953,468
		7.102%, 1/01/41
2,000		Rutgers State University, New Jersey, Revenue Bonds, Build America Taxable Bond Series 2010H,	No Opt. Call	Aa3	2,422,780
		5.665%, 5/01/40
5,390		Total New Jersey			7,376,248
		New York – 13.1% (12.4% of Total Investments)
2,000		Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, Tender	No Opt. Call	AAA	4,635,100
		Option Bond trust 2016-XFT903, 20.246%, 3/15/40 (IF) (4)
1,270		Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Federally	11/33 at 100.00	AA–	1,739,316
		Taxable Issuer Subsidy Build America Bonds, Series 2010A, 6.668%, 11/15/39
1,500		New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue	No Opt. Call	AA+	1,929,945
		Bonds, Second Generation Resolution, Build America Taxable Bonds, Fiscal 2011 Series AA,
		5.440%, 6/15/43 (4)
2,000		New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue	No Opt. Call	AA+	5,561,500
		Bonds, Second Generation Resolution, Taxable Tender Option Bonds Trust 2016-XFT908,
		22.408%, 6/15/44 (IF)
3,750		New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Build	No Opt. Call	AA	5,018,625
		America Taxable Bond Fiscal 2011 Series 2010S-1B, 6.828%, 7/15/40
1,500		New York City, New York, General Obligation Bonds, Federally Taxable Build America Bonds,	12/20 at 100.00	AA	1,699,740
		Series 2010-F1, 6.646%, 12/01/31
1,000		New York Transportation Development Corporation, Special Facilities Bonds, LaGuardia Airport	No Opt. Call	BBB	968,780
		Terminal B Redevelopment Project, Taxable Series 2016B, 3.673%, 7/01/30
13,020		Total New York			21,553,006
		North Carolina – 1.3% (1.2% of Total Investments)
1,955		North Carolina Turnpike Authority, Triangle Expressway System State Annual Appropriation	1/19 at 100.00	AA	2,082,114
		Revenue Bonds, Federally Taxable Issuer Subsidy Build America Bonds, Series 2009B,
		6.700%, 1/01/39
		Ohio – 7.1% (6.7% of Total Investments)
1,500		American Municipal Power Inc., Ohio, Meldahl Hydroelectric Projects Revenue Bonds, Build	No Opt. Call	A	2,148,345
		America Bond Series 2010B, 7.499%, 2/15/50
2,690		American Municipal Power Ohio Inc., Prairie State Energy Campus Project Revenue Bonds, Build	No Opt. Call	A1	3,356,932
		America Bond Series 2009C, 6.053%, 2/15/43
2,850		Northeast Ohio Regional Sewer District, Wastewater Improvement Revenue Bonds, Build America	11/20 at 100.00	AA+	3,177,237
		Taxable Bonds, Series 2010, 6.038%, 11/15/40
3,075		Port of Greater Cincinnati Development Authority, Ohio, Special Obligation TIF Revenue Bonds,	1/26 at 100.00	N/R	2,992,498
		Cooperative Township Public Parking, Kenwood Collection Redevelopment, Senior Lien Series
		2016A, 6.600%, 1/01/39
10,115		Total Ohio			11,675,012
		Pennsylvania – 2.1% (2.0% of Total Investments)
2,715		Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Build America Taxable Bonds, Series	No Opt. Call	A1	3,394,374
		2010B, 5.511%, 12/01/45
		South Carolina – 5.1% (4.8% of Total Investments)
6,735		South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper,	No Opt. Call	A+	7,988,384
		Federally Taxable Build America Series 2010C, 6.454%, 1/01/50 (UB)
155		South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper,	No Opt. Call	A+	299,228
		Federally Taxable Build America Tender Option Bond Trust 2016-XFT909, 23.190%, 1/01/50 (IF)
6,890		Total South Carolina			8,287,612
		Tennessee – 3.3% (3.1% of Total Investments)
4,060		Metropolitan Government Nashville & Davidson County Convention Center Authority, Tennessee,	No Opt. Call	Aa3	5,450,266
		Tourism Tax Revenue Bonds, Build America Taxable Bonds, Subordinate Lien Series 2010B,
		6.731%, 7/01/43
		Texas – 6.8% (6.4% 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
2,520		Dallas Area Rapid Transit, Texas, Sales Tax Revenue Bonds, Build America Taxable Bonds, Series	No Opt. Call	AA+	3,378,967
		2009B, 5.999%, 12/01/44
2,000		Dallas Convention Center Hotel Development Corporation, Texas, Hotel Revenue Bonds, Build	No Opt. Call	A–	2,668,720
		America Taxable Bonds, Series 09B, 7.088%, 1/01/42
1,000		Houston, Texas, General Obligation Bonds, Public Improvement, Build America Bond Series 2010B,	3/20 at 100.00	AA	1,096,900
		6.319%, 3/01/30
2,500		North Texas Tollway Authority, System Revenue Bonds, Taxable Build America Bonds, Series	2/20 at 100.00	Baa2	2,869,875
		2010-B2, 8.910%, 2/01/30
9,020		Total Texas			11,086,452
		Virginia – 3.1% (3.0% of Total Investments)
1,110		Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Second Senior Lien	No Opt. Call	BBB+	1,622,243
		Revenue Bonds, Build America Bonds, Series 2009D, 7.462%, 10/01/46 – AGC Insured
4,020		Tobacco Settlement Financing Corporation of Virginia, Tobacco Settlement Asset Backed Bonds,	9/17 at 100.00	B–	3,521,198
		Refunding Senior Lien Series 2007A, 6.706%, 6/01/46
5,130		Total Virginia			5,143,441
		Washington – 2.3% (2.2% of Total Investments)
2,935		Washington State Convention Center Public Facilities District, Lodging Tax Revenue Bonds,	No Opt. Call	Aa3	3,811,068
		Build America Taxable Bond Series 2010B, 6.790%, 7/01/40
		West Virginia – 1.3% (1.3% of Total Investments)
2,270		Tobacco Settlement Finance Authority, West Virginia, Tobacco Settlement Asset-Backed Bonds,	6/25 at 100.00	B2	2,196,429
		Taxable Turbo Series 2007A, 7.467%, 6/01/47
$ 124,105		Total Municipal Bonds (cost $129,362,361)			170,688,759

 

Principal
Amount (000)		Description (1)	Coupon	Maturity	Ratings (3)	Value
		CORPORATE BONDS – 0.8% (0.8% of Total Investments)
		Diversified Consumer Services – 0.8% (0.8% of Total Investments)
$ 1,300		BCOM Investment Partners LLC, Taxable Notes, Burrell College of Osteopathic Medicine,	7.500%	9/01/45	N/R	$ 1,323,050
		Series 2015, 144A
$ 1,300		Total Corporate Bonds (cost $1,300,000)				1,323,050
		Total Long-Term Investments (cost $130,662,361)				172,011,809
Principal
Amount (000)		Description (1)	Coupon	Maturity		Value
		SHORT-TERM INVESTMENTS – 0.8% (0.7% of Total Investments)
		REPURCHASE AGREEMENTS – 0.8% (0.7% of Total Investments)
$ 1,237		Repurchase Agreement with Fixed Income Clearing Corporation, dated 6/30/17, repurchase	0.120%	7/03/17		$ 1,237,394
		price $1,237,406, collateralized by $1,290,000 U.S. Treasury Notes, 2.000%, due 11/15/26
		value $1,264,805
		Total Short-Term Investments (cost $1,237,394)				1,237,394
		Total Investments (cost $131,899,755) – 105.6%				173,249,203
		Borrowings – (7.3)% (6), (7)				(12,000,000)
		Floating Rate Obligations – (3.3)%				(5,390,000)
		Other Assets Less Liabilities – 5.0% (8)				8,259,420
		Net Assets Applicable to Common Shares – 100%				$ 164,118,623

 

Investment in Derivatives as of June 30, 2017
Interest Rate Swaps (OTC Uncleared)
		Fund	Floating		Fixed Rate		Optional			Unrealized
	Notional	Pay/Receive	Rate	Fixed Rate	Payment	Effective	Termination	Termination		Appreciation
Counterparty	Amount	Floating Rate	Index	(Annualized)	Frequency	Date (9)	Date	Date	Value	(Depreciation)
Barclays			1-Month USD-
Bank PLC	$29,500,000	Receive	LIBOR-ICE	1.655%	Monthly	7/03/17	6/01/18	6/01/20	$(112,690)	$(659,690)
Interest Rate Swaps (OTC Cleared)
									Variation
		Fund	Floating		Fixed Rate		Optional		Margin	Unrealized
	Notional	Pay/Receive	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.*	$26,000,000	Receive	LIBOR-ICE	2.394%	Semi-Annually	4/27/18	N/A	4/27/26	$79,135	$(174,917)
Citigroup Global			3-Month USD-
Markets Inc.*	15,500,000	Receive	LIBOR-ICE	2.769	Semi-Annually	1/10/18	N/A	1/10/40	87,411	(596,701)
Citigroup Global			3-Month USD-
Markets Inc.*	11,900,000	Receive	LIBOR-ICE	1.731	Semi-Annually	8/11/17	N/A	8/11/46	62,903	2,047,190
Citigroup Global			3-Month USD-
Markets Inc.*	9,500,000	Receive	LIBOR-ICE	1.775	Semi-Annually	8/25/17	7/06/26 (10)	8/25/46	50,558	1,547,995
	$62,900,000								$280,007	$2,823,567

* 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	$ —	$170,688,759	$ —	$170,688,759
Corporate Bonds	—	1,323,050	—	1,323,050
Short-Term Investments:
Repurchase Agreements	—	1,237,394	—	1,237,394
Investments in Derivatives:
Interest Rate Swaps*	—	2,163,877	—	2,163,877
Total	$ —	$175,413,080	$ —	$175,413,080

* 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 invesments in derivatives) was $126,929,275.

Gross unrealized appreciation and gross unrealized depreciation of investments (excluding investments in derivatives) as of June 30, 2017, were as follows:

Gross unrealized:
Appreciation	$41,497,054
Depreciation	(568,987)
Net unrealized appreciation (depreciation) of investments	$40,928,067

 

(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 6.9%.
(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 Opportunity Fund