Important information on risk

Investment, Market, and Price Risk: Closed-end fund shares are subject to investment risk, including the possible loss of the entire principal amount that you invest. Common shares frequently trade at a discount to their NAV. At any point in time, your common shares may be worth less than you paid, even after considering the reinvestment of fund distributions.

Interest Rate Risk: Fixed-income securities such as bonds, preferred, convertible and other debt securities will decline in value if market interest rates rise.

Credit Risk: Debt or preferred securities held by the fund may fail to make dividend or interest payments when due. Investments in securities below investment grade credit quality are predominantly speculative and subject to greater volatility and risk of default. Unrated securities are evaluated by fund managers using industry data and their own analysis processes that may be similar to that of a nationally recognized rating agency; however, such internal ratings are not equivalent to a national agency credit rating. Counterparty credit risk may arise if counterparties fail to meet their obligations, should the fund hold any derivative instruments for either investment exposure or hedging purposes.

Build America Bonds Risk: BABs are a form of municipal financing, and the market is smaller, less diverse and potentially less liquid than other types of municipal securities. Since the BAB program was not extended, BABs may be less actively traded which may negatively affect fund performance and liquidity.

Leverage Risk: The fund’s use of leverage may cause higher volatility for the fund’s per share NAV, market price, and distributions. Leverage typically magnifies the total return of the fund’s portfolio, whether that return is positive or negative. Leverage is intended to increase common share net income, but there is no assurance that the fund’s leveraging strategy will be successful. Different forms of leverage, including swaps, may introduce additional credit or interest rate risk. Leverage may also increase a fund’s liquidity risk, as the fund may need to sell securities at inopportune times to stay within fund or regulatory limits.

Inverse Floater Risk: The fund invests in inverse floaters. Due to their leveraged nature, these derivative investments can greatly increase a fund’s exposure to interest rate risk and credit risk, including counter-party credit risk. In addition, investments in inverse floaters involve the risk that the fund could lose more than its original principal investment.

Tax Risk: The tax treatment of fund distributions may be affected by future changes in tax laws and regulations or their interpretation by the Internal Revenue Service or state tax authorities.

Call Risk or Prepayment Risk: Issuers may exercise their option to prepay principal earlier than scheduled, forcing the fund to reinvest in lower-yielding securities.

Illiquid Securities Risk: The fund may not be able to sell securities in its portfolio at the time or price the fund desires.

Hedging Risk: The fund may use derivative instruments for hedging purposes, but there is no assurance that the fund’s hedging strategy will be successful. Derivatives may involve a high degree of financial risk, including the risk that the loss on a derivative may be greater than the principal amount invested.

Municipal Bond Market Liquidity Risk: Inventories of municipal bonds held by brokers and dealers have decreased in recent years, either due to broker-dealer choices or to federal banking regulations, reducing their ability to make a market in these securities. This may decrease the fund’s ability to buy or sell bonds, and may increase bond price volatility and trading costs, particularly during periods of economic or market stress. As a result, the fund may be forced to sell a security at a lower price than desired, to sell other securities to raise cash, or to give up an investment opportunity, any of which could have a negative effect on performance. Large block sales could further reduce bond prices and hurt fund performance.

Shares of closed-end funds are subject to investment risks, including the possible loss of principal invested. Closed-end funds frequently trade at a discount to their net asset value (NAV).

An investment in this fund presents a number of risks and is not suitable for all investors. Investors should carefully review and consider potential risks before investing.

CFA® and Chartered Financial Analyst® are registered trademarks owned by CFA Institute.

Performance data shown represents past performance and does not predict or guarantee future results. Current performance may be higher or lower than the data shown. NAV returns are net of fund expenses, and assume reinvestment of distributions.

Nuveen Asset Management, LLC is the subadviser to the Fund and an affiliate of Nuveen, LLC.

Nuveen Securities, LLC, member FINRA and SIPC.

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