Thornburg American Opportunities Fund

Important Information

Before investing, carefully consider the Fund's investment goals, risks, charges, and expenses. For a prospectus or summary prospectus containing this and other information, contact your financial advisor or visit thornburg.com. Read them carefully before investing.

Investments carry risks, including possible loss of principal. Additional risks may be associated with investments outside the United States, especially in emerging markets, including currency fluctuations, illiquidity, volatility, and political and economic risks. Investments in small- and mid-capitalization companies may increase the risk of greater price fluctuations. Investments in the Fund are not FDIC insured, nor are they bank deposits or guaranteed by a bank or any other entity.

The performance of any index is not indicative of the performance of any particular investment. Unless otherwise noted, index returns reflect the reinvestment of income dividends and capital gains, if any, but do not reflect fees, brokerage commissions or other expenses of investing. Investors may not make direct investments into any index.

Diversification does not assure or guarantee better performance and cannot eliminate the risk of investment losses.

Funds invested in a limited number of holdings may expose an investor to greater volatility.

Class R shares are limited to retirement platforms only.

Class I shares may not be available to all investors. Minimum investments for the I share class may be higher than those for other classes.

There is no guarantee that the Fund will meet its investment objectives.

Please see our glossary for a definition of terms.

Thornburg mutual funds are distributed by Thornburg Securities LLC.

Thornburg Investment Management, Inc. mutual funds are sold through investment professionals including investment advisors, brokerage firms, bank trust departments, trust companies and certain other financial intermediaries. Thornburg Securities LLC (TSL) does not act as broker of record for investors.

For ETF Class Shares:
The Advisor and certain Portfolios have received an exemptive order from the Securities and Exchange Commission permitting these Portfolios to offer both a mutual fund share class and an exchange-traded share class that operates as an ETF. Under this structure, the ETF class shares are listed and traded on a national securities exchange and are generally bought and sold at market-determined prices, whereas the mutual fund share classes are purchased and redeemed at the Portfolio’s net asset value next determined after receipt of the order. Because all of the classes of a multi-class Portfolio are based on the same portfolio, transactions through one class could generate portfolio transaction costs and tax consequences for shareholders in other classes. In addition, shareholders of the mutual fund and ETF classes of a multi-class Portfolio will have differing shareholder rights with respect to exchange privileges, how shares are purchased and redeemed, the timing of dividend declarations and payments, and the timing and ability to automatically reinvest dividends. For additional information regarding these differences, please see the applicable multi-class Portfolio’s prospectus.

Each Fund’s ETF Class shares are listed and traded on a national securities exchange and, unlike the Fund's mutual fund class shares, are not individually redeemable. In addition to ETF Class shares, the Fund offers one or more classes of mutual fund shares. An investment in the Fund’s ETF Class shares is not an investment in a mutual fund.

The Fund's ETF Class shares are distributed by ALPS Distributors, Inc.

Tax efficiency benefits associated with ETF Class shares are not guaranteed and may vary based on market conditions, portfolio activity, and shareholder transactions.

The Fund is actively managed and does not seek to replicate the performance of a specified index.

Expenses differ between the Fund's ETF Class shares and mutual fund share classes.

Risks associated with investing in the Fund's ETF Class shares may include, but are not limited to: (1) Investment Adviser Risk, which is the risk that the Adviser’s investment decisions may not produce the intended results. (2) Derivatives Risk, as the Funds’ use of derivatives—including futures, options, swaps, and forward contracts—may expose them to risks related to the underlying instruments as well as additional risks such as counterparty default, liquidity constraints, valuation difficulties, and potential delays in closing positions.