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INVESTMENT ADVISER NAME CHANGE

Effective January 1, 2011, Nuveen Asset Management, the Funds’ investment adviser, changed its name to Nuveen Fund Advisors, Inc. (“Nuveen Fund Advisors”). Concurrently, Nuveen Fund Advisors formed a wholly-owned subsidiary, Nuveen Asset Management, LLC, to house its portfolio management capabilities.

NUVEEN INVESTMENTS COMPLETES STRATEGIC COMBINATION WITH FAF ADVISORS

On December 31, 2010, Nuveen Investments completed the strategic combination between Nuveen Asset Management, LLC, the largest investment affiliate of Nuveen Investments, and FAF Advisors. As part of this transaction, U.S. Bancorp – the parent of FAF Advisors – received cash consideration and a 9.5% stake in Nuveen Investments in exchange for the long term investment business of FAF Advisors, including investment management responsibilities for the non-money market mutual funds of the First American Funds family.

The approximately $27 billion of mutual fund and institutional assets managed by FAF Advisors, along with the investment professionals managing these assets and other key personnel, have become part of Nuveen Asset Management, LLC. With these additions to Nuveen Asset Management, LLC, this affiliate now manages more than $100 billion of assets across a broad range of strategies from municipal and taxable fixed income to traditional and specialized equity investments.

This combination does not affect the investment objectives or strategies of the Funds in this report. Over time, Nuveen Investments expects that the combination will provide even more ways to meet the needs of investors who work with financial advisors and consultants by enhancing the multi-boutique model of Nuveen Investments, which also includes highly respected investment teams at HydePark, NWQ Investment Management, Santa Barbara Asset Management, Symphony Asset Management, Tradewinds Global Investors and Winslow Capital. Nuveen Investments managed approximately $206 billion of assets as of March 31, 2011.

Table of Contents


Chairman’s Letter to Shareholders	4
Portfolio Manager’s Comments	5
Dividend and Share Price Information	10
Performance Overviews	11
Report of Independent Registered Public Accounting Firm	13
Portfolios of Investments	14
Statement of Assets and Liabilities	25
Statement of Operations	26
Statement of Changes in Net Assets	27
Statement of Cash Flows	28
Financial Highlights	29
Notes to Financial Statements	32
Board Members & Officers	41
Annual Investment Management Agreement Approval Process	46
Board Approval of Sub-Advisory Arrangements	58
Reinvest Automatically, Easily and Conveniently	59
Glossary of Terms Used in this Report	61
Other Useful Information	63

Chairman’s

Letter to Shareholders

Dear Shareholders,

In 2010, the global economy recorded another year of recovery from the financial and economic crises of 2008, but many of the factors that caused the downturn still weigh on the prospects for continued improvement. In the U.S., ongoing weakness in housing values has put pressure on homeowners and mortgage lenders. Similarly, the strong earnings recovery for corporations and banks is only slowly being translated into increased hiring or more active lending. Globally, deleveraging by private and public borrowers has inhibited economic growth and that process is far from complete.

Encouragingly, constructive actions are being taken by governments around the world to deal with economic issues. In the U.S., the recent passage of a stimulatory tax bill relieved some of the pressure on the Federal Reserve to promote economic expansion through quantitative easing and offers the promise of sustained economic growth. A number of European governments are undertaking programs that could significantly reduce their budget deficits. Governments across the emerging markets are implementing various steps to deal with global capital flows without undermining international trade and investment.

The success of these government actions could determine whether 2011 brings further economic recovery and financial market progress. One risk associated with the extraordinary efforts to strengthen U.S. economic growth is that the debt of the U.S. government will continue to grow to unprecedented levels. Another risk is that over time there could be inflationary pressures on asset values in the U.S. and abroad, because what happens in the U.S. impacts the rest of the world economy. Also, these various actions are being taken in a setting of heightened global economic uncertainty, primarily about the supplies of energy and other critical commodities. In this challenging environment, your Nuveen investment team continues to seek sustainable investment opportunities and to remain alert to potential risks in a recovery still facing many headwinds. On your behalf, we monitor their activities to assure they maintain their investment disciplines.

As you will note elsewhere in this report, on December 31, 2010, Nuveen Investments completed a strategic combination with FAF Advisors, Inc., the manager of the First American Funds. The combination adds highly respected and distinct investment teams to meet the needs of investors and their advisors and is designed to benefit all fund shareholders by creating a fund organization with the potential for further economies of scale and the ability to draw from even greater talent and expertise to meet those investor needs.

As of the end of April, 2011, Nuveen Investments had completed the refinancing of all of the Auction Rate Preferred Securities issued by its taxable closed-end funds and 89% of the MuniPreferred shares issued by its tax-exempt closed-end funds. Please consult the Nuveen Investments web site, www.Nuveen.com, for the current status of this important refinancing program.

As always, I encourage you to contact your financial consultant if you have any questions about your investment in a Nuveen Fund. On behalf of the other members of your Fund Board, we look forward to continuing to earn your trust in the months and years ahead.

Sincerely,

Robert P. Bremner

Chairman of the Board

May 19, 2011

4 Nuveen Investments

Portfolio Manager’s Comments

Nuveen Build America Bond Fund (NBB)

Nuveen Build America Bond Opportunity Fund (NBD)

Portfolio manager Daniel Close discusses U.S. economic and municipal market conditions, key investment strategies and the performance of the Nuveen Build America Bond Fund (NBB) and the Nuveen Build America Bond Opportunity Fund (NBD). Dan, who joined Nuveen in 2000, has managed NBB since its inception in April 2010 and NBD since its inception in November 2010.

What factors affected the U.S. economy and municipal market during the reporting period ended March 31, 2011?

During this period, the U.S. economy demonstrated some signs of improvement, supported by the efforts of both the Federal Reserve (Fed) and the federal government. For its part, the Fed continued to hold the benchmark fed funds rate in a target range of zero to 0.25% since cutting it to this record low level in December 2008. At its April 2011 meeting (following the end of this reporting period), the central bank renewed its commitment to keeping the fed funds rate at “exceptionally low levels” for an “extended period.” The Fed also left unchanged its second round of quantitative easing, which calls for purchasing $600 billion in longer-term U.S. Treasury bonds by June 30, 2011. The goal of this plan is to lower long-term interest rates and thereby stimulate economic activity and create jobs. The federal government continued to focus on implementing the economic stimulus package passed in early 2009 aimed at providing job creation, tax relief, fiscal assistance to state and local governments and expansion of unemployment benefits and other federal social welfare programs.

In the first quarter of 2011, the U.S. economy, as measured by the U.S. gross domestic product (GDP), grew at an annualized rate of 1.8%, marking the seventh consecutive quarter of positive growth. The employment picture continued to improve gradually, with the national jobless rate registering 8.8% in March 2011, its lowest level since March 2009 and down from 9.7% a year earlier. While the Fed’s longer-term inflation expectations remained stable, inflation posted its largest twelve month gain since December 2009, as the Consumer Price Index (CPI) rose 2.7% year-over-year as of March 2011, driven mainly by increased prices for energy. The core CPI (which excludes food and energy) increased 1.2% over this period, staying within the Fed’s unofficial objective of 2.0% or lower for this measure. The housing market continued to be a weak spot in the economy. For the twelve months ended February 2011 (most recent data available at the time this report was prepared), the average home price in the Standard & Poor’s (S&P) Case-Shiller index of 20 major metropolitan areas lost 3.3%, with 10 of the 20 metropolitan areas hitting their lowest levels since housing prices peaked in 2006.

Certain statements in this report are forward-looking statements. Discussions of specific investments are for illustration only and are not intended as recommendations of individual investments. The forward-looking statements and other views expressed herein are those of the portfolio manager as of the date of this report. Actual future results or occurrences may differ significantly from those anticipated in any forward-looking statements and the views expressed herein are subject to change at any time, due to numerous market and other factors. The Funds disclaim any obligation to update publicly or revise any forward-looking statements or views expressed herein.

Any reference to credit ratings for portfolio holdings denotes the highest rating assigned by a Nationally Recognized Statistical Rating Organization (NRSRO) such as Standard & Poor’s (S&P), Moody’s or Fitch. AAA, AA, A and BBB ratings are investment grade; BB, B, CCC, CC, C and D ratings are below investment grade. Holdings and ratings may change over time.

Nuveen Investments 5

Looking at the overall municipal market, bond prices generally rose during this period, as the combination of strong demand and tight supply of new tax-exempt issuance created favorable market conditions. After rallying strongly over most of the period, the municipal market suffered a reversal in mid-November 2010, due largely to investor concerns about inflation, the federal deficit and the deficit’s impact on demand for U.S. Treasuries. Adding to this situation was media coverage of the strained finances of many state and local governments, which often failed to differentiate between gaps in these governments’ operating budgets and their ability to meet their debt service obligation. Toward the end of this period, we saw the environment in the municipal market improve, as crossover buyers—including hedge funds and life insurance companies—were attracted by municipal bond prices and tax-exempt yields, resulting in decreased outflows, declining yields and rising valuations.

What key strategies were used to manage NBB and NBD during this period?

The inception date for NBB was April 27, 2010, and for NBD it was November 23, 2010. Both NBB and NBD are designed to invest primarily in Build America Bonds (BABs) and other taxable municipal bonds. Bonds issued under the Build America Bond program, which ended December 31, 2010, offered municipal issuers a federal subsidy equal to 35% of a bond’s interest payments, often providing issuers with a lower-cost alternative to traditional tax-exempt debt.

The primary investment objective of these two Funds is to provide current income through investments in taxable municipal securities. Their secondary objective is to seek enhanced portfolio value and total return. The Funds offer strategic portfolio diversification opportunities for traditional municipal bond investors, while broadening participation to investors that have not traditionally purchased municipal bonds, including public and corporate retirement plans, endowments, life insurance companies, and sovereign wealth funds. For these investors, these Funds can offer investment-grade municipal credit, current income, and strong call protection.

Both NBB and NBD completed their initial investment process during this reporting period. Between April 2010, when NBB was introduced, and the end of the BAB program in December 2010, BAB issuance totaled $90.5 billion. Issuance was particularly heavy during the fourth quarter of 2010, as issuers uncertain about the extension of the BAB program sought to take advantage of the program’s terms before it expired. During this period, $44.1 billion in BABs were issued, accounting for 33% of new bonds issued in the municipal market. Within the 21 months between the first BAB issue in April 2009 and the last BAB issue in December 2010, $181.4 billion of Build America Bonds were issued. The secondary market for BABs continues to be active.

The ample supply of BAB issuance during the invest-up enabled us to purchase a good balance of BABs in both the primary (new issue) and secondary markets. Under the provisions of the Build America Bond program, only governmental entities could issue BABs. Issuance was heaviest in the general purpose/public improvement, education, transportation, and utilities sectors. Nonprofit 501(c)(3) organizations such as hospitals generally did not qualify as BABs issuers, limiting the availability of these bonds. Bonds with proceeds

6 Nuveen Investments

earmarked for refundings, working capital and private activities also were not covered by the BAB program. By the end of the program, all states except Montana and Rhode Island had issued BABs, with California, New York, Texas, Illinois and Ohio at the forefront in terms of issuance, followed by New Jersey, Washington, Pennsylvania, Florida and Georgia. This enabled us to add geographic diversity to the Funds. The majority of our purchases were at the long end of the yield curve.

During NBB’s invest-up period, we purchased a good mix of benchmark and non-benchmark BAB issues. Benchmark BAB issues are bonds whose cusip is over $250 million in size and therefore eligible for inclusion in the Barclays Capital Build America Bond (BAB) Index. Non-benchmark BAB issues are smaller, generally lower-profile issuers that can offer the same credit quality as benchmark issues, but may require a more detailed credit review before purchase. As part of its investment strategies, NBB uses an integrated leverage and hedging strategy to seek to enhance current income and total return, while working to maintain a level of interest rate risk similar to that of the Barclays Capital BAB Index. To implement leverage, NBB uses both bank borrowings and inverse floating rate securities. Duration shortening hedges, which can include shorting U.S. Treasury futures or long LIBOR swaps, were used to reduce the leverage-adjusted portfolio duration to a level close to that of the index. NBB’s integrated leverage strategy is discussed further on page nine.

After the completion of NBB’s invest-up period, we focused primarily on improving the Fund’s liquidity profile by purchasing additional benchmark, or index-eligible, BAB issues. These bonds, which were in good supply in the primary market during the fourth quarter of 2010, are currently in greater demand than non-benchmark issues and should be more liquid on a going-forward basis. Purchases were funded with the proceeds from sales of non-benchmark issues. Following the end of new issue BABs, we continued to sell non-benchmark and other non-BAB bonds and purchase BABs in the secondary market, focusing on adding benchmark issues where we had favorable credit opinions while these bonds were still readily available in the market.

During the last half of this period, we also shifted more of NBB’s leverage from bank borrowings to inverse floating rate securities. In our opinion, these securities currently offer a less expensive form of financing. NBB’s leverage, originally implemented as approximately 65% through borrowings and 35% through inverse floaters1, was approximately 80% funded by inverse floaters as of the end of this period.

In NBD, the heavy supply of new BABs during the last part of 2010 enabled us to complete the invest-up of this Fund primarily with purchases of BABs, with an emphasis on benchmark issues, and also to diversify NBD in terms of sector and credit. Shortly after the invest-up period began, we bought a number of long U.S. Treasury bonds to help bring NBD’s duration profile in line with that of the Fund’s benchmark, the Barclays Capital BAB Index. Toward the end of this period, we sold most of these non-BAB holdings and reinvested the proceeds in BABs. NBD uses a leverage strategy similar to that used in NBB using inverse floating rate securities only. Following the end of the new issue calendar, we continued to make small trades in the secondary market and worked to increase NBD’s liquidity. In early 2011, following a decline in the tax-exempt municipal market, both NBB and NBD purchased tax-exempt municipal bonds at attractive prices.

Inverse floating rate securities, also known as inverse floaters, are created by depositing a municipal bond, typically with a fixed interest rate, into a special purpose trust created by a broker-dealer. This trust, in turn, (a) issues floating rate certificates typically paying short-term tax-exempt interest rates to third parties in amounts equal to some fraction of the deposited bond’s par amount or market value, and (b) issues an inverse floating rate certificate (sometimes referred to as an “inverse floater”) to an investor (such as a Fund) interested in gaining investment exposure to a long-term municipal bond. The income received by the holder of the inverse floater varies inversely with the short-term rate paid to the floating rate certificates’ holders, and in most circumstances the holder of the inverse floater bears substantially all of the underlying bond’s downside investment risk. The holder of the inverse floater typically also benefits disproportionately from any potential appreciation of the underlying bond’s value. Hence, an inverse floater essentially represents an investment in the underlying bond on a leveraged basis.

Nuveen Investments 7

As the valuations on these bonds approached more appropriate levels near the end of this period, we sold these non-BABs at higher prices, thus benefiting the Funds.

During the period, the Funds also entered into interest rate and forward interest rate swap contracts to reduce the duration of each Fund’s portfolio, as well as to partially fix its interest cost of leverage.

Because the BAB program was not renewed at the end of December 2010, shareholders should note that both NBB and NBD have contingent term provisions stating that if there are no new issuances of BABs or similarly U.S. Treasury-subsidized taxable municipal bonds for any 24-month period ending on or before December 31, 2014, NBB and NBD will terminate on or around June 30, 2020, and December 31, 2020, respectively.

How did these Funds perform over this period?

Results for NBB and NBD, as well as relevant index information, are presented in the accompanying table.


Cumulative Total Returns on Net Asset Value
For periods ended 3/31/11

Since Inception	4/27/10	11/23/10
NBB*	4.90%	N/A
NBD**	N/A	3.73%
Barclays Capital Build America Bond (BAB) Index2	2.88%*	1.27%**

For the period between their respective inceptions and March 31, 2011, the cumulative returns on net asset value (NAV) for NBB and NBD exceeded the returns for the Barclays Capital Build America Bond (BAB) Index, which reflect the same time periods.

Key management factors that influenced the Funds’ returns during this period included duration and yield curve positioning, credit exposure and sector allocation. In addition, individual security selection was positive for both NBB and NBD, as heavy issuance of BABs during the fourth quarter of 2010 gave us access to a robust array of bonds with attractive features from which to choose. The Funds’ use of leverage was an important factor affecting the Funds’ performance for this period. The impact of leverage is discussed in more detail on page nine.

During this period, bonds with intermediate and longer maturities generally performed well. Overall, duration was a positive contributor to NBB’s performance and a negative factor in NBD. This difference can be attributed to NBB’s overweighting of an intermediate segment of the yield curve that performed particularly well during this period.

Both NBB and NBD were similarly weighted among the credit quality sectors, with their largest allocation in bonds rated AA, followed by A, AAA, BBB and non-rated bonds. On the whole, this credit rating exposure was negative for performance during this period.

The overall impact of sector exposure was positive in both NBB and NBD. The Funds’ sector allocations were well diversified, with the heaviest weightings in limited and general tax obligation bonds, utilities, transportation and water and sewer credits.

*	The returns shown for NBB and the index represent the period from April 27, 2010 (NBB’s inception date), through March 31, 2011.

**	The returns shown for NBD and the index represent the period from November 23, 2010 (NBD’s inception date), through March 31, 2011.

	Past performance is not predictive of future results. Current performance may be higher or lower than the data shown. Returns do not reflect the deduction of taxes that shareholders may have to pay on Fund distributions or upon the sale of Fund shares.

	For additional information, see the Performance Overview pages for NBB and NBD in this report.

2	The Barclays Capital Build America Bond (BAB) Index is an unleveraged index that comprises all direct pay Build America Bonds that are SEC-regulated, taxable, dollar-denominated, and have at least one year to final maturity, at least $250 million par amount outstanding, and are determined to be investment grade by Barclays Capital. This index does not reflect any initial or ongoing expenses and is not available for direct investment.

8 Nuveen Investments

IMPACT OF THE FUNDS’ LEVERAGE STRATEGIES ON PERFORMANCE

One important factor impacting the returns of these Funds relative to the comparative index was the Funds’ use of leverage. These Funds use leverage because their managers believe that, over time, leveraging provides opportunities for additional income and total return for shareholders. However, use of leverage also can expose shareholders to additional volatility. For example, as the prices of securities held by a Fund decline, the negative impact of these valuation changes on net asset value and total return is magnified by the use of leverage. Conversely, leverage may enhance returns during periods when the prices of securities held by the Funds’ generally are rising. Leverage made a positive contribution to the Funds’ performance over the reporting period.

Nuveen Investments 9

Dividend and Share Price Information

Introduced in April 2010, NBB declared its initial monthly distribution in June 2010 and maintained a stable monthly dividend throughout the remainder of the reporting period ended March 31, 2011. NBD, which was introduced in November 2010, declared its initial monthly dividend distribution in January 2011 and maintained a stable monthly dividend over the remainder of the period.

NBB and NBD seek to pay stable dividends at rates that reflect the Funds’ past results and projected future performance. During certain periods, the Funds may pay dividends at a rate that may be more or less than the amount of net investment income actually earned by the Funds during the period. If a Fund has cumulatively earned more than it has paid in dividends, it holds the excess in reserve as undistributed net investment income (UNII) as part of the Fund’s NAV. Conversely, if a Fund has cumulatively paid dividends in excess of its earnings, the excess constitutes negative UNII that is likewise reflected in the Fund’s NAV. The Funds will, over time, pay all of their net investment income as dividends to shareholders. As of March 31, 2011, both NBB and NBD had positive UNII balances for both tax and financial reporting purposes.

SHARE REPURCHASES AND PRICE INFORMATION

Since the inception of NBB’s repurchase program, NBB has not repurchased any of its outstanding shares. As of March 31, 2011, NBD is not authorized to repurchase its outstanding shares.

As of March 31, 2011, and during the reporting period, the Funds’ share prices were trading at (+) premiums/(-) discounts to their NAVs as shown in the accompanying table.

		Average
	3/31/11	(+) Premium/(-) Discount
Fund	(-) Discount	Since Inception
NBB	(-)4.24%	(+)0.29%
NBD	(-)4.12%	(-)0.50%

10 Nuveen Investments


NBB	Nuveen Build America Bond
Performance	Fund
OVERVIEW
	as of March 31, 2011


Fund Snapshot
Share Price		$18.06
Net Asset Value (NAV)		$18.86
Premium/(Discount) to NAV		-4.24%
Market Yield		7.77%
Net Assets ($000)		$499,020

Cumulative Total Return
(Inception 4/27/10)
	On Share Price	On NAV
Since Inception	-3.99%	4.90%

States2
(as a % of total municipal bonds)
California		18.5%
New York		10.7%
Illinois		10.4%
Texas		5.6%
Ohio		4.8%
Georgia		4.3%
Washington		4.2%
Louisiana		3.6%
Michigan		3.4%
Indiana		3.2%
Florida		3.1%
Tennessee		2.9%
Oregon		2.7%
Virgin Islands		2.4%
Arizona		2.3%
New Jersey		2.3%
Virginia		2.2%
Other		13.4%

Portfolio Composition2,3
(as a % of total investments)
Tax Obligation/Limited		24.0%
Tax Obligation/General		23.0%
Utilities		21.0%
Transportation		13.1%
Water and Sewer		12.7%
Education and Civic Organizations		4.9%
Short-Term Investments		0.1%
Other		1.2%

Build America Bond Allocation2
(as a % of total municipal bonds)
Build America Bonds		93.7%
Non-Build America Bonds		6.3%

	Refer to the Glossary of Terms Used in this Report for further definition of the terms used within this Fund’s Performance Overview page.
1	Ratings shown are the highest of Standard & Poor’s Group, Moody’s Investor Service, Inc. or Fitch, Inc. AAA includes bonds with an implied AAA rating since they are backed by U.S. Government or agency securities. AAA, AA, A and BBB ratings are investment grade; BB, B, CCC, CC, C and D ratings are below-investment grade. Holdings designated N/R are not rated by any of these national rating agencies.
2	Holdings are subject to change.
3	Excluding investments in derivatives.

Nuveen Investments 11


NBD	Nuveen Build
	America Bond
Performance	Opportunity Fund
OVERVIEW
	as of March 31, 2011


Fund Snapshot
Share Price		$18.63
Net Asset Value (NAV)		$19.43
Premium/(Discount) to NAV		-4.12%
Market Yield		8.12%
Net Assets ($000)		$139,972

Cumulative Total Return
(Inception 11/23/10)
	On Share Price	On NAV
Since Inception	-4.96%	3.73%

States2,3
(as a % of total investments)
Illinois		12.7%
California		12.5%
New York		9.9%
Texas		7.6%
South Carolina		6.9%
New Jersey		5.4%
Michigan		5.2%
Colorado		4.3%
Pennsylvania		4.0%
Ohio		3.9%
Georgia		3.3%
Missouri		2.7%
Nevada		2.7%
District of Columbia		2.7%
Kentucky		2.1%
Other		14.1%

Portfolio Composition2,3
(as a % of total investments)
Tax Obligation/Limited		31.1%
Utilities		17.7%
Tax Obligation/General		16.3%
Water and Sewer		13.2%
Transportation		10.8%
Education and Civic Organizations		6.4%
Other		4.5%

Build America Bond Allocation2,3
(as a % of total investments)
Build America Bonds		96.5%
Non-Build America Bonds		3.5%

	Refer to the Glossary of Terms Used in this Report for further definition of the terms used within this Fund’s Performance Overview page.
1	Ratings shown are the highest of Standard & Poor’s Group, Moody’s Investor Service, Inc. or Fitch, Inc. AAA includes bonds with an implied AAA rating since they are backed by U.S. Government or agency securities. AAA, AA, A and BBB ratings are investment grade; BB, B, CCC, CC, C and D ratings are below-investment grade. Holdings designated N/R are not rated by any of these national rating agencies.
2	Holdings are subject to change.
3	Excluding investments in derivatives.

12 Nuveen Investments

Report of Independent

Registered Public Accounting Firm

The Board of Trustees and Shareholders

Nuveen Build America Bond Fund

Nuveen Build America Bond Opportunity Fund

We have audited the accompanying statements of assets and liabilities, including the portfolios of investments, of Nuveen Build America Bond Fund and Nuveen Build America Bond Opportunity Fund (the “Funds”) as of March 31, 2011, and the related statements of operations, changes in net assets, cash flows (Nuveen Build America Bond Fund only), and the financial highlights for the periods indicated therein. These financial statements and financial highlights are the responsibility of the Funds’ management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Funds’ internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Funds’ internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of March 31, 2011, by correspondence with the custodian and brokers or by other appropriate auditing procedures where replies from brokers were not received. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial positions of Nuveen Build America Bond Fund and Nuveen Build America Bond Opportunity Fund at March 31, 2011, and the results of their operations, changes in their net assets, their cash flows (Nuveen Build American Bond Fund only), and the financial highlights for the periods indicated therein in conformity with U.S. generally accepted accounting principles.

Chicago, Illinois

May 25, 2011

Nuveen Investments 13


	Nuveen Build America Bond Fund
NBB	Portfolio of Investments
	March 31, 2011


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	Municipal Bonds
	Arizona – 2.5% (2.3% of Total Investments)
$ 3,000	Arizona Board of Regents, University of Arizona, System Revenue Bonds, Build America Taxable	8/20 at 100.00	AA–	$ 3,006,540
	Bonds, Series 2010A, 6.423%, 8/01/35
10,000	Mesa, Arizona, Utility System Revenue Bonds, Series 2010, 6.100%, 7/01/34	No Opt. Call	Aa2	9,580,200
13,000	Total Arizona			12,586,740
	California – 20.3% (18.5% of Total Investments)
500	California Infrastructure Economic Development Bond Bank, Revenue Bonds, University of	No Opt. Call	Aa2	498,620
	California San Francisco Neurosciences Building, Build America Taxable Bond Series 2010B,
	6.486%, 5/15/49
3,000	California State Public Works Board, Lease Revenue Bonds, Various Capital Projects, Build	No Opt. Call	A2	3,184,410
	America Taxable Bond Series 2009G-2, 8.361%, 10/01/34
4,000	California State Public Works Board, Lease Revenue Bonds, Various Capital Projects, Build	3/20 at 100.00	A2	3,975,560
	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	6,920,550
	2010B, 6.484%, 11/01/41
4,500	California State, General Obligation Bonds, Various Purpose Build America Taxable Bond Series	3/20 at 100.00	A1	4,845,735
	2010, 7.950%, 3/01/36
5,500	City and County of San Francisco Redevelopment Financing Authority, California, Taxable Tax	No Opt. Call	A1	5,663,680
	Allocation Revenue Bonds, San Francisco Redevelopment Projects, Series 2009F, 8.406%, 8/01/39
5,000	Hayward Unified School District, Alameda County, California, General Obligation Bonds, Build	8/20 at 100.00	AA+	5,046,250
	America Taxable Bonds, Series 2010B, 7.350%, 8/01/43 – AGM Insured
950	Los Alamitos Unified School District, Orange County, California, General Obligation Bonds,	No Opt. Call	Aa2	900,268
	School Facilities Improvement, Build America Taxable Bond Series 2010C, 6.210%, 8/01/35
15,000	Los Angeles Community College District, California, General Obligation Bonds, Build America	No Opt. Call	Aa1	15,716,250
	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	10,477,500
	Bonds, Series 2010, 6.600%, 8/01/42 (UB) (4)
11,000	Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Multiple	No Opt. Call	A+	10,843,580
	Capital Projects I, Build America Taxable Bond Series 2010B, 7.618%, 8/01/40
2,000	Los Angeles Department of Water and Power, California, Water System Revenue Bonds, Tender	No Opt. Call	Aa1	2,513,100
	Option Bond Trust T0003, 29.995%, 7/01/42 (IF) (4)
9,520	Napa Valley Unified School District, Napa County, California, General Obligation Bonds, Build	No Opt. Call	Aa2	9,558,651
	America Taxable Bond Series 2010B, 6.507%, 8/01/43
3,000	Oakland Redevelopment Agency, California, Subordinated Housing Set Aside Revenue Bonds,	No Opt. Call	A	2,946,720
	Federally Taxable Series 2011A-T, 7.500%, 9/01/19
5,000	Orange County Sanitation District, California, Wastewater Revenue Bonds, Build America Taxable	No Opt. Call	AAA	4,719,700
	Bond Series 2010A, 5.580%, 2/01/40
2,355	San Bernardino Community College District, California, General Obligation Bonds, Election of	No Opt. Call	AA–	2,491,307
	2008, Build America Taxable Bond Series 2009C, 7.630%, 8/01/44
4,000	San Francisco City and County, California, Certificates of Participation, 525 Golden Gate	No Opt. Call	AA–	2,783,000
	Avenue, San Francisco Public Utilities Commission Office Project, Tender Option Bond Trust
	B001, 29.243%, 11/01/30 (IF)
1,000	Santa Barbara County, California, Certificates of Participation, Recovery Zone Economic	No Opt. Call	AA+	973,600
	Development Taxable Bonds, Series 2010A-2, 6.250%, 12/01/40
	Stanton Redevelopment Agency, California, Consolidated Project Tax Allocation Bonds,
	Series 2011A:
275	6.500%, 12/01/17	No Opt. Call	A–	272,440
295	6.750%, 12/01/18	No Opt. Call	A–	289,873
2,500	Walnut Energy Center Authority, California, Electric Revenue Bonds, Turlock Irrigation	No Opt. Call	A+	2,465,425
	District, Build America Taxable Bonds, Series 2010B, 6.230%, 1/01/29
4,000	West Kern Water District, California, Certificates of Participation, Land Acquisition Project,	No Opt. Call	AA–	4,044,680
	Build America Bonds, Series 10B, 6.720%, 6/01/40
100,395	Total California			101,130,899

14 Nuveen Investments


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	Colorado – 1.9% (1.8% of Total Investments)
$ 1,000	East Cherry Creek Valley Water and Sanitation District, Arapahoe County, Colorado, Water	11/20 at 100.00	A+	$ 897,330
	Revenue Bonds, Build America Taxable Bond Series 2010B, 5.820%, 11/15/40
3,000	Mesa State College, Colorado, Auxiliary Facilities Enterprise Revenue Bonds, Build America	No Opt. Call	Aa2	3,052,080
	Taxable Bond Series 2010B, 6.746%, 5/15/42
1,000	Metropolitan State College of Denver, Colorado, Institutional Enterprise Revenue Bonds,	No Opt. Call	Aa2	952,130
	Federally Taxable Build America Bonds, Recovery Zone Economic Development Project, Series 2010,
	6.000%, 12/01/40
5,000	St. Vrain Valley School District RE-1J, Boulder, Larimer and Weld Counties, Colorado, General	12/20 at 100.00	Aa2	4,776,050
	Obligation Bonds, Build America Taxable Bond Series 2010B, 5.790%, 12/15/33
10,000	Total Colorado			9,677,590
	Connecticut – 1.3% (1.2% of Total Investments)
6,000	Harbor Point Infrastructure Improvement District, Connecticut, Special Obligation Revenue	4/20 at 100.00	N/R	6,417,720
	Bonds, Harbor Point Project, Federally Taxable – Issuer Subsidy – Recovery Zone Economic
	Development Bond Series 2010B, 12.500%, 4/01/39
	Florida – 3.4% (3.1% of Total Investments)
5,000	Florida Governmental Utilities Authority, North Fort Myers Utility Revenue Bonds, Federally	10/20 at 100.00	A2	5,091,200
	Taxable Build America Bonds, Series 2010B, 7.084%, 10/01/40
6,195	Florida State Board of Education, Public Education Capital Outlay Bonds, Build America Taxable	6/19 at 100.00	AAA	6,114,837
	Bonds, Series 2010G, 5.750%, 6/01/35
500	Lake City, Florida, Utility System Revenue Bonds, Build America Taxable Bonds Series 2010B,	7/20 at 100.00	AA+	497,765
	6.175%, 7/01/35 – AGC Insured
4,975	Orlando Community Redevelopment Agency, Florida, Tax Increment Revenue Bonds, Downtown	9/20 at 100.00	A1	5,295,639
	District, Direct Subsidy Build America Table Bond Series 2010B, 7.784%, 9/01/40
16,670	Total Florida			16,999,441
	Georgia – 4.7% (4.3% of Total Investments)
10,000	Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project J Bonds, Taxable Build	No Opt. Call	A+	9,549,300
	America Bonds Series 2010A, 6.637%, 4/01/57
15,000	Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding	No Opt. Call	A–	14,032,800
	Taxable Build America Bonds Series 2010A, 7.055%, 4/01/57
25,000	Total Georgia			23,582,100
	Illinois – 11.4% (10.4% of Total Investments)
5,000	Chicago Transit Authority, Illinois, Sales and Transfer Tax Receipts Revenue Bonds, Pension	No Opt. Call	AA	4,938,400
	Funding Taxable Series 2008A, 6.899%, 12/01/40
10,000	Chicago, Illinois, General Airport Revenue Bonds, O’Hare International Airport, Third Lien,	1/20 at 100.00	A1	9,859,800
	Build America Taxable Bond Series 2010B, 6.845%, 1/01/38
10,000	Chicago, Illinois, Wastewater Transmission Revenue Bonds, Build America Taxable Bond Series	No Opt. Call	Aa3	10,278,100
	2010B, 6.900%, 1/01/40
10,000	Chicago, Illinois, Water Revenue Bonds, Taxable Second Lien Series 2010B, 6.742%, 11/01/40	No Opt. Call	AA–	10,262,100
5,610	Cook County, Illinois, General Obligation Bonds, Build America Taxable Bonds, Series 2010D,	No Opt. Call	AA	5,394,520
	6.229%, 11/15/34
500	Illinois Finance Authority, Revenue Bonds, Illinois Institute of Technology, Refunding Series	4/11 at 100.00	Baa3	436,985
	2006A, 6.100%, 4/01/15
13,875	Illinois State, General Obligation Bonds, Taxable Build America Bonds, Series 2010-3,	No Opt. Call	A+	13,325,689
	6.725%, 4/01/35
2,680	Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Build America Taxable Bonds,	No Opt. Call	AA–	2,601,449
	Senior Lien Series 2009A, 6.184%, 1/01/34
57,665	Total Illinois			57,097,043
	Indiana – 3.5% (3.2% of Total Investments)
	Evansville Redevelopment Authority, Indiana, Lease Rental Revenue Bonds, Build America Taxable
	Bond Series 2010B:
1,250	6.960%, 2/01/34	8/20 at 100.00	Aa3	1,262,638
9,440	7.210%, 2/01/39	8/20 at 100.00	Aa3	9,585,848

Nuveen Investments 15


	Nuveen Build America Bond Fund (continued)
NBB	Portfolio of Investments March 31, 2011


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	Indiana (continued)
$ 5,000	Indiana University, Consolidated Revenue Bonds, Build America Taxable Bonds, Series 2010B,	6/20 at 100.00	Aaa	$ 4,893,700
	5.636%, 6/01/35
1,725	Speedway Redevelopment Authority, Indiana, Lease Rental Revenue Bonds, Federally Taxable Build	No Opt. Call	A+	1,695,917
	America Bonds, Series 2010A, 6.512%, 2/01/35
17,415	Total Indiana			17,438,103
	Kentucky – 1.0% (0.9% of Total Investments)
5,000	Kentucky Municipal Power Agency, Power Supply System Revenue Bonds, Prairie State Project,	9/20 at 100.00	AA+	5,208,250
	Tender Option Bond Trust B002, 28.928%, 9/01/37 – AGM Insured (IF)
	Louisiana – 4.0% (3.6% of Total Investments)
20,000	East Baton Rouge Sewage Commission, Louisiana, Revenue Bonds, Build America Taxable Bonds,	2/20 at 100.00	Aa2	19,961,000
	Series 2010B, 6.087%, 2/01/45
	Massachusetts – 0.5% (0.4% of Total Investments)
2,000	Massachusetts, Transportation Fund Revenue Bonds, Accelerated Bridge Program, Tender Option	No Opt. Call	AAA	2,318,000
	Bond Trust T0004, 25.436%, 6/01/40 (IF) (4)
	Michigan – 3.8% (3.4% of Total Investments)
14,650	Detroit City School District, Wayne County, Michigan, General Obligation Bonds, Build America	No Opt. Call	Aa2	15,335,620
	Taxable Bond Series 2009B, 7.747%, 5/01/39
1,720	Jackson Public Schools, Jackson County, Michigan, General Obligation Bonds, Qualified School	5/20 at 100.00	Aa2	1,722,219
	Construction Bonds – Taxable Direct Payment, Series 2010B, 6.450%, 5/01/27
1,000	Michigan Tobacco Settlement Finance Authority, Tobacco Settlement Asset-Backed Revenue Bonds,	6/22 at 100.00	Baa3	748,140
	Taxable Turbo Series 2006A, 7.309%, 6/01/34
950	Monroe, Michigan, Limited Tax General Obligation Bonds, Taxable Recovery Zone Economic	5/20 at 100.00	A+	971,347
	Development Bonds, Series 2010, 6.650%, 5/01/27
18,320	Total Michigan			18,777,326
	Missouri – 0.4% (0.3% of Total Investments)
1,900	Missouri Joint Municipal Electric Utility Commission, Prairie State Power Project Revenue	1/19 at 100.00	A3	1,866,636
	Bond, Federally Taxable Build America Bonds – Direct Pay, Series 2009A, 6.890%, 1/01/42
	Nebraska – 0.3% (0.3% of Total Investments)
1,670	District Energy Corporation, Nebraska, Facility Revenue Bonds, Build America Taxable Bonds,	7/20 at 100.00	Aa1	1,631,690
	Series 2010B, 5.901%, 7/01/32
	Nevada – 2.3% (2.1% of Total Investments)
6,000	Clark County, Nevada, Airport Revenue Bonds, Senior Lien Series 2009B, 6.881%, 7/01/42	7/19 at 100.00	Aa2	5,999,880
1,315	Las Vegas, Nevada, Certificates of Participation, City Hall Project, Build America Federally	9/19 at 100.00	AA–	1,388,298
	Taxable Bonds, Series 2009B, 7.800%, 9/01/39
4,000	North Las Vegas, Nevada, General Obligation Water and Wastewater Improvement Bonds, Build	No Opt. Call	Aa2	3,991,800
	America Taxable Bonds, Series 2010A, 6.572%, 6/01/40
11,315	Total Nevada			11,379,978
	New Jersey – 2.5% (2.3% of Total Investments)
11,500	New Jersey Turnpike Authority, Revenue Bonds, Build America Taxable Bonds, Series 2010A,	No Opt. Call	A+	12,501,190
	7.102%, 1/01/41
	New York – 11.8% (10.7% of Total Investments)
15,000	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, Build	No Opt. Call	AAA	14,160,450
	America Taxable Bonds, Series 2010D, 5.600%, 3/15/40
10,000	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds,	No Opt. Call	AAA	9,440,300
	Series 2010D, 5.600%, 3/15/40 (UB)
10,000	Long Island Power Authority, New York, Electric System Revenue Bonds, Build America Taxable	No Opt. Call	A–	9,130,600
	Bond Series 2010B, 5.850%, 5/01/41
4,750	Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Build America	No Opt. Call	A	4,450,560
	Taxable Bonds, Series 2009A-1, 5.871%, 11/15/39

16 Nuveen Investments


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	New York (continued)
	New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue
	Bonds, Second Generation Resolution, Build America Taxable Bonds, Series 2010DD:
$ 2,025	5.952%, 6/15/42 (UB)	No Opt. Call	AA+	$ 2,080,809
2,595	5.952%, 6/15/42	No Opt. Call	AA+	2,666,518
1,595	New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue	No Opt. Call	AA+	1,654,733
	Bonds, Second Generation Resolution, Taxable Tender Option Bonds Trust T30001-2,
	26.399%, 6/15/44 (IF)
5,500	New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Build	No Opt. Call	AA–	5,883,790
	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	9,374,500
	America Taxable Bonds, Series 2010G-1, 5.467%, 5/01/40
61,465	Total New York			58,842,260
	Ohio – 5.3% (4.8% of Total Investments)
500	American Municipal Power Inc., Ohio, Combined Hydroelectric Projects Revenue Bonds, Federally	No Opt. Call	A	506,400
	Taxable Build America Bonds, Series 2009B, 6.424%, 2/15/32
10,000	American Municipal Power Inc., Ohio, Combined Hydroelectric Projects Revenue Bonds, Federally	No Opt. Call	A	11,219,500
	Taxable Build America Bonds, Series 2010B, 7.834%, 2/15/41
3,000	Circleville City School District, Pickaway County, Ohio, General Obligation School Facilities	5/20 at 100.00	Aa2	3,072,660
	Construction and Improvement Bonds, Build America Taxable Series 2010C, 6.300%, 11/01/40
	Franklin County Convention Facilities Authority, Ohio, Lease Revenue Anticipation Bonds,
	Federally Taxable Direct Payment Build America Bonds, Series 2010:
570	6.540%, 12/01/36	No Opt. Call	AA	547,388
4,490	6.640%, 12/01/42	No Opt. Call	AA	4,361,317
5,000	Lucas County, Ohio, General Obligation Bonds, Taxable Arena improvement Series 2010,	10/20 at 100.00	Aa2	4,822,300
	6.150%, 10/01/40
1,760	Madison Local School District, Lake & Geauga Counties, Ohio, General Obligation Bonds, Build	9/20 at 100.00	Aa2	1,659,381
	America Taxable Bond Series 2010C, 6.050%, 4/01/42
25,320	Total Ohio			26,188,946
	Oregon – 2.9% (2.7% of Total Investments)
4,000	Oregon Department of Administrative Services, Certificates of Participation, Federally Taxable	5/20 at 100.00	Aa2	3,776,400
	Build America Bonds, Tender Option Bond Trust TN-011, 27.474%, 5/01/35 (IF) (4)
9,950	Warm Springs Reservation Confederated Tribes, Oregon, Tribal Economic Development	No Opt. Call	A3	10,804,904
	Bonds, Hydroelectric Revenue Bonds, Pelton Round Butte Project, Refunding Series 2009A,
	8.250%, 11/01/19
13,950	Total Oregon			14,581,304
	Pennsylvania – 1.4% (1.3% of Total Investments)
3,000	Haverford Township School District, Delaware County, Pennsylvania, General Obligation Bonds,	3/20 at 100.00	AA+	2,937,960
	Federally Taxable Build America Bonds, Series 2010, 6.004%, 3/01/35 – AGC Insured
1,500	New Castle Sanitation Authority, Lawrence County, Pennsylvania, Sewer Revenue Bonds, Build	6/20 at 100.00	AA+	1,506,600
	America Taxable Bonds, Series 2010A, 6.506%, 6/01/41 – AGM Insured
2,800	Uniontown Area School District, Fayette County, Pennsylvania, General Obligation Bonds,	10/20 at 100.00	Aa3	2,781,968
	Federally Taxable Build America Bonds, Series 2010, 6.261%, 10/01/39
7,300	Total Pennsylvania			7,226,528
	South Carolina – 2.0% (1.8% of Total Investments)
205	South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper,	No Opt. Call	Aa2	281,106
	Federally Taxable Build America Tender Option Bond Trust T30002, 29.430%, 1/01/50 (IF)
8,985	South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper,	No Opt. Call	Aa2	9,652,316
	Series 2010A, 6.454%, 1/01/50 (UB)
9,190	Total South Carolina			9,933,422
	Tennessee – 3.2% (2.9% of Total Investments)
15,000	Metropolitan Government Nashville & Davidson County Convention Center Authority, Tennessee,	No Opt. Call	A1	15,856,800
	Tourism Tax Revenue Bonds, Build America Taxable Bonds, Series 2010A-2, 7.431%, 7/01/43

Nuveen Investments 17


	Nuveen Build America Bond Fund (continued)
NBB	Portfolio of Investments March 31, 2011


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	Texas – 6.1% (5.6% of Total Investments)
$ 10,000	North Texas Tollway Authority, System Revenue Bonds, Subordinate Lien Taxable Revenue Bonds,	2/20 at 100.00	Baa3	$ 10,387,300
	Federally Taxable Build America Bonds, Series 2010-B2, 8.910%, 2/01/30
15,000	North Texas Tollway Authority, System Revenue Bonds, Taxable Build America Bond Series 2009B,	No Opt. Call	A2	14,957,100
	6.718%, 1/01/49
5,000	San Antonio, Texas, General Obligation Bonds, Build America Taxable Bonds, Series 2010B,	8/20 at 100.00	AAA	5,109,650
	6.038%, 8/01/40
30,000	Total Texas			30,454,050
	Utah – 2.1% (1.9% of Total Investments)
5,000	Central Utah Water Conservancy District, Utah, Revenue Bonds, Federally Taxable Build America	4/20 at 100.00	AA+	4,587,750
	Bonds, Series 2010A, 5.700%, 10/01/40
5,415	Midvale Redevelopment Agency, Utah, Tax Increment and Sales Tax Revenue Bonds, Federally	5/20 at 100.00	AA+	5,210,205
	Taxable Build America Bonds, Series 2010, 6.250%, 5/01/34 – AGM Insured
775	North Salt Lake, Utah, Sales Tax Revenue Bonds, Build America Taxable Bond Series 2010,	12/19 at 100.00	AA–	741,900
	5.800%, 6/15/30
11,190	Total Utah			10,539,855
	Vermont – 1.0% (0.9% of Total Investments)
5,000	University of Vermont and State Agricultural College, Revenue Bonds, Build America Bonds	No Opt. Call	Aa3	4,904,350
	Series 2010, 6.428%, 10/01/44
	Virgin Islands – 2.6% (2.4% of Total Investments)
12,500	Virgin Islands Water and Power Authority, Electric System Revenue Bonds, Build America Taxable	No Opt. Call	AA+	12,946,250
	Bonds Series 2010C, 6.850%, 7/01/35 – AGM Insured
	Virginia – 2.4% (2.2% of Total Investments)
1,135	Metropolitan Washington DC Airports Authority, Virginia, Dulles Toll Road Revenue Bonds,	No Opt. Call	BBB+	1,114,888
	Series 2009D, 7.462%, 10/01/46 – AGC Insured
10,000	Metropolitan Washington DC Airports Authority, Virginia, Dulles Toll Road Revenue Bonds,	No Opt. Call	BBB	9,682,700
	Dulles Metrorail Capital Improvement Project, Build America Taxable Bonds, Series 2010D,
	8.000%, 10/01/47
1,705	Tobacco Settlement Financing Corporation of Virginia, Tobacco Settlement Asset Backed Bonds,	6/12 at 100.00	Baa3	1,049,155
	Refunding Senior Lien Series 2007A1, 6.706%, 6/01/46
12,840	Total Virginia			11,846,743
	Washington – 4.6% (4.2% of Total Investments)
2,465	Auburn, Washington, Limited Tax General Obligation Bonds, Taxable Build America Bonds, Series	6/20 at 100.00	AA	2,484,054
	2010B, 6.243%, 12/01/39
5,000	Grays Harbor County Public Utility District 1, Washington, Electric System Revenue Bonds,	No Opt. Call	A1	5,214,800
	Taxable Build America Bonds – Direct Payment, Series 2010A, 6.707%, 7/01/40
5,000	King County Public Hospital District 1, Washington, Hospital Facilities Revenue Bonds, Valley	6/20 at 100.00	BBB+	5,090,150
	Medical Center, Build America Taxable Bonds, Series 2010B, 8.000%, 6/15/40
5,000	Mason County Public Utility District 3, Washington, Electric Revenue Bonds, Build America	6/20 at 100.00	Aa3	4,823,100
	Taxable Bonds, Series 2010B, 6.347%, 12/01/40
2,505	Okanogan County Public Utility District 1, Washington, Electric System Revenue Bonds, Build	No Opt. Call	A1	2,374,840
	America Taxable Bonds – Direct Payment, Series 2010B, 6.046%, 12/01/40
4,000	Seattle, Washington, Municipal Light and Power Revenue Bonds, Federally Taxable Build America	No Opt. Call	Aa2	2,903,800
	Bonds, Tender Option Bond Trust T0001, 24.589%, 2/01/40 (IF) (4)
23,970	Total Washington			22,890,744

18 Nuveen Investments


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	Wyoming – 0.4% (0.4% of Total Investments)
$ 2,000	University of Wyoming, Facilities Improvement Revenue Bonds, Build America Taxable Bond Series	6/20 at 100.00	Aa2	$ 1,949,937
	2010C, 5.800%, 6/01/30
$ 547,575	Total Municipal Bonds (cost $560,917,578) – 109.6%			546,734,895
Principal
Amount (000)	Description (1)	Coupon	Maturity	Value
	Short-Term Investments – 0.1% (0.1% of Total Investments)
$ 545	Repurchase Agreement with State Street Bank, dated 3/31/11, repurchase price $545,330,	0.010%	4/01/11	545,330
	collateralized by $555,000 U.S. Treasury Notes, 1.000%, due 4/30/12, value $561,196
	Total Short-Term Investments (cost $545,330)			545,330
	Total Investments (cost $561,462,908) – 109.7%			547,280,225
	Borrowings – (8.8)% (5)			(44,000,000)
	Floating Rate Obligations – (5.0)%			(24,810,000)
	Other Assets Less Liabilities – 4.1% (6)			20,549,743
	Net Assets – 100%			$ 499,019,968

Investments in Derivatives

Swaps outstanding at March 31, 2011:

Fund

Fixed Rate

Unrealized

Notional

Pay/Receive

Floating Rate

Fixed Rate

Payment

Effective

Termination

Appreciation

Counterparty

Amount

Floating Rate

Index

(Annualized)

Frequency

Date (7)

Date

(Depreciation)

Barclays Bank PLC

94,000,000

Receive

3-Month USD-LIBOR

3.778

Semi-Annually

2/17/12

2/17/40

10,738,776

JPMorgan

19,200,000

Receive

1-Month USD-LIBOR

0.360

Monthly

3/21/11

3/21/12

2,508

JPMorgan

19,200,000

Receive

1-Month USD-LIBOR

1.193

Monthly

3/21/11

3/21/14

129,393

Morgan Stanley

19,200,000

Receive

1-Month USD-LIBOR

2.064

Monthly

3/21/11

3/21/16

248,022

Morgan Stanley

26,000,000

Receive

3-Month USD-LIBOR

4.435

Semi-Annually

2/24/12

2/24/40

238,354

11,357,053


(1)	All percentages shown in the Portfolio of Investments are based on net assets unless otherwise noted.
(2)	Optional Call Provisions (not covered by the report of independent registered public accounting firm): 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 peri-
	odic principal paydowns.
(3)	Ratings (not covered by the report of independent registered public accounting firm): Using the highest of Standard & Poor’s Group (“Standard & Poor’s”),
	Moody’s Investor Service, Inc. (“Moody’s”) or Fitch, Inc. (“Fitch”) rating. 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)	Borrowings as a percentage of Total Investments is 8.0%.
(6)	Other Assets Less Liabilities includes the Value and/or the Net Unrealized Appreciation (Depreciation) of derivative instruments as listed within Investments
	in Derivatives.
(7)	Effective date represents the date on which both the Fund and Counterparty commence interest payment accruals on each swap contract.
N/R	Not rated.
(IF)	Inverse floating rate investment.
(UB)	Underlying bond of an inverse floating rate trust reflected as a financing transaction. See Notes to Financial Statements, Footnote 1 – General Information
	and Significant Accounting Policies, Inverse Floating Rate Securities for more information.
USD-LIBOR	United States Dollar-London Inter-Bank Offered Rate.

See accompanying notes to financial statements.

Nuveen Investments 19


	Nuveen Build America Bond Opportunity Fund
NBD	Portfolio of Investments
	March 31, 2011

Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	California – 12.9% (12.5% of Total Investments)
$ 1,030	Bay Area Toll Authority, California, Revenue Bonds, San Francisco Bay Area Toll Bridge,	No Opt. Call	A+	$ 1,065,535
	Subordinate Lien, Build America Federally Taxable Bond Series 2010S-1, 7.043%, 4/01/50
1,500	California State Public Works Board, Lease Revenue Bonds, Various Capital Projects, Build	No Opt. Call	A2	1,592,205
	America Taxable Bond Series 2009G-2, 8.361%, 10/01/34
2,000	Hayward Unified School District, Alameda County, California, General Obligation Bonds, Build	8/20 at 100.00	AA+	2,018,500
	America Taxable Bonds, Series 2010B, 7.350%, 8/01/43 – AGM Insured
2,000	Los Angeles Community College District, Los Angeles County, California, General Obligation	No Opt. Call	Aa1	2,668,200
	Bonds, Tender Option Bond Trust TN027, 29.966%, 8/01/49 (IF) (4)
1,000	Los Angeles County Public Works Financing Authority, California, Lease Revenue Bonds, Multiple	No Opt. Call	A+	985,780
	Capital Projects I, Build America Taxable Bond Series 2010B, 7.618%, 8/01/40
2,000	Los Angeles Department of Water and Power, California, Water System Revenue Bonds, Tender	No Opt. Call	AA	2,513,100
	Option Bond Trust T0003, 29.995%, 7/01/42 (IF)
1,000	Oakland Redevelopment Agency, California, Subordinated Housing Set Aside Revenue Bonds,	No Opt. Call	A	982,240
	Federally Taxable Series 2011A-T, 7.500%, 9/01/19
1,500	San Diego County Regional Transportation Commission, California, Sales Tax Revenue Bonds,	No Opt. Call	AAA	1,486,410
	Build America Taxable Bonds Series 2010A, 5.911%, 4/01/48
2,000	San Francisco City and County, California, Certificates of Participation, 525 Golden Gate	No Opt. Call	AA–	1,391,500
	Avenue, San Francisco Public Utilities Commission Office Project, Tender Option Bond Trust
	B001, 29.243%, 11/01/30 (IF)
315	Stanton Redevelopment Agency, California, Consolidated Project Tax Allocation Bonds, Series	No Opt. Call	A–	308,177
	2011A, 7.000%, 12/01/19
3,000	The Regents of the University of California, Medical Center Pooled Revenue Bonds, Build	No Opt. Call	Aa2	2,976,540
	America Taxable Bonds, Series 2010H, 6.548%, 5/15/48
17,345	Total California			17,988,187
	Colorado – 4.4% (4.3% of Total Investments)
4,000	Colorado State Bridge Enterprise Revenue Bonds, Federally Taxable Build America Series 2010A,	No Opt. Call	AA	4,173,640
	6.078%, 12/01/40
2,000	Regional Transportation District, Colorado, Sales Tax Revenue Bonds, FasTracks Project, Build	No Opt. Call	AA+	1,958,800
	America Series 2010B, 5.844%, 11/01/50
6,000	Total Colorado			6,132,440
	Connecticut – 1.1% (1.1% of Total Investments)
1,500	Harbor Point Infrastructure Improvement District, Connecticut, Special Obligation Revenue	4/20 at 100.00	N/R	1,604,430
	Bonds, Harbor Point Project, Federally Taxable – Issuer Subsidy – Recovery Zone Economic
	Development Bond Series 2010B, 12.500%, 4/01/39
	District of Columbia – 2.7% (2.7% of Total Investments)
800	District of Columbia, Income Tax Secured Revenue Bonds, Build America Taxable Bonds, Series	No Opt. Call	AAA	808,024
	2009E, 5.591%, 12/01/34
3,000	District of Columbia, Income Tax Secured Revenue Bonds, Build America Taxable Bonds, Series	No Opt. Call	AAA	3,012,570
	2010F, 5.582%, 12/01/35
3,800	Total District of Columbia			3,820,594
	Georgia – 3.4% (3.3% of Total Investments)
2,000	Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project J Bonds, Taxable Build	No Opt. Call	A+	1,909,860
	America Bonds Series 2010A, 6.637%, 4/01/57
3,000	Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project P Bonds, Refunding	No Opt. Call	A–	2,806,560
	Taxable Build America Bonds Series 2010A, 7.055%, 4/01/57
5,000	Total Georgia			4,716,420

20 Nuveen Investments


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	Illinois – 13.1% (12.7% of Total Investments)
$ 3,375	Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Federally Taxable Build	No Opt. Call	AA	$ 3,007,598
	America Bonds, Series 2010B, 6.200%, 12/01/40
4,350	Chicago, Illinois, Wastewater Transmission Revenue Bonds, Build America Taxable Bond Series	No Opt. Call	Aa3	4,470,974
	2010B, 6.900%, 1/01/40
500	Cook County, Illinois, General Obligation Bonds, Build America Taxable Bonds, Series 2010D,	No Opt. Call	AA	480,795
	6.229%, 11/15/34
500	Illinois Finance Authority, Revenue Bonds, Illinois Institute of Technology, Refunding Series	4/11 at 100.00	Baa3	436,985
	2006A, 6.100%, 4/01/15
2,000	Illinois State, General Obligation Bonds, Build America Taxable Bonds, Series 2010-5,	No Opt. Call	A+	2,064,200
	7.350%, 7/01/35
3,000	Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Build America Taxable Bonds,	No Opt. Call	AA–	2,912,070
	Senior Lien Series 2009A, 6.184%, 1/01/34
2,500	Northern Illinois Municipal Power Agency, Power Project Revenue Bonds, Prairie State Project,	No Opt. Call	A2	2,776,725
	Build America Taxable Bond Series 2010A, 7.820%, 1/01/40
2,000	The Board of Trustee of Northern Illinois University, Auxiliary Facilities System Revenue	4/20 at 100.00	Aa3	2,148,920
	Bonds Federally Taxable Build America Series 2010, 7.947%, 4/01/35 – AGM Insured
18,225	Total Illinois			18,298,267
	Indiana – 1.8% (1.8% of Total Investments)
2,500	Indianapolis Local Public Improvement Bond Bank, Indiana, Build America Taxable Bonds, Series	No Opt. Call	AA+	2,563,225
	2010B-2, 6.116%, 1/15/40
	Kentucky – 2.2% (2.1% of Total Investments)
3,000	Louisville and Jefferson County Metropolitan Sewer District, Kentucky, Sewer and Drainage	No Opt. Call	AA–	3,079,980
	System Revenue Bonds, Build America Taxable Bonds Series 2010A, 6.250%, 5/15/43
	Massachusetts – 1.7% (1.6% of Total Investments)
2,000	Massachusetts, Transportation Fund Revenue Bonds, Accelerated Bridge Program, Tender Option	No Opt. Call	AAA	2,318,000
	Bond Trust T0004, 25.436%, 6/01/40 (IF)
	Michigan – 5.4% (5.2% of Total Investments)
3,000	Detroit City School District, Wayne County, Michigan, General Obligation Bonds, Build America	5/20 at 100.00	Aa2	2,870,730
	Taxable Bond Series 2010B, 6.845%, 5/01/40
1,000	Grand Rapids, Michigan, Sanitary Sewer System Revenue Bonds, Build America Taxable Bond Series	No Opt. Call	AA+	1,023,330
	2010A, 6.720%, 1/01/41
2,000	Michigan Tobacco Settlement Finance Authority, Tobacco Settlement Asset-Backed Revenue Bonds,	6/22 at 100.00	Baa3	1,496,280
	Taxable Turbo Series 2006A, 7.309%, 6/01/34
2,000	Wayne County Building Authority, Michigan, General Obligation Bonds, Jail Facilities,	12/20 at 100.00	A–	2,097,900
	Federally Taxable Recovery Zone Economic Development Series 2010, 10.000%, 12/01/40
8,000	Total Michigan			7,488,240
	Minnesota – 1.9% (1.8% of Total Investments)
2,500	Western Minnesota Municipal Power Agency, Power Supply Revenue Bonds, Build America Taxable	No Opt. Call	A1	2,609,675
	Bond Series 2010C, 6.770%, 1/01/46
	Mississippi – 1.7% (1.7% of Total Investments)
2,500	Mississippi State, General Obligation Bonds, Build America Taxable Bond Series 2010F,	No Opt. Call	AA	2,425,850
	5.245%, 11/01/34
	Missouri – 2.8% (2.7% of Total Investments)
1,150	Curators of the University of Missouri, System Facilities Revenue Bonds, Build America Taxable	No Opt. Call	AA+	1,202,877
	Bonds, Series 2010, 5.792%, 11/01/41
2,500	Missouri Joint Municipal Electric Utility Commission, Prairie State Power Project Revenue	No Opt. Call	A3	2,750,400
	Bond, Federally Taxable Build America Bonds – Direct Pay, Series 2010A, 7.897%, 1/01/42
3,650	Total Missouri			3,953,277

Nuveen Investments 21


	Nuveen Build America Bond Opportunity Fund (continued)
NBD	Portfolio of Investments March 31, 2011


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	Nevada – 2.8% (2.7% of Total Investments)
$ 1,615	Clark County, Nevada, Airport Revenue Bonds, Senior Lien Series 2009B, 6.881%, 7/01/42	7/19 at 100.00	Aa2	$ 1,614,968
2,000	Washoe County, Nevada, Highway Revenue, Motor Vehicle Fuel Tax Bonds, Federally Taxable Direct	No Opt. Call	A+	2,235,240
	Pay Build America Bonds, Series 2010E, 7.969%, 2/01/40
3,615	Total Nevada			3,850,208
	New Jersey – 5.5% (5.4% of Total Investments)
3,000	New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Build America	No Opt. Call	Aa3	2,929,470
	Bonds Issuer Subsidy Program, Series 2010C, 5.754%, 12/15/28
2,500	New Jersey Turnpike Authority, Revenue Bonds, Build America Taxable Bonds, Series 2010A,	No Opt. Call	A+	2,717,650
	7.102%, 1/01/41
2,050	Rutgers State University, New Jersey, Revenue Bonds, Build America Taxable Bond Series 2010H,	No Opt. Call	AA	2,057,175
	5.665%, 5/01/40
7,550	Total New Jersey			7,704,295
	New York – 10.1% (9.9% of Total Investments)
2,000	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, Tender	No Opt. Call	AAA	1,440,300
	Option Bond Trust B004, 24.523%, 3/15/40 (IF)
2,000	Metropolitan Transportation Authority, New York, Transportation Revenue Bonds, Federally	No Opt. Call	A	2,051,120
	Taxable Issuer Subsidy Build America Bonds, Series 2010A, 6.668%, 11/15/39
3,000	New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue	No Opt. Call	AA+	2,859,810
	Bonds, Second Generation Resolution, Build America Taxable Bonds, Fiscal 2011 Series 2010AA,
	5.440%, 6/15/43
2,000	New York City Municipal Water Finance Authority, New York, Water and Sewer System Revenue	No Opt. Call	AA+	2,074,900
	Bonds, Second Generation Resolution, Taxable Tender Option Bonds Trust T30001-2,
	26.399%, 6/15/44 (IF)
2,955	New York City Transitional Finance Authority, New York, Building Aid Revenue Bonds, Build	No Opt. Call	AA–	3,161,200
	America Taxable Bond Fiscal 2011 Series 2010S-1B, 6.828%, 7/15/40
2,500	New York City, New York, General Obligation Bonds, Federally Taxable Build America Bonds,	12/20 at 100.00	AA	2,596,450
	Series 2010-F1, 6.646%, 12/01/31
14,455	Total New York			14,183,780
	North Carolina – 1.0% (1.0% of Total Investments)
1,400	North Carolina Turnpike Authority, Triangle Expressway System State Annual Appropriation	1/19 at 100.00	AA	1,446,732
	Revenue Bonds, Federally Taxable Issuer Subsidy Build America Bonds, Series 2009B,
	6.700%, 1/01/39
	Ohio – 4.0% (3.9% of Total Investments)
2,500	American Municipal Power Inc., Ohio, Meldahl Hydroelectric Projects Revenue Bonds, Federally	No Opt. Call	A	2,603,600
	Taxable Build America Bonds, Series 2010B, 7.499%, 2/15/50
3,000	Northeast Ohio Regional Sewer District, Wastewater Improvement Revenue Bonds, Build America	11/20 at 100.00	AA+	2,958,210
	Taxable Bonds, Series 2010, 6.038%, 11/15/40
5,500	Total Ohio			5,561,810
	Pennsylvania – 4.1% (4.0% of Total Investments)
1,000	Kiski Area School District, Westmoreland County, Pennsylvania, General Obligation Bonds, Build	9/20 at 100.00	Aa3	1,030,690
	America Taxable Bond Series 2010, 6.626%, 9/01/35 – AGM Insured
2,500	Pennsylvania State, General Obligation Bonds, Build America Taxable Bonds, Third Series 2010B,	7/20 at 100.00	Aa1	2,515,950
	5.850%, 7/15/30
2,500	Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Build America Taxable Bonds, Series	No Opt. Call	Aa3	2,210,425
	2010B, 5.511%, 12/01/45
6,000	Total Pennsylvania			5,757,065

22 Nuveen Investments


Principal		Optional Call
Amount (000)	Description (1)	Provisions (2)	Ratings (3)	Value
	South Carolina – 7.1% (6.9% of Total Investments)
$ 205	South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper,	No Opt. Call	Aa2	$ 281,106
	Federally Taxable Build America Tender Option Bond Trust T30002, 29.430%, 1/01/50 (IF)
8,985	South Carolina Public Service Authority, Electric System Revenue Bonds, Santee Cooper,	No Opt. Call	Aa2	9,652,316
	Series 2010A, 6.454%, 1/01/50 (UB)
9,190	Total South Carolina			9,933,422
	Tennessee – 2.1% (2.1% of Total Investments)
3,000	Metropolitan Government Nashville & Davidson County Convention Center Authority, Tennessee,	No Opt. Call	Aa2	2,947,650
	Tourism Tax Revenue Bonds, Build America Taxable Bonds, Subordinate Lien Series 2010B,
	6.731%, 7/01/43
	Texas – 7.8% (7.6% of Total Investments)
1,810	Board of Regents, University of Texas System, Financing System Revenue Bonds, Build America	8/19 at 100.00	AAA	1,866,345
	Taxable Bonds, Series 2009B, 6.276%, 8/15/41
2,705	Dallas Area Rapid Transit, Texas, Senior Lien Sales Tax Revenue Bonds, Build America Taxable	No Opt. Call	AA+	2,800,811
	Bonds, Series 2009B, 5.999%, 12/01/44
2,000	Dallas Convention Center Hotel Development Corporation, Texas, Hotel Revenue Bonds, Build	No Opt. Call	A+	2,015,980
	America Taxable Bonds, Series 09B, 7.088%, 1/01/42
2,500	Dallas Independent School District, Dallas County, Texas, General Obligation Bonds, School	2/21 at 100.00	AAA	2,676,900
	Building, Build America Taxable Bond Series 2010C, 6.450%, 2/15/35
1,500	North Texas Tollway Authority, System Revenue Bonds, Subordinate Lien Taxable Revenue Bonds,	2/20 at 100.00	Baa3	1,558,095
	Federally Taxable Build America Bonds, Series 2010-B2, 8.910%, 2/01/30
10,515	Total Texas			10,918,131
	Virginia – 1.3% (1.3% of Total Investments)
3,000	Tobacco Settlement Financing Corporation of Virginia, Tobacco Settlement Asset Backed Bonds,	6/12 at 100.00	Baa3	1,846,020
	Refunding Senior Lien Series 2007A1, 6.706%, 6/01/46
	Washington – 1.7% (1.7% of Total Investments)
1,000	Washington State Convention Center Public Facilities District, Lodging Tax Revenue Bonds,	No Opt. Call	Aa3	981,180
	Build America Taxable Bond Series 2010B, 6.790%, 7/01/40
1,500	Washington State Economic Development Finance Authority, Biomedical Research Properties Lease	No Opt. Call	AA+	1,466,159
	Revenue Bonds, Build America Series 2010, 6.516%, 7/01/42
2,500	Total Washington			2,447,339
$ 142,745	Total Investments (cost $140,941,211) – 102.6%			143,595,037
	Floating Rate Obligations – (5.1)%			(7,190,000)
	Other Assets Less Liabilities – 2.5% (5)			3,567,299
	Net Assets – 100%			$ 139,972,336

Nuveen Investments 23


	Nuveen Build America Bond Opportunity Fund (continued)
NBD	Portfolio of Investments March 31, 2011

Investments in Derivatives

Swaps outstanding at March 31, 2011:

Fund

Fixed Rate

Unrealized

Notional

Pay/Receive

Floating Rate

Fixed Rate

Payment

Effective

Termination

Appreciation

Counterparty

Amount

Floating Rate

Index

(Annualized)

Frequency

Date (6)

Date

(Depreciation)

Barclays Bank PLC

11,200,000

Receive

1-Month USD-LIBOR

2.240

Monthly

12/17/10

12/17/15

(6,786

)

Morgan Stanley

11,200,000

Receive

1-Month USD-LIBOR

0.496

Monthly

12/17/10

12/17/11

(15,271

)

Morgan Stanley

11,200,000

Receive

1-Month USD-LIBOR

1.295

Monthly

12/17/10

12/17/13

(4,663

)

Morgan Stanley

20,000,000

Receive

3-Month USD-LIBOR

4.334

Semi-Annually

1/12/12

1/12/40

417,800

Morgan Stanley

12,000,000

Receive

3-Month USD-LIBOR

4.435

Semi-Annually

2/24/12

2/24/40

110,009

Morgan Stanley

17,000,000

Receive

3-Month USD-LIBOR

4.600

Semi-Annually

1/27/12

1/27/40

(348,172

)

152,917


(1)	All percentages shown in the Portfolio of Investments are based on net assets unless otherwise noted.
(2)	Optional Call Provisions (not covered by the report of independent registered public accounting firm): 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 peri-
	odic principal paydowns.
(3)	Ratings (not covered by the report of independent registered public accounting firm): Using the highest of Standard & Poor’s Group (“Standard & Poor’s”),
	Moody’s Investor Service, Inc. (“Moody’s”) or Fitch, Inc. (“Fitch”) rating. 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 inverse floating rate transactions.
(5)	Other Assets Less Liabilities includes the Value and/or the Net Unrealized Appreciation (Depreciation) of derivative instruments as listed within Investments
	in Derivatives.
(6)	Effective date represents the date on which both the Fund and Counterparty commence interest payment accruals on each swap contract.
N/R	Not rated.
(IF)	Inverse floating rate investment.
(UB)	Underlying bond of an inverse floating rate trust reflected as a financing transaction. See Notes to Financial Statements, Footnote 1 – General Information
	and Significant Accounting Policies, Inverse Floating Rate Securities for more information.
USD-LIBOR	United States Dollar-London Inter-Bank Offered Rate.

See accompanying notes to financial statements.

24 Nuveen Investments


Statement of
Assets & Liabilities
	March 31, 2011

	Build America			Build America
	Bond			Bond Opportunity
	(NBB)			(NBD)
Assets
Investments, at value (cost $561,462,908 and $140,941,211, respectively)	$	547,280,225		$	143,595,037
Cash		—			513,632
Unrealized appreciation on swaps		11,357,053			159,703
Receivables:
From Adviser		—			154,853
Interest		12,437,254			3,592,050
Other assets		32,783			—
Total assets		571,107,315			148,015,275
Liabilities
Borrowings		44,000,000			—
Floating rate obligations		24,810,000			7,190,000
Unrealized depreciation on swaps		—			6,786
Dividends payable		2,722,509			677,393
Accrued expenses:
Interest on borrowings		46,172			—
Management fees		341,352			104,262
Other		167,314			64,498
Total liabilities		72,087,347			8,042,939
Net assets	$	499,019,968		$	139,972,336
Shares outstanding		26,461,985			7,205,250
Net asset value per share outstanding	$	18.86		$	19.43
Net assets consist of:
Shares, $.01 par value per share	$	264,620		$	72,053
Paid-in surplus		504,161,092			137,260,222
Undistributed (Over-distribution of) net investment income		547,329			545,608
Accumulated net realized gain (loss)		(3,127,443	)		(712,290	)
Net unrealized appreciation (depreciation)		(2,825,630	)		2,806,743
Net assets	$	499,019,968		$	139,972,336
Authorized shares	Unlimited			Unlimited

See accompanying notes to financial statements.

Nuveen Investments 25


Statement of
Operations
	Build America			Build America
	Bond			Bond Opportunity
	(NBB)		*	(NBD)		**
Investment Income	$	36,463,304		$	3,785,559
Expenses
Management fees		3,669,718			332,078
Shareholders’ servicing agent fees and expenses		239			319
Interest expense		1,166,818			14,723
Custodian’s fees and expenses		91,419			8,395
Trustees’ fees and expenses		14,871			7,444
Professional fees		83,090			32,759
Shareholders’ reports – printing and mailing expenses		90,806			19,745
Investor relations expense		36,708			5,348
Other expenses		16,877			4,993
Total expenses before custodian fee credit		5,170,546			425,804
Custodian fee credit		(24,258	)		(39	)
Net expenses		5,146,288			425,765
Net investment income (loss)		31,317,016			3,359,794
Realized and Unrealized Gain (Loss)
Net realized gain (loss) from:
Investments		8,023,380			(712,015	)
Swaps		(11,126,000	)		(90,877	)
Net unrealized appreciation (depreciation) of:
Investments		(14,182,683	)		2,653,826
Swaps		11,357,053			152,917
Net realized and unrealized gain (loss)		(5,928,250	)		2,003,851
Net increase (decrease) in net assets from operations	$	25,388,766		$	5,363,645

*	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
**	For the period November 23, 2010 (commencement of operations) through March 31, 2011.

See accompanying notes to financial statements.

26 Nuveen Investments


Statement of
Changes in Net Assets
	Build America			Build America
	Bond			Bond Opportunity
	(NBB)		*	(NBD)		**
Operations
Net investment income	$	31,317,016		$	3,359,794
Net realized gain (loss) from:
Investments		8,023,380			(712,015	)
Swaps		(11,126,000	)		(90,877	)
Net unrealized appreciation (depreciation) of:
Investments		(14,182,683	)		2,653,826
Swaps		11,357,053			152,917
Net increase (decrease) in net assets from operations		25,388,766			5,363,645
Distributions to Shareholders
From net investment income		(30,794,510	)		(2,723,584	)
Decrease in net assets from distributions to shareholders		(30,794,510	)		(2,723,584	)
Capital Share Transactions
Proceeds from sale of shares, net of offering costs		502,469,250			137,232,000
Net proceeds from shares issued to shareholders due to reinvestment of distributions		1,856,187			—
Net increase (decrease) in net assets applicable to shares from capital share transactions		504,325,437			137,232,000
Net increase (decrease) in net assets		498,919,693			139,872,061
Net assets at the beginning of period		100,275			100,275
Net assets at the end of period	$	499,019,968		$	139,972,336
Undistributed (Over-distribution of) net investment income at the end of period	$	547,329		$	545,608

*	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
**	For the period November 23, 2010 (commencement of operations) through March 31, 2011.

See accompanying notes to financial statements.

Nuveen Investments 27


Statement of
Cash Flows
	Build America
	Bond
	(NBB)*
Cash Flows from Operating Activities:
Net Increase (Decrease) in Net Assets from Operations	$	25,388,766
Adjustments to reconcile the net increase (decrease) in net assets from operations to net cash
provided by (used in) operating activities:
Purchases of investments		(1,120,458,403	)
Proceeds from sales and maturities of investments		567,409,551
Proceeds from (Purchases of) short-term investments, net		(545,330	)
Proceeds from terminated swap contracts		(11,126,000	)
Amortization (Accretion) of premiums and discounts, net		154,654
(Increase) Decrease in:
Receivable for interest		(12,437,254	)
Other assets		(32,783	)
Increase (Decrease) in:
Accrued interest on borrowings		46,172
Accrued management fees		341,352
Accrued other expenses		167,314
Net realized (gain) loss from:
Investments		(8,023,380	)
Swaps		11,126,000
Net unrealized (appreciation) depreciation of:
Investments		14,182,683
Swaps		(11,357,053	)
Net cash provided by (used in) operating activities		(545,163,711	)
Cash Flows from Financing Activities:
Increase (Decrease) in:
Borrowings		44,000,000
Floating rate obligations		24,810,000
Cash distributions paid to shareholders		(26,215,814	)
Proceeds for sale of shares, net of offering costs		502,469,250
Net cash provided by (used in) financing activities		545,063,436
Net Increase (Decrease) in Cash		(100,275	)
Cash at the beginning of period		100,275
Cash at the End of Period	$	—

* For the period April 27, 2010 (commencement of operations) through March 31, 2011

Supplemental Disclosure of Cash Flow Information

Cash paid for interest was $800,983.

Non-cash financing activities not included herein consists of reinvestments of distributions of $1,856,186.

See accompanying notes to financial statements.

28 Nuveen Investments

Financial

Highlights

Nuveen Investments 29

Financial

Highlights

Selected data for a share outstanding throughout each period:


			Investment Operations										Less Distributions
				Net		Net
	Beginning			Investment		Realized/					Net											Ending		Ending
	Net Asset			Income		Unrealized					Investment			Capital					Offering			Net Asset		Market
	Value			(Loss)(a)		Gain (Loss)			Total		Income			Gains		Total			Costs			Value		Value
Build America Bond (NBB)
Year Ended 3/31:
2011(f)	$	19.10		$	1.19	$	(.22	)	$	.97	$	(1.17	)	$	—	$	(1.17	)	$	(0.04	)	$	18.86	$	18.06
Build America Bond Opportunity (NBD)
Year Ended 3/31:
2011(g)		19.10			.47		.28			.75		(.38	)		—		(.38	)		(0.04	)		19.43		18.63

	Borrowings at End of Period
	Aggregate
		Amount			Asset
	Outstanding				Coverage
			(000	)	Per $1,000
Build America Bond (NBB)
Year Ended 3/31:
2011(f)		$	44,000		$	12,341
Build America Bond Opportunity (NBD)
Year Ended 3/31:
2011(g)			—			—

30 Nuveen Investments

Ratios/Supplemental Data

Ratios to Average

Total Returns

Net Assets(c)

Expenses

Based on

Ending

Including

Excluding

Net

Portfolio

Market

Net Asset

Net Assets

Costs of

Investment

Turnover

Value(b)

(000)

Leverage(d)(e)

Leverage

Income(d)

Rate

(3.99

4.90

499,020

1.11

.86

6.70

100

(4.96

)

3.73

139,972

.87

.84

6.90

(a)	Per share Net Investment Income (Loss) is calculated using the average daily shares method.
(b)	Total Return Based on Market Value is the combination of changes in the market price per share and the effect of reinvested dividend income and reinvested capital gains distributions, if any, at the average price paid per share at the time of reinvestment. The last dividend declared in the period, which is typically paid on the first business day of the following month, is assumed to be reinvested at the ending market price. The actual reinvestment for the last dividend declared in the period may take place over several days, and in some instances may not be based on the market price, so the actual reinvestment price may be different from the price used in the calculation.
	Total returns are not annualized.

	Total Return Based on Net Asset Value is the combination of changes in net asset value, reinvested dividend income at net asset value and reinvested capital gains distributions at net asset value, if any. The last dividend declared in the period, which is typically paid on the first business day of the following month, is assumed to be reinvested at the ending net asset value. The actual reinvest price for the last dividend declared in the period may often be based on the Fund’s market price (and not its net asset value), and therefore may be different from the price used in the calculation. Total returns are not annualized.
(c)	Ratios do not reflect the effect of custodian fee credits earned on the Fund’s net cash on deposit with the custodian bank, where applicable.
(d)	Each ratio includes the effect of the interest expense and fees paid on borrowings, where applicable, as described in Footnote 8 – Borrowing Arrangements, as follows:

	Ratios of Borrowings Interest Expense and Fees to
	Average Net Assets
Build America Bond (NBB)
Year Ended 3/31:
2011(f)	.24%*

(e)	The expense ratios reflect, among other things, interest expense deemed to have been paid by the Fund on the floating rate certificates issued by the special purpose trusts for the self-deposited inverse floaters held by the Fund, where applicable, as described in Footnote 1 – General Information and Significant Accounting Policies Inverse Floating Rate Securities.
(f)	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
(g)	For the period November 23, 2010 (commencement of operations) through March 31, 2011.
*	Annualized.

See accompanying notes to financial statements.

Nuveen Investments 31

Notes to

Financial Statements

1. General Information and Significant Accounting Policies

General Information

The funds covered in this report and their corresponding New York Stock Exchange (“NYSE”) symbols are Nuveen Build America Bond Fund (NBB) and Nuveen Build America Bond Opportunity Fund (NBD) (collectively, the “Funds”). The Funds are registered under the Investment Company Act of 1940, as amended, as closed-end, registered investment companies.

Effective January 1, 2011, the Funds’ adviser, Nuveen Asset Management, a wholly-owned subsidiary of Nuveen Investments, Inc. (“Nuveen”), changed its name to Nuveen Fund Advisors, Inc. (the “Adviser”). Concurrently, the Adviser formed a wholly-owned subsidiary, Nuveen Asset Management, LLC (the “Sub-Adviser”), to house its portfolio management capabilities and to serve as the Funds’ sub-adviser, and the Funds’ portfolio manager became an employee of the Sub-Adviser. This allocation of responsibilities between the Adviser and the Sub-Adviser affects both of the Funds. The Adviser will compensate the Sub-Adviser for the portfolio management services it provides to the Funds from each Fund’s management fee.

Prior to the commencement of operations, the Funds had no operations other than those related to organizational matters, the initial capital contribution of $100,275 to each Fund by the Adviser, and the recording of the organization expense ($11,000 per Fund) and their reimbursement by the Adviser.

Each Fund’s primary investment objective is to provide current income through investments in taxable municipal securities. Each Fund’s secondary investment objective is to seek enhanced portfolio value and total return. The Funds seek to achieve their investment objectives by investing primarily in a diversified portfolio of taxable municipal securities known as Build America Bonds (or “BABs”), which make up 80% of their managed assets (as defined in Footnote 7 – Management Fees and Other Transactions with Affiliates). BABs are taxable municipal securities that include bonds issued by state and local governments to finance capital projects such as public schools, roads, transportation infrastructure, bridges, ports and public buildings, among others, pursuant to the American Recovery and Reinvestment Act of 2009, which offer municipal issuers a federal subsidy equal to 35% of a bond’s interest payments. Under normal circumstances, the Funds may invest 20% of their managed assets in securities other than BABs, including taxable and tax-exempt municipal securities, U.S. Treasury and other U.S. government agency securities. At least 80% of each Fund’s managed assets will be invested in securities that are investment grade quality at the time of purchase, as rated by at least one independent rating agency or judged to be of comparable quality by the Sub-Adviser. In addition, each Fund will use an integrated leverage and hedging strategy that the Fund has the potential to enhance income and risk-adjusted total return over time. Each Fund may employ leverage instruments such as borrowings, including loans from certain financial institutions, and portfolio investments that have the economic effect of leverage, including investments in inverse floating rate securities. Each Fund’s overall goal is to outperform over time the Barclays Capital Build America Bond Index, an unleveraged index representing the BABs market, while maintaining a comparable overall level of interest rate risk.

The BAB program expired on December 31, 2010, and was not renewed. Build America Bond (NBB) and Build American Bond Opportunity (NBD) each have contingent term provisions stating that if there are no new issuances of BABs or similarly U.S. Treasury-subsidized taxable municipal bonds for any twenty-four month period ending on or before December 31, 2014, Build America Bond (NBB) and Build American Bond Opportunity (NBD) will terminate on or around June 30, 2020, and December 31, 2020, respectively.

Significant Accounting Policies

The following is a summary of significant accounting policies followed by the Funds in the preparation of their financial statements in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”).

Investment Valuation

Prices of municipal bonds and swap contracts are provided by a pricing service approved by the Funds’ Board of Trustees. These securities are generally classified as Level 2 for fair value measurement purposes. When price quotes are not readily available (which is usually the case for municipal bonds) the pricing service establishes a security’s fair value using methods that may include consideration of the following: yields or prices of investments of comparable quality, type of issue, coupon, maturity and rating, market quotes or indications of value from security dealers, evaluations of anticipated cash flows or collateral, general market conditions and other information and analysis, including the obligor’s credit characteristics considered relevant. In pricing certain securities, particularly less liquid and lower quality securities, the pricing service may consider information about a security, its issuer, or market activity provided by the Adviser. These securities are generally classified as Level 2 or Level 3 depending on the priority of the significant inputs.

32 Nuveen Investments

Repurchase agreements are valued at contract amount plus accrued interest, which approximates market value. These securities are generally classified as Level 2.

Certain securities may not be able to be priced by the pre-established pricing methods as described above. Such securities may be valued by the Funds’ Board of Trustees or its designee at fair value. These securities generally include, but are not limited to, restricted securities (securities which may not be publicly sold without registration under the Securities Act of 1933, as amended) for which a pricing service is unable to provide a market price; securities whose trading has been formally suspended; debt securities that have gone into default and for which there is no current market quotation; a security whose market price is not available from a pre-established pricing source; a security with respect to which an event has occurred that is likely to materially affect the value of the security after the market has closed but before the calculation of a Fund’s net asset value (as may be the case in non-U.S. markets on which the security is primarily traded) or make it difficult or impossible to obtain a reliable market quotation; and a security whose price, as provided by the pricing service, is not deemed to reflect the security’s fair value. As a general principle, the fair value of a security would appear to be the amount that the owner might reasonably expect to receive for it in a current sale. A variety of factors may be considered in determining the fair value of such securities, which may include consideration of the following: yields or prices of investments of comparable quality, type of issue, coupon, maturity and rating, market quotes or indications of value from security dealers, evaluations of anticipated cash flows or collateral, general market conditions and other information and analysis, including the obligor’s credit characteristics considered relevant. These securities are generally classified as Level 2 or Level 3 depending on the priority of the significant inputs. Regardless of the method employed to value a particular security, all valuations are subject to review by the Funds’ Board of Trustees or its designee.

Refer to Footnote 2 – Fair Value Measurements for further details on the leveling of securities held by the Funds as of the end of the reporting period.

Investment Transactions

Investment transactions are recorded on a trade date basis. Realized gains and losses from transactions are determined on the specific identification method, which is the same basis used for federal income tax purposes. Investments purchased on a when-issued/delayed delivery basis may have extended settlement periods. Any investments so purchased are subject to market fluctuation during this period. The Funds have instructed the custodian to segregate assets with a current value at least equal to the amount of the when-issued/delayed delivery purchase commitments. At March 31, 2011, the Funds had no such outstanding purchase commitments.

Investment Income

Investment income, which reflects the amortization of premiums and includes accretion of discounts for financial reporting purposes, is recorded on an accrual basis. Investment income also reflects paydown gains and losses, if any.

Income Taxes

Each Fund is a separate taxpayer for federal income tax purposes. Each Fund intends to distribute substantially all of its net investment income and net capital gains to shareholders and to otherwise comply with the requirements of Subchapter M of the Internal Revenue Code applicable to regulated investment companies. Therefore, no federal income tax provision is required.

For all open tax years and all major taxing jurisdictions, management of the Funds has concluded that there are no significant uncertain tax positions that would require recognition in the financial statements. Open tax years are those that are open for examination by taxing authorities (i.e., generally the last four tax year ends and the interim tax period since then). Furthermore, management of the Funds is also not aware of any tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months.

Dividends and Distributions to Shareholders

Dividends to shareholders are declared monthly. Net realized capital gains from investment transactions, if any, are distributed to shareholders at least annually. Furthermore, capital gains are distributed only to the extent they exceed available capital loss carryforwards.

Distributions to shareholders are recorded on the ex-dividend date. The amount and timing of distributions are determined in accordance with federal income tax regulations, which may differ from U.S. GAAP.

Inverse Floating Rate Securities

Each Fund is authorized to invest in inverse floating rate securities. An inverse floating rate security is created by depositing a municipal bond, typically with a fixed interest rate, into a special purpose trust created by a broker-dealer. In turn, this trust (a) issues floating rate certificates, in face amounts equal to some fraction of the deposited bond’s par amount or market value, that typically pay short-term tax-exempt interest rates to third parties, and (b) issues to a long-term investor (such as one of the Funds) an inverse floating rate certificate (sometimes referred to as an “inverse floater”) that represents all remaining or residual interest in the trust. The income received by the inverse floater holder varies inversely with the short-term rate paid to the floating rate certificates’ holders, and in most circumstances the inverse floater holder bears substantially all of the underlying bond’s downside investment risk and also benefits disproportionately from any potential appreciation of the underlying bond’s value. The price of an inverse floating rate security will be more volatile than that of the underlying bond because the interest rate is dependent on not only the fixed coupon rate of the underlying bond but also on the short-term interest paid on the floating rate certificates, and because the inverse floating rate security essentially bears the risk of loss of the greater face value of the underlying bond.

Nuveen Investments 33

Notes to

Financial Statements (continued)

A Fund may purchase an inverse floating rate security in a secondary market transaction without first owning the underlying bond (referred to as an “externally-deposited inverse floater”), or instead by first selling a fixed-rate bond to a broker-dealer for deposit into the special purpose trust and receiving in turn the residual interest in the trust (referred to as a “self-deposited inverse floater”). The inverse floater held by a Fund gives the Fund the right (a) to cause the holders of the floating rate certificates to tender their notes at par, and (b) to have the broker transfer the fixed-rate bond held by the trust to the Fund, thereby collapsing the trust. An investment in an externally-deposited inverse floater is identified in the Portfolio of Investments as “(IF) – Inverse floating rate investment.” An investment in a self-deposited inverse floater is accounted for as a financing transaction. In such instances, a fixed-rate bond deposited into a special purpose trust is identified in the Portfolio of Investments as “(UB) – Underlying bond of an inverse floating rate trust reflected as a financing transaction,” with the Fund accounting for the short-term floating rate certificates issued by the trust as “Floating rate obligations” on the Statement of Assets and Liabilities. In addition, the Fund reflects in “Investment Income” the entire earnings of the underlying bond and the related interest paid to the holders of the short-term floating rate certificates as a component of “Interest expense” on the Statement of Operations.

During the period from each Fund’s commencement of operations through March 31, 2011, each Fund invested in externally-deposited inverse floaters and/or self-deposited inverse floaters.

Each Fund may also enter into shortfall and forbearance agreements (sometimes referred to as a “recourse trust” or “credit recovery swap”) (such agreements referred to herein as “Recourse Trusts”) with a broker-dealer by which a Fund agrees to reimburse the broker-dealer, in certain circumstances, for the difference between the liquidation value of the fixed-rate bond held by the trust and the liquidation value of the floating rate certificates issued by the trust plus any shortfalls in interest cash flows. Under these agreements, a Fund’s potential exposure to losses related to or on inverse floaters may increase beyond the value of a Fund’s inverse floater investments as a Fund may potentially be liable to fulfill all amounts owed to holders of the floating rate certificates. At period end, any such shortfall is recognized as “Unrealized depreciation on Recourse Trusts” on the Statement of Assets and Liabilities.


At March 31, 2011, each Fund’s maximum exposure to externally-deposited Recourse Trusts, was as follows:
	Build	Build America
	America	Bond
	Bond	Opportunity
	(NBB)	(NBD)
Maximum exposure to Recourse Trusts	$91,190,000	$40,810,000

The average floating rate obligations outstanding and average annual interest rate and fees related to self-deposited inverse floaters for the Funds during the period from each Fund’s commencement of operations through March 31, 2011, were as follows:


	Build			Build America
	America			Bond
	Bond			Opportunity
	(NBB)		*	(NBD)		**
Average floating rate obligations outstanding	$	7,444,521		$	1,989,562
Average annual interest rate and fees		0.75	%		0.74	%

*	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
**	For the period November 23, 2010 (commencement of operations) through March 31, 2011.

Swap Contracts

Each Fund is authorized to enter into interest rate swap and forward interest rate swap contracts consistent with their investment objectives and policies to reduce, increase or otherwise alter its risk profile or to alter its portfolio characteristics (i.e. duration, yield curve positioning and credit quality), and is subject to interest rate risk in the normal course of pursuing its investment objectives. Each Fund’s use of interest rate swap and forward interest rate swap transactions is intended to help the Fund manage its overall interest rate sensitivity, either shorter or longer, generally to more closely align the Fund’s interest rate sensitivity with that of the broader market.

Interest rate swap contracts involve each Fund’s agreement with the counterparty to pay or receive a fixed rate payment in exchange for the counterparty receiving or paying a variable rate payment. Forward interest rate swap transactions involve a Fund’s agreement with a counterparty to pay, in the future, a fixed or variable rate payment in exchange for the counterparty paying a Fund a variable or fixed rate payment, the accruals for which would begin at a specified date in the future (the “effective date”). The amount of the payment obligation on a swap contract is based on the notional amount and the termination date of the swap (which is akin to a bond’s maturity). The value of a Fund’s swap commitment will increase or decrease based primarily on the extent to which long-term interest rates for bonds having a maturity of the swap’s termination date increase or decrease. Interest rate swap and forward interest rate swap contracts are valued daily. Upon entering into an interest rate swap (and beginning on the effective date for a forward interest rate swap), each Fund accrues the fixed rate payment expected to be paid or received and the variable rate payment expected to be received or paid on a daily basis, and recognizes the daily change in the market value of the Fund’s contractual rights and obligations under the contracts. The net amount recorded on these transactions, for each counterparty is recognized on the Statement of Assets and

34 Nuveen Investments

Liabilities as a component of “Unrealized appreciation or depreciation on swaps” with the change during the fiscal period recognized on the Statement of Operations as a component of “Net unrealized appreciation (depreciation) of swaps.”

When an interest rate swap or forward interest rate swap contract is terminated, it ordinarily does not involve the delivery of securities or other underlying assets or principal, but rather is settled in cash on a net basis. Once periodic payments are settled in cash, they are combined with the net realized gain or loss recorded upon the termination of the swap contracts. For tax purposes, periodic payments are treated as ordinary income or expense. Net realized gains and losses on swap contracts during the fiscal period are recognized on the Statement of Operations as a component of “Net realized gain (loss) from swaps.”

The Funds entered into interest rate and forward interest rate swap transactions to reduce the duration of each Fund’s portfolio as well as to fix its interest cost of leverage. The average notional amount of swap contracts outstanding during the period from each Fund’s commencement of operations through March 31, 2011, was as follows:


	Build		Build America
	America		Bond
	Bond		Opportunity
	(NBB)	*	(NBD)	**
Average notional amount of swap contracts outstanding***	$128,150,000		$82,600,000

*	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
**	For the period November 23, 2010 (commencement of operations) through March 31, 2011.
***	Includes both interest rate and forward interest rate swaps. The average notional amount is calculated based on the outstanding notional at the beginning of the fiscal year and at the end of each fiscal quarter within the current fiscal year.

Refer to Footnote 3 – Derivative instruments and Hedging Activities for further details on swap contract activity.

Market and Counterparty Credit Risk

In the normal course of business each Fund may invest in financial instruments and enter into financial transactions where risk of potential loss exists due to changes in the market (market risk) or failure of the other party to the transaction to perform (counterparty credit risk). The potential loss could exceed the value of the financial assets recorded on the financial statements. Financial assets, which potentially expose each Fund to counterparty credit risk, consist principally of cash due from counterparties on forward, option and swap transactions, when applicable. The extent of each Fund’s exposure to counterparty credit risk in respect to these financial assets approximates their carrying value as recorded on the Statement of Assets and Liabilities. Futures contracts, when applicable, expose a Fund to minimal counterparty credit risk as they are exchange traded and the exchange’s clearinghouse, which is counterparty to all exchange traded futures, guarantees the futures contracts against default.

Each Fund helps manage counterparty credit risk by entering into agreements only with counterparties the Adviser believes have the financial resources to honor their obligations and by having the Adviser monitor the financial stability of the counterparties. Additionally, counterparties may be required to pledge collateral daily (based on the daily valuation of the financial asset) on behalf of each Fund with a value approximately equal to the amount of any unrealized gain above a pre-determined threshold. Reciprocally, when each Fund has an unrealized loss, the Funds have instructed the custodian to pledge assets of the Funds as collateral with a value approximately equal to the amount of the unrealized loss above a pre-determined threshold. Collateral pledges are monitored and subsequently adjusted if and when the valuations fluctuate, either up or down, by at least the predetermined threshold amount.

Zero Coupon Securities

Each Fund is authorized to invest in zero coupon securities. A zero coupon security does not pay a regular interest coupon to its holders during the life of the security. Tax-exempt income to the holder of the security comes from accretion of the difference between the original purchase price of the security at issuance and the par value of the security at maturity and is effectively paid at maturity. The market prices of zero coupon securities generally are more volatile than the market prices of securities that pay interest periodically.

Repurchase Agreements

In connection with transactions in repurchase agreements, it is each Fund’s policy that its custodian take possession of the underlying collateral securities, the fair value of which exceeds the principal amount of the repurchase transaction, including accrued interest, at all times. If the counterparty defaults, and the fair value of the collateral declines, realization of the collateral may be delayed or limited.

Organization Expenses and Offering Costs

The Adviser has agreed to reimburse all organization expenses ($11,000 for each Fund) and pay all offering costs (other than the sales load) that exceed $.04 per share for each Fund. The Funds’ share of offering costs ($1,054,500 and $288,000, for Build America Bond (NBB) and Build America Bond Opportunity (NBD), respectively) were recorded as a reduction of the proceeds from the sale of shares.

Nuveen Investments 35

Notes to

Financial Statements (continued)

Custodian Fee Credit

Each Fund has an arrangement with the custodian bank whereby certain custodian fees and expenses are reduced by net credits earned on each Fund’s cash on deposit with the bank. Such deposit arrangements are an alternative to overnight investments. Credits for cash balances may be offset by charges for any days on which a Fund overdraws its account at the custodian bank.

Indemnifications

Under the Funds’ organizational documents, their officers and trustees are indemnified against certain liabilities arising out of the performance of their duties to the Funds. In addition, in the normal course of business, the Funds enter into contracts that provide general indemnifications to other parties. The Funds’ maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Funds that have not yet occurred. However, the Funds have not had prior claims or losses pursuant to these contracts and expect the risk of loss to be remote.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results may differ from those estimates.

2. Fair Value Measurements

Fair value is defined as the price that the Funds would receive upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market of 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 three-tier hierarchy of inputs is summarized in the three broad levels listed below:

Level 1 – Quoted prices in active markets for identical securities.

Level 2 – Other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.).

Level 3 – 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 each Fund’s fair value measurements as of March 31, 2011:


Build America Bond (NBB)	Level 1		Level 2		Level 3		Total
Investments:
Municipal Bonds	$	—	$	546,734,895	$	—	$	546,734,895
Short-Term Investments		—		545,330		—		545,330
Derivatives:
Swaps*		—		11,357,053		—		11,357,053
Total	$	—	$	558,637,278	$	—	$	558,637,278

Build America Bond Opportunity (NBD)	Level 1		Level 2		Level 3		Total
Investments:
Municipal Bonds	$	—	$	143,595,037	$	—	$	143,595,037
Derivatives:
Swaps*		—		152,917		—		152,917
Total	$	—	$	143,747,954	$	—	$	143,747,954

* Represents net unrealized appreciation (depreciation).

During the period from each Fund’s commencement of operations through March 31, 2011, the Funds recognized no significant transfers to/from Level 1, Level 2 or Level 3.

3. Derivative Instruments and Hedging Activities

The Funds record derivative instruments at fair value, with changes in fair value recognized on the Statement of Operations, when applicable. Even though the Funds’ investments in derivatives may represent economic hedges, they are not considered to be hedge transactions for financial reporting purposes. For additional information on the derivative instruments in which each Fund was invested during and at the end of the reporting period, refer to the Portfolios of Investments, Financial Statements and Footnote 1 – General Information and Significant Accounting Policies.

36 Nuveen Investments

The following tables present the fair value of all derivative instruments held by the Funds as of March 31, 2011, the location of these instruments on the Statement of Assets and Liabilities, and the primary underlying risk exposure.


Build America Bond (NBB)		Location on the Statement of Assets and Liabilities
		Asset Derivatives			Liability Derivatives
Underlying	Derivative
Risk Exposure	Instrument	Location	Value		Location	Value
Interest Rate	Swaps	Unrealized appreciation on swaps*	$	11,357,053	Unrealized depreciation on swaps*	$	—

Build America Bond Opportunity (NBD)		Location on the Statement of Assets and Liabilities
		Asset Derivatives			Liability Derivatives
Underlying	Derivative
Risk Exposure	Instrument	Location	Value		Location	Value
Interest Rate	Swaps	Unrealized appreciation on swaps*	$	527,809	Unrealized depreciation on swaps*	$	374,892

* Represents cumulative gross unrealized appreciation (depreciation) of swap contracts as reported in the Portfolios of Investments.

The following tables present the amount of net realized gain (loss) and net unrealized appreciation (deprecation) recognized for the period from each Fund’s commencement of operations through March 31, 2011, on derivative instruments, as well as the primary risk exposure associated with each.


	Build		Build America
	America		Bond
	Bond		Opportunity
Net Realized Gain (Loss) from Swaps	(NBB)	*	(NBD)	**
Risk Exposure
Interest Rate	$(11,126,000)		$(90,877)

	Build		Build America
	America		Bond
	Bond		Opportunity
Net Unrealized Appreciation (Depreciation) of Swaps	(NBB)	*	(NBD)	**
Risk Exposure
Interest Rate	$11,357,053		$152,917

*	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
**	For the period November 23, 2010 (commencement of operations) through March 31, 2011.

4. Fund Shares

Since the inception of Build America Bond’s (NBB) repurchase program, the Fund has not repurchased any of its outstanding shares. As of March 31, 2011, Build America Bond Opportunity (NBD) is not authorized to repurchase its outstanding shares.


Transactions in shares were as follows:
	Build		Build America
	America		Bond
	Bond		Opportunity
	(NBB)	*	(NBD)	**
Shares sold	26,362,500		7,200,000
Shares issued to shareholders
due to reinvestment of distributions	94,235		—

*	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
**	For the period November 23, 2010 (commencement of operations) through March 31, 2011.

5. Investment Transactions

Purchases and sales (including maturities but excluding short-term investments and derivative transactions, when applicable) during the period from each Fund’s commencement of operations through March 31, 2011, were as follows:


	Build		Build America
	America		Bond
	Bond		Opportunity
	(NBB)	*	(NBD)	**
Purchases	$1,120,458,403		$249,936,782
Sales and maturities	567,409,551		108,305,215

*	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
**	For the period November 23, 2010 (commencement of operations) through March 31, 2011.

Nuveen Investments 37

Notes to

Financial Statements (continued)

6. 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 as detailed below. Temporary differences do not require reclassification. Temporary and permanent differences do not impact the net asset values of the Funds.

At March 31, 2011, the cost and unrealized appreciation (depreciation) of investments (excluding investments in derivatives), as determined on a federal income tax basis, were as follows:


	Build			Build America
	America			Bond
	Bond			Opportunity
	(NBB)			(NBD)
Cost of investments	$	537,222,377		$	133,754,456
Gross unrealized:
Appreciation		4,479,345			4,431,347
Depreciation		(19,232,419	)		(1,781,688	)
Net unrealized appreciation (depreciation) of investments	$	(14,753,074	)	$	2,649,659

Permanent differences, primarily due to federal taxes paid and notional principal contracts reclassifications, resulted in reclassifications among the Funds’ components of net assets at March 31, 2011, the Funds’ tax year end, as follows:


	Build			Build America
	America			Bond
	Bond			Opportunity
	(NBB)			(NBD)
Paid-in surplus	$	—		$	—
Undistributed (Over-distribution of) net investment income		24,823			(90,602	)
Accumulated net realized gain (loss)		(24,823	)		90,602

The tax components of undistributed net ordinary income and net long-term capital gains at March 31, 2011, the Funds’ tax year end, were as follows:


	Build		Build America
	America		Bond
	Bond		Opportunity
	(NBB)		(NBD)
Undistributed net ordinary income*	$	3,801,173	$	1,443,627
Undistributed net long-term capital gains		—		—

*	Net ordinary income consists of net taxable income derived from dividends, interest and net short-term capital gains, if any. Undistributed net ordinary income (on a tax basis) has not been reduced for the dividend declared on March 1, 2011, and paid on April 1, 2011.

The tax character of distributions paid during the period from each Fund’s commencement of operations through March 31, 2011, was designated for purposes of the dividends paid deduction as follows:


	Build			Build America
	America			Bond
	Bond			Opportunity
	(NBB)		**	(NBD)		***
Distributions from net ordinary income*	$	27,698,457		$	1,815,723
Distributions from net long-term capital gains		—			—

*	Net ordinary income consists of net taxable income derived from dividends, interest, and net short-term capital gains, if any.
**	For the period April 27, 2010 (commencement of operations) through March 31, 2011.
***	For the period November 23, 2010 (commencement of operations) through March 31, 2011.

38	Nuveen Investments

At March 31, 2011, the Funds’ tax year end, the following Fund had unused capital loss carryforwards available for federal income tax purposes to be applied against future capital gains, if any. If not applied, the carryforwards will expire as follows:


	Build
	America
	Bond
	(NBB)
Expiration:
March 31, 2019	$ 294,209

The Funds have elected to defer net realized losses from investments incurred from November 1, 2010 through March 31, 2011, the Funds’ tax year end, (“post-October losses”) in accordance with federal income tax regulations. Post-October losses are treated as having arisen on the first day of the following fiscal year. The Funds have elected to defer post-October losses as follows:


	Build	Build America
	America	Bond
	Bond	Opportunity
	(NBB)	(NBD)
Post-October capital losses	$2,435,461	$712,290

7. Management Fees and Other Transactions with Affiliates

Each Fund’s management fee consists of two components – a fund-level fee, based only on the amount of assets within the Fund, and a complex-level fee, based on the aggregate amount of all eligible fund assets managed by the Adviser. This pricing structure enables Fund shareholders to benefit from growth in the assets within their Fund as well as from growth in the amount of complex-wide assets managed by the Adviser.


The annual fund-level fee for each Fund, payable monthly, is calculated according to the following schedule:

Average Daily Managed Assets*	Fund-Level Fee Rate
For the first $125 million	.4500%
For the next $125 million	.4375
For the next $250 million	.4250
For the next $500 million	.4125
For the next $1 billion	.4000
For managed assets over $2 billion	.3875

The annual complex-level fee for each Fund, payable monthly, is calculated according to the following schedule:

Complex-Level Managed Asset Breakpoint Level*	Effective Rate at Breakpoint Level
$55 billion	.2000%
$56 billion	.1996
$57 billion	.1989
$60 billion	.1961
$63 billion	.1931
$66 billion	.1900
$71 billion	.1851
$76 billion	.1806
$80 billion	.1773
$91 billion	.1691
$125 billion	.1599
$200 billion	.1505
$250 billion	.1469
$300 billion	.1445

For the fund-level and complex-level fees, managed assets include closed-end fund assets managed by the Adviser that are attributable to financial leverage. For these purposes, financial leverage includes the funds’ use of preferred stock and borrowings and certain investments in the residual interest certificates (also called inverse floating rate securities) in tender option bond (TOB) trusts, including the portion of assets held by a TOB trust that has been effectively financed by the trust’s issuance of floating rate securities, subject to an agreement by the Adviser as to certain funds to limit the amount of such assets for determining managed assets in certain circumstances. The complex-level fee is calculated based upon the aggregate daily managed assets of all Nuveen funds that constitute “eligible assets.” Eligible assets do not include assets attributable to investments in other Nuveen funds or assets in excess of $2 billion added to the Nuveen fund complex in connection with the Adviser’s assumption of the management of the former First American Funds effective January 1, 2011. As of March 31, 2011, the complex-level fee rate for these Funds was .1800%.

Nuveen Investments 39

Notes to

Financial Statements (continued)

The management fee compensates the Adviser for overall investment advisory and administrative services and general office facilities. The Adviser has entered into Sub-Advisory Agreements with the Sub-Adviser under which the Sub-Adviser manages the investment portfolios of the Funds. The Sub-Adviser is compensated for its services to the Funds from the management fees paid to the Adviser.

The Funds pay no compensation directly to those of its trustees who are affiliated with the Adviser or to its officers, all of whom receive remuneration for their services to the Funds from the Adviser or its affiliates. The Board of Trustees has adopted a deferred compensation plan for independent trustees that enables trustees to elect to defer receipt of all or a portion of the annual compensation they are entitled to receive from certain Nuveen-advised funds. Under the plan, deferred amounts are treated as though equal dollar amounts had been invested in shares of select Nuveen-advised funds.

8. Borrowing Arrangements

As part of its investment strategies, Build America Bond (NBB) uses borrowings to employ leverage. On May 26, 2010, the Fund entered into a $125 million (maximum commitment amount) committed 364-day secured line of credit (“Committed Secured Line”) with its custodian bank. Interest charged on the borrowed amount of the Committed Secured Line is calculated at a rate per annum equal to the higher of the overnight Federal Funds rate or the overnight London Inter-bank Offered Rate (LIBOR) plus 1.00%. In addition, the Fund accrues a commitment fee of .15% per annum on the maximum commitment amount, and paid a .15% one-time closing fee on the maximum commitment amount of the Committed Secured Line which was expensed during the current reporting period.

On June 2, 2010, Build America Bond (NBB) began to draw on the Committed Secured Line. As of March 31, 2011, the Fund’s outstanding balance on the Committed Secured Line was $44,000,000, which is recognized as “Borrowings” on the Statement of Assets and Liabilities. Interest expense and commitment and closing fees incurred on the Committed Secured Line are recognized as a component of “Interest expense” on the Statement of Operations.

During the period from June 2, 2010 through March 31, 2011, the Fund’s average daily balance outstanding and average annualized interest rate on the Committed Secured Line were $73,445,446 and 1.24%, respectively.

During May 2011, the Fund entered into a new $125 million committed 364-day secured line of credit. Interest charged on this facility will be calculated based on LIBOR plus .80%. The Fund will pay a one-time closing fee of .10% on the maximum commitment amount and will accrue a commitment fee of .15% on the maximum commitment amount.

9. New Accounting Pronouncement

Financial Accounting Standards Board (“FASB”) Transfers and Servicing (Topic 860): Reconsideration of Effective Control for Repurchase Agreements.

On April 15, 2011, the FASB issued Accounting Standards Update No. 2011-03, (the “ASU”). The guidance in the ASU is intended to improve the accounting for repurchase and other similar agreements. Specifically, the ASU modifies the criteria for determining when these agreements would be accounted for as financing transactions (secured borrowings/lending agreements) as opposed to sale (purchase) transactions with commitments to repurchase (resell). At this time, management is evaluating the implications of this guidance and the impact it will have to the financial statement amounts or footnote disclosures, if any.

40 Nuveen Investments

Board Members & Officers(Unaudited)

The management of the Funds, including general supervision of the duties performed for the Funds by the Adviser, is the responsibility of the Board Members of the Funds. The number of board members of the Fund is currently set at ten. None of the board members who are not “interested” persons of the Funds (referred to herein as “independent board members”) has ever been a director or employee of, or consultant to, Nuveen or its affiliates. The names and business addresses of the board members and officers of the Funds, their principal occupations and other affiliations during the past five years, the number of portfolios each oversees and other directorships they hold are set forth below.


Name,	Position(s) Held	Year First	Principal	Number
Birthdate	with the Funds	Elected or	Occupation(s)	of Portfolios
& Address		Appointed	Including other	in Fund Complex
		and Term(1)	Directorships	Overseen by
			During Past 5 Years	Board Member

Independent Board Members:
■ ROBERT P. BREMNER(2)			Private Investor and Management Consultant; Treasurer and Director,
8/22/40	Chairman of		Humanities Council of Washington, D.C.; Board Member,
333 W. Wacker Drive	the Board	1996	Independent Directors Council affiliated with the Investment	246
Chicago, IL 60606	and Board Member		Company Institute.

■ JACK B. EVANS			President, The Hall-Perrine Foundation, a private philanthropic
10/22/48			corporation (since 1996); Director and Chairman, United Fire
333 W. Wacker Drive	Board Member	1999	Group, a publicly held company; President Pro Tem of the Board of	246
Chicago, IL 60606			Regents for the State of Iowa University System; Director, Source Media
			Group; Life Trustee of Coe College and the Iowa College Foundation;
			formerly, Director, Alliant Energy; formerly, Director, Federal
			Reserve Bank of Chicago; formerly, President and Chief Operating
			Officer, SCI Financial Group, Inc., a regional financial services firm.

■ WILLIAM C. HUNTER			Dean, Tippie College of Business, University of Iowa (since
3/6/48			2006); Director (since 2004) of Xerox Corporation; Director
333 W. Wacker Drive	Board Member	2004	(since 2005), Beta Gamma Sigma International Honor Society;	246
Chicago, IL 60606			Director of Wellmark, Inc. (since 2009); formerly, Dean and
			Distinguished Professor of Finance, School of Business at the
			University of Connecticut (2003-2006); previously, Senior Vice
			President and Director of Research at the Federal Reserve Bank
			of Chicago (1995-2003); formerly, Director (1997-2007), Credit
			Research Center at Georgetown University.

■ DAVID J. KUNDERT(2)			Director, Northwestern Mutual Wealth Management
10/28/42			Company; retired (since 2004) as Chairman, JPMorgan
333 W. Wacker Drive	Board Member	2005	Fleming Asset Management, President and CEO, Banc One	246
Chicago, IL 60606			Investment Advisors Corporation, and President, One Group
			Mutual Funds; prior thereto, Executive Vice President, Banc One
			Corporation and Chairman and CEO, Banc One Investment
			Management Group; Member, Board of Regents, Luther College;
			member of the Wisconsin Bar Association; member of Board of
			Directors, Friends of Boerner Botanical Gardens; member of Board
			of Directors and Chair of Investment Committee, Greater
			Milwaukee Foundation.

■ WILLIAM J. SCHNEIDER(2)			Chairman of Miller-Valentine Partners Ltd., a real estate investment
9/24/44			company; formerly, Senior Partner and Chief Operating Officer
333 W. Wacker Drive	Board Member	1997	(retired 2004) of Miller-Valentine Group; member, University of	246
Chicago, IL 60606			Dayton Business School Advisory Council;member, Mid-America
			Health System Board; formerly, member and chair, Dayton Philharmonic
			Orchestra Association; formerly, member, Business Advisory Council,
			Cleveland Federal Reserve Bank.

Nuveen Investments 41

Board Members & Officers (Unaudited) (continued)


Name,	Position(s) Held	Year First	Principal	Number
Birthdate	with the Funds	Elected or	Occupation(s)	of Portfolios
& Address		Appointed	Including other	in Fund Complex
		and Term(1)	Directorships	Overseen by
			During Past 5 Years	Board Member

Independent Board Members:
■ JUDITH M. STOCKDALE			Executive Director, Gaylord and Dorothy Donnelley
12/29/47			Foundation (since 1994); prior thereto, Executive Director,
333 W. Wacker Drive	Board Member	1997	Great Lakes Protection Fund (1990-1994).	246
Chicago, IL 60606

■ CAROLE E. STONE(2)			Director, Chicago Board Options Exchange (since 2006); Director,
6/28/47			C2 Options Exchange, Incorporated (since 2009); formerly,
333 W. Wacker Drive	Board Member	2007	Commissioner, New York State Commission on Public Authority	246
Chicago, IL 60606			Reform (2005-2010); formerly, Chair, New York Racing Association
			Oversight Board (2005-2007).

■ VIRGINIA L. STRINGER			Board Member, Mutual Fund Directors Forum; Member, Governing
8/16/44			Board, Investment Company Institute’s Independent Directors
333 W. Wacker Drive	Board Member	2011	Council; governance consultant and non-profit board member;	246
Chicago, IL 60606			former Owner and President, Strategic Management Resources, Inc.
			a management consulting firm; previously, held several executive
			positions in general management, marketing and human resources at
			IBM and The Pillsbury Company; Independent Director, First American
			Fund Complex (1987-2010) and Chair (1997-2010).
■ TERENCE J. TOTH(2)
9/29/59			Director, Legal & General Investment Management America, Inc.
333 W. Wacker Drive	Board Member	2008	(since 2008); Managing Partner, Promus Capital (since 2008);	246
Chicago, IL 60606			formerly, CEO and President, Northern Trust Global Investments
			(2004-2007); Executive Vice President, Quantitative Management
			& Securities Lending (2000-2004); prior thereto, various positions
			with Northern Trust Company (since 1994); member: Goodman
			Theatre Board (since 2004), Chicago Fellowship Board (since
			2005), and Catalyst Schools of Chicago Board (since 2008); formerly,
			member: Northern Trust Mutual Funds Board (2005-2007),
			Northern Trust Global Investments Board (2004-2007), Northern
			Trust Japan Board (2004-2007), Northern Trust Securities Inc.
			Board (2003-2007) and Northern Trust Hong Kong Board
			(1997-2004).
Interested Board Member:
■ JOHN P. AMBOIAN(3)			Chief Executive Officer and Chairman (since 2007), and Director (since
6/14/61			1999) of Nuveen Investments, Inc., formerly, President (1999-2007);
333 W. Wacker Drive	Board Member	2008	Chief Executive Officer (since 2007) of Nuveen Investments Advisors,	246
Chicago, IL 60606			Inc.; Director (since 1998) formerly, Chief Executive Officer (2007-2010)
			of Nuveen Fund Advisors, Inc.

42 Nuveen Investments


Name,	Position(s) Held	Year First	Principal	Number
Birthdate	with the Funds	Elected or	Occupation(s)	of Portfolios
and Address		Appointed(4)	During Past 5 Years	in Fund Complex
				Overseen
				by Officer

Officers of the Funds:
■ GIFFORD R. ZIMMERMAN			Managing Director (since 2002), Assistant Secretary and Associate
9/9/56	Chief		General Counsel of Nuveen Securities, LLC; Managing Director
333 W. Wacker Drive	Administrative	1988	(since 2004) and Assistant Secretary (since 1994) of Nuveen	246
Chicago, IL 60606	Officer		Investments, Inc.; Managing Director (since 2002), Assistant
			Secretary (since 1997) and Co-General Counsel (since 2011) of Nuveen
			Fund Advisors, Inc.; Managing Director, Assistant Secretary and Associate
			General Counsel of Nuveen Asset Management, LLC (since 2011);
			Managing Director, Associate General Counsel and Assistant Secretary
			of Symphony Asset Management LLC (since 2003); Vice President and
			Assistant Secretary of NWQ Investment Management Company, LLC
			(since 2002), Nuveen Investments Advisers Inc. (since 2002), Tradewinds
			Global Investors LLC, and Santa Barbara Asset Management, LLC
			(since 2006), Nuveen HydePark Group LLC and Nuveen Investment
			Solutions, Inc. (since 2007) and of Winslow Capital Management Inc.
			(since 2010); Chief Administrative Officer and Chief Compliance Officer
			(since 2010) of Nuveen Commodities Asset Management, LLC;
			Chartered Financial Analyst.

■ WILLIAM ADAMS IV			Senior Executive Vice President, Global Structured Products (since 2010),
6/9/55			formerly, Executive Vice President (1999-2010) of Nuveen Securities,
333 W. Wacker Drive	Vice President	2007	LLC; Co-President of Nuveen Fund Advisors, Inc. (since 2011); Managing	132
Chicago, IL 60606			Director (since 2010) of Nuveen Commodities Asset Management, LLC.

■ CEDRIC H. ANTOSIEWICZ			Managing Director of Nuveen Securities, LLC.
1/11/62
333 W. Wacker Drive	Vice President	2007		132
Chicago, IL 60606

■ MARGO L. COOK			Executive Vice President (since 2008) of Nuveen Investments, Inc.
4/11/64			and of Nuveen Fund Advisors, Inc. (since 2011); previously, Head of
333 W. Wacker Drive	Vice President	2009	Institutional Asset Management (2007-2008) of Bear Stearns Asset	246
Chicago, IL 60606			Management; Head of Institutional Asset Management (1986-2007) of
			Bank of NY Mellon; Chartered Financial Analyst.

■ LORNA C. FERGUSON			Managing Director (since 2004) of Nuveen Securities, LLC and
10/24/45			Managing Director (since 2005) of Nuveen Fund Advisors, Inc.
333 W. Wacker Drive	Vice President	1998		246
Chicago, IL 60606

■ STEPHEN D. FOY			Senior Vice President (since 2010), formerly, Vice President (1993-
5/31/54	Vice President		2010) and Funds Controller (since 1998) of Nuveen Securities,
333 W. Wacker Drive	and Controller	1998	LLC; Senior Vice President (since 2010), formerly, Vice President	246
Chicago, IL 60606			(2005-2010) of Nuveen Fund Advisors, Inc.; Certified Public Accountant.

Nuveen Investments 43

Board Members & Officers (Unaudited) (continued)


Name,	Position(s) Held	Year First	Principal	Number
Birthdate	with the Funds	Elected or	Occupation(s)	of Portfolios
and Address		Appointed(4)	During Past 5 Years	in Fund Complex
				Overseen
				by Officer

Officers of the Funds:
■ SCOTT S. GRACE			Managing Director, Corporate Finance & Development, Treasurer
8/20/70	Vice President		(since 2009) of Nuveen Securities, LLC; Managing Director and Treasurer
333 W. Wacker Drive	and Treasurer	2009	(since 2009) of Nuveen Fund Advisors, Inc., Nuveen Investment	246
Chicago, IL 60606			Solutions, Inc., Nuveen Investments Advisers, Inc., Nuveen Investments
			Holdings Inc. and (since (2011) Nuveen Asset Management, LLC; Vice
			President and Treasurer of NWQ Investment Management Company, LLC,
			Tradewinds Global Investors, LLC, Symphony Asset Management LLC and
			Winslow Capital Management, Inc.; Vice President of Santa Barbara Asset
			Management, LLC; formerly, Treasurer (2006-2009), Senior Vice President
			(2008-2009), previously, Vice President (2006-2008) of Janus Capital
			Group, Inc.; formerly, Senior Associate in Morgan Stanley’s Global Financial
			Services Group (2000-2003); Chartered Accountant Designation.

■ WALTER M. KELLY			Senior Vice President (since 2008), Vice President (2006-2008)
2/24/70	Chief Compliance		of Nuveen Securities, LLC; Senior Vice President (since 2008)
333 W. Wacker Drive	Officer and	2003	and Assistant Secretary (since 2008) of Nuveen Fund Advisors, Inc.	246
Chicago, IL 60606	Vice President

■ TINA M. LAZAR			Senior Vice President (since 2009), formerly, Vice President of Nuveen
8/27/61			Securities, LLC (1999-2009); Senior Vice President (since 2010),
333 W. Wacker Drive	Vice President	2002	formerly, Vice President (2005-2010) of Nuveen Fund Advisors, Inc.	246
Chicago, IL 60606

■ LARRY W. MARTIN			Senior Vice President (since 2010), formerly, Vice President
7/27/51	Vice President and		(1993-2010), Assistant Secretary and Assistant General Counsel
333 W. Wacker Drive	Assistant Secretary	1997	of Nuveen Securities, LLC; Senior Vice President (since 2011) of	246
Chicago, IL 60606			Nuveen Asset Management, LLC: Senior Vice President (since 2010),
			formerly, Vice President (2005-2010), and Assistant Secretary of
			Nuveen Investments, Inc.; Senior Vice President (since 2010), formerly
			Vice President (2005-2010), and Assistant Secretary (since 1997) of
			Nuveen Fund Advisors, Inc.; Vice President and Assistant Secretary of Nuveen
			Investments Advisers, Inc. (since 2002), NWQ Investment Management
			Company, LLC, Symphony Asset Management LLC (since 2003),
			Tradewinds Global Investors, LLC, Santa Barbara Asset Management,
			LLC (since 2006), Nuveen HydePark Group, LLC and Nuveen Investment
			Solutions, Inc. (since 2007); and of Winslow Capital Management, Inc.
			(since 2010); Vice President and Assistant Secretary of Nuveen Commodities
			Asset Management, LLC (since 2010).

■ KEVIN J. MCCARTHY			Managing Director (since 2008), formerly, Vice President (2007-2008),
3/26/66	Vice President		Nuveen Securities, LLC; Managing Director (since 2008), Assistant
333 W. Wacker Drive	and Secretary	2007	Secretary (since 2007) and Co-General Counsel (since 2011)	246
Chicago, IL 60606			of Nuveen Fund Advisors, Inc.; Managing Director, Assistant Secretary
			and Associate General Counsel (since 2011) of Nuveen Asset
			Management, LLC; Managing Director (since 2008), and Assistant
			Secretary, Nuveen Investment Holdings, Inc.; Vice President
			(since 2007) and Assistant Secretary of Nuveen Investments Advisers
			Inc., NWQ Investment Management Company, LLC, Tradewinds
			Global Investors LLC, NWQ Holdings, LLC, Symphony Asset Management
			LLC, Santa Barbara Asset Management, LLC, Nuveen HydePark
			Group, LLC, Nuveen Investment Solutions, Inc. (since 2007) and
			of Winslow Capital Management, Inc. (since 2010); Vice President
			and Secretary (since 2010) of Nuveen Commodities Asset Management,
			LLC; prior thereto, Partner, Bell, Boyd & Lloyd LLP (1997-2007).

44 Nuveen Investments


Name,	Position(s) Held	Year First	Principal	Number
Birthdate	with the Funds	Elected or	Occupation(s)	of Portfolios
and Address		Appointed(4)	During Past 5 Years	in Fund Complex
				Overseen
				by Officer

Officers of the Funds:
■ KATHLEEN L. PRUDHOMME			Managing Director, Assistant Secretary and Co-General Counsel (since 2011)
3/30/53	Vice President and		of Nuveen Fund Advisors, Inc.; Managing Director, Assistant Secretary and
800 Nicollet Mall	Assistant Secretary	2011	Associate General Counsel (since 2011) of Nuveen Asset Management, LLC;	246
Minneapolis, MN 55402			Managing Director and Assistant Secretary (since 2011) of Nuveen
			Securities, LLC; formerly, Secretary of FASF (2004-2010); Deputy General
			Counsel, FAF Advisors, Inc. (2004-2010).

(1)	Board Members serve three year terms. The Board of Trustees is divided into three classes, Class I, Class II, and Class III, with each being elected to serve until the third succeeding annual shareholders’ meeting subsequent to its election or thereafter in each case when its respective successors are duly elected or appointed. The first year elected or appointed represents the year in which the board member was first elected or appointed to any fund in the Nuveen Complex.
(2)	Also serves as a trustee of the Nuveen Diversified Commodity Fund, an exchange-traded commodity pool managed by Nuveen Commodities Asset Management, LLC, an affiliate of the Adviser.
(3)	Mr. Amboian is an interested trustee because of his position with Nuveen Investments, Inc. and certain of its subsidiaries, which are affiliates of the Nuveen Funds.
(4)	Officers serve one year terms through August of each year. The year first elected or appointed represents the year in which the Officer was first elected or appointed to any fund in the Nuveen Complex.

Nuveen Investments 45

Annual Investment Management

Agreement Approval Process (Unaudited)

The Boards of Trustees (each, a “Board,” and each Trustee, a “Board Member”) of the Nuveen Build America Bond Fund (the “Build America Bond Fund”) and the Nuveen Build America Bond Opportunity Fund (the “Build America Bond Opportunity Fund” and, together with the Build America Bond Fund, the “Funds”) are responsible for approving advisory arrangements for the respective Fund. At a meeting held on February 26-28, 2010 (the “February Meeting”), the Board of the Build America Bond Fund was asked to approve the advisory arrangement for that Fund and, at a meeting held on September 15, 2010 (the “September Meeting”; the February Meeting and the September Meeting are each a “Meeting”), the Board of the Build America Bond Opportunity Fund was asked to approve the advisory arrangement for that Fund. At the respective Meeting, the Board Members, including the Board Members who are not parties to the advisory agreement or “interested persons” of any such parties (the “Independent Board Members”), considered and approved the investment management agreement (each, an “Advisory Agreement”) between the respective Fund and Nuveen Asset Management (the “Adviser”).

To assist the Board in its evaluation of the applicable Advisory Agreement at the respective Meeting, the Independent Board Members had received, in adequate time in advance of the Meeting or at prior meetings, materials which outlined, among other things:

·	the nature, extent and quality of services expected to be provided by the Adviser;

·	the organization of the Adviser, including the responsibilities of various depart- ments and key personnel;

·	the expertise and background of the Adviser with respect to the Fund’s invest- ment strategy;

·	the profitability of Nuveen Investments, Inc. (“Nuveen”) (which incorporated Nuveen’s wholly-owned affiliated sub-advisers);

·	the proposed management fees of the Adviser, including comparisons of such fees with the management fees of comparable funds;

·	the expected expenses of the Fund, including comparisons of the Fund’s expected expense ratio with the expense ratios of comparable funds; and

·	the soft dollar practices of the Adviser, if any.

46 Nuveen Investments

At each Meeting, the Adviser made a presentation to and responded to questions from the Board. During each Meeting, the Independent Board Members also met privately with their legal counsel to review the Board’s duties under the Investment Company Act of 1940 (the “1940 Act”), the general principles of state law in reviewing and approving advisory contracts, the standards used by courts in determining whether investment company boards of directors have fulfilled their duties, factors to be considered in voting on advisory contracts and an adviser’s fiduciary duty with respect to advisory agreements and compensation. It is with this background that the Independent Board Members considered the Advisory Agreements. As outlined in more detail below (set forth in Section I for the Build America Bond Fund and in Section II for the Build America Bond Opportunity Fund), the Independent Board Members considered all factors they believed relevant with respect to the respective Fund including the following: (a) the nature, extent and quality of the services to be provided by the Adviser; (b) investment performance, as described below; (c) the profitability of Nuveen and its affiliates; (d) the extent to which economies of scale would be realized; and (e) whether fee levels reflect these economies of scale for the benefit of Fund investors.

I. NUVEEN BUILD AMERICA BOND FUND

A. Nature, Extent and Quality of Services

With respect to the Build America Bond Fund (for purposes of this Section I, such Fund is the “Fund” and the Advisory Agreement for such Fund is the “Advisory Agreement”), the Independent Board Members considered the nature, extent and quality of the Adviser’s services, including advisory services and administrative services. As the Adviser already serves as adviser to other Nuveen funds overseen by the Board Members, the Board has a good understanding of the Adviser’s organization, operations and personnel. As the Independent Board Members meet regularly throughout the year to oversee the Nuveen funds, including funds currently advised by the Adviser, the Independent Board Members have relied upon their knowledge from their meetings and any other interactions throughout the year of the Adviser and its services in evaluating the Advisory Agreement.

At the February Meeting and at prior meetings, the Independent Board Members reviewed materials outlining, among other things, the Adviser’s organization and business; the types of services that the Adviser or its affiliates provide to the Nuveen funds and are expected to provide to the Fund; and the experience of the Adviser with applicable investment strategies. Further, the Independent Board Members have evaluated the background, experience and track record of the Adviser’s investment personnel.

Nuveen Investments 47

Annual Investment Management Agreement

Approval Process (Unaudited) (continued)

a wide range of services, including, among other things, product management, fund administration, oversight of service providers, shareholder services, administration of Board relations, regulatory and portfolio compliance and legal support.

In addition to the foregoing services, the Independent Board Members also noted the additional services that the Adviser or its affiliates provide to closed-end funds, including, in particular, Nuveen’s continued commitment to supporting the secondary market for the common shares of its closed-end funds through a variety of programs designed to raise investor and analyst awareness and understanding of closed-end funds. These efforts include maintaining an investor relations program to provide timely information and education to financial advisers and investors; providing advertising and marketing for the closed-end funds; maintaining websites; and providing educational seminars.

Based on their review, the Independent Board Members found that, overall, the nature, extent and quality of services expected to be provided to the Fund under the Advisory Agreement were satisfactory.

B. Investment Performance

At the time of the February Meeting, the Fund was new and therefore did not have its own performance history. However, the Independent Board Members were familiar with the Adviser’s performance record on other Nuveen funds.

C. Fees, Expenses and Profitability

1. Fees and Expenses

In evaluating the management fees and expenses that the Fund was expected to bear, the Independent Board Members considered, among other things, the Fund’s proposed management fee structure and its expected expense ratios in absolute terms as well as compared with the fees and expense ratios of comparable funds. In this regard, the Board reviewed, among other things, the management fees of leveraged municipal closed-end funds given that the Fund’s portfolio was expected to be similar in many respects to that of a tax-exempt bond fund. In addition, the Board reviewed the management fees of various general taxable bond funds.

In addition, the Independent Board Members noted that the Fund may make investments in certain instruments that have the economic effect of leverage, including inverse floating rate securities. The Independent Board Members recognized that assets attributable to the Fund’s use of effective leverage would be included in the amount of assets upon which the advisory fee is calculated. In this regard, the Independent Board Members noted that the advisory fee is based on a percentage of average daily “Managed Assets.” “Managed Assets” generally means the total assets of the Fund minus the sum of its accrued liabilities (other than Fund liabilities incurred for the express purpose of creating effective leverage). “Total assets” for this purpose includes assets attributable to the Fund’s use of effective leverage (whether or not those assets are reflected in the Fund’s financial statements for purposes of generally accepted accounting principles), such as, but not limited to,

48 Nuveen Investments

the portion of assets in special purpose trusts of which the Fund owns the inverse floater certificates that has been effectively financed by the trust’s issuance of floating rate certificates. The Board Members recognized that because a decision to increase the Fund’s leverage would have the effect, all other things being equal, of increasing Managed Assets, and, therefore, the Adviser’s management fee, the Adviser may have an incentive to increase the Fund’s use of leverage. Notwithstanding the foregoing, the Independent Board Members considered that the Adviser would seek to manage that incentive by only increasing the Fund’s use of leverage when it determines that such increase is consistent with the Fund’s investment objectives, and by periodically reviewing the Fund’s performance and use of leverage with the Board.

The Independent Board Members also considered the fund-level breakpoint schedule and the complex-wide breakpoint schedule (described in further detail below) and any applicable fee waivers and expense reimbursements expected to be provided. Based on their review of the fee and expense information provided, the Independent Board Members determined that the Fund’s management fees were reasonable in light of the nature, extent and quality of services to be provided to the Fund.

2. Comparisons with the Fees of Other Clients

Due to their experience with other Nuveen funds, the Board Members were familiar with the fees the Adviser assesses to other clients. Such other clients include separately managed accounts (both retail and institutional accounts) and funds that are not offered by Nuveen but are sub-advised by one of Nuveen’s investment management teams. In evaluating the comparisons of fees, the Independent Board Members have noted, at the February Meeting or at prior meetings, that the fee rates charged to a fund (such as the Fund) and charged to other clients vary, among other things, because of the different services involved and the additional regulatory and compliance requirements associated with registered investment companies, such as the Fund. Accordingly, the Independent Board Members have considered the differences in the product types, including, but not limited to, the services to be provided, the structure and operations, product distribution and costs thereof, portfolio investment policies, investor profiles, account sizes and regulatory requirements. The Independent Board Members have noted, in particular, that the range of services as described above to be provided to a fund (such as the Fund) is much more extensive than that provided to separately managed accounts. Given the inherent differences in the products, particularly the extensive services to be provided to the Fund, the Independent Board Members believe such facts justify the different levels of fees.

3. Profitability of Nuveen

Nuveen Investments 49

Annual Investment Management Agreement

Approval Process (Unaudited) (continued)

condition. At the February Meeting or prior meetings, the Independent Board Members reviewed the revenues and expenses of Nuveen’s advisory activities, the allocation methodology used in preparing the profitability data and an analysis of the key drivers behind the changes in revenues and expenses that impacted profitability. They also reviewed the Form 8-K filed by Nuveen on January 12, 2010 and the Form 10-Q filed by Nuveen on November 12, 2009 (for the period ending September 30, 2009). The Independent Board Members have also considered, at the February Meeting or at prior meetings, Nuveen’s revenues for advisory activities, expenses, and profit margin compared to that of various unaffiliated management firms with similar amounts of assets under management and relatively comparable asset composition prepared by Nuveen.

In reviewing profitability, the Independent Board Members have recognized the subjective nature of determining profitability, which may be affected by numerous factors, including the allocation of expenses. Further, the Independent Board Members have recognized the difficulties in making comparisons as the profitability of other advisers generally is not publicly available and the profitability information that is available for certain advisers or management firms may not be representative of the industry and may be affected by, among other things, the adviser’s particular business mix, capital costs, types of funds managed and expense allocations. Notwithstanding the foregoing, the Independent Board Members reviewed Nuveen’s methodology and assumptions for allocating expenses across product lines to determine profitability. In reviewing profitability, the Independent Board Members recognized Nuveen’s investment in its fund business. Based on their review, the Independent Board Members concluded that Nuveen’s level of profitability for its advisory activities was reasonable in light of the services to be provided.

In evaluating the reasonableness of the compensation, the Independent Board Members also considered any other amounts expected to be paid to the Adviser as well as any indirect benefits (such as soft dollar arrangements, if any) the Adviser and its affiliates are expected to receive that are directly attributable to their management of the Fund, if any. See Section E below for additional information on indirect benefits the Adviser may receive as a result of its relationship with the Fund. Based on their review of the overall fee arrangements of the Fund, the Independent Board Members determined that the advisory fees and expected expenses of the Fund were reasonable.

D. Economies of Scale and Whether Fee Levels Reflect These Economies of Scale

50	Nuveen Investments

method to help ensure that shareholders share in these benefits is to include breakpoints in the advisory fee schedule. Generally, management fees for funds in the Nuveen complex are comprised of a fund-level component and a complex-level component. Accordingly, the Independent Board Members received and reviewed the schedule of proposed advisory fees for the Fund, including fund-level breakpoints thereto. In this regard, however, given that the Fund is a closed-end fund, the Independent Board Members recognized that although the Fund may from time to time make additional share offerings, the growth in its assets will occur primarily through appreciation of its investment portfolio.

In addition to fund-level advisory fee breakpoints, the Board also considered the Fund’s complex-wide fee arrangement. Pursuant to the complex-wide fee arrangement, the fees of the funds in the Nuveen complex, including the Fund, are generally reduced as the assets in the fund complex reach certain levels. In evaluating the complex-wide fee arrangement, the Independent Board Members have considered that the complex-wide fee arrangement seeks to provide the benefits of economies of scale to fund shareholders when total fund complex assets increase, even if assets of a particular fund are unchanged or have decreased. The approach reflects the notion that some of Nuveen’s costs are attributable to services provided to all its funds in the complex and therefore all funds benefit if these costs are spread over a larger asset base. Based on their review, the Independent Board Members concluded that the breakpoint schedules and complex-wide fee arrangement were acceptable and reflect economies of scale to be shared with the Fund’s shareholders.

E. Indirect Benefits

In evaluating fees, the Independent Board Members also considered information regarding potential “fall out” or ancillary benefits that the Adviser or its affiliates may receive as a result of its relationship with the Fund. In this regard, the Independent Board Members considered any revenues received by affiliates of the Adviser for serving as agent at Nuveen’s trading desk.

In addition to the above, the Independent Board Members considered whether the Adviser will receive any benefits from soft dollar arrangements whereby a portion of the commissions paid by the Fund for brokerage may be used to acquire research that may be useful to the Adviser in managing the assets of the Fund and other clients. The Independent Board Members noted that the Adviser does not currently have any soft dollar arrangements; however, to the extent certain bona fide agency transactions that occur on markets that traditionally trade on a principal basis and riskless principal transactions are considered as generating “commissions,” the Adviser intends to comply with the applicable safe harbor provisions.

Based on their review, the Independent Board Members concluded that any indirect benefits received by the Adviser as a result of its relationship with the Fund were reasonable and within acceptable parameters.

Nuveen Investments 51

Annual Investment Management Agreement

Approval Process (Unaudited) (continued)

F. Approval

The Independent Board Members did not identify any single factor discussed previously as all-important or controlling. The Board Members, including a majority of the Independent Board Members, concluded that the terms of the Advisory Agreement were fair and reasonable, that the Adviser’s fees are reasonable in light of the services to be provided to the Fund and that the Advisory Agreement should be and was approved on behalf of the Fund.

II. NUVEEN BUILD AMERICA BOND OPPORTUNITY FUND

A. Nature, Extent and Quality of Services

With respect to the Build America Bond Opportunity Fund (for purposes of this Section II, such Fund is the “Fund” and the Advisory Agreement for such Fund is the “Advisory Agreement”), the Independent Board Members considered the nature, extent and quality of the Adviser’s services, including advisory services and administrative services. As the Adviser already serves as adviser to other Nuveen funds overseen by the Board Members, the Board has a good understanding of the Adviser’s organization, operations and personnel. As the Independent Board Members meet regularly throughout the year to oversee the Nuveen funds, including funds currently advised by the Adviser, the Independent Board Members have relied upon their knowledge from their meetings and any other interactions throughout the year of the Adviser and its services in evaluating the Advisory Agreement.

At the September Meeting and at prior meetings, the Independent Board Members reviewed materials outlining, among other things, the Adviser’s organization and business; the types of services that the Adviser or its affiliates provide to the Nuveen funds and are expected to provide to the Fund; and the experience of the Adviser with applicable investment strategies. Further, the Independent Board Members have evaluated the background, experience and track record of the Adviser’s investment personnel.

In addition to advisory services, the Independent Board Members considered the quality of any administrative or non-advisory services to be provided. In this regard, the Adviser is expected to provide the Fund with such administrative and other services (exclusive of, and in addition to, any such services provided by others for the Fund) and officers and other personnel as are necessary for the operations of the Fund. In addition to investment management services, the Adviser and its affiliates will provide the Fund with a wide range of services, including, among other things, product management, fund administration, oversight of service providers, shareholder services, administration of Board relations, regulatory and portfolio compliance and legal support.

52 Nuveen Investments

efforts include maintaining an investor relations program to provide timely information and education to financial advisers and investors; providing advertising and marketing for the closed-end funds; maintaining websites; and providing educational seminars.

B. Investment Performance

At the time of the September Meeting, the Fund was new and therefore did not have its own performance history. The Independent Board Members, however, were familiar with the Adviser’s performance record on other Nuveen funds. Although the Adviser acts as adviser to another similar fund (the Build America Bond Fund), such fund had been trading for less than six months and, therefore, did not have an extensive performance history.

C. Fees, Expenses and Profitability

1. Fees and Expenses

In evaluating the management fees and expenses that the Fund was expected to bear, the Independent Board Members considered, among other things, the Fund’s proposed management fee structure and its expected expense ratios in absolute terms as well as compared with the fees and expense ratios of comparable funds. In this regard, the Board reviewed the management fees of various general taxable bond funds, recognizing that the Build America Bond Fund (which, as indicated above, is similar to the Fund) is classified in that category. The Board noted the Adviser’s proposal that the management fees for the Fund be the same as the fee schedule which applies to the Build America Bond Fund and Nuveen’s tax-exempt leveraged municipal closed-end funds.

In addition, the Independent Board Members noted that the Fund may make investments in certain instruments that have the economic effect of leverage, including, but not limited to, investments in inverse floating rate securities. The Independent Board Members recognized that assets attributable to the Fund’s use of financial leverage would be included in the amount of assets upon which the advisory fee is calculated. In this regard, the Independent Board Members noted that the advisory fee is based on the sum of a fund-level fee and a complex-level fee. The fund-level fee portion is based on a percentage of the Fund’s average daily “Managed Assets.” For the Fund, “Managed Assets” generally means the total assets of the Fund, minus the sum of its accrued liabilities (other than Fund liabilities incurred for the express purpose of creating financial leverage). “Total assets” for this purpose includes assets attributable to the Fund’s use of financial leverage (whether or not those assets are reflected in the Fund’s financial statements for purposes of generally accepted accounting principles), such as, but not limited to, the portion of assets in tender option bond trusts of which the Fund owns the residual interest certificates

Nuveen Investments 53

Annual Investment Management Agreement

Approval Process (Unaudited) (continued)

that have been effectively financed by the trust’s issuance of floating rate certificates. The complex-level fee is based on the managed assets of certain funds in the Nuveen complex which generally includes assets attributable to any preferred shares that may be outstanding and any borrowings (including the issuance of commercial paper or notes) for purposes of financial leverage. The Board Members recognized that because a decision to increase the Fund’s leverage would have the effect, all other things being equal, of increasing Managed Assets, and, therefore, the Adviser’s management fee, the Adviser may have an incentive to increase the Fund’s use of leverage. Notwithstanding the foregoing, the Independent Board Members considered that the Adviser would seek to manage that incentive by only increasing the Fund’s use of leverage when it determines that such increase is consistent with the Fund’s investment objectives, and by periodically reviewing the Fund’s performance and use of leverage with the Board.

2. Comparisons with the Fees of Other Clients

Due to their experience with other Nuveen funds, the Board Members were familiar with the fees the Adviser assesses to other clients. Such other clients include separately managed accounts (both retail and institutional accounts) and funds that are not offered by Nuveen but are sub-advised by one of Nuveen’s investment management teams. In evaluating the comparisons of fees, the Independent Board Members have noted, at the September Meeting or at prior meetings, that the fee rates charged to a fund (such as the Fund) and charged to other clients vary, among other things, because of the different services involved and the additional regulatory and compliance requirements associated with registered investment companies, such as the Fund. Accordingly, the Independent Board Members have considered the differences in the product types, including, but not limited to, the services to be provided, the structure and operations, product distribution and costs thereof, portfolio investment policies, investor profiles, account sizes and regulatory requirements. The Independent Board Members have noted, in particular, that the range of services as described above to be provided to a fund (such as the Fund) is much more extensive than that provided to separately managed accounts. Given the inherent differences in the products, particularly the extensive services to be provided to the Fund, the Independent Board Members believe such facts justify the different levels of fees.

54 Nuveen Investments

3. Profitability of Nuveen

In conjunction with its review of fees at prior meetings, the Independent Board Members have considered the profitability of Nuveen for its advisory activities (which incorporated Nuveen’s wholly-owned affiliated sub-advisers) and its financial condition. At the September Meeting or prior meetings, the Independent Board Members reviewed the revenues and expenses of Nuveen’s advisory activities, the allocation methodology used in preparing the profitability data and an analysis of the key drivers behind the changes in revenues and expenses that impacted profitability. In addition, they reviewed the Form 8-K filed by Nuveen on August 13, 2010 and the Form 10-K filed by Nuveen on March 31, 2010 (for the period ending December 31, 2009). The Independent Board Members have also considered, at the September Meeting or at prior meetings, Nuveen’s revenues for advisory activities, expenses, and profit margin compared to that of various unaffiliated management firms with similar amounts of assets under management and relatively comparable asset composition prepared by Nuveen.

Nuveen Investments 55

Annual Investment Management Agreement

Approval Process (Unaudited) (continued)

D. Economies of Scale and Whether Fee Levels Reflect These Economies of Scale

With respect to economies of scale, the Independent Board Members have recognized the potential benefits resulting from the costs of a fund being spread over a larger asset base, although economies of scale are difficult to measure and predict with precision, particularly on a fund-by-fund basis. The Independent Board Members therefore considered whether the Fund could be expected to benefit from any economies of scale. One method to help ensure that shareholders share in these benefits is to include breakpoints in the advisory fee schedule. Generally, management fees for funds in the Nuveen complex are comprised of a fund-level component and a complex-level component. Accordingly, the Independent Board Members received and reviewed the schedule of proposed advisory fees for the Fund, including fund-level breakpoints thereto. In this regard, however, given that the Fund is a closed-end fund, the Independent Board Members recognized that although the Fund may from time to time make additional share offerings, the growth in its assets will occur primarily through appreciation of its investment portfolio.

E. Indirect Benefits

56 Nuveen Investments

occur on markets that traditionally trade on a principal basis and riskless principal transactions are considered as generating “commissions,” the Adviser intends to comply with the applicable safe harbor provisions.

F. Approval

Nuveen Investments 57

Board Approval of Sub-Advisory

Arrangements (Unaudited)

Since the Meetings, Nuveen has engaged in an internal restructuring (the “Restructuring”) pursuant to which the portfolio management services provided by the Adviser to the Funds were transferred to Nuveen Asset Management, LLC (“NAM LLC”), a newly-organized wholly-owned subsidiary of the Adviser and the Adviser changed its name to Nuveen Fund Advisors, Inc. (“NFA”). The Adviser, under its new name NFA, continues to serve as investment adviser to the Funds and, in that capacity, will continue to provide various oversight, administrative, compliance and other services. To effectuate the foregoing, NFA entered into sub-advisory agreements with NAM LLC on behalf of the Funds (each, a “Sub-Advisory Agreement”). Under each Sub-Advisory Agreement, NAM LLC, subject to the oversight of NFA and the Board, will furnish an investment program, make investment decisions for, and place all orders for the purchase and sale of securities for the portion of the respective Fund’s investment portfolio allocated to it by NFA. There have been no changes to the advisory fees paid by the Funds; rather, NFA will pay a portion of the investment advisory fee it receives to NAM LLC for its sub-advisory services. The Independent Board Members reviewed the allocation of fees between NFA and NAM LLC. NFA and NAM LLC do not anticipate any reduction in the nature or level of services provided to the Funds following the Restructuring. The personnel of NFA who engaged in portfolio management activities prior to the spinoff of NAM LLC are not expected to materially change as a result of the spinoff. In light of the foregoing, at a meeting held on November 16-18, 2010, the Board Members, including a majority of the Independent Board Members, approved the Sub-Advisory Agreements on behalf of the Funds. Given that the Restructuring was not expected to reduce the level or nature of services provided and the advisory fees paid by the Funds were the same, the factors considered and determinations made at the applicable Meeting in approving the respective Advisory Agreements were equally applicable to the approval of the Sub-Advisory Agreements.

58 Nuveen Investments

Reinvest Automatically,

Easily and Conveniently

Nuveen makes reinvesting easy. A phone call is all it takes to set up your reinvestment account.

Nuveen Closed-End Funds Automatic Reinvestment Plan

Your Nuveen Closed-End Fund allows you to conveniently reinvest distributions in additional Fund shares.

By choosing to reinvest, you’ll be able to invest money regularly and automatically, and watch your investment grow through the power of compounding. Just like distributions in cash, there may be times when income or capital gains taxes may be payable on distributions that are reinvested.

It is important to note that an automatic reinvestment plan does not ensure a profit, nor does it protect you against loss in a declining market.

Easy and convenient

To make recordkeeping easy and convenient, each month you’ll receive a statement showing your total distributions, the date of investment, the shares acquired and the price per share, and the total number of shares you own.

How shares are purchased

The shares you acquire by reinvesting will either be purchased on the open market or newly issued by the Fund. If the shares are trading at or above net asset value at the time of valuation, the Fund will issue new shares at the greater of the net asset value or 95% of the then-current market price. If the shares are trading at less than net asset value, shares for your account will be purchased on the open market. If the Plan Agent begins purchasing Fund shares on the open market while shares are trading below net asset value, but the Fund’s shares subsequently trade at or above their net asset value before the Plan Agent is able to complete its purchases, the Plan Agent may cease open-market purchases and may invest the uninvested portion of the distribution in newly-issued Fund shares at a price equal to the greater of the shares’ net asset value or 95% of the shares’ market value on the last business day immediately prior to the purchase date. Distributions received to purchase shares in the open market will normally be invested shortly after the distribution payment date. No interest will be paid on distributions awaiting reinvestment. Because the market price of the shares may increase before purchases are completed, the average purchase price per share may

Nuveen Investments 59

Reinvest Automatically,

Easily and Conveniently (continued)

exceed the market price at the time of valuation, resulting in the acquisition of fewer shares than if the distribution had been paid in shares issued by the Fund. A pro rata portion of any applicable brokerage commissions on open market purchases will be paid by Plan participants. These commissions usually will be lower than those charged on individual transactions.

Flexible

You may change your distribution option or withdraw from the Plan at any time, should your needs or situation change.

You can reinvest whether your shares are registered in your name, or in the name of a brokerage firm, bank, or other nominee. Ask your investment advisor if his or her firm will participate on your behalf. Participants whose shares are registered in the name of one firm may not be able to transfer the shares to another firm and continue to participate in the Plan.

The Fund reserves the right to amend or terminate the Plan at any time. Although the Fund reserves the right to amend the Plan to include a service charge payable by the participants, there is no direct service charge to participants in the Plan at this time.

Call today to start reinvesting distributions

For more information on the Nuveen Automatic Reinvestment Plan or to enroll in or withdraw from the Plan, speak with your financial advisor or call us at (800) 257-8787.

60 Nuveen Investments

Glossary of Terms

Used in this Report

■

Auction Rate Bond: An auction rate bond is a security whose interest payments are adjusted periodically through an auction process, which process typically also serves as a means for buying and selling the bond. Auctions that fail to attract enough buyers for all the shares offered for sale are deemed to have “failed,” with current holders receiving a formula-based interest rate until the next scheduled auction.

■

Average Annual Total Return: This is a commonly used method to express an investment’s performance over a particular, usually multi-year time period. It expresses the return that would have been necessary each year to equal the invest- ment’s actual cumulative performance (including change in NAV or market price and reinvested dividends and capital gains distributions, if any) over the time period being considered.

■

Average Effective Maturity: The market-value-weighted average of the effective maturity dates of the individual securities including cash. In the case of a bond that has been advance-refunded to a call date, the effective maturity is the date on which the bond is scheduled to be redeemed using the proceeds of an escrow account. In most other cases the effective maturity is the stated maturity date of the security.

■

Effective Leverage: Effective leverage is a Fund’s effective economic leverage, and includes both structural leverage and the leverage effects of certain derivative invest- ments in the Fund’s portfolio. Currently, the leverage effects of Tender Option Bond (TOB) inverse floater holdings are included in effective leverage values, in addition to any structural leverage.

■

Inverse Floaters: Inverse floating rate securities, also known as inverse floaters, are created by depositing a municipal bond, typically with a fixed interest rate, into a special purpose trust created by a broker-dealer. This trust, in turn, (a) issues floating rate certificates typically paying short-term tax-exempt interest rates to third parties in amounts equal to some fraction of the deposited bond’s par amount or market value, and (b) issues an inverse floating rate certificate (sometimes referred to as an “inverse floater”) to an investor (such as a Fund) interested in gaining investment exposure to a long-term municipal bond. The income received by the holder of the inverse floater varies inversely with the short-term rate paid to the floating rate certificates’ holders, and in most circumstances the holder of the inverse floater bears substantially all of the underlying bond’s downside investment risk. The holder of the inverse floater typi- cally also benefits disproportionately from any potential appreciation of the underlying bond’s value. Hence, an inverse floater essentially represents an investment in the underlying bond on a leveraged basis.

■	Leverage: Using borrowed money to invest in securities or other assets.

Nuveen Investments 61

Glossary of Terms

Used in this Report (continued)

■

Leverage-Adjusted Duration: Duration is a measure of the expected period over which a bond’s principal and interest will be paid, and consequently is a measure of the sensitivity of a bond’s or bond Fund’s value to changes when market interest rates change. Generally, the longer a bond’s or Fund’s duration, the more the price of the bond or Fund will change as interest rates change. Leverage-adjusted duration takes into account the leveraging process for a Fund and therefore is longer than the duration of the Fund’s portfolio of bonds.

■	Market Yield (also known as Dividend Yield or Current Yield): An investment’s current annualized dividend divided by its current market price.

■	Net Asset Value (NAV): A Fund’s NAV per common share is calculated by subtracting the liabilities of the Fund from its total assets and then dividing the remainder by the number of common shares outstanding. Fund NAVs are calculated at the end of each business day.

■

Pre-Refunding: Pre-Refunding, also known as advanced refundings or refinancings, is a procedure used by state and local governments to refinance municipal bonds to lower interest expenses. The issuer sells new bonds with a lower yield and uses the proceeds to buy U.S. Treasury securities, the interest from which is used to make payments on the higher-yielding bonds. Because of this collateral, pre-refunding generally raises a bond’s credit rating and thus its value.

■

Structural Leverage: Structural Leverage consists of preferred shares or debt issued by the fund. Both of these are part of a fund’s capital structure. Structural leverage is sometimes referred to as “’40 Act Leverage” and is subject to asset coverage limits set in the Investment Company Act of 1940.

■	Taxable-Equivalent Yield: The yield necessary from a fully taxable investment to equal, on an after-tax basis, the yield of a municipal bond investment.

■

Zero Coupon Bond: A zero coupon bond does not pay a regular interest coupon to its holders during the life of the bond. Tax-exempt income to the holder of the bond comes from accretion of the difference between the original purchase price of the bond at issuance and the par value of the bond at maturity and is effectively paid at maturity. The market prices of zero coupon bonds generally are more volatile than the market prices of bonds that pay interest periodically.

62	Nuveen Investments

Other Useful Information

Board of Trustees

John P. Amboian

Robert P. Bremner

Jack B. Evans

William C. Hunter

David J. Kundert

William J. Schneider

Judith M. Stockdale

Carole E. Stone

Virginia L. Stringer

Terence J. Toth

Fund Manager

Nuveen Fund Advisors, Inc.

333 West Wacker Drive

Chicago, IL 60606

Custodian

State Street Bank

& Trust Company

Boston, MA

Transfer Agent and Shareholder Services

State Street Bank

& Trust Company

Nuveen Funds

P.O. Box 43071

Providence, RI 02940-3071

(800) 257-8787

Legal Counsel

Chapman and Cutler LLP

Chicago, IL

Independent Registered Public Accounting Firm

Ernst & Young LLP

Chicago, IL

Nuveen Funds’ Quarterly Portfolio of Investments and Proxy Voting Information

You may obtain (i) each Fund’s quarterly portfolio of investments, (ii) information regarding how the Funds voted proxies relating to portfolio securities held during the most recent twelve-month period ended June 30, and (iii) a description of the policies and procedures that the Funds used to determine how to vote proxies relating to portfolio securities without charge, upon request, by calling Nuveen Investments toll-free at (800) 257-8787 or on Nuveen’s website at www.nuveen.com.

You may also obtain this and other Fund information directly from the Securities and Exchange Commission (SEC). The SEC may charge a copying fee for this information. Visit the SEC on-line at http://www.sec.gov or in person at the SEC’s Public Reference Room in Washington, D.C. Call the SEC at (202) 942-8090 for room hours and operation. You may also request Fund information by sending an e-mail request to publicinfo@sec.gov or by writing to the SEC’s Public References Section at 100 F Street NE, Washington, D.C. 20549.

CEO Certification Disclosure

Each Fund’s Chief Executive Officer has submitted to the New York Stock Exchange (NYSE) the annual CEO certification as required by Section 303A.12(a) of the NYSE Listed Company Manual.

Each Fund has filed with the SEC the certification of its Chief Executive Officer and Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act.

Distribution Information

The following federal income tax information is provided with respect to the Funds’ distributions paid during the taxable period ended March 31, 2011, Nuveen Build America Bond Fund (NBB) and Nuveen Build America Bond Opportunity Fund (NBD) each hereby designate approximately 100% (or the maximum amount eligible) of ordinary income distributions as Interest-Related Dividends as defined in Internal Revenue Code Section 871(k) for the taxable period ended March 31, 2011.

Share Information

Each Fund intends to repurchase shares of its own common stock in the future at such times and in such amounts as is deemed advisable. During the period covered by this report, the Funds did not repurchase any of their common shares.

Any future repurchases will be reported to shareholders in the next annual or semi-annual report.

Nuveen Investments 63

Nuveen Investments:

Serving Investors for Generations

Since 1898, financial advisors and their clients have relied on Nuveen Investments to provide dependable investment solutions through continued adherence to proven, long-term investing principles. Today, we offer a range of high quality equity and fixed-income solutions designed to be integral components of a well-diversified core portfolio.

Focused on meeting investor needs.

Nuveen Investments is a global investment management firm that seeks to help secure the long-term goals of institutions and high net worth investors as well as the consultants and financial advisors who serve them. We market our growing range of specialized investment solutions under the high-quality brands of HydePark, NWQ, Nuveen Asset Management, Santa Barbara, Symphony, Tradewinds and Winslow Capital. In total, Nuveen Investments managed approximately $206 billion of assets as of March 31, 2011.

Find out how we can help you.

To learn more about how the products and services of Nuveen Investments may be able to help you meet your financial goals, talk to your financial advisor, or call us at (800) 257-8787. Please read the information provided carefully before you invest. Investors should consider the investment objective and policies, risk considerations, charges and expenses of any investment carefully. Where applicable, be sure to obtain a prospectus, which contains this and other relevant information. To obtain a prospectus, please contact your securities representative or Nuveen Investments, 333 W. Wacker Dr., Chicago, IL 60606. Please read the prospectus carefully before you invest or send money.

Learn more about Nuveen Funds at: www.nuveen.com/cef

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It only takes a minute to sign up for e-Reports. Once enrolled, you’ll receive an e-mail as soon as your Nuveen Fund information is ready - no more waiting for delivery by regular mail. Just click on the link within the e-mail to see the report and save it on your computer if you wish.

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If you receive your Nuveen Fund distributions and statements from your financial advisor or brokerage account.

www.nuveen.com/accountaccess

If you receive your Nuveen Fund distributions and statements directly from Nuveen.

Distributed by

Nuveen Securities, LLC

333 West Wacker Drive

Chicago, IL 60606

www.nuveen.com

EAN-C-0311D

ITEM 2. CODE OF ETHICS.

	Audit Fees Billed			Audit-Related Fees			Tax Fees			All Other Fees
Fiscal Year Ended	to Fund 1			Billed to Fund 2			Billed to Fund 3			Billed to Fund 4
March 31, 2011 5	$	18,200		$	0		$	0		$	0

Percentage approved		0	%		0	%		0	%		0	%
pursuant to
pre-approval
exception

March 31, 2010		N/A			N/A			N/A			N/A

Percentage approved		0	%		0	%		0	%		0	%
pursuant to
pre-approval
exception

1 "Audit Fees" are the aggregate fees billed for professional services for the audit of the Fund's annual financial statements and services
provided in connection with statutory and regulatory filings or engagements.

2 "Audit Related Fees" are the aggregate fees billed for assurance and related services reasonably related to the performance of the
audit or review of financial statements and are not reported under "Audit Fees".

3 "Tax Fees" are the aggregate fees billed for professional services for tax advice, tax compliance, and tax planning.

4 "All Other Fees" are the aggregate fees billed for products and services for agreed upon procedures engagements performed for leveraged funds.

5 The fund commenced operations on November 23, 2010.

Fiscal Year Ended	Audit-Related Fees			Tax Fees Billed to			All Other Fees
	Billed to Adviser and			Adviser and			Billed to Adviser
	Affiliated Fund			Affiliated Fund			and Affiliated Fund
	Service Providers			Service Providers			Service Providers
March 31, 2011 1	$	0		$	0		$	0

Percentage approved		0	%		0	%		0	%
pursuant to
pre-approval
exception
March 31, 2010		N/A			N/A			N/A

Percentage approved		0	%		0	%		0	%
pursuant to
pre-approval
exception

1 The fund commenced operations on November 23, 2010.

Name	Fund
Daniel J. Close	Nuveen Build America Bond Opportunity Fund
John V. Miller	Nuveen Build America Bond Opportunity Fund

Portfolio Manager	Type of Account Managed	Number of Accounts	Assets
Daniel J. Close	Registered Investment Company	26	$ 4.82 billion
	Other Pooled Investment Vehicles	0	$0
	Other Accounts	7	$63.5 million
John V. Miller	Registered Investment Company	8	$ 6.80 billion
	Other Pooled Investment Vehicles	4	$314 million
	Other Accounts	14	$2.4 million

Name of Portfolio Manager	Fund	Dollar range of equity securities beneficially owned in Fund	Dollar range of equity securities beneficially owned in the remainder of Nuveen funds managed by NAM’s municipal investment team
Daniel J. Close	Nuveen Build America Bond Opportunity Fund	$0	$0
John V. Miller	Nuveen Build America Bond Opportunity Fund	$0	$100,001-$500,000