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As filed with the U.S. Securities and Exchange Commission on October 1, 2018

1933 Act File No. 333-226218

1940 Act File No. 811-22970

U.S. SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form N-2

(Check appropriate box or boxes)

Nuveen Dow 30 ^SM Dynamic Overwrite Fund

(Exact name of Registrant as Specified in Charter)

333 West Wacker Drive, Chicago, Illinois 60606

(Address of Principal Executive Offices)

(Number, Street, City, State, Zip Code)

(Registrant’s Telephone Number, including Area Code): (800) 257-8787

Gifford R. Zimmerman

Vice President and Secretary

333 West Wacker Drive

Chicago, Illinois 60606

Name and Address (Number, Street, City, State, Zip Code) of Agent for Service

Copy to:

Thomas S. Harman

Morgan, Lewis & Bockius LLP

1111 Pennsylvania Avenue NW

Washington, DC 20004

Approximate Date of Proposed Public Offering: As soon as practicable after the effective date of this Registration Statement.

If the securities being registered on this form will be offered on a delayed or continuous basis in reliance on Rule 415 under the Securities Act of 1933, other than securities offered in connection with a dividend reinvestment plan, check the following box.  ☒

It is proposed that this filing will become effective (check appropriate box)

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such dates as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

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PROSPECTUS

3.6 Million Common Shares

Nuveen Dow 30 ^SM Dynamic Overwrite Fund

Nuveen Dow 30 ^SM Dynamic Overwrite Fund (the “Fund”) is a non-diversified, closed-end management investment company. The Fund’s investment objective is to seek attractive total return with less volatility than the Dow Jones Industrial Average (the “DJIA”). The Fund cannot assure you that it will achieve its investment objective.

Investing in the Fund’s common shares (“Common Shares”) involves certain risks that are described in the “Risk Factors” section of this prospectus (the “Prospectus”).

Neither the U.S. Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of these securities or determined if this Prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

You should read this Prospectus, which contains important information about the Fund, before deciding whether to invest and retain it for future reference. A Statement of Additional Information dated             , 2018 (the “SAI”), containing additional information about the Fund, has been filed with the SEC and is incorporated by reference in its entirety into this Prospectus. You may request a free copy of the SAI, the table of contents of which is on the last page of this Prospectus, annual and semi-annual reports to shareholders and other information about the Fund, and make shareholder inquiries by calling (800) 257-8787, by writing to the Fund or from the Fund’s website (http://www.nuveen.com). The information contained in, or that can be accessed through, the Fund’s website is not part of this Prospectus. You also may obtain a copy of the SAI (and other information regarding the Fund) from the SEC’s web site (http://www.sec.gov).

The Fund’s Common Shares do not represent a deposit or obligation of, and are not guaranteed or endorsed by, any bank or other insured depository institution, and are not federally insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other governmental agency.

Portfolio Contents .    The Fund will pursue its investment objective by investing in an equity portfolio and utilizing a dynamic options strategy. Under normal circumstances, the Fund will invest at least 80% of its Assets (as defined on page 2 in the Prospectus Summary), in the thirty stocks included in the DJIA in approximately the amount such stocks are weighted in the DJIA and/or in other securities or financial instruments with economic characteristics that are similar to the thirty stocks included in the DJIA that are intended to correlate with the price movements of the DJIA (the “Equity Portfolio”). Under normal circumstances, the Fund expects to invest substantially all (at least 90%) of its Managed Assets (as defined under “Investment Objective and Policies” in the Prospectus Summary) in the Equity Portfolio or otherwise in pursuit of its investment objective. Under normal circumstances, the Fund will write (sell) covered call options on individual securities, index call options and call options on custom baskets of securities. The Fund targets an overwrite level of approximately 55% over time, and the overwrite level will vary, based on market conditions, between 35% to 75% of the value of the Equity Portfolio.

No Leverage.     As a non-fundamental policy, the Fund will not leverage its capital structure by issuing senior securities such as preferred shares or debt instruments. However, the Fund may borrow for temporary or emergency purposes as permitted by the Investment Company Act of 1940, as amended, and may enter into certain derivatives transactions that have the economic effect of leverage.

Adviser and Sub-Adviser.     Nuveen Fund Advisors, LLC, the Fund’s investment adviser, is responsible for determining the Fund’s overall investment strategies and their implementation. Nuveen Asset Management, LLC is the Fund’s investment sub-adviser and oversees the day-to-day investment operations of the Fund.

The minimum price on any day at which Common Shares may be sold will not be less than the current net asset value per share plus the per share amount of the commission to be paid to the Fund’s distributor, Nuveen Securities, LLC (“Nuveen Securities”). The Fund and Nuveen Securities will suspend the sale of Common Shares if the per share price of the shares is less than the minimum price. The Fund currently intends to distribute the shares offered pursuant

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to this Prospectus through at-the-market transactions, although from time to time it may also distribute shares through an underwriting syndicate or a privately negotiated transaction. To the extent shares are distributed other than through at-the-market transactions, the Fund will file a supplement to this Prospectus describing such transactions. For information on how Common Shares may be sold, see the “Plan of Distribution” section of this Prospectus.

Common Shares are listed on the New York Stock Exchange (the “NYSE”). The trading or “ticker” symbol of the Fund is “DIAX.” The Fund’s closing price on the NYSE on September 14, 2018 was $19.28.

The date of this Prospectus is [                    ], 2018.

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You should rely only on the information contained or incorporated by reference in this Prospectus. The Fund has not authorized anyone to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. The Fund is not making an offer of these securities in any state where the offer is not permitted. You should not assume that the information contained in this Prospectus is accurate as of any date other than the date on the front of this Prospectus. The Fund’s business, financial condition, and prospects may have changed since that date. The Fund will update this Prospectus to reflect any material changes to the disclosures herein.

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For a more complete discussion of the Fund’s portfolio composition, see “The Fund’s Investments.”

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SUMMARY OF FUND EXPENSES

The purpose of the table below and the Examples below are to help you understand all fees and expenses that you, as a Common Shareholder, would bear directly or indirectly. The table shows the expenses of the Fund as a percentage of the average net assets applicable to Common Shares, and not as a percentage of total assets or Managed Assets.

See “Management of the Fund—Investment Adviser, Sub-Adviser, and Portfolio Managers.”

Examples

The following examples illustrate the expenses, including the applicable transaction fees (referred to as the “Maximum Sales Charge” in the fee table above), if any, and estimated offering costs of $2.70 that a Common Shareholder would pay on a $1,000 investment that is held for the time periods provided in the table. Each example assumes that all dividends and other distributions are reinvested in the Fund and that the Fund’s Annual Expenses, as provided above, remain the same. The examples also assume a 5% annual return. ⁽¹⁾

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The examples should not be considered a representation of future expenses. Actual expenses may be greater or less than those shown above.

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FINANCIAL HIGHLIGHTS

The following Financial Highlights table is intended to help a prospective investor understand the Fund’s financial performance for the periods shown. Certain information reflects financial results for a single Common Share of the Fund. The total returns in the table represent the rate an investor would have earned or lost on an investment in Common Shares of the Fund (assuming reinvestment of all dividends). Upon the completion of the reorganization of the DOW 30 ^SM Enhanced Premium & Income Fund Inc. and the DOW 30 ^SM Premium & Dividend Income Fund Inc. with and into the Fund on December 22, 2014, the Fund assumed the performance, financial and other historical information of the DOW 30 ^SM Premium & Dividend Income Fund Inc. The Fund’s annual financial statements as of and for the fiscal years ended December 31, 2017 through December 31, 2008, including the financial highlights for the fiscal years then ended, have been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm. PricewaterhouseCoopers LLP has not reviewed or examined any records, transactions or events after the date of such reports. The information with respect to the six months ended June 30, 2018 is unaudited and is included in the Fund’s 2018 Semi-Annual Report which is incorporated herein by reference. A copy of the Annual Report and Semi-Annual Report may be obtained from www.sec.gov or by visiting www.nuveen.com. The information contained in, or that can be accessed through, the Fund’s website is not part of this Prospectus. Past results are not indicative of future performance.

The following per share data and ratios have been derived from information provided in the financial statements.

Selected data for a share outstanding throughout each period:

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TRADING AND NET ASSET VALUE INFORMATION

The following table shows for the periods indicated: (i) the high and low sales prices for the Common Shares reported as of the end of the day on the NYSE, (ii) the high and low net asset values of the Common Shares, and (iii) the high and low of the premium/(discount) to NAV (expressed as a percentage) of the Common Shares.

The NAV per share, the market price and percentage of premium/(discount) to NAV per Common Share on September 14, 2018 was $18.98, $19.28 and 1.58%, respectively. As of August 31, 2018, the Fund had 36,095,242 Common Shares outstanding and net assets applicable to Common Shares of $690,726,511. See “Repurchase of Fund Shares; Conversion to Open-End Fund.”

THE FUND

The Fund is a non-diversified, closed-end management investment company registered under the 1940 Act. The Fund was organized as a Massachusetts business trust on May 20, 2014, pursuant to the Declaration, which is governed by the laws of The Commonwealth of Massachusetts. The Fund’s Common Shares are listed on the NYSE under the symbol “DIAX.” The Fund’s principal office is located at 333 West Wacker Drive, Chicago, Illinois 60606, and its telephone number is (800) 257-8787.

The Fund’s principal office is located at 333 West Wacker Drive, Chicago, Illinois 60606, and its telephone number is (800) 257-8787.

The following provides information about the Fund’s outstanding Common Shares as of August 31, 2018:

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USE OF PROCEEDS

The net proceeds from the issuance of Common Shares hereunder will be invested in accordance with the Fund’s investment objective and policies as stated below. Pending investment, the timing of which may vary depending on the size of the investment but in no case is expected to exceed 30 days, it is anticipated that the proceeds will be invested in short-term or long-term securities issued by the U.S. Government or its agencies or instrumentalities or in high-quality, short-term money market instruments.

THE FUND’S INVESTMENTS

Investment Objective and Policies

The Fund’s investment objective is to seek attractive total return with less volatility than the DJIA. The Fund cannot assure you that it will achieve its investment objective. The Fund’s investment objective is considered fundamental and may not be changed without shareholder approval. Unless otherwise specified, the Fund’s investment policies are considered non-fundamental.

The Fund will pursue its investment objective by investing in an equity portfolio and utilizing a dynamic options strategy. Under normal circumstances, the Fund will invest its Managed Assets in an equity portfolio designed to broadly track the return and risk characteristics of the DJIA and apply a dynamic call option overwrite strategy.

Equity Portfolio.     Under normal circumstances, the Fund will invest its Managed Assets in the thirty stocks included in the DJIA in approximately the amount such stocks are weighted in the DJIA and/or in other securities or financial instruments with economic characteristics that are similar to the thirty stocks included in the DJIA that are intended to correlate with the price movements of the DJIA (the “Equity Portfolio”). Under normal circumstances, the Fund will invest at least 80% of its Assets in the Equity Portfolio. Under normal circumstances, the Fund expects to invest substantially all (at least 90%) of its Managed Assets in the Equity Portfolio or otherwise in pursuit of its investment objective.

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The securities or other instruments included in the Equity Portfolio will be selected and periodically rebalanced utilizing statistical methods including, but not limited to, optimization and a variety of other quantitative modeling techniques.

The Fund’s policy of investing, under normal circumstances, at least 80% of its Assets in the Equity Portfolio is not considered to be fundamental by the Fund and can be changed without a vote of the common shareholders. However, this policy may only be changed by the Fund’s Board following the provision of 60 days’ prior written notice to common shareholders.

Option Strategy .    The Fund employs a dynamic “overwrite” option strategy consisting of writing (selling) index call options, call options on custom baskets of securities, and covered call options on individual securities (the “Option Strategy”). The Fund targets an overwrite level ( i.e., the ratio of the notional value of call options sold by the Fund to the market value of the Fund’s Equity Portfolio) of 55% of the value of its Equity Portfolio over time, and the overwrite level will vary between 35% to 75% of the value of the Equity Portfolio based on the portfolio manager’s assessment of market conditions. In addition to a primary emphasis on writing call options to reduce downside risk and volatility of the Equity Portfolio, the Option Strategy as a secondary emphasis seeks additional return opportunities by capitalizing on inefficiencies in the options market through a variety of means including the use of call spreads, purchasing call options, and selling put options.

The Fund’s use of an overwrite options strategy is intended to produce cash flow for the Fund in the form of premiums on the options written. In exchange for this cash flow, the Fund’s total return may be reduced relative to the DJIA Index in rising markets and may be enhanced relative to the DJIA in flat or declining markets, in each case consistent with the Fund’s investment objective to seek attractive total return with less volatility than the DJIA.

The Equity Portfolio seeks to track the total return performance of the DJIA. Combined with the Option Strategy, the Fund seeks attractive total return with less volatility than the DJIA. Volatility is measured by the annualized standard deviation of daily returns for the DJIA.

In applying the Option Strategy, Nuveen Asset Management is responsible for determining the notional value, timing, type and terms of the options strategies used by the Fund. Nuveen Asset Management actively manages the Fund’s options positions. In the Nuveen Asset Management’s discretion, the Fund may purchase back call options or allow them to expire. To determine the options strategies used, Nuveen Asset Management considers market factors, such as current market levels and volatility, and option-specific factors, including but not limited to premium/cost, exercise price and expiration. Nuveen Asset Management typically seeks to construct a portfolio of call options that is diversified across multiple strike prices and expiration dates based on current market expectations.

The Fund’s strategy of using the DJIA as the relevant benchmark for the Equity Portfolio and Option Strategy is not considered fundamental and can be changed without a vote of the common shareholders. However, any use of an alternative index must be approved by the Fund’s Board and is subject to 60 days’ written notice to common shareholders.

The Fund also may enter into certain derivatives instruments in pursuit of its investment objective. Such instruments include futures contracts, forward contracts and swap agreements and other derivative instruments consistent with the Fund’s investment objective and policies. These types of strategies may generate taxable income. See “The Fund’s Investments—Portfolio Composition and Other Information—Derivatives.” For purposes of determining compliance with the Fund’s investment policies, the Fund will value eligible derivatives at market value or fair value instead of notional value.

The Fund may, from time to time, manage its cash by investing a part of its assets in short-term, high quality fixed-income securities. Under normal circumstances, the Fund will invest no more than 10% of its Managed Assets in such securities.

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The Fund may invest in illiquid securities without limit.

The Fund may invest up to 20% of its Managed Assets in securities of non-U.S. issuers that are U.S. dollar denominated, which may include securities of issuers located, or conducting their business, in emerging market countries.

Consistent with the Fund’s investment objective and policies, the Fund may invest in securities of other investment companies such as, among others, ETFs, subject to limitations imposed by the 1940 Act and exemptive orders issued by the SEC.

During temporary defensive periods, the Fund may deviate from its investment objective and invest all or a portion of its assets in investment grade debt securities, including obligations issued or guaranteed by the U.S. government, its agencies and instrumentalities. The Fund also may borrow up to 5% of its total assets for temporary purposes.

The Fund cannot change its investment objective without the approval of the holders of a “majority of the outstanding” Common Shares and, if applicable, Preferred Shares voting together as a single class, and of the holders of a “majority of the outstanding” Preferred Shares voting as a separate class. When used with respect to particular shares of the Fund, a “majority of the outstanding” shares means (i) 67% or more of the shares present at a meeting, if the holders of more than 50% of the shares are present or represented by proxy or (ii) more than 50% of the shares, whichever is less. See “Description of Shares—Preferred Shares—Voting Rights” and the SAI under “Description of Shares—Preferred Shares—Voting Rights” for additional information with respect to the voting rights of holders of Preferred shares. See also “Management of the Fund.”

Fund Management

NFALLC is the Fund’s investment adviser and is responsible for the Fund’s overall investment strategy and its implementation.

NFALLC will oversee Nuveen Asset Management in its management of the Fund’s portfolio. This oversight will include ongoing evaluation of Nuveen Asset Management’s investment performance, portfolio allocations, quality of investment process and personnel, compliance with Fund and regulatory guidelines, trade allocation and execution and other factors.

Nuveen Asset Management will invest the Fund’s Managed Assets in the Equity Portfolio. Nuveen Asset Management also will manage the Fund’s Option Strategy. The Fund’s Option Strategy will consist of selling call options covering between 35% and 75% of the value of the Fund’s equity portfolio, with a long-run target of 55%, in seeking to provide attractive total return with less volatility than the DJIA. By selling call options on less than the full value of the Equity Portfolio, the Fund retains any potential capital appreciation or depreciation on the portion of the Equity Portfolio not effectively subject to the call options. In addition, as a secondary emphasis, the Fund’s Option Strategy seeks additional return opportunities by capitalizing on inefficiencies in the options market through a variety of means including the use of call spreads, purchasing call options, and selling put options.

Investment Philosophy

Investment Philosophy.     Nuveen Asset Management believes an option strategy that combines selling call options and holding an equity portfolio may provide attractive total return with less volatility than holding a standalone equity portfolio. An actively managed option strategy may be an effective risk management tool that results in an improved reward-to-risk ratio, greater return consistency and the potential for greater preservation of portfolio value in adverse markets.

Nuveen Asset Management believes index options may achieve better tax and transactional efficiency than options on individual stocks because index options are cash-settled with known exercise dates. Additionally, markets for index options are deeper, more liquid and result in lower transaction costs.

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Nuveen Asset Management further believes that its integrated strategy of selling index call options (supported by an underlying equity portfolio) should generally provide attractive total return with less volatility than simply owning the underlying equity market index under three different stock market scenarios: (i) moderately rising markets; (ii) stable or flat markets; (iii) moderately down trending markets. In strongly rising equity markets the option strategy would generally be expected to underperform the underlying index.

Investment Process.

Option Strategy.     Nuveen Asset Management employs a dynamic option strategy consisting of writing (selling) index call options, call options on custom baskets of securities, and covered call options on individual securities. The Fund targets an overwrite level of 55% of the value of its Equity Portfolio over time, and the overwrite level will vary between 35% to 75% of the value of the Equity Portfolio based on the portfolio manager’s assessment of market conditions. Nuveen Asset Management’s option strategy is supported by investments in an equity portfolio designed to broadly track the return and risk characteristics of the DJIA.

Nuveen Asset Management actively manages its option positions, purchasing back the call options and/or selling additional contracts based on relative value and risk/return analysis. To determine which options to utilize, Nuveen Asset Management considers market factors, such as current market levels and volatility, and option-specific factors (including but not limited to premium/cost, exercise price and expiration). Nuveen Asset Management seeks to construct a portfolio of index call options that is diversified across multiple strike prices and expiration dates.

Equity Portfolio.     Nuveen Asset Management constructs the Equity Portfolio by purchasing the common stock of each company included in the DJIA in approximately the amounts stocks are weighted in the DJIA. The Fund will periodically rebalance its holdings of DJIA stocks in order to more closely approximate each stock’s weighting in the DJIA. To facilitate cash management, the Fund may invest periodically in securities or other financial instruments that share similar economic characteristics with the DJIA. Nuveen Asset Management will consider the tax consequences of certain transactions within the Equity Portfolio and intends to manage the portfolio in a tax-efficient manner by taking, for example, capital losses when possible to offset realized capital gains. Nuveen Asset Management will rebalance and adjust the Equity Portfolio as necessary for tracking and tax management purposes.

Portfolio Composition and Other Information

The Fund’s portfolio will be composed principally of the following investments.

Common Stocks.     The Fund expects to invest in the thirty common stocks included in the DJIA in approximately the amount such stocks are weighted in the DJIA. The Fund may also invest in other securities or financial instruments with economic characteristics that are similar to the thirty stocks included in the DJIA that are intended to correlate with the price movements of the DJIA. The Fund may also invest in other investment companies, including ETFs, that provide similar exposure to individual common stocks consistent with the Fund’s investment objective. Common stock generally represents an equity ownership interest in an issuer. Although common stocks have historically generated higher average total returns than fixed-income securities over the long term, common stocks also have experienced significantly more volatility in those returns and may under-perform relative to fixed-income securities during certain periods. An adverse event, such as an unfavorable earnings report, may depress the value of a particular common stock held by the Fund. Also, prices of common stocks are sensitive to general movements in the stock market and a drop in the stock market may depress the price of common stocks to which the Fund has exposure. Common stock prices fluctuate for several reasons including changes in investors’ perceptions of the financial condition of an issuer or the general condition of the relevant stock market, or the occurrence of political or economic events which effect the issuers. In addition, common stock prices may be particularly sensitive to rising interest rates, which increases borrowing costs and the costs of capital.

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Call Options.     With respect to call options written on individual securities, the Fund will not write “naked” or uncovered call options. A call option written by the Fund on an individual security is “covered” if the Fund owns the security underlying the call or has an absolute and immediate right to acquire that security without additional cash consideration. The Fund, in effect, sells the potential appreciation over the exercise price in the value of the security subject to the call option in exchange for the premium. The Fund may execute a closing purchase transaction with respect to an option it has sold and sell another option (with either a different exercise price or expiration date or both). The Fund’s objective in entering into such a closing transaction will be to optimize the return from its options strategy. The cost of a closing transaction may reduce the return realized from the sale of the option. This reduction could be offset, at least in part, by appreciation in the value of the underlying security held in the Fund’s equity portfolio, and by the opportunity to realize additional return from selling a new option.

The Fund may also write index call options on the DJIA and other broad-based indices and may, if Nuveen Asset Management deems conditions appropriate, write call options on a variety of other equity market indices. As the seller of an index call option, the Fund receives a premium from the purchaser. The purchaser of the index call option has the right to any appreciation in the value of the index over the exercise price on the expiration date. If, at expiration, the purchaser exercises the index option sold by the Fund, the Fund will pay the purchaser the difference between the cash value of the index and the exercise price of the index option. The premium, the exercise price and the market value of the index determine the gain or loss realized by the Fund as the seller of the index call option.

The Fund may also write call options on custom baskets of securities. A custom basket call option is an over-the-counter (“OTC”) option with a counterparty whose value is linked to the market value of a portfolio of underlying securities and is collateralized by a portion of the Fund’s equity portfolio. In order to minimize the difference between the returns of the underlying securities in the custom basket (commonly referred to as a tracking error), Nuveen Asset Management will use optimization calculations when selecting the individual securities for inclusion in the custom basket.

The Fund may also purchase call options. A call option entitles the purchaser, in return for the premium paid, to purchase specified securities at a specified price during the option period. Because the premium paid for a call option is typically a small fraction of the price of the underlying security, a given amount of funds will purchase call options covering a much larger quantity of such security than could be purchased directly. By purchasing call options, the Fund could benefit from any significant increase in the price of the underlying security to a greater extent than if it had invested the same amount in the security directly.

Call Spreads.     A call spread involves the sale of a call option and the corresponding purchase of a call option on the same underlying security with the same expiration date but with different exercise prices. In entering into call spreads, the Fund generally will sell an at-the-money or slightly out-of-the-money call option and purchase an out-of-the-money call option that has a strike price higher than the strike price of the option written by the Fund. The call spreads utilized by the Fund generally will generate less net option premium than writing calls, but limit the overall risk of the strategy (in rapidly rising markets) by capping the Fund’s liability from the written call while simultaneously allowing for additional upside above the strike price of the purchased call.

Put Options.     A put option on a security gives the purchaser of the option the right (but not the obligation) to sell, and the writer of the option the obligation to buy, the underlying security at a stated price (the “exercise price”) at any time before the option expires. The purchase price for a put option is the “premium” paid by the purchaser for the right to sell. When the Fund sells a put option on an underlying security and the underlying security decreases in value, the purchaser of the put option has the right to exercise the option, obligating the Fund to purchase the underlying security at an exercise price that is higher than the prevailing market price. The Fund collects option premium income when it sells the put option. If the underlying security increases in value, the purchaser of the put option is unlikely to exercise the option since the prevailing market price will be higher than the exercise price. Accordingly, the Fund retains all put premium income collected during market advances.

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Securities Issued by Non-U.S. Issuers.     The Fund may invest up to 20% of its Managed Assets in securities of non-U.S. issuers that are U.S. dollar-denominated, which may include securities of issuers located, or conducting their business, in emerging market countries.

Illiquid Securities.     The Fund may invest in securities and other instruments that, at the time of investment, are illiquid ( i.e. , securities that are not readily marketable). For this purpose, illiquid securities may include, but are not limited to, restricted securities (securities the disposition of which is restricted under the federal securities laws), securities that may only be resold pursuant to Rule 144A under the 1933 Act, that are deemed to be illiquid, and certain repurchase agreements. The Board or its delegate has the ultimate authority to determine which securities are liquid or illiquid. The Board has delegated to NFALLC and Nuveen Asset Management the day-to-day determination of the illiquidity of any security held by the Fund, although it has retained oversight and ultimate responsibility for such determinations. No definitive liquidity criteria are used. The Board has directed NFALLC and Nuveen Asset Management when making liquidity determinations to look for such factors as (i) the nature of the market for a security (including the institutional private resale market; the frequency of trades and quotes for the security; the number of dealers willing to purchase or sell the security; the amount of time normally needed to dispose of the security; and the method of soliciting offers and the mechanics of transfer), (ii) the terms of certain securities or other instruments allowing for the disposition to a third party or the issuer thereof ( e.g. , certain repurchase obligations and demand instruments), and (iii) other relevant factors.

Restricted securities may be sold only in privately negotiated transactions or in a public offering with respect to which a registration statement is in effect under the 1933 Act. Where registration is required, the Fund may be obligated to pay all or part of the registration expenses and a considerable period may elapse between the time of the decision to sell and the time the Fund may be permitted to sell a security under an effective registration statement. If, during such a period, adverse market conditions were to develop, the Fund might obtain a less favorable price than that which prevailed when it decided to sell. Illiquid securities will be priced at fair value as determined in good faith by the Board or its delegate.

When-Issued and Delayed Delivery Transactions.     As a non-principal investment, the Fund may buy and sell securities on a when-issued or delayed delivery basis, making payment or taking delivery at a later date, normally within 15 to 45 days of the trade date. This type of transaction may involve an element of risk because no interest accrues on the securities prior to settlement and, because securities are subject to market fluctuations, the value of the securities at time of delivery may be less (or more) than their cost. A separate account of the Fund will be established with its custodian consisting of cash equivalents or liquid securities having a market value at all times at least equal to the amount of any delayed payment commitment.

Debt Securities; Defensive Position.     Under normal circumstances, the Fund may invest up to 10% of its Managed Assets in short-term high quality fixed income instruments. During temporary defensive periods, the Fund may deviate from its investment objective and invest all or any portion of its assets in investment grade debt securities, including obligations issued or guaranteed by the U.S. government, its agencies and instrumentalities. In such a case, the Fund may not pursue or achieve its investment objective.

Other Investment Companies.     The Fund may invest in securities of other investment companies such as, among others, ETFs, subject to limitations imposed by the 1940 Act and exemptive orders issued by the SEC. The Fund generally expects that it may invest in other investment companies during periods when it has large amounts of uninvested cash, such as during periods when there is a shortage of attractive securities of the types in which the Fund may invest directly available in the market. As an investor in an investment company, the Fund will bear its ratable share of that investment company’s expenses, and would remain subject to payment of the Fund’s advisory and administrative fees with respect to assets so invested. Common Shareholders would therefore be subject to duplicative expenses to the extent the Fund invests in other investment companies. Nuveen Asset Management will take expenses into account when evaluating the investment merits of an investment in the investment company relative to available securities of the types in which the Fund may invest directly. In addition, the securities of other investment companies may be leveraged and therefore will be subject to leverage risks.

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Derivatives.      The Fund may invest in certain derivative instruments in pursuit of its investment objective. Such instruments include futures contracts, forward contracts and swap agreements and other derivative instruments consistent with the Fund’s investment objective and policies. Credit default swaps may require initial premium (discount) payments as well as periodic payments (receipts) related to the interest leg of the swap or to the default of a reference obligation. If the Fund is a seller of a contract, the Fund would be required to pay the par (or other agreed upon) value of a referenced debt obligation to the counterparty in the event of a default or other credit event by the reference issuer, such as a U.S. or foreign corporate issuer, with respect to such debt obligations. In return, the Fund would receive from the counterparty a periodic stream of payments over the term of the contract provided that no event of default has occurred. If no default occurs, the Fund would keep the stream of payments and would have no payment obligations. As the seller, the Fund would be subject to investment exposure on the notional amount of the swap. If the Fund is a buyer of a contract, the Fund would have the right to deliver a referenced debt obligation and receive the par (or other agreed-upon) value of such debt obligation from the counterparty in the event of a default or other credit event (such as a credit downgrade) by the reference issuer, such as a U.S. or foreign corporation, with respect to its debt obligations. In return, the Fund would pay the counterparty a periodic stream of payments over the term of the contract provided that no event of default has occurred. If no default occurs, the counterparty would keep the stream of payments and would have no further obligations to the Fund. Interest rate swaps involve the exchange by the Fund with a counterparty of their respective commitments to pay or receive interest, such as an exchange of fixed-rate payments for floating rate payments. The Fund will usually enter into interest rate swaps on a net basis; that is, the two payment streams will be netted out in a cash settlement on the payment date or dates specified in the instrument, with the Fund receiving or paying, as the case may be, only the net amount of the two payments.

See “Hedging Strategies and Other Uses of Derivatives” and “Segregation of Assets” in the SAI.

The requirements for qualification as a regulated investment company (“RIC”) under Subchapter M of the Code also may limit the extent to which the Fund may employ futures, options on futures or swaps.

There is no assurance that these derivative strategies will be available at any time or that NFALLC and Nuveen Asset Management will determine to use them for the Fund or, if used, that the strategies will be successful.

Swap Transactions.     The Fund may enter into total return, interest rate and credit default swap agreements and interest rate caps, floors and collars. The Fund may also enter into options on the foregoing types of swap agreements (“swap options”).

The Fund may enter into swap transactions for any purpose consistent with its investment objective and strategies, such as for the purpose of attempting to obtain or preserve a particular return or spread at a lower cost than obtaining a return or spread through purchases and/or sales of instruments in other markets, as a duration management technique, to reduce risk arising from the ownership of a particular instrument, or to gain exposure to certain sectors or markets in the most economical way possible.

Swap agreements are two party contracts entered into primarily by institutional investors for a specified period of time. In a standard swap transaction, two parties agree to exchange the returns (or differentials in rates of return) earned or realized on a particular predetermined asset, reference rate or index. The gross returns to be exchanged or swapped between the parties are generally calculated with respect to a notional amount,  e.g. , the return on or increase in value of a particular dollar amount invested at a particular interest rate or in a basket of securities representing a particular index. The notional amount of the swap agreement generally is only used as a basis upon which to calculate the obligations that the parties to the swap agreement have agreed to exchange. See “—Segregation of Assets” below.

Interest Rate Swaps, Caps, Collars and Floors.     Interest rate swaps are bilateral contracts in which each party agrees to make periodic payments to the other party based on different referenced interest rates ( e.g. , a

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fixed rate and a floating rate) applied to a specified notional amount. The purchase of an interest rate floor entitles the purchaser, to the extent that a specified index falls below a predetermined interest rate, to receive payments of interest on a notional principal amount from the party selling such interest rate floor. The purchase of an interest rate cap entitles the purchaser, to the extent that a specified index rises above a predetermined interest rate, to receive payments of interest on a notional principal amount from the party selling such interest rate cap. Interest rate collars involve selling a cap and purchasing a floor or vice versa to protect the Fund against interest rate movements exceeding given minimum or maximum levels.

The use of interest rate transactions, such as interest rate swaps and caps, is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio security transactions. Depending on the state of interest rates in general, the Fund’s use of interest rate swaps or caps could enhance or harm the overall performance of the Fund’s Common Shares. To the extent there is a decline in interest rates, the value of the interest rate swap or cap could decline, and could result in a decline in the NAV of the Common Shares. In addition, if short-term interest rates are lower than the Fund’s fixed rate of payment on the interest rate swap, the swap will reduce common share net earnings. If, on the other hand, short-term interest rates are higher than the fixed rate of payment on the interest rate swap, the swap will enhance Common Share net earnings. Buying interest rate caps could enhance the performance of the Common Shares by providing a maximum leverage expense. Buying interest rate caps could also decrease the net earnings of the common shares in the event that the premium paid by the Fund to the counterparty exceeds the additional amount such Fund would have been required to pay had it not entered into the cap agreement.

Total Return Swaps.     In a total return swap, one party agrees to pay the other the “total return” of a defined underlying asset during a specified period, in return for periodic payments based on a fixed or variable interest rate or the total return from other underlying assets. A total return swap may be applied to any underlying asset but is most commonly used with equity indices, single stocks, bonds and defined baskets of loans and mortgages. The Fund might enter into a total return swap involving an underlying index or basket of securities to create exposure to a potentially widely diversified range of securities in a single trade. An index total return swap can be used by the portfolio managers to assume risk, without the complications of buying the component securities from what may not always be the most liquid of markets. In connection with the Fund’s position in a swap contract, the Fund will segregate liquid assets or will otherwise cover its position in accordance with applicable SEC requirements. See “—Segregation of Assets” below.

Credit Default Swaps.     A credit default swap is a bilateral contract that enables an investor to buy or sell protection against a defined-issuer credit event. The Fund may enter into credit default swap agreements either as a buyer or a seller. The Fund may buy protection to attempt to mitigate the risk of default or credit quality deterioration in an individual security or a segment of the fixed income securities market to which it has exposure, or to take a “short” position in individual bonds or market segments which it does not own. The Fund may sell protection in an attempt to gain exposure to the credit quality characteristics of particular bonds or market segments without investing directly in those bonds or market segments. As the buyer of protection in a credit default swap, the Fund would pay a premium (by means of an upfront payment or a periodic stream of payments over the term of the agreement) in return for the right to deliver a referenced bond or group of bonds to the protection seller and receive the full notional or par value (or other agreed upon value) upon a default (or similar event) by the issuer(s) of the underlying referenced obligation(s). If no default occurs, the protection seller would keep the stream of payments and would have no further obligation to the Fund. Thus, the cost to the Fund would be the premium paid with respect to the agreement. If a credit event occurs, however, the Fund may elect to receive the full notional value of the swap in exchange for an equal face amount of deliverable obligations of the reference entity that may have little or no value. The Fund bears the risk that the protection seller may fail to satisfy its payment obligations.

If the Fund is a seller of protection in a credit default swap and no credit event occurs, the Fund would generally receive an up-front payment or a periodic stream of payments over the term of the swap. If a credit event occurs, however, generally the Fund would have to pay the buyer the full notional value of the swap in

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exchange for an equal face amount of deliverable obligations of the reference entity that may have little or no value. As the protection seller, the Fund effectively adds economic leverage to its portfolio because, in addition to being subject to investment exposure on its total net assets, the Fund is subject to investment exposure on the notional amount of the swap. Thus, the Fund bears the same risk as it would by buying the reference obligations directly, plus the additional risks related to obtaining investment exposure through a derivative instrument discussed below under “—Risks Associated with Swap Transactions.”

Swap Options.     A swap option is a contract that gives a counterparty the right (but not the obligation), in return for payment of a premium, to enter into a new swap agreement or to shorten, extend, cancel, or otherwise modify an existing swap agreement at some designated future time on specified terms. A cash-settled option on a swap gives the purchaser the right, in return for the premium paid, to receive an amount of cash equal to the value of the underlying swap as of the exercise date. The Fund may write (sell) and purchase put and call swap options. Depending on the terms of the particular option agreement, the Fund generally would incur a greater degree of risk when it writes a swap option than when it purchases a swap option. When the Fund purchases a swap option, it risks losing only the amount of the premium it has paid should it decide to let the option expire unexercised. However, when the Fund writes a swap option, upon exercise of the option the Fund would become obligated according to the terms of the underlying agreement.

Risks Associated with Swap Transactions.     The use of swap transactions is a highly specialized activity which involves strategies and risks different from those associated with ordinary portfolio security transactions. If NFALLC and/or Nuveen Asset Management is incorrect in its forecasts of default risks, market spreads or other applicable factors or events, the investment performance of the Fund would diminish compared with what it would have been if these techniques were not used. As the protection seller in a credit default swap, the Fund effectively adds economic leverage to its portfolio because, in addition to being subject to investment exposure on its total net assets, the Fund is subject to investment exposure on the notional amount of the swap. The Fund generally may only close out a swap, cap, floor, collar or other two-party contract with its particular counterparty, and generally may only transfer a position with the consent of that counterparty. In addition, the price at which the Fund may close out such a two party contract may not correlate with the price change in the underlying reference asset. If the counterparty defaults, the Fund will have contractual remedies, but there can be no assurance that the counterparty will be able to meet its contractual obligations or that the Fund will succeed in enforcing its rights. It also is possible that developments in the derivatives market, including potential government regulation, could adversely affect the Fund’s ability to terminate existing swap or other agreements or to realize amounts to be received under such agreements.

Futures and Options on Futures Generally.     A futures contract is an agreement between two parties to buy and sell a security, index or interest rate (each a “financial instrument”) for a set price on a future date. Certain futures contracts, such as futures contracts relating to individual securities, call for making or taking delivery of the underlying financial instrument. However, these contracts generally are closed out before delivery by entering into an offsetting purchase or sale of a matching futures contract (same exchange, underlying financial instrument, and delivery month). Other futures contracts, such as futures contracts on interest rates and indices, do not call for making or taking delivery of the underlying financial instrument, but rather are agreements pursuant to which two parties agree to take or make delivery of an amount of cash equal to the difference between the value of the financial instrument at the close of the last trading day of the contract and the price at which the contract was originally written. These contracts also may be settled by entering into an offsetting futures contract. Unlike when the Fund purchases or sells a security, no price is paid or received by the Fund upon the purchase or sale of a futures contract. Initially, the Fund will be required to deposit with the futures broker, known as a FCM, an amount of cash or securities equal to a varying specified percentage of the contract amount. This amount is known as initial margin. The margin deposit is intended to ensure completion of the contract. Minimum initial margin requirements are established by the futures exchanges and may be revised. In addition, FCMs may establish margin deposit requirements that are higher than the exchange minimums. Cash held in the margin account generally is not income producing. However, coupon bearing securities, such as Treasury securities, held in margin accounts generally will earn income. Subsequent payments to and from the

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FCM, called variation margin, will be made on a daily basis as the price of the underlying financial instrument fluctuates, making the futures contract more or less valuable, a process known as marking the contract to market. Changes in variation margin are recorded by the Fund as unrealized gains or losses. At any time prior to expiration of the futures contract, the Fund may elect to close the position by taking an opposite position that will operate to terminate its position in the futures contract. A final determination of variation margin is then made, additional cash is required to be paid by or released to the Fund, and the Fund realizes a gain or loss. In the event of the bankruptcy or insolvency of an FCM that holds margin on behalf of the Fund, the Fund may be entitled to the return of margin owed to it only in proportion to the amount received by the FCM’s other customers, potentially resulting in losses to the Fund. Futures transactions also involve brokerage costs and the Fund may have to segregate additional liquid assets in accordance with applicable SEC requirements. See “—Segregation of Assets” below.

A futures option gives the purchaser of such option the right, in return for the premium paid, to assume a long position (call) or short position (put) in a futures contract at a specified exercise price at any time during the period of the option. Upon exercise of a call option, the purchaser acquires a long position in the futures contract and the writer is assigned the opposite short position. Upon the exercise of a put option, the opposite is true.

Segregation of Assets.     As a closed-end investment company registered with the SEC, the Fund is subject to the federal securities laws, including the 1940 Act, the rules thereunder, and various interpretive positions of the SEC and its staff. In accordance with these laws, rules and positions, the Fund must maintain liquid assets (often referred to as “asset segregation”), or engage in other SEC staff-approved measures, to “cover” open positions with respect to certain kinds of derivative instruments and financial agreements (such as reverse repurchase agreements). Generally, the Fund will maintain an amount of liquid assets with its custodian in an amount at least equal to the current amount of its obligations, including the value of unpaid past and future payment obligations, under derivative instruments and financial agreements, in accordance with SEC guidance. However, the Fund also may “cover” such obligations by other means such as through ownership of the underlying security or financial instrument. The Fund also may enter into offsetting transactions so that its combined position, coupled with any liquid assets maintained by its custodian, equals its net outstanding obligation in related derivatives or financial agreements. If the Fund will write credit default swaps, it will segregate the full notional amount of the payment obligation under the credit default swap that must be paid upon the occurrence of a credit event.

The Fund reserves the right to modify its policies in the future to comply with any changes in the positions from time to time articulated by the SEC or its staff, such as the SEC’s proposed rules governing the use of derivatives by registered investment companies, regarding asset segregation.

To the extent the Fund uses its assets to cover its obligations as required by the 1940 Act, the rules thereunder, and applicable positions of the SEC and its staff, such assets may not be used for other operational purposes. NFALLC and/or Nuveen Asset Management will monitor the Fund’s use of derivatives and will take action as necessary for the purpose of complying with the asset segregation policy stated above. Such actions may include the sale of the Fund’s portfolio investments.

Limitations on the Use of Futures, Futures Options and Swaps.     If futures are used for hedging purposes, there can be no guarantee that there will be a correlation between price movements in the futures contract and in the underlying financial instruments that are being hedged. This could result from differences between the financial instruments being hedged and the financial instruments underlying the standard contracts available for trading ( e.g. , differences in interest rate levels, maturities and the creditworthiness of issuers) among other factors. In addition, price movements of futures contracts may not correlate perfectly with price movements of the financial instruments underlying the futures contracts due to certain market distortions.

Successful use of futures by the Fund also is subject to Nuveen Asset Management’s ability to predict correctly movements in the direction of the relevant market. For example, if the Fund uses futures to hedge against the possibility of a decline in the market value of securities held in its portfolio and the prices of such

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securities increase instead, the Fund will lose part or all of the benefit of the increased value of the securities which it has hedged because it will have offsetting losses in its futures positions. Furthermore, if in such circumstances the Fund has insufficient cash, it may have to sell securities to meet daily variation margin requirements. The Fund may have to sell such securities at a time when it may be disadvantageous to do so.

There can be no assurance that a liquid market will exist at a time when the Fund seeks to close out a derivatives or futures or a futures option position, and the Fund would remain obligated to meet margin requirements until the position is closed. Futures exchanges may limit the amount of fluctuation permitted in certain futures contract prices during a single trading day. The daily limit establishes the maximum amount that the price of a futures contract may vary either up or down from the previous day’s settlement price at the end of the current trading session. Once the daily limit has been reached in a futures contract subject to the limit, no more trades may be made on that day at a price beyond that limit. The daily limit governs only price movements during a particular trading day and therefore does not limit potential losses because the limit may work to prevent the liquidation of unfavorable positions. For example, futures prices have occasionally moved to the daily limit for several consecutive trading days with little or no trading, thereby preventing prompt liquidation of positions and subjecting some holders of futures contracts to substantial losses.

Other Investments.     The Fund may invest in other securities as non-principal investments as described below:

U.S. Government Securities.     U.S. Government securities include (1) U.S. Treasury obligations, which differ in their interest rates, maturities and times of issuance: U.S. Treasury bills (maturities of one year or less), U.S. Treasury notes (maturities of one year to ten years) and U.S. Treasury bonds (generally maturities of greater than ten years) and (2) obligations issued or guaranteed by U.S. Government agencies and instrumentalities that are supported by any of the following: (i) the full faith and credit of the U.S. Treasury, (ii) the right of the issuer to borrow an amount limited to a specific line of credit from the U.S. Treasury, (iii) discretionary authority of the U.S. Government to purchase certain obligations of the U.S. Government agency or instrumentality or (iv) the credit of the agency or instrumentality. The Fund also may invest in any other security or agreement collateralized or otherwise secured by U.S. Government securities. Agencies and instrumentalities of the U.S. Government include but are not limited to: Federal Land Banks, Federal Financing Banks, Banks for Cooperatives, Federal Intermediate Credit Banks, Farm Credit Banks, Federal Home Loan Banks, Federal Home Loan Mortgage Corporation, Federal National Mortgage Association, Government National Mortgage Association, Student Loan Marketing Association, U.S. Postal Service, Small Business Administration, Tennessee Valley Authority and any other enterprise established or sponsored by the U.S. Government. Because the U.S. Government generally is not obligated to provide support to its instrumentalities, the Fund will invest in obligations issued by these instrumentalities only if Nuveen Asset Management determines that the credit risk with respect to such obligations is minimal.

Commercial Paper.     Commercial paper represents short-term unsecured promissory notes issued in bearer form by corporations such as banks or bank holding companies and finance companies.

Repurchase Agreements.     The Fund may enter into repurchase agreements (the purchase of a security coupled with an agreement to resell that security at a higher price) with respect to its permitted investments. The Fund’s repurchase agreements will provide that the value of the collateral underlying the repurchase agreement will always be at least equal to the repurchase price, including any accrued interest earned on the agreement, and will be marked-to-market daily.

Inter-Fund Borrowing and Lending .    The SEC has granted an exemptive order permitting registered open-end and closed-end Nuveen funds, including the Fund, to participate in an inter-fund lending facility whereby the Nuveen funds may directly lend to and borrow money from each other for temporary purposes ( e.g. , to satisfy redemption requests or when a sale of securities “fails,” resulting in an unanticipated cash shortfall) (the “Inter-Fund Program”). The Fund will participate only as a lender, and not as a borrower, in the Inter-Fund Program.

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The Inter-Fund Program is subject to a number of conditions, including, among other things, the requirements that (1) no fund may borrow or lend money through the Inter-Fund Program unless it receives a more favorable interest rate than is typically available from a bank or other financial institution for a comparable transaction; (2) no fund may borrow on an unsecured basis through the Inter-Fund Program unless the fund’s outstanding borrowings from all sources immediately after the inter-fund borrowing total 10% or less of its total assets; provided that if the borrowing fund has a secured borrowing outstanding from any other lender, including but not limited to another fund, the inter-fund loan must be secured on at least an equal priority basis with at least an equivalent percentage of collateral to loan value; (3) if a fund’s total outstanding borrowings immediately after an inter-fund borrowing would be greater than 10% of its total assets, the fund may borrow through the inter-fund loan on a secured basis only; (4) no fund may lend money if the loan would cause its aggregate outstanding loans through the Inter-Fund Program to exceed 15% of its net assets at the time of the loan; (5) a fund’s inter-fund loans to any one fund shall not exceed 5% of the lending fund’s net assets; (6) the duration of inter-fund loans will be limited to the time required to receive payment for securities sold, but in no event more than seven days; and (7) each inter-fund loan may be called on one business day’s notice by a lending fund and may be repaid on any day by a borrowing fund. In addition, a Nuveen fund may participate in the Inter-Fund Program only if and to the extent that such participation is consistent with the fund’s investment objective and investment policies. The Board is responsible for overseeing the Inter-Fund Program.

The limitations detailed above and the other conditions of the SEC exemptive order permitting the Inter-Fund Program are designed to minimize the risks associated with Inter-Fund Program for both the lending fund and the borrowing fund. However, no borrowing or lending activity is without risk. When a fund borrows money from another fund, there is a risk that the loan could be called on one day’s notice or not renewed, in which case the borrowing fund may have to borrow from a bank at a higher rate or take other actions to payoff such loan if an inter-fund loan is not available from another fund. When a fund lends money to another fund, any delay in repayment to the lending fund could result in a lost investment opportunity or additional borrowing costs.

In May 2017, the Board approved the Nuveen funds’ (including the Fund’s) participation in the Inter-Fund Program. During the fiscal year ended December 31, 2017, the Fund did not enter into any inter-fund loan activity.

Portfolio Turnover.     The Fund may engage in portfolio trading when considered appropriate, but short-term trading in the Fund’s Equity Portfolio will not be used as the primary means of achieving the Fund’s investment objective. Although the Fund cannot accurately predict its annual portfolio turnover rate, it is not expected to exceed 50% under normal circumstances. For the fiscal year ended December 31, 2017, the Fund’s portfolio turnover rate was 5%. For the six months ended June 30, 2018, the Fund’s portfolio turnover rate was 6%. However, there are no limits on the rate of portfolio turnover, and investments may be sold without regard to length of time held when investment considerations warrant such action. A higher portfolio turnover rate results in correspondingly greater brokerage commissions and other transactional expenses. High portfolio turnover may result in the realization of net short-term capital gains by the Fund, which, when distributed to shareholders, will be taxable as ordinary income. See “Tax Matters.”

USE OF LEVERAGE

As a non-fundamental policy, the Fund will not leverage its capital structure by issuing senior securities such as preferred shares or debt instruments. However, the Fund may borrow for temporary or emergency purposes and may enter into certain derivatives transactions that have the economic effect of leverage by creating additional investment exposure.

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RISKS

The Fund is a non-diversified, closed-end management investment company designed primarily as a long-term investment and not as a trading vehicle. The Fund is not intended to be a complete investment program and, due to the uncertainty inherent in all investments, there can be no assurance that the Fund will achieve its investment objective. Your Common Shares at any point in time may be worth less than your original investment, even after taking into account the reinvestment of Fund dividends and distributions.

Investment and Market Risk

An investment in the Fund’s Common Shares is subject to investment risk, including the possible loss of the entire principal amount that you invest. Your investment in Common Shares represents an indirect investment in the securities owned by the Fund. Your Common Shares at any point in time may be worth less than your original investment, even after taking into account the reinvestment of Fund dividends and distributions.

Market Discount from Net Asset Value

Shares of closed-end investment companies like the Fund have during some periods traded at prices higher than NAV and have during other periods traded at prices lower than NAV. The Fund cannot predict whether Common Shares will trade at, above or below NAV. This characteristic is a risk separate and distinct from the risk that the Fund’s NAV could decrease as a result of investment activities. Investors bear a risk of loss to the extent that the price at which they sell their shares is lower in relation to the Fund’s NAV than at the time of purchase, assuming a stable NAV. Proceeds from the sale of Common Shares in this offering will be reduced by transaction costs (if applicable, which vary depending on the offering method used). The NAV per Common Share will be reduced by an amount up to the offering costs. The NAV per Common Share will be reduced by costs associated with any future offerings of Common Shares. Depending on the premium of Common Shares at the time of any offering of Common Shares hereunder, the Fund’s NAV may be reduced by an amount up to the offering costs (estimated to be an additional 0.27% of the offering price assuming a Common Share offering price of $19.28 (the Fund’s closing price on the NYSE on September 14, 2018)). The Common Shares are designed primarily for long-term investors, and you should not view the Fund as a vehicle for trading purposes.

Recent Market Circumstances

Since the financial crisis that started in 2008, the U.S. and many foreign economies continue to experience its after-effects. Conditions in the U.S. and many foreign economies have resulted, and may continue to result, in certain instruments experiencing unusual liquidity issues, increased price volatility and, in some cases, credit downgrades and increased likelihood of default. These events have reduced the willingness and ability of some lenders to extend credit, and have made it more difficult for some borrowers to obtain financing on attractive terms, if at all. In some cases, traditional market participants have been less willing to make a market in some types of debt instruments, which has affected the liquidity of those instruments. During times of market turmoil, investors tend to look to the safety of securities issued or backed by the U.S. Treasury, causing the prices of these securities to rise and the yields to decline. Reduced liquidity in fixed income and credit markets may negatively affect many issuers worldwide. In addition, global economies and financial markets are becoming increasingly interconnected, which increases the possibilities that conditions in one country or region might adversely impact issuers in a different country or region. A rise in protectionist trade policies, and the possibility of changes to some international trade agreements, could affect the economies of many nations in ways that cannot necessarily be foreseen at the present time.

In response to the financial crisis, the U.S. and other governments and the Federal Reserve and certain foreign central banks have taken steps to support financial markets. In some countries where economic conditions are recovering, such countries are nevertheless perceived as still fragile. Withdrawal of government support, failure of efforts in response to the crisis, or investor perception that such efforts are not succeeding,

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could adversely impact the value and liquidity of certain securities. The severity or duration of adverse economic conditions may also be affected by policy changes made by governments or quasi-governmental organizations, including changes in tax laws. The impact of new financial regulation legislation on the markets and the practical implications for market participants may not be fully known for some time. Regulatory changes are causing some financial services companies to exit long-standing lines of business, resulting in dislocations for other market participants. In addition, the contentious domestic political environment, as well as political and diplomatic events within the United States and abroad, such as the U.S. government’s inability at times to agree on a long-term budget and deficit reduction plan, the threat of a federal government shutdown and threats not to increase the federal government’s debt limit, may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree. The U.S. government has recently reduced federal corporate income tax rates, and future legislative, regulatory and policy changes may result in more restrictions on international trade, less stringent prudential regulation of certain players in the financial markets, and significant new investments in infrastructure and national defense. Markets may react strongly to expectations about the changes in these policies, which could increase volatility, especially if the markets’ expectations for changes in government policies are not borne out.

Changes in market conditions will not have the same impact on all types of securities. Interest rates have been unusually low in recent years in the United States and abroad. Because there is little precedent for this situation, it is difficult to predict the impact of a significant rate increase on various markets. For example, because investors may buy securities or other investments with borrowed money, a significant increase in interest rates may cause a decline in the markets for those investments. Because of the sharp decline in the worldwide price of oil, there is a concern that oil producing nations may withdraw significant assets now held in U.S. Treasuries, which could force a substantial increase in interest rates. Regulators have expressed concern that rate increases may cause investors to sell fixed income securities faster than the market can absorb them, contributing to price volatility. In addition, there is a risk that the prices of goods and services in the U.S. and many foreign economies may decline over time, known as deflation (the opposite of inflation). Deflation may have an adverse effect on stock prices and creditworthiness and may make defaults on debt more likely. If a country’s economy slips into a deflationary pattern, it could last for a prolonged period and may be difficult to reverse. The precise details and the resulting impact of the United Kingdom’s vote to leave the European Union (“EU”), commonly referred to as “Brexit,” are not yet known. The effect on the United Kingdom’s economy will likely depend on the nature of trade relations with the EU and other major economies following its exit, which are matters to be negotiated. The outcomes may cause increased volatility and have a significant adverse impact on world financial markets, other international trade agreements, and the United Kingdom and European economies, as well as the broader global economy for some time.

The impact of these developments in the near- and long-term is unknown and could have additional adverse effects on economies, financial markets and asset valuations around the world.

Market Disruption and Geopolitical Risk

The occurrence of events similar to those in recent years, such as the aftermath of the war in Iraq, instability in Afghanistan, Pakistan, Egypt, Libya, Syria, Russia, Ukraine and other parts of the Middle East, the outbreak of infectious diseases such as Ebola or the Zika Virus, terrorist attacks in the U.S. and around the world, social and political discord, debt crises (such as the recent Greek crisis), sovereign debt downgrades, or the exit or potential exit of one or more countries from the EU, among others, may result in market volatility, may have long-term effects on the U.S. and worldwide financial markets, and may cause further economic uncertainties in the U.S. and worldwide. The Fund does not know how long the securities markets may be affected by these events and cannot predict the effects of these and similar events in the future on the U.S. economy and securities markets. The Fund may be adversely affected by abrogation of international agreements and national laws which have created the market instruments in which the Fund may invest, failure of the designated national and international authorities to enforce compliance with the same laws and agreements, failure of local, national and international organization to carry out the duties prescribed to them under the relevant agreements, revisions of these laws and

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agreements which dilute their effectiveness or conflicting interpretation of provisions of the same laws and agreements. The Fund may be adversely affected by uncertainties such as terrorism, international political developments, and changes in government policies, taxation, restrictions on foreign investment and currency repatriation, currency fluctuations and other developments in the laws and regulations of the countries in which it is invested.

Legislation and Regulatory Risk

At any time after the date of this Prospectus, legislation or additional regulations may be enacted that could negatively affect the assets of the Fund, securities held by the Fund or the issuers of such securities. Changing approaches to regulation may have a negative impact on the entities and/or securities in which the Fund invests. Legislation or regulation may also change the way in which the Fund itself is regulated. Fund shareholders may incur increased costs resulting from such legislation or additional regulation. There can be no assurance that future legislation, regulation or deregulation will not have a material adverse effect on the Fund or will not impair the ability of the Fund to achieve its investment objective.

For example, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) is designed to impose stringent regulation on the OTC derivatives market in an attempt to increase transparency and accountability and provides for, among other things, new clearing, execution, margin, reporting, recordkeeping, business conduct, disclosure, position limit, minimum net capital and registration requirements. Although the Commodity Futures Trading Commission (“CFTC”) has released final rules under the Dodd-Frank Act, many of the provisions are subject to further final rulemaking, and thus the Dodd-Frank Act’s ultimate impact remains unclear.

The SEC recently proposed rules governing the use of derivatives by registered investment companies, which could affect the nature and extent of derivatives use by the Fund. The proposed rules have not yet been adopted and therefore the full impact of such rules is uncertain at this time. It is possible that such rules, if adopted, could limit the implementation of the Fund’s use of derivatives, which could have an adverse effect on the Fund.

Additionally, the Fund is operated by persons who have claimed an exclusion, granted to operators of registered investment companies like the Fund, from registration as a “commodity pool operator” under Rule 4.5 promulgated by the CFTC pursuant to its authority under the Commodity Exchange Act and, therefore, is not subject to registration or regulation as a “commodity pool operator.” As a result, the Fund is limited in its ability to use commodity futures (which include futures on broad-based securities indexes and interest rate futures) or options on commodity futures, engage in swaps transactions or make certain other investments (whether directly or indirectly through investments in other investment vehicles) for purposes other than bona fide hedging. With respect to transactions other than for bona fide hedging purposes, either: (1) the aggregate initial margin and premiums required to establish the Fund’s positions in such investments may not exceed 5% of the liquidation value of the Fund’s portfolio (after accounting for unrealized profits and unrealized losses on any such investments); or (2) the aggregate net notional value of such instruments, determined at the time the most recent position was established, may not exceed 100% of the liquidation value of the Fund’s portfolio (after accounting for unrealized profits and unrealized losses on any such positions). In addition to meeting one of the foregoing trading limitations, the Fund may not market itself as a commodity pool or otherwise as a vehicle for trading in the futures, options or swaps markets. If the Fund does not continue to claim the exclusion, it would likely become subject to registration and regulation as a commodity pool operator. The Fund may incur additional expenses as a result of the CFTC’s registration and regulatory requirements.

Impact of Offering Methods Risk

The issuance of Common Shares through the various methods described in the Prospectus may have an adverse effect on prices in the secondary market for the Fund’s Common Shares by increasing the number of Common Shares available for sale. In addition, the Common Shares may be issued at a discount to the market price for such shares, which may put downward pressure on the market price for Common Shares of the Fund.

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Not an Index Fund

The Fund is not, nor is it intended to be, an index fund. As a result, the performance of the Fund will differ from the performance of the DJIA as a whole for various reasons, including the fact that the Fund will write call options on a portion of the Equity Portfolio. The Fund, by writing call options on the Equity Portfolio, will give up the opportunity to benefit from potential increases in the value of the Equity Portfolio above the exercise prices of the options, but will continue to bear the risk of declines in the value of the Equity Portfolio. See “Call Option Risk” below.

Equity Portfolio Risks

Common Stock Risk.     Common stock generally represents an equity ownership interest in an issuer. Although common stocks have historically generated higher average total returns than fixed-income securities over the long term, common stocks also have experienced significantly more volatility in those returns and may under-perform relative to fixed-income securities during certain periods. An adverse event, such as an unfavorable earnings report, may depress the value of a particular common stock held by the Fund. Also, prices of common stocks are sensitive to general movements in the stock market and a drop in the stock market may depress the price of common stocks to which the Fund has exposure. Common stock prices fluctuate for several reasons including changes in investors’ perceptions of the financial condition of an issuer or the general condition of the relevant stock market, or the occurrence of political or economic events which effect the issuers. In addition, common stock prices may be particularly sensitive to rising interest rates, which increases borrowing costs and the costs of capital.

Dividend Income Risk.     A portion of the Fund’s net investment income paid by the Fund to its Common Shareholders is derived from dividends it receives from common stocks held in the Fund’s Equity Portfolio. Dividends paid on the securities held by the Fund can vary significantly over the short-term and long-term. Dividends on common stocks are not fixed but are declared at the discretion of an issuer’s board of directors. There is no guarantee that the issuers of common stocks in which the Fund invests will declare dividends in the future or that if declared they will remain at current levels or increase over time.

Option Strategy Risks

Call Option Risk.     As the writer of a call option, the Fund foregoes, during the option’s life, the opportunity to profit from increases in the market value of the security underlying the call option above the sum of the premium and the strike price of the option, but will retain the risk of loss should the market value of the security underlying the call option decline. The purchaser of the call option has the right to any appreciation in the value of the underlying security over the exercise price upon the exercise of the call option or the expiration date. As the Fund increases the option overlay percentage, its ability to benefit from capital appreciation becomes more limited and the risk of NAV erosion increases. If the Fund experiences NAV erosion, which itself may have a negative effect on the market price of the Fund’s shares, the Fund will have a reduced asset base over which to write call options, which may eventually lead to reduced distributions to shareholders.

In addition, because the exercise of index options is settled in cash, sellers of index call options, such as the Fund, cannot provide in advance for their potential settlement obligations by acquiring and holding the underlying securities. The Fund bears a risk that the value of the securities held by the Fund will vary from the value of the DJIA and relative to the written index call option positions. Accordingly, the Fund may incur losses on the index call options that it has sold that exceed gains on the Fund’s equity portfolio. The value of index options written by the Fund, which will be priced daily, will be affected by changes in the value of and dividend rates of the underlying common stocks in the index, changes in the actual or perceived volatility of the stock market and the remaining time to the options’ expiration. The value of the index options also may be adversely affected if the market for the index options becomes less liquid or smaller.

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To the extent the Fund purchases call options, the Fund would bear the risk of losing the entire premium if the price of the underlying security did not rise sufficiently, or if it did not do so before the option expired. The purchase of call options for capital appreciation may increase the Fund’s volatility by increasing the impact of changes in the market price of the underlying securities on the Fund’s NAV.

Call Spreads Risk.     The Fund may enter into call spreads. A call spread involves the sale of a call option and the corresponding purchase of a call option on the same underlying security, index or instrument with the same expiration date but with different strike prices. In entering into call spreads, the Fund generally will sell an at-the-money or out-of-the-money call option and purchase an out-of-the-money option that has a strike price higher than the strike price of the call option written by the Fund. The Fund may not be able to enter into (or close out of) these transactions, at times or in the quantities desired by NFALLC. The Fund also may not be able to enter into (or close out of) these transactions because of, among other things, the lack of market participants that are willing to take contrary positions to that of the Fund.

Put Option Risk.     By writing put options, the Fund takes on the risk of declines in the value of the underlying instrument, including the possibility of a loss up to the entire strike price of each option it sells but without the corresponding opportunity to benefit from potential increases in the value of the underlying instrument. When the Fund writes a put option, it assumes the risk that it must purchase the underlying instrument at a strike price that may be higher than the market price of the instrument. If there is a broad market decline and the Fund is not able to close out its written put options, it may result in substantial losses to the Fund. The Fund will receive a premium from writing options, but the premium received may not be sufficient to offset any losses sustained from exercised put options.

Option Strategy Risk.     In employing the Option Strategy, Nuveen Asset Management seeks to reduce downside risk and volatility of the Equity Portfolio. The strategy may not work as intended and may result in losses or periods of underperformance, particularly during periods when market values are increasing but market volatility is high. The success of the Option Strategy will be subject to Nuveen Asset Management’s ability to correctly assess the degree of correlation between the performance of the DJIA and the metrics used by Nuveen Asset Management to measure market volatility. Because the characteristics of many securities change as markets change or time passes, the success of the Option Strategy also will be subject to Nuveen Asset Management’s ability to continually recalculate, readjust, and execute volatility management techniques in an efficient manner. In addition, market conditions change, sometimes rapidly and unpredictably, and Nuveen Asset Management may be unable to execute the volatility management strategy in a timely manner or at all. Moreover, volatility management strategies may increase portfolio transaction costs, which could cause or increase losses or reduce gains. For a variety of reasons, Nuveen Asset Management may not seek to establish a perfect correlation between the relevant market index and the metrics that Nuveen Asset Management uses to measure market volatility. In addition, it is not possible to manage volatility fully or perfectly. Any one or more of these factors may prevent the Fund from achieving the intended volatility management or could cause the Fund to underperform or experience losses (some of which may be sudden) or volatility for any particular period that may be higher or lower. In addition, the use of volatility management techniques may not protect against market declines and may limit the Fund’s participation in market gains, even during periods when the market is rising. Volatility management techniques, when implemented effectively to reduce the overall risk of investing in the Fund, may result in underperformance by the Fund. The Fund’s performance may be lower than the performance of similar funds where volatility management techniques are not used.

Tax Risk

The tax treatment and characterization of the Fund’s distributions may vary significantly from time to time because of the varied nature of the Fund’s investments. The ultimate tax characterization of the Fund’s distributions made in a calendar year may not finally be determined until after the end of that calendar year. In addition, there is a possibility that the Fund may make total distributions during a calendar year in an amount that exceeds the Fund’s net investment income and net realized capital gains for that calendar year. For example,

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because of the nature of the Fund’s investments, the Fund may distribute net short-term capital gains early in the calendar year, but incur net short-term capital losses later in the year, thereby offsetting the short-term net capital gains for which distributions have already been made by the Fund. In such a situation, the amount by which the Fund’s total distributions exceed net investment income and net realized capital gains would generally be treated as a tax-free return of capital up to the amount of the Common Shareholder’s tax basis in his Common Shares, with any amounts exceeding such basis treated as gain from the sale of his Common Shares. While a portion of the Fund’s income distributions may be classified as “qualified dividend income,” which is generally taxable to individual investors who meet certain holding period and other requirements at a lower rate, there can be no assurance as to the percentage of the Fund’s income distributions that will be “qualified dividend income.” The writing of call options by the Fund may significantly reduce or eliminate its ability to make distributions eligible to be treated as qualified dividend income. Covered call options may also be subject to the federal tax rules applicable to straddles under the Code. If positions held by the Fund were treated as “straddles” for federal income tax purposes, dividends on such positions would not constitute qualified dividend income subject to favorable income tax treatment. In addition, generally, straddles are subject to certain rules that may affect the amount, character and timing of the Fund’s gains and losses with respect to straddle positions by requiring, among other things, that: (1) any loss realized on disposition of one position of a straddle may not be recognized to the extent that the Fund has unrealized gains with respect to the other position in such straddle; (2) the Fund’s holding period in straddle positions be suspended while the straddle exists (possibly resulting in a gain being treated as short-term capital gain rather than long-term capital gain); (3) the losses recognized with respect to certain straddle positions that are part of a mixed straddle and that are non-Section 1256 contracts be treated as 60% long-term and 40% short-term capital loss; (4) losses recognized with respect to certain straddle positions that would otherwise constitute short-term capital losses be treated as long-term capital losses; and (5) the deduction of interest and carrying charges attributable to certain straddle positions may be deferred. The Fund currently intends to manage the Option Strategy generally in order to avoid being subject to the “straddle rules” under federal income tax law. The Fund expects that positions held under this strategy will not be considered straddles under federal income tax law because the Fund’s options transactions will constitute “qualified covered call options” and such positions will not be part of a larger straddle. A qualified covered call option is generally any option granted by the Fund to purchase stock it holds (or stock it acquires in connection with granting the option) if, among other things, (1) the option is traded on a national securities exchange that is registered with the SEC or other market the IRS determined has rules adequate to carry out the purposes of the applicable Code provision, (2) the option is granted more than 30 days before it expires, (3) the option is not a “deep-in-the-money option,” (4) such option is not granted by an options dealer in connection with his activity of dealing in options, and (5) gain or loss with respect to the option is not ordinary income or loss. Under certain circumstances, however, the Fund may enter into option transactions or certain other investments that may constitute positions in a straddle.

Non-Diversification Risk

Because the Fund is classified as “non-diversified” under the 1940 Act, it can invest a greater portion of its assets in obligations of a single issuer than a “diversified” fund. As a result, the Fund will be more susceptible than a diversified fund to fluctuations in the prices of securities of a single issuer.

Non-U.S. Issuer Risk

The Fund may invest in securities of non-U.S. issuers that are U.S. dollar-denominated, which may include securities of issuers located, or conducting their business, in emerging market countries. Investments in securities of non-U.S. issuers involve special risks not presented by investments in securities of U.S. issuers, including the following: (i) less publicly available information about non-U.S. issuers or markets due to less rigorous disclosure or accounting standards or regulatory practices; (ii) many non-U.S. markets are smaller, less liquid and more volatile, meaning that, in a changing market, the Fund may not be able to sell its portfolio securities at times, in amounts or at prices it considers reasonable; (iii) potential adverse effects of fluctuations in currency exchange rates or controls on the value of the Fund’s investments; (iv) the economies of non-U.S. countries may grow at

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slower rates than expected or may experience a downturn or recession; (v) the impact of economic, political, social or diplomatic events; (vi) possible seizure, expropriation or nationalization of the company or its assets; (vii) certain non-U.S. countries may impose restrictions on the ability of non-U.S. issuers to make payments of principal and/or interest to investors located outside the U.S., due to blockage of foreign currency exchange or otherwise and (viii) withholding and other non-U.S. taxes may decrease the Fund’s return. These risks are more pronounced to the extent that the Fund invests in securities of issuers in emerging market countries.

Economies and social and political climates in individual countries may differ unfavorably from the U.S. Non-U.S. economies may have less favorable rates of growth of gross domestic product, rates of inflation, currency valuation, capital reinvestment, resource self-sufficiency and balance of payments positions. Many countries have experienced substantial, and in some cases extremely high, rates of inflation for many years. Unanticipated economic, political and social developments may also affect the values of the Fund’s investments and the availability to the Fund of additional investments in such countries.

Debt Securities Risk

The Fund’s investments in debt securities are generally subject to issuer credit risk and interest rate risks. Issuers of debt instruments in which the Fund may invest may default on their obligations to pay principal or interest when due. This non-payment would result in a reduction of income to the Fund, a reduction in the value of a debt instrument experiencing non-payment and, potentially, a decrease in the NAV of the Fund. To the extent that the credit rating assigned to a security in the Fund’s portfolio is downgraded, the market price and liquidity of such security may be adversely affected. Interest rate risk is the risk that fixed-rate debt instruments will decline in value because of changes in market interest rates. When market interest rates rise, the market value of such instruments generally will fall.

Illiquid Securities Risk

The Fund may invest in securities and other instruments that, at the time of investment, are illiquid. Illiquid securities are securities that are not readily marketable and may include some restricted securities, which are securities that may not be resold to the public without an effective registration statement under the 1933 Act or, if they are unregistered, may be sold only in a privately negotiated transaction or pursuant to an exemption from registration. Illiquid securities involve the risk that the securities will not be able to be sold at the time desired by the Fund or at prices approximating the value at which the Fund is carrying the securities on its books.

Counterparty Risk

Changes in the credit quality of the companies that serve as the Fund’s counterparties with respect to OTC options, derivatives or other transactions supported by another party’s credit may affect the value of those instruments. Certain entities that have served as counterparties to these transactions in the past have incurred significant losses and financial hardships, including bankruptcy, as a result of significant exposure to credit investments that have experienced defaults or otherwise suffered extreme credit deterioration. Such hardships reduced these entities’ capital and called into question their continued ability to perform their obligations. There can be no assurance that the counterparties to the Fund’s OTC options or other derivative instruments will not suffer similar financial hardships in the future. By using OTC options, derivatives or other transactions supported by a counterparty’s credit, the Fund assumes the risk that the counterparty could experience similar financial hardships. In the event of the insolvency of a counterparty, the Fund may sustain losses or be unable to liquidate a derivatives position.

Repurchase Agreement Risk

With respect to repurchase agreements, if the party agreeing to repurchase specific securities should default, the Fund may seek to sell the securities that it holds. This could involve transaction costs or delays in addition to

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a loss on the securities if their value should fall below their repurchase price. Repurchase agreements maturing in more than seven days are considered to be illiquid securities.

Inflation Risk

Inflation risk is the risk that the value of assets or income from investment will be worth less in the future as inflation decreases the value of money. As inflation increases, the real value of the Common Shares and distributions thereon can decline.

Deflation Risk

Deflation risk is the risk that prices throughout the economy decline over time, which may have an adverse effect on the market valuation of companies, their assets and revenues. In addition, deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund’s portfolio.

Certain Affiliations

Certain broker-dealers may be considered to be affiliated persons of the Fund, NFALLC, TIAA, and/or Nuveen Investments. Absent an exemption from the SEC or other regulatory relief, the Fund is generally precluded from effecting certain principal transactions with affiliated brokers, and its ability to purchase securities being underwritten by an affiliated broker or a syndicate including an affiliated broker, or to utilize affiliated brokers for agency transactions, is subject to restrictions. This could limit the Fund’s ability to engage in securities transactions and take advantage of market opportunities. See also “Management of the Fund—Investment Adviser, Sub-Adviser, and Portfolio Managers.”

Cybersecurity Risk

Technology, such as the internet, has become more prevalent in the course of business, and as such, the Fund and its service providers are susceptible to operational and information security risk resulting from cyber incidents. Cyber incidents refer to both intentional attacks and unintentional events including: processing errors, human errors, technical errors including computer glitches and system malfunctions, inadequate or failed internal or external processes, market-wide technical-related disruptions, unauthorized access to digital systems (through “hacking” or malicious software coding), computer viruses, and cyber-attacks which shut down, disable, slow or otherwise disrupt operations, business processes or website access or functionality (including denial of service attacks). Cyber incidents could adversely impact the Fund and cause the Fund to incur financial loss and expense, as well as face exposure to regulatory penalties, reputational damage, and additional compliance costs associated with corrective measures. Cyber incidents may cause a Fund or its service providers to lose proprietary information, suffer data corruption, lose operational capacity or fail to comply with applicable privacy and other laws. Among other potentially harmful effects, cyber incidents also may result in theft, unauthorized monitoring and failures in the physical infrastructure or operating systems that support the Fund and its service providers. In addition, substantial costs may be incurred in order to prevent any cyber incidents in the future. While the Fund’s service providers have established business continuity plans in the event of, and risk management systems to prevent, such cyber incidents, there are inherent limitations in such plans and systems including the possibility that certain risks have not been identified. Furthermore, the Fund cannot control the cybersecurity plans and systems put in place by its service providers or any other third parties whose operations may affect the Fund.

Other Investment Companies Risk

The Fund may invest in the securities of other investment companies. Such securities may be leveraged. As a result, the Fund may be indirectly exposed to leverage through an investment in such securities and therefore magnify the Fund’s leverage risk. Utilization of leverage is a speculative investment technique and involves

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certain risks. An investment in securities of other investment companies that are leveraged may expose the Fund to higher volatility in the market value of such securities and the possibility that the Fund’s long-term returns on such securities (and, indirectly, the long-term returns of the Common Shares) will be diminished.

Derivatives Risk, Including the Risk of Swaps

The Fund’s use of derivatives involves risks different from, and possibly greater than, the risks associated with investing directly in the investments underlying the derivatives. Whether the Fund’s use of derivatives is successful will depend on, among other things, if NFALLC and Nuveen Asset Management correctly forecast market values, interest rates and other applicable factors. If NFALLC and Nuveen Asset Management incorrectly forecast these and other factors, the investment performance of the Fund will be unfavorably affected. In addition, the derivatives market is largely unregulated. It is possible that developments in the derivatives market could adversely affect the Fund’s ability to successfully use derivative instruments.

The Fund may enter into debt-related derivatives instruments including credit default swap contracts and interest rate swaps. Like most derivative instruments, the use of swaps is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio securities transactions. In addition, the use of swaps requires an understanding by Nuveen Asset Management not only of the referenced asset, rate or index, but also of the swap itself. Because they are two-party contracts and because they may have terms of greater than seven days, swap agreements may be considered to be illiquid. Moreover, the Fund bears the risk of loss of the amount expected to be received under a swap agreement in the event of the default or bankruptcy of a swap agreement counterparty. It is possible that developments in the swaps market, including potential government regulation, could adversely affect the Fund’s ability to terminate existing swap agreements or to realize amounts to be received under such agreements. The derivatives market is subject to a changing regulatory environment. It is possible that regulatory or other developments in the derivatives market could adversely affect the Fund’s ability to successfully use derivative instruments. See also, “—Counterparty Risk.”

Management Risk

The Fund is subject to management risk because it is an actively managed portfolio. Nuveen Asset Management and NFALLC will apply investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these will produce the desired results. Nuveen Asset Management and NFALLC may err, for example, in the methodologies and strategies they choose to employ in seeking to track the return and risk characteristics of the DJIA.

Potential Conflicts of Interest Risk

NFALLC and Nuveen Asset Management each provide a wide array of portfolio management and other asset management services to a mix of clients and may engage in ordinary course activities in which their respective interests or those of their clients may compete or conflict with those of the Fund. For example, NFALLC and Nuveen Asset Management may provide investment management services to other funds and accounts that follow investment objectives similar to those of the Fund. In certain circumstances, and subject to its fiduciary obligations under the Investment Advisers Act of 1940, Nuveen Asset Management may have to allocate a limited investment opportunity among its clients, which include closed-end funds, open-end funds and other commingled funds. NFALLC and Nuveen Asset Management have each adopted policies and procedures designed to address such situations and other potential conflicts of interests.

Anti-Takeover Provisions

The Fund’s Declaration includes provisions that could limit the ability of other entities or persons to acquire control of the Fund or convert the Fund to open-end status. These provisions could have the effect of depriving the Common Shareholders of opportunities to sell their Common Shares at a premium over the then current market price of the Common Shares. See “Certain Provisions in the Declaration of Trust.”

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MANAGEMENT OF THE FUND

Trustees and Officers

The Board is responsible for the management of the Fund, including supervision of the duties performed by NFALLC. The names and business addresses of the trustees and officers of the Fund and their principal occupations and other affiliations during the past five years are set forth under “Management of the Fund” in the SAI.

Investment Adviser, Sub-Adviser, and Portfolio Managers

Investment Adviser.     Nuveen Fund Advisors, LLC, the Fund’s investment adviser, is responsible for overseeing the Fund’s overall investment strategy and its implementation. NFALLC offers advisory and investment management services to a broad range of investment company clients. NFALLC has overall responsibility for management of the Fund, oversees the management of the Fund’s portfolio, manages the Fund’s business affairs and provides certain clerical, bookkeeping and other administrative services. NFALLC is located at 333 West Wacker Drive, Chicago, Illinois 60606. NFALLC is a subsidiary of Nuveen, the investment management arm of TIAA. TIAA is a life insurance company founded in 1918 by the Carnegie Foundation for the Advancement of Teaching and is the companion organization of College Retirement Equities Fund. As of June 30, 2018, Nuveen managed approximately $973 billion in assets, of which approximately $141 billion was managed by NFALLC.

Sub-Adviser.     Nuveen Asset Management, LLC, 333 West Wacker Drive, Chicago, Illinois 60606, serves as the Fund’s sub-adviser pursuant to a sub-advisory agreement between NFALLC and Nuveen Asset Management (the “Sub-Advisory Agreement”). Nuveen Asset Management is a registered investment adviser and a wholly-owned subsidiary of NFALLC. Nuveen Asset Management oversees the day-to-day investment operations of the Fund. Pursuant to the Sub-Advisory Agreement, Nuveen Asset Management is compensated for the services it provides to the Fund with a portion of the management fee NFALLC receives from the Fund. NFALLC and Nuveen Asset Management retain the right to reallocate investment advisory responsibilities and fees between themselves in the future.

Portfolio Management.     Nuveen Asset Management is responsible for the execution of specific investment strategies and day-to-day investment operations of the Fund. Nuveen Asset Management manages the Nuveen funds using a team of analysts and portfolio managers that focuses on a specific group of funds. The day-to-day operation of the Fund and the execution of its specific investment strategies is the primary responsibility of David Friar and Jody Hrazanek, the designated portfolio managers of the Fund since 2014 and 2018, respectively.

Mr. Friar, Senior Vice President and Portfolio Manager of Nuveen Asset Management since January 2011, entered the financial services industry in 1998. He joined Nuveen Asset Management in January 2011 following the firm’s acquisition of a portion of the asset management business of FAF Advisors. Mr. Friar previously served in various positions with FAF Advisors since 1999 where he served as a member of FAF’s Performance Measurement group.

Ms. Hrazanek joined Nuveen in May 2018 from Voya Investment Management where she was head of Strategy Design and Implementation from 2005 to 2018. In this role, she was portfolio manager for a number of multi-asset strategies including target date, portable alpha and option overlay strategies. Prior to Voya, Ms. Hrazanek worked at Advent Capital Management from 2003 to 2005 as a convertible bond trader for both long-only and hedge fund portfolios.

Additional information about each portfolio manager’s compensation, other accounts managed by each portfolio manager and each portfolio manager’s ownership of securities in the Fund is provided in the SAI. The SAI is available free of charge by calling (800) 257-8787 or by visiting the Fund’s website at www.nuveen.com. The information contained in, or that can be accessed through, the Fund’s website is not part of this Prospectus or the SAI.

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Investment Management and Sub-Advisory Agreements

Investment Management Agreement .     Pursuant to an investment management agreement between NFALLC and the Fund (the “Investment Management Agreement”), the Fund has agreed to pay an annual management fee for the services and facilities provided by NFALLC, payable on a monthly basis, based on the sum of a fund-level fee and a complex-level fee, as described below.

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

Complex-Level Fee.     The annual complex-level fee for the Fund, payable monthly, is calculated by multiplying the current complex-wide fee rate, determined according to the following schedule, by the Fund’s daily managed assets:

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A discussion regarding the basis for the Board’s most recent approval of the Investment Management Agreement for the Fund may be found in the Fund’s semi-annual report to shareholders dated June 30 of each year.

In addition to the fee of NFALLC, the Fund pays all other costs and expenses of its operations, including compensation of its Trustees (other than those affiliated with NFALLC and Nuveen Asset Management), custodian, transfer agency and dividend disbursing expenses, legal fees, expenses of independent auditors, expenses of repurchasing shares, expenses associated with any borrowings, expenses of issuing any preferred shares, expenses of preparing, printing and distributing shareholder reports, notices, proxy statements and reports to governmental agencies, and taxes, if any. All fees and expenses are accrued daily and deducted before payment of dividends to investors.

Sub-Advisory Agreement.     Pursuant to the Sub-Advisory Agreement, Nuveen Asset Management receives from NFALLC a management fee equal to 0.3900% of the Fund’s average daily Managed Assets payable on a monthly basis. NFALLC and Nuveen Asset Management retain the right to reallocate investment advisory responsibilities and fees between themselves in the future.

A discussion regarding the basis for the Board’s most recent approval of the Sub-Advisory Agreement for the Fund may be found in the Fund’s semi-annual report to shareholders dated June 30 of each year.

NET ASSET VALUE

The Fund will determine the NAV of its shares daily, as of the close of regular session trading on the NYSE (normally 4:00 p.m. New York time). NAV is computed by dividing the value of all assets of the Fund (including accrued interest and dividends), less all liabilities (including accrued expenses and dividends declared but unpaid), by the total number of shares outstanding.

For purposes of determining the NAV of the Fund, readily marketable portfolio securities listed on the NYSE are valued, except as indicated below, at the last sale price reflected on the consolidated tape at the close of the NYSE on the business day as of which such value is being determined. If there has been no sale on such day, the securities are valued at the mean of the closing bid and asked prices on such day. If no bid or asked prices are quoted on such day, then the security is valued by such method as the Board shall determine in good faith to reflect its fair market value. Readily marketable securities not listed on the NYSE but listed on other domestic exchanges or admitted to trading on the National Association of Securities Dealers Automated Quotations, Inc. (“Nasdaq”) national list are valued in a like manner except that Nasdaq national list securities are valued using the Nasdaq official closing price for such securities. Portfolio securities traded on more than one securities exchange are valued at the last sale price on the business day as of which such value is being determined as reflected on the tape at the close of the exchange representing the principal market for such securities. Prices of certain ADRs that trade in only limited volume in the U.S. are valued based on the mean between the most recent bid and ask price of the underlying foreign-traded stock, adjusted as appropriate for underlying-to-ADR conversion ratio and foreign exchange rate, and from time to time may be adjusted further to take into account material events that may take place after the close of the local foreign market but before the close of the NYSE.

Readily marketable securities traded in the OTC market, including listed securities whose primary market is believed by an Adviser to be OTC, but excluding securities admitted to trading on the Nasdaq national list, are valued at the mean of the current bid and asked prices as reported by Nasdaq or, in the case of securities not quoted by Nasdaq, the National Quotation Bureau or such other comparable source as the Board deem appropriate to reflect their fair market value. However, certain fixed-income securities may be valued on the basis of prices provided by a pricing service when such prices are believed by the Board to reflect the fair market value of such securities. The prices provided by a pricing service take into account institutional size trading in similar groups of securities and any developments related to specific securities. Where securities are traded on

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more than one exchange and also OTC, the securities will generally be valued using the quotations the Board believes reflect most closely the value of such securities. In addition, if it is determined that market prices for a security are unavailable or inappropriate, the Board, or its designee, may determine the fair value for the security.

The Fund normally values index options at the average of the closing bid and the asked quotations. Under normal circumstances, closing index option quotations are considered to reflect the index option contract values as of the close of the NYSE and will be used to value the option contracts. If Nuveen Asset Management determines that closing index option quotations do not reflect index option values as of the close of the NYSE, the Board, or its designee, will determine the fair value for the index option.

If the Fund invests in debt securities, the Fund may use an independent pricing service to value debt securities at their market value or at a fair value determined by the independent pricing service. Any independent pricing service determining fair value will do so pursuant to procedures adopted by, or under the supervision of, the Board. The Fund will use the fair value method to value debt securities if the independent pricing service is unable to provide a market or fair value for them or if the market value provided by the independent pricing service is deemed unreliable, or if events occurring after the close of a securities market and before the Fund values its Managed Assets would materially affect NAV.

Securities that are fair valued may be valued at a price higher or lower than actual market quotations or the value determined by other funds using their own fair value procedures.

DISTRIBUTIONS

The Fund pays quarterly distributions stated in terms of a fixed cents per Common Share dividend rate that will be composed of supplemental amounts generally representing realized capital gains or, possibly, returns of capital representing unrealized capital gains. In addition, the Fund intends to distribute any net long-term capital gains to Common Shareholders as long-term capital gain dividends as frequently as quarterly. Quarterly distributions, including such supplemental amounts, are sometimes referred to as “managed distributions.” The Fund will seek to establish a distribution rate that roughly corresponds to NFALLC’s projections of the total return that could reasonably be expected to be generated by the Fund over an extended period of time, although the distribution rate will not be solely dependent on the amount of income earned or capital gains realized by the Fund. NFALLC, in making such projections, may consider long-term historical returns and a variety of other factors. Distributions can only be made after paying any interest and required principal payments on borrowings, if any, and any accrued dividends to preferred shareholders, if any. The distribution policy recognizes that many investors are willing to accept the potentially higher asset volatility of the Fund’s equity investments compared to fixed-income investment, but that prefer a consistent level of cash distributions be available each quarter for reinvestment or for other purposes of their choosing.

If, for any quarterly distribution, net investment income and net realized capital gains were less than the amount of the distribution, the difference would be distributed from the Fund’s assets. In addition, in order to make such distributions, the Fund might have to sell a portion of its investment portfolio at a time when independent investment judgment might not dictate such action. The Fund’s final distribution for each calendar year would include any remaining net investment income and net realized capital gains undistributed during the year. The Fund’s actual financial performance will likely vary significantly from month-to-month and from year-to-year, and there may be extended periods of up to several years, when the distribution rate will exceed the Fund’s actual total returns. The Fund’s projected or actual distribution rate is not a prediction of what the Fund’s actual total returns will be over any specific future period.

As portfolio and market conditions change, the rate of distributions on the Common Shares and the Fund’s distribution policy could change. To the extent that the total return of the Fund’s overall strategy exceeds the distribution rate for an extended period, the Fund may be in a position to increase the distribution rate or distribute

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supplemental amounts to shareholders. Conversely, if the total return of the Fund’s overall strategy is less than the distribution rate for an extended period of time, the Fund will effectively be drawing upon its NAV to meet payments prescribed by its distribution policy. Similarly, for tax purposes such distributions by the Fund may consist in part of a return of capital to Common Shareholders. The exact tax characteristics of the Fund’s distributions will not be known until after the Fund’s fiscal year-end. Common Shareholders should not confuse a return of capital distribution with “dividend yield” or “total return.” There is no assurance that the Fund will continue to make quarterly distributions of net long-term capital gains. Under the terms of an exemptive order from the SEC, the Fund’s Board is required to determine whether to continue the quarterly distribution of net long-term capital gains if: (i) the Common Shares have traded at an average premium to NAV equal to or greater than 10%, as determined on the basis of the average of the discount or premium to the NAV of the Common Shares as of the close of each trading day over a 12-week rolling period, and (ii) the Fund’s distribution rate for that 12-week rolling period, expressed as a percentage of NAV as of the ending date of the 12-week rolling period, is greater than the Fund’s average annual total return in relation to the change in NAV over the 2-year period ending on the last day of the 12-week rolling period.

At the same time that it pays a quarterly distribution, the Fund will post on its website (www.nuveen.com/cef), and make available in written form to holders of its Common Shares a notice of the estimated sources and tax characteristics of the Fund’s distributions ( i.e., what percentage of the distributions is estimated to constitute ordinary income, short-term capital gains, long-term capital gains, and/or a non-taxable return of capital) on a year-to-date basis, in compliance with a federal securities law requirement that any fund paying a distribution from sources other than net investment income disclose to shareholders the respective portion attributable to such other sources. These estimates may be based on certain assumptions about the Fund’s expected investment returns and the realization of net gains, if any, over the remaining course of the year. These estimates may, and likely will, vary over time based on the activities of the Fund and changes in the value of portfolio investments. The Fund expects that it will provide this type of information primarily on a tax basis, instead of on a generally accepted accounting principles (GAAP) basis, because experience has shown that fund shareholders are most concerned about the tax character of their distributions, and because the Fund expects that the distributions’ tax characteristics will fairly reflect the economic basis of the funds’ distributions and returns. The final determination of the source and tax characteristics of all distributions will be made after December 31 in each year, and reported to Common Shareholders on Form 1099-DIV early the following year.

As explained more fully below in “Tax Matters,” the Fund intends to distribute to Common Shareholders any net capital gain (which is the excess of net long-term capital gain over net short-term capital loss) for each taxable year through its managed distributions after making interest and required principal payments on borrowings and paying any accrued dividends or making any redemption or liquidation payments to preferred shareholders or, alternatively, to retain all or a portion of the year’s net capital gain and pay federal income tax on the retained gain. Each Common Shareholder of record as of the end of the Fund’s taxable year will include in income for federal income tax purposes, as long-term capital gain, his or her share of any retained gain, will be deemed to have paid his or her proportionate share of the tax paid by the Fund on such retained gain, and will be entitled to an income tax credit or refund for that share of the tax. The Fund may treat any retained capital gain amount as a substitute for equivalent cash distributions. In addition, the Fund may make total distributions during a given calendar year in an amount that exceeds the Fund’s net investment income and net capital gain for that calendar year, in which case the excess will generally be treated by shareholders as return of capital for tax purposes. Distributions treated as return of capital will reduce a shareholder’s basis in his or her Common Shares, which will generally result in an increase in the amount of gain (or decrease in the amount of loss) that the shareholder will recognize on his or her sale or other disposition of such Common Shares.

The Fund reserves the right to change its distribution policy and the basis for establishing the rate of its quarterly distributions at any time, subject to a finding by the Fund’s Board that such change is in the best interests of the Fund and its Common Shareholders.

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DIVIDEND REINVESTMENT PLAN

If your Common Shares are registered directly with the Fund or if you hold your Common Shares with a brokerage firm that participates in the Fund’s Dividend Reinvestment Plan (the “Plan”) your distributions, including any capital gain distributions, will automatically be reinvested in additional Common Shares under the Plan unless you request otherwise. If you elect not to participate in the Plan, or are not eligible to participate because your brokerage firm does not participate in the Plan, you will receive all distributions in cash paid by check mailed directly to you or your brokerage firm by Computershare Trust Company, N.A. and Computershare Inc. (collectively “Computershare”), as dividend paying agent (the “Plan Agent”). The tax consequences of a distribution are the same regardless of whether such distribution is reinvested or received in cash. See “Tax Matters.”

Under the Plan, the number of Common Shares you will receive will be determined as follows:

(1) If the Common Shares are trading at or above NAV at the time of valuation, the Fund will issue new shares at a price equal to the greater of (i) NAV per Common Share on that date or (ii) 95% of the market price on that date.

(2) If Common Shares are trading below NAV at the time of valuation, the Plan Agent will receive the dividend or distribution in cash and will purchase Common Shares in the open market, on the NYSE or elsewhere, for the participants’ accounts. It is possible that the market price for the Common Shares may increase before the Plan Agent has completed its purchases. Therefore, the average purchase price per share paid by the Plan Agent may exceed the market price at the time of valuation, resulting in the purchase of fewer shares than if the dividend or distribution had been paid in Common Shares issued by the Fund. The Plan Agent will use all dividends and distributions received in cash to purchase Common Shares in the open market within 30 days of the valuation date. Interest will not be paid on any uninvested cash payments. The Plan provides that if the Common Shares start trading at or above NAV before the Plan Agent has completed its purchases, the Plan Agent may cease purchasing Common Shares in the open market, and may invest the uninvested portion in new shares at a price equal to the greater of (i) NAV per Common Share on the last purchase date or (ii) 95% of the market price on that date.

You may withdraw from the Plan at any time by giving written notice to the Plan Agent. If you withdraw or the Plan is terminated, you will receive whole shares in your account under the Plan and you will receive a cash payment for any fraction of a share in your account. If you wish, the Plan Agent will sell your shares and send you the proceeds, minus brokerage commissions and a $2.50 service fee.

The Plan Agent maintains all shareholders’ accounts in the Plan and gives written confirmation of all transactions in the accounts, including information you may need for tax records. Common Shares in your account will be held by the Plan Agent in non-certificated form. Any proxy you receive will include all Common Shares you have received under the Plan.

There is no brokerage charge for reinvestment of your dividends or distributions in Common Shares. However, all participants will pay a pro rata share of brokerage commissions incurred by the Plan Agent when it makes open market purchases.

Automatically reinvesting dividends and distributions does not mean that you do not have to pay income taxes due upon receiving dividends and distributions.

As noted above, if you hold your Common Shares with a brokerage firm that does not participate in the Plan, you will not be able to participate in the Plan and any dividend reinvestment may be effected on different terms than those described above. Consult your financial adviser for more information.

The Fund reserves the right to amend or terminate the Plan if in the judgment of the Board the change is warranted. There is no direct service charge to participants in the Plan; however, the Fund reserves the right to

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amend the Plan to include a service charge payable by the participants. Additional information about the Plan may be obtained from Computershare, P.O. Box 505000, Louisville, Kentucky, 40233-5000 (800) 257-8787.

PLAN OF DISTRIBUTION

The Fund may sell the Common Shares offered under this Prospectus through

The Fund will bear the expenses of the offering, including but not limited to, the expenses of preparation of the Prospectus and SAI for the offering and the expense of counsel and auditors in connection with the offering.

Distribution Through At-The-Market Transactions

The Fund has entered into a distribution agreement with Nuveen Securities (the “Distribution Agreement”), which has been filed as an exhibit to the Registration Statement of which this Prospectus is a part. Subject to the terms and conditions of the Distribution Agreement, the Fund may from time to time issue and sell its Common Shares through Nuveen Securities to certain broker-dealers which have entered into selected dealer agreements with Nuveen Securities. Currently, Nuveen Securities has entered into a selected dealer agreement (the “Selected Dealer Agreement”) with Stifel Nicolaus pursuant to which Stifel Nicolaus will be acting as Nuveen Securities’ sub-placement agent with respect to at-the-market offerings of Common Shares. The Selected Dealer Agreement has been filed as an exhibit to the Registration Statement of which this Prospectus forms a part.

Common Shares will only be sold on such days as shall be agreed to by the Fund and Nuveen Securities. Common Shares will be sold at prevailing market prices through the National Market System, subject to a minimum price to be established each day by Nuveen Securities. The minimum price on any day will not be less than the current NAV per Common Share plus the per share amount of the commission to be paid to Nuveen Securities. The Fund, Nuveen Securities, and Stifel Nicolaus will suspend the sale of Common Shares if the per share price of the shares is less than the minimum price.

The Fund will compensate Nuveen Securities with respect to sales of the Common Shares at a commission rate of up to 1.0% of the gross proceeds of the sale of Common Shares. Nuveen Securities will compensate sub-placement agents or other broker-dealers participating in the offering at a rate of up to 0.8% of the gross proceeds of the sale of Common Shares sold by that sub-placement agent or broker-dealer. Settlements of sales of Common Shares will occur on the second business day following the date on which any such sales are made. In connection with the sale of the Common Shares on behalf of the Fund, Nuveen Securities may be deemed to be an underwriter within the meaning of the 1933 Act, and the compensation of Nuveen Securities may be deemed to be underwriting commissions or discounts. Unless otherwise indicated in a further Prospectus supplement, Nuveen Securities will act as underwriter on a reasonable efforts basis.

The offering of Common Shares pursuant to the Distribution Agreement will terminate upon the earlier of (i) the sale of all Common Shares subject thereto or (ii) termination of the Distribution Agreement. The Fund and Nuveen Securities each have the right to terminate the Distribution Agreement in its discretion at any time. The Fund currently intends to distribute the shares offered pursuant to this Prospectus through at-the-market transactions, although from time to time it may also distribute shares through an underwriting syndicate or a privately negotiated transaction. To the extent shares are distributed other than through at-the-market transactions, the Fund will file a supplement to this Prospectus describing such transactions.

The Fund’s closing price on the NYSE on September 14, 2018 was $19.28.

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Distribution Through Underwriting Syndicates

The Fund from time to time may issue additional Common Shares through a syndicated secondary offering. In order to limit the impact on the market price of the Fund’s Common Shares, underwriters will market and price the offering on an expedited basis ( e.g., overnight or similarly abbreviated offering period). The Fund will launch a syndicated offering on a day, and upon terms, mutually agreed upon between the Fund, Nuveen Securities, one of the Fund’s underwriters, and the underwriting syndicate.

The Fund will offer its shares at a price equal to a specified discount of up to 5% from the closing market price of the Fund’s Common Shares on the day prior to the offering date. The applicable discount will be negotiated by the Fund and Nuveen Securities in consultation with the underwriting syndicate on a transaction-by-transaction basis. The Fund will compensate the underwriting syndicate out of the proceeds of the offering based upon a sales load of up to 4% of the gross proceeds of the sale of Common Shares. The minimum net proceeds per share to the Fund will not be less than the greater of (i) the Fund’s latest NAV per share of Common Shares or (ii) 91% of the closing market price of the shares of the Fund’s Common Shares on the day prior to the offering date.

Distribution Through Privately Negotiated Transactions

The Fund from time to time may sell directly to, and solicit offers from, institutional and other sophisticated investors, who may be deemed to be underwriters as defined in the 1933 Act for any resale of Common Shares.

The terms of such privately negotiated transactions will be subject to the discretion of the management of the Fund. In determining whether to sell Common Shares through a privately negotiated transaction, the Fund will consider relevant factors including, but not limited to, the attractiveness of obtaining additional funds through the sale of Common Shares, the purchase price to apply to any such sale of Common Shares and the person seeking to purchase the Common Shares.

Common Shares issued by the Fund through privately negotiated transactions will be issued at a price equal to the greater of (i) the NAV per share of the Fund’s Common Shares or (ii) at a discount ranging from 0% to 5% of the average daily closing market price of the Fund’s Common Shares at the close of business on the ten business days preceding the date upon which Common Shares are sold pursuant to the privately negotiated transaction. The applicable discount will be determined by the Fund on a transaction-by-transaction basis.

The principal business address of Nuveen Securities is 333 West Wacker Drive, Chicago, Illinois 60606.

DESCRIPTION OF SHARES

Common Shares

The Declaration authorizes the issuance of an unlimited number of Common Shares. The Common Shares being offered have a par value of $0.01 per share and, subject to the rights of holders of Preferred Shares, if issued, have equal rights to the payment of dividends and the distribution of assets upon liquidation. The Common Shares being offered will, when issued, be fully paid and, subject to matters discussed in “Certain Provisions in the Declaration of Trust,” non-assessable, and will have no preemptive or conversion rights or rights to cumulative voting. The Fund has no current intention of issuing Preferred Shares or incurring borrowings. However, if at some future time the Fund issues Preferred Shares and/or incurs borrowings, the Common Shareholders will not be entitled to receive any cash distributions from the Fund unless all accrued dividends on Preferred Shares and interest on borrowings have been paid, and (i) unless asset coverage (as defined in the 1940 Act) with respect to Preferred Shares would be at least 200% after giving effect to the distributions and (ii) unless asset coverage (again, as defined in the 1940 Act) with respect to any borrowings would be at least 300% after giving effect to the distributions. See “—Preferred Shares” below.

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The Common Shares are listed on the NYSE and trade under the ticker symbol “DIAX.” The Fund intends to hold annual meetings of shareholders so long as the Common Shares are listed on a national securities exchange and such meetings are required as a condition to such listing. The Fund will not issue share certificates.

Unlike open-end funds, closed-end funds like the Fund do not provide daily redemptions. Rather, if a shareholder determines to buy additional Common Shares or sell shares already held, the shareholder may conveniently do so by trading on the exchange through a broker or otherwise. Shares of closed-end investment companies may frequently trade on an exchange at prices lower than NAV. Shares of closed-end investment companies like the Fund have, during some periods, traded at prices higher than NAV and, during other periods, have traded at prices lower than NAV. Because the market value of the Common Shares may be influenced by such factors as distribution levels (which are in turn affected by expenses), distribution stability, NAV, relative demand for and supply of such shares in the market, general market and economic conditions, and other factors beyond the control of the Fund, the Fund cannot guarantee you that Common Shares will trade at a price equal to or higher than NAV in the future. The Common Shares are designed primarily for long-term investors, and investors in the Common Shares should not view the Fund as a vehicle for trading purposes. See the SAI under “Repurchase of Fund Shares; Conversion to Open-End Fund.”

Preferred Shares

As a non-fundamental policy, the Fund will not leverage its capital structure by issuing senior securities such as preferred shares or debt instruments. However, the Declaration authorizes the issuance of an unlimited number of Preferred Shares in one or more classes or series, with rights as determined by the Board, by action of the Board without the approval of the Common Shareholders. The terms of any Preferred Shares that may be issued by the Fund may be the same as, or different from, the terms described below, subject to applicable law and the Declaration.

Limited Issuance of Preferred Shares.     Under the 1940 Act, the Fund can issue Preferred Shares with an aggregate liquidation value of up to one-half of the value of the Fund’s total net assets, measured immediately after issuance of the Preferred Shares. “Liquidation value” means the original purchase price of the shares being liquidated plus any accrued and unpaid dividends. In addition, the Fund is not permitted to declare any cash dividend or other distribution on its Common Shares unless the liquidation value of the Preferred Shares is less than one-half of the value of the Fund’s total net assets (determined after deducting the amount of such dividend or distribution) immediately after the distribution.

Distribution Preference.     The Preferred Shares would have complete priority over the Common Shares as to distribution of assets.

Liquidation Preference.     In the event of any voluntary or involuntary liquidation, dissolution or winding up of the affairs of the Fund, holders of Preferred Shares would be entitled to receive a preferential liquidating distribution (expected to equal the original purchase price per share plus accumulated and unpaid dividends thereon, whether or not earned or declared) before any distribution of assets is made to holders of Common Shares.

Voting Rights.     Preferred Shares are required to be voting shares and to have equal voting rights with Common Shares. Except as otherwise indicated in this Prospectus or the SAI and except as otherwise required by applicable law, holders of Preferred Shares would vote together with Common Shareholders as a single class.

Holders of Preferred Shares, voting as a separate class, would be entitled to elect two of the Fund’s trustees (following the establishment of the Fund by an initial trustee, the Declaration provides for a total of no less than two and no more than fifteen trustees). The remaining trustees would be elected by Common Shareholders and holders of Preferred Shares, voting together as a single class. In the unlikely event that two full years of accrued dividends are unpaid on the Preferred Shares, the holders of all outstanding Preferred Shares, voting as a separate class, would be entitled to elect a majority of the Fund’s trustees until all dividends in arrears have been paid or

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declared and set apart for payment. In order for the Fund to take certain actions or enter into certain transactions, a separate class vote of holders of Preferred Shares would be required, in addition to the single class vote of the holders of Preferred Shares and Common Shares. See “Certain Provisions in the Declaration of Trust” and the SAI under “Description of Shares—Preferred Shares—Voting Rights.”

Redemption, Purchase and Sale of Preferred Shares.     The terms of the Preferred Shares may provide that they may be redeemed by the issuer at certain times, in whole or in part, at the original purchase price per share plus accumulated dividends. Any redemption or purchase of Preferred Shares by the Fund would reduce the leverage applicable to Common Shares, while any issuance of such shares by the Fund would increase such leverage.

In the event of any future issuance of Preferred Shares, the Fund likely would apply for ratings from an nationally recognized statistical rating organization (“NRSRO”). In such event, as long as Preferred Shares are outstanding, the composition of the Fund’s portfolio would reflect guidelines established by such NRSRO. Based on previous guidelines established by such NRSROs for the securities of other issuers, the Fund anticipates that the guidelines may impose asset coverage or portfolio composition requirements that are more stringent than those imposed on the Fund by the 1940 Act. However, at this time, no assurance can be given as to the nature or extent of the guidelines that may be imposed in connection with obtaining a rating of any Preferred Shares.

Borrowings

As a non-fundamental policy, the Fund will not leverage its capital structure by issuing senior securities such as preferred shares or debt instruments. However, the Declaration authorizes the Fund, without approval of the Common Shareholders, to borrow money. In this connection, the Fund may issue notes or other evidence of indebtedness (including bank borrowings or commercial paper) and may secure any such borrowings by mortgaging, pledging or otherwise subjecting as security the Fund’s assets. In connection with such borrowing, the Fund may be required to maintain minimum average balances with the lender or to pay a commitment or other fee to maintain a line of credit. Any such requirements would increase the cost of borrowing over the stated interest rate. Under the requirements of the 1940 Act, the Fund, immediately after any such borrowings, must have an “asset coverage” of at least 300%. With respect to any such borrowings, asset coverage means the ratio that the value of the total assets of the Fund, less all liabilities and indebtedness not represented by senior securities (as defined in the 1940 Act), bears to the aggregate amount of such borrowing represented by senior securities issued by the Fund. As with the issuance of Preferred Shares, certain types of borrowing may result in the Fund being subject to certain restrictions imposed by guidelines of one or more rating agencies that may issue ratings for commercial paper or notes issued by the Fund. Such restrictions may be more stringent than those imposed by the 1940 Act.

The rights of lenders to the Fund to receive interest on and repayment of principal of any such borrowings would be senior to those of the Common Shareholders, and the terms of any such borrowings may contain provisions that limit certain activities of the Fund, including the payment of dividends to Common Shareholders in certain circumstances. Further, the 1940 Act would (in certain circumstances) grant to the lenders to the Fund certain voting rights in the event of default in the payment of interest on or repayment of principal. In the event that such provisions would impair the Fund’s status as a RIC under the Code, the Fund would repay the borrowings. Any borrowing will likely be ranked senior or equal to all other existing and future borrowings of the Fund. The Fund also may borrow up to an additional 5% of its total assets for temporary purposes. See “Investment Restrictions” in the SAI.

CERTAIN PROVISIONS IN THE DECLARATION OF TRUST AND BY-LAWS

Under Massachusetts law, shareholders could, under certain circumstances, be held personally liable for the obligations of the Fund. However, the Declaration contains an express disclaimer of shareholder liability for

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debts or obligations of the Fund and requires that notice of such limited liability be given in each agreement, obligation or instrument entered into or executed by the Fund or the trustees. The Declaration further provides for indemnification out of the assets and property of the Fund for all loss and expense of any shareholder held personally liable for the obligations of the Fund. Thus, the risk of a shareholder incurring financial loss on account of shareholder liability is limited to circumstances in which the Fund would be unable to meet its obligations. The Fund believes that the likelihood of such circumstances is remote.

The Declaration includes provisions that could limit the ability of other entities or persons to acquire control of the Fund or to convert the Fund to open-end status. Specifically, the Declaration requires a vote by holders of at least two-thirds of the Common Shares and, if issued, Preferred Shares, voting together as a single class, except as described below, to authorize (1) a conversion of the Fund from a closed-end to an open-end investment company, (2) a merger or consolidation of the Fund, or a series or class of the Fund, with any corporation, association, trust or other organization or a reorganization of the Fund, or a series or class of the Fund, (3) a sale, lease or transfer of all or substantially all of the Fund’s assets (other than in the regular course of the Fund’s investment activities), (4) in certain circumstances, a termination of the Fund, or a series or class of the Fund or (5) a removal of trustees by shareholders, and then only for cause, unless, with respect to (1) through (4), such transaction has already been authorized by the affirmative vote of two-thirds of the total number of trustees fixed in accordance with the Declaration or the By-laws, in which case the affirmative vote of the holders of at least a majority of the Fund’s Common Shares and, if issued, Preferred Shares outstanding at the time, voting together as a single class, would be required; provided, however, that where only a particular class or series is affected (or, in the case of removing a trustee, when the trustee has been elected by only one class), only the required vote by the applicable class or series would be required. Approval of shareholders would not be required, however, for any transaction, whether deemed a merger, consolidation, reorganization or otherwise whereby the Fund issues shares in connection with the acquisition of assets (including those subject to liabilities) from any other investment company or similar entity. In the case of the conversion of the Fund to an open-end investment company, or in the case of any of the foregoing transactions constituting a plan of reorganization that adversely affects the holders of any outstanding Preferred Shares, the action in question would also require the affirmative vote of the holders of at least two-thirds of the Preferred Shares outstanding at the time, voting as a separate class, or, if such action has been authorized by the affirmative vote of two-thirds of the total number of trustees fixed in accordance with the Declaration or the By-laws, the affirmative vote of the holders of at least a majority of the Preferred Shares outstanding at the time, voting as a separate class. None of the foregoing provisions may be amended except by the vote of at least two-thirds of the Common Shares and, if issued, Preferred Shares, voting together as a single class. The votes required to approve the conversion of the Fund from a closed-end to an open-end investment company or to approve transactions constituting a plan of reorganization that adversely affects the holders of any outstanding Preferred Shares are higher than those required by the 1940 Act. The Board believes that the provisions of the Declaration relating to such higher votes are in the best interest of the Fund and its shareholders. See the SAI under “Certain Provisions in the Declaration of Trust.” The Board is divided into three classes, with each class serving a different term. This staggered Board structure could delay for up to two years the replacement of a majority of the Board.

The Declaration provides that the obligations of the Fund are not binding upon the trustees of the Fund individually, but only upon the assets and property of the Fund, and that the trustees shall not be liable for errors of judgment or mistakes of fact or law. Nothing in the Declaration, however, protects a trustee against any liability to which he would otherwise be subject by reason of willful misfeasance, bad faith, gross negligence or reckless disregard of the duties involved in the conduct of his office.

The provisions of the Declaration described above could have the effect of depriving the Common Shareholders of opportunities to sell their Common Shares at a premium over the then current market price of the Common Shares by discouraging a third party from seeking to obtain control of the Fund in a tender offer or similar transaction. The overall effect of these provisions is to render more difficult the accomplishment of a merger or the assumption of control by a third party. They provide, however, the advantage of potentially requiring persons seeking control of the Fund to negotiate with its management regarding the price to be paid and

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facilitating the continuity of the Fund’s investment objective and policies. The Board of the Fund has considered the foregoing anti-takeover provisions and concluded that they are in the best interests of the Fund and its Common Shareholders.

Reference should be made to the Declaration on file with the SEC for the full text of these provisions.

REPURCHASE OF FUND SHARES; CONVERSION TO OPEN-END FUND

The Fund is a closed-end investment company and as such its shareholders will not have the right to cause the Fund to redeem their shares. Instead, the Common Shares will trade in the open market at a price that will be a function of several factors, including distribution levels (which are in turn affected by expenses), NAV, distribution stability, relative demand for and supply of such shares in the market, general market and economic conditions and other factors. Because shares of closed-end investment companies may frequently trade at prices lower than NAV, the Fund’s Board has currently determined that, at least annually, it will consider action that might be taken to reduce or eliminate any material discount from NAV in respect of Common Shares, which may include the repurchase of such shares in the open market or in private transactions, the making of a tender offer for such shares at NAV, or the conversion of the Fund to an open-end investment company. The Fund cannot assure you that its Board will decide to take any of these actions, or that share repurchases or tender offers will actually reduce market discount. On August 7, 2018, the Fund’s Board renewed the Fund’s open market share repurchase program under which the Fund may repurchase up to 10% of its Common Shares. Since the inception of the Fund’s share repurchase program through September 14, 2018, the Fund has not repurchased any Common Shares under the program.

If the Fund converted to an open-end investment company, it would be required to redeem all Preferred Shares then outstanding (requiring in turn that it liquidate a portion of its investment portfolio), and the Common Shares would no longer be listed on the NYSE or elsewhere. In contrast to a closed-end investment company, shareholders of an open-end investment company may require the company to redeem their shares at any time (except in certain circumstances as authorized by the 1940 Act or the rules thereunder) at their NAV, less any redemption charge that is in effect at the time of redemption. As a result, conversion to open-end status may require changes in the management of the Fund’s portfolio in order to meet the liquidity requirements applicable to open-end funds. Because portfolio securities may have to be liquidated to meet redemptions, conversion could affect the Fund’s ability to meet its investment objective or to use certain investment policies and techniques described above. If converted to an open-end fund, the Fund expects to pay all redemptions in cash, but intends to reserve the right to pay redemption requests in a combination of cash or securities. If such partial payment in securities were made, investors may incur brokerage costs in converting such securities to cash. If the Fund were converted to an open-end fund, it is likely that new Common Shares would be sold at NAV plus a sales load. See the SAI under “Certain Provisions in the Declaration of Trust” for a discussion of the voting requirements applicable to the conversion of the Fund to an open-end investment company.

Before deciding whether to take any action if the Common Shares trade below NAV, the Board would consider all relevant factors, including the extent and duration of the discount, the liquidity of the Fund’s portfolio, the impact of any action that might be taken on the Fund or its shareholders, and market considerations. Based on these considerations, even if the Fund’s shares should trade at a discount, the Board may determine that, in the interest of the Fund and its shareholders, no action should be taken. See the SAI under “Repurchase of Fund Shares; Conversion to Open-End Fund” for a further discussion of possible action to reduce or eliminate such discount to NAV.

TAX MATTERS

The following is a general summary of certain U.S. federal income tax consequences that may be relevant to a shareholder that acquires, holds and/or disposes of shares of the Fund. This discussion only addresses U.S.

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federal income tax consequences to U.S. shareholders who hold their shares as capital assets and does not address all of the U.S. federal income tax consequences that may be relevant to particular shareholders in light of their individual circumstances. This discussion also does not address the tax consequences to shareholders who are subject to special rules, including, without limitation, shareholders with large positions in the Fund, financial institutions, insurance companies, dealers in securities or foreign currencies, foreign holders, persons who hold their shares as or in a hedge against currency risk, a constructive sale, or conversion transaction, holders who are subject to the federal alternative minimum tax, or tax-exempt or tax-deferred plans, accounts, or entities. In addition, the discussion does not address any state, local, or foreign tax consequences. The discussion reflects applicable tax laws of the United States as of the date of this Prospectus, which tax laws may be changed or subject to new interpretations by the courts or the Internal Revenue Service (“IRS”) retroactively or prospectively. No attempt is made to present a detailed explanation of all U.S. federal income tax concerns affecting the Fund and its shareholders, and the discussion set forth herein does not constitute tax advice. Investors are urged to consult their own tax advisers to determine the specific tax consequences to them of investing in the Fund, including the applicable federal, state, local and foreign tax consequences to them and the effect of possible changes in tax laws.

The recently enacted tax legislation commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”) makes significant changes to the U.S. federal income tax rules for taxation of individuals and corporations, generally effective for taxable years beginning after December 31, 2017. Many of the changes applicable to individuals are temporary and would apply only to taxable years beginning after December 31, 2017 and before January 1, 2026. There are only minor changes with respect to the specific rules only applicable to a RIC, such as the Fund. The Tax Act, however, makes numerous other changes to the tax rules that may affect shareholders and the Fund. You are urged to consult with your own tax advisor regarding how the Tax Act affects your investment in the Fund.

The Fund has elected to be treated, and intends to qualify each year as a RIC under Subchapter M of the Code. In order to qualify as a RIC, the Fund must satisfy certain requirements regarding the sources of its income, the diversification of its assets and the distribution of its income. As a RIC, the Fund is not expected to be subject to federal income tax on the income and gains it timely distributes to its shareholders.

The Fund invests primarily in equity securities. The Fund may distribute to its shareholders amounts that are treated as long-term capital gain or ordinary income (which may include short-term capital gains). These distributions may be subject to federal, state and local taxation, depending on a shareholder’s situation. If so, they are taxable whether or not such distributions are reinvested. Net capital gain distributions (the excess of net long-term capital gain over net short-term capital loss) are generally taxable at rates applicable to long-term capital gains regardless of how long a shareholder has held its shares. Long-term capital gains are currently taxable to non-corporate shareholders at a maximum federal income tax rate of 20%. In addition, certain individuals, estates and trusts are subject to a 3.8% Medicare tax on net investment income, including net capital gains and other taxable dividends. Corporate shareholders are taxed on capital gain at the same rates as apply to ordinary income, which the Tax Act has reduced to 21%. The Fund expects that a portion of its distributions to shareholders from its investments will qualify for the dividends-received deduction available to corporate shareholders and as “qualified dividend income” to non-corporate shareholders; provided certain holding period and other requirements are satisfied. Distributions in excess of the Fund’s current and accumulated earnings and profits will represent a return of capital for federal income tax purposes to the extent of the shareholder’s basis in the shares and thus will generally not be taxable to the shareholder. To the extent such distributions exceed the shareholder’s basis in the shares, they will be treated as gain from the sale of such shares and will be treated as capital gain (assuming the shares are held as a capital asset).

In order for some portion of the dividends received by a Fund shareholder to be qualified dividend income, the Fund must meet certain holding period and other requirements with respect to some portion of the dividend-paying stocks in its portfolio and the shareholder must meet the same holding period and other requirements with respect to the shareholder’s Fund shares. A dividend will not be treated as qualified dividend income (at either

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the Fund or shareholder level) (i) if the dividend is received with respect to any share of stock held (or treated as held) for fewer than 61 days during the 121-day period beginning on the date which is 60 days before the date on which such share becomes ex-dividend with respect to such dividend (or, in the case of certain preferred stock, 91 days during the 181-day period beginning 90 days before such date), (ii) to the extent that the recipient is under an obligation (whether pursuant to a short sale or otherwise) to make related payments with respect to positions in substantially similar or related property, (iii) if the recipient elects to have the dividend income treated as investment income for purposes of the limitation on deductibility of investment interest, or (iv) if the dividend is received from a foreign corporation that is (a) not eligible for the benefits of a comprehensive income tax treaty with the United States (with the exception of dividends paid on stock of such a foreign corporation that is readily tradable on an established securities market in the United States) or (b) treated as a passive foreign investment company.

In general, dividends of net investment income received by corporate shareholders of the Fund will qualify for the 50% dividends-received deduction generally available to corporations to the extent of the amount of eligible dividends received by the Fund from domestic corporations for the taxable year. A dividend received by the Fund will not be treated as a qualifying dividend (i) if it has been received with respect to any share of stock that the Fund has held (or is treated as holding) for less than 46 days (91 days in the case of certain preferred stock) during the 91-day period beginning on the date which is 45 days before the date on which such share becomes ex-dividend with respect to such dividend (during the 181-day period beginning 90 days before such date in the case of certain preferred stock) or (ii) to the extent that the Fund is under an obligation (pursuant to a short sale or otherwise) to make related payments with respect to positions in substantially similar or related property. Moreover, the dividends-received deduction may be disallowed or reduced (i) if a corporate shareholder fails to satisfy the foregoing requirements with respect to its shares of the Fund or (ii) by application of various provisions of the Code (for instance, the dividends-received deduction is reduced in the case of a dividend received on debt-financed portfolio stock (generally, stock acquired with borrowed funds)). For purposes of determining the holding period for stock on which a dividend is received, such holding period is reduced for any period the recipient has an option to sell, is under a contractual obligation to sell or has made (and not closed) a short sale of substantially identical stock or securities, and in certain other circumstances.

The straddle rules discussed below could cause distributions that would otherwise qualify for the dividends-received deduction or constitute qualified dividend income to fail to satisfy the applicable holding period requirements.

As a RIC, the Fund will not be subject to federal income tax in any taxable year provided that it meets certain distribution requirements. The Fund may retain for investment some (or all) of its net capital gain. If the Fund retains any net capital gain or investment company taxable income, it will be subject to tax at regular corporate rates on the amount retained. If the Fund retains any net capital gain, it may designate the retained amount as undistributed capital gains in a notice to its shareholders who, if subject to federal income tax on long-term capital gains, (i) will be required to include in income for federal income tax purposes, as long-term capital gain, their share of such undistributed amount; (ii) will be entitled to credit their proportionate shares of the federal income tax paid by the Fund on such undistributed amount against their federal income tax liabilities, if any; and (iii) may claim refunds to the extent the credit exceeds such liabilities. For federal income tax purposes, the basis of shares owned by a shareholder of the Fund will be increased by an amount equal to the difference between the amount of undistributed capital gains included in the shareholder’s gross income and the tax deemed paid by the shareholder under clause (ii) of the preceding sentence.

Distributions declared by the Fund to shareholders of record in October, November or December and paid during the following January will be treated as having been paid by the Fund and received by shareholders in the year the distributions were declared.

Amounts not distributed on a timely basis in accordance with a calendar year distribution requirement are subject to a nondeductible 4% federal excise tax. To prevent imposition of the excise tax, the Fund must

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distribute during each calendar year an amount at least equal to the sum of (i) 98% of its ordinary income (not taking into account any capital gains or losses) for the calendar year, (ii) 98.2% of its capital gains in excess of its capital losses (adjusted for certain ordinary losses) for the one-year period ending October 31 of the calendar year, and (iii) any ordinary taxable income and capital gains for previous years that were not distributed during those years and on which the Fund paid no U.S. federal income tax. To prevent application of the excise tax, the Fund intends to make distributions in accordance with the calendar year distribution requirement.

Each shareholder will receive an annual statement summarizing the shareholder’s distributions.

The Fund’s investments may be subject to special provisions of the Code that may, among other things, (i) disallow, suspend or otherwise limit the allowance of certain losses or deductions, (ii) convert lower taxed long-term capital gains into higher taxed short-term capital gains or ordinary income, (iii) convert an ordinary loss or a deduction into a capital loss, (iv) cause the Fund to recognize income or gain without a corresponding receipt of cash, (v) adversely alter the characterization of certain Fund investments or distributions and/or (vi) affect the Fund’s ability to qualify as a RIC.

Some of the Fund’s index call options may be considered “section 1256 contracts.” Code section 1256 generally will require any gain or loss arising from the lapse, closing out or exercise of such positions to be treated as 60% long-term and 40% short-term capital gain or loss. In addition, the Fund generally will be required to “mark to market” ( i.e. , treat as sold for fair market value) each outstanding index option position that is a section 1256 contract at the close of each taxable year (and on October 31 of each year for excise tax purposes). If a “section 1256 contract” held by the Fund at the end of a taxable year is sold in the following year, the amount of any gain or loss realized on such sale will be adjusted to reflect the gain or loss previously taken into account under the “mark to market” rules. In addition to most index call options, “section 1256 contracts” under the Code include certain other options contracts, certain regulated futures contracts, and certain other financial contracts.

The Fund’s index call options that do not qualify as section 1256 contracts under the Code generally will be treated as equity options governed by Code section 1234. Pursuant to Code section 1234, if a written option expires unexercised, the premium received is short-term capital gain to the Fund. If the Fund enters into a closing transaction, the difference between the premium received for writing the option, and the amount paid to close out its position generally is short-term capital gain or loss.

Offsetting positions held by the Fund involving certain derivative instruments, such as options, forward, and futures, as well as its long and short positions in portfolio securities, may be considered, for U.S. federal income tax purposes, to constitute “straddles.” Straddles are defined to include “offsetting positions” in actively traded personal property. For instance, a straddle can arise if the Fund writes a certain covered call option on a stock ( i.e. , a call on a stock owned by the Fund), or writes a call option on a stock index to the extent the Fund’s stock holdings (and any subset thereof) and the index on which it has written a call overlap sufficiently to constitute a straddle under applicable Treasury Regulations. The tax treatment of “straddles” is governed by section 1092 of the Code which, in certain circumstances, overrides or modifies the provisions of section 1256 described above. If the Fund is treated as entering into a “straddle” and at least one (but not all) of the Fund’s positions in derivative contracts comprising a part of such straddle is a section 1256 contract, described above, then such straddle could be characterized as a “mixed straddle.” The Fund may make one or more elections with respect to “mixed straddles.” Depending upon which election is made, if any, the results with respect to the Fund may differ. Generally, to the extent the straddle rules apply to positions established by the Fund, losses realized by the Fund may be deferred to the extent of unrealized gain in any offsetting positions. Moreover, as a result of the straddle rules, short-term capital loss on straddle positions may be recharacterized as long-term capital loss, and long-term capital gain may be characterized as short-term capital gain. In addition, the existence of a straddle can cause the holding periods to be tolled on the offsetting positions. As a result, the straddle rules could cause distributions that would otherwise constitute “qualified dividend income” or qualify for the dividends-received deduction to fail to satisfy the applicable holding period requirements described above. Furthermore, the Fund may be required to capitalize, rather than deduct currently, any interest expense and carrying charges applicable

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to a position that is part of a straddle, including any interest on indebtedness incurred or continued to purchase or carry any positions that are part of a straddle. The application of the straddle rules to certain offsetting Fund positions can therefore affect the amount, timing and/or character of distributions to shareholders, and may result in significant differences from the amount, timing and/or character of distributions that would have been made by the Fund if it had not entered into offsetting positions in respect of certain of its portfolio securities.

The straddle rules described above do not apply if all the offsetting positions making up a straddle consist of one or more “qualified covered call options” and the stock to be purchased under the options and the straddle is not part of a larger straddle. A qualified covered call option is generally any option granted by the Fund to purchase stock it holds (or stock it acquires in connection with granting the option) if, among other things, (1) the option is traded on a national securities exchange that is registered with the SEC or other market the IRS determined has rules adequate to carry out the purposes of the applicable Code provision, (2) the option is granted more than 30 days before it expires, (3) the option is not a “deep-in-the-money option,” (4) such option is not granted by an options dealer in connection with his activity of dealing in options, and (5) gain or loss with respect to the option is not ordinary income or loss.

If the Fund enters into a “constructive sale” of any appreciated financial position in its portfolio, the Fund will be treated as if it had sold and immediately repurchased the property and must recognize gain (but not loss) with respect to that position. A constructive sale of an appreciated financial position occurs when the Fund enters into certain offsetting transactions with respect to the same or substantially identical property, including, but not limited to: (i) a short sale; (ii) an offsetting notional principal contract; (iii) a futures or forward contract; or (iv) other transactions identified in future Treasury Regulations. The character of the gain from constructive sales will depend upon the Fund’s holding period in the appreciated financial position. Losses realized from a sale of a position that was previously the subject of a constructive sale will be recognized when the position is subsequently disposed of. The character of such losses will depend upon the Fund’s holding period in the position beginning with the date the constructive sale was deemed to have occurred and the application of various loss deferral provisions in the Code. Constructive sale treatment does not apply to certain closed transactions, including if such a transaction is closed on or before the 30th day after the close of the Fund’s taxable year and the Fund holds the appreciated financial position unhedged throughout the 60-day period beginning with the day such transaction was closed.

The redemption, sale or exchange of shares normally will result in capital gain or loss to shareholders who hold their shares as capital assets. Generally, a shareholder’s gain or loss will be long-term capital gain or loss if the shares have been held for more than one year. The gain or loss on shares held for one year or less will generally be treated as short-term capital gain or loss. Present law taxes both long-term and short-term capital gains of corporations at the same rates applicable to ordinary income. For non-corporate taxpayers, however, long-term capital gains are currently taxed at a maximum federal income tax rate of 20%, while short-term capital gains and other ordinary income are currently taxed at ordinary income rates. An additional 3.8% Medicare tax may also apply to certain individual, estate or trust shareholders’ capital gain from the sale or other disposition of their shares. Any loss on the sale or disposition of shares held for six months or less will be treated as a long-term capital loss to the extent of any net capital gain distributions received by the shareholder on such shares. Any loss realized on a sale or exchange of shares of the Fund will be disallowed to the extent those shares of the Fund are replaced by other substantially identical shares of the Fund or other substantially identical stock or securities (including through reinvestment of dividends) within a period of 61 days beginning 30 days before and ending 30 days after the date of disposition of the original shares. In that event, the basis of the replacement shares will be adjusted to reflect the disallowed loss. The deductibility of capital losses is subject to limitations.

The Fund may be required to withhold U.S. federal income tax at a rate of 24% from all distributions and redemption proceeds payable to a shareholder if the shareholder fails to provide the Fund with his, her or its correct taxpayer identification number or to make required certifications, or if the shareholder has been notified by the IRS (or the IRS notifies the Fund) that he, she or it is subject to backup withholding. Backup withholding is not an additional tax; rather, it is a way in which the IRS ensures it will collect taxes otherwise due. Any amounts withheld may be credited against a shareholder’s U.S. federal income tax liability.

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CUSTODIAN AND TRANSFER AGENT

The custodian of the assets of the Fund is State Street Bank and Trust Company, One Lincoln Street, Boston, Massachusetts 02111 (the “Custodian”). The Custodian performs custodial, fund accounting and portfolio accounting services. The Fund’s transfer, shareholder services and dividend paying agent is Computershare Inc. and Computershare Trust Company, N.A. (the “Transfer Agent”). The Transfer Agent is located at 250 Royall Street, Canton, Massachusetts 02021.

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

PricewaterhouseCoopers LLP, an independent registered public accounting firm, provides auditing services to the Fund. The principal business address of PricewaterhouseCoopers LLP is located at 1 North Wacker Drive, Chicago, Illinois, 60606.

LEGAL OPINION

Certain legal matters in connection with the Common Shares will be passed upon for the Fund by Morgan, Lewis & Bockius LLP, Washington, DC.

OTHER MATTERS

“Dow Jones Industrial Average ^SM ”, “DJIA ^SM ”, “Dow 30 ^SM ”, “Dow Industrials ^SM ” and “The Dow ^SM ” are service marks of Dow Jones & Company, Inc. and have been licensed for use for certain purposes by NFALLC.

The Fund is not sponsored, endorsed, sold or promoted by Dow Jones. Dow Jones makes no representation or warranty, express or implied, to the owners of the Fund or any member of the public regarding the advisability of investing in securities generally or in the Fund particularly. Dow Jones’ only relationship to the NFALLC is the licensing of certain trademarks, trade names and service marks of Dow Jones and of the Dow Jones Industrial Average ^SM , which is determined, composed and calculated by Dow Jones without regard to NFALLC or the Fund. Dow Jones has no obligation to take the needs of NFALLC or the owners of the Fund into consideration in determining, composing or calculating the Dow Jones Industrial Average ^SM . Dow Jones is not responsible for and has not participated in the determination of the timing of; prices at, or quantities of the Fund to be issued or in the determination or calculation of the equation by which the Fund’s shares are to be converted into cash. Dow Jones has no obligation or liability in connection with the administration, marketing or trading of the Fund’s shares.

DOW JONES DOES NOT GUARANTEE THE ACCURACY AND/OR THE COMPLETENESS OF THE DOW JONES INDUSTRIAL AVERAGE ^SM OR ANY DATA INCLUDED THEREIN AND DOW JONES SHALL HAVE NO LIABILITY FOR ANY ERRORS, OMISSIONS, OR INTERRUPTIONS THEREIN. DOW JONES MAKES NO WARRANTY, EXPRESS OR IMPLIED, AS TO RESULTS TO BE OBTAINED BY NFALLC, OWNERS OF THE FUND, OR ANY OTHER PERSON OR ENTITY FROM THE USE OF THE DOW JONES INDUSTRIAL AVERAGE ^SM OR ANY DATA INCLUDED THEREIN. DOW JONES MAKES NO EXPRESS OR IMPLIED WARRANTIES, AND EXPRESSLY DISCLAIMS ALL WARRANTIES, OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE WITH RESPECT TO THE DOW JONES INDUSTRIAL AVERAGE ^SM OR ANY DATA INCLUDED THEREIN. WITHOUT LIMITING ANY OF THE FOREGOING, IN NO EVENT SHALL DOW JONES HAVE ANY LIABILITY FOR ANY LOST PROFITS OR INDIRECT. PUNITIVE, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSSES, EVEN IF NOTIFIED OF THE POSSIBILITY THEREOF. THERE ARE NO THIRD PARTY BENEFICIARIES OF ANY AGREEMENTS OR ARRANGEMENTS BETWEEN DOW JONES AND THE FUND.

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AVAILABLE INFORMATION

The Fund is subject to the informational requirements of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and the 1940 Act and is required to file reports, proxy statements and other information with the SEC. These documents can be inspected and copied for a fee at the SEC’s public reference room, 100 F Street, NE, Washington, DC 20549, and Northeast Regional Office, Woolworth Building, 233 Broadway, New York, New York 10013-2409. Reports, proxy statements, and other information about the Fund can be inspected at the offices of the NYSE.

This Prospectus does not contain all of the information in the Fund’s Registration Statement, including amendments, exhibits, and schedules.

Additional information about the Fund and the Common Shares can be found in the Fund’s Registration Statement (including amendments, exhibits, and schedules) on Form N-2 filed with the SEC. The SEC maintains a web site (http://www.sec.gov) that contains the Fund’s Registration Statement, other documents incorporated by reference, and other information the Fund has filed electronically with the SEC, including proxy statements and reports file under the Exchange Act.

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TABLE OF CONTENTS FOR THE

STATEMENT OF ADDITIONAL INFORMATION