The fund's shares will change in value and you could lose money by investing in the fund. The fund is subject to market risk. Market risk is the risk that a particular security owned by the fund or shares of the fund in general may fall in value. The outbreak of the respiratory disease designated as COVID-19 in December 2019 has caused significant volatility and declines in global financial markets, which have caused losses for investors. The COVID-19 pandemic may last for an extended period of time, and will continue to impact the economy for the foreseeable future.

The fund is subject to management risk because the sub-advisor will apply investment techniques and risk analyses that may not have the desired result. There can be no guarantee that the fund will meet its investment objective.

The fund may be concentrated in a single industry or sector which involves additional risk including limited diversification.

Financial companies are especially subject to the adverse effects of economic recession, currency exchange rates, government regulation, decreases in the availability of capital, volatile interest rates, portfolio concentrations in geographic markets and in commercial and residential real estate loans, and competition from new entrants in their fields of business.

The fund may invest in preferred securities issued by real estate investment trusts (REITs). Companies involved in the real estate industry are subject to changes in the real estate market, vacancy rates and competition, volatile interest rates and economic recession.

Preferred securities combine some of the characteristics of both common stocks and bonds. Preferred securities are typically subordinated to bonds and other debt instruments in a company's capital structure, in terms of priority to corporate income, and therefore will be subject to greater credit risk than those debt instruments.

Preferred securities are also subject to credit risk, interest rate risk, income risk, call risk and extension risk. Credit risk is the risk that an issuer of a security will be unable or unwilling to make dividend, interest and/or principal payments when due and the related risk that the value of a security may decline because of concerns about the issuer's ability to make such payments. Credit risk may be heightened if the fund invests in "high-yield" or "junk" debt. Interest rate risk is the risk that if interest rates rise, the prices of the fixed-rate instruments held by the fund may fall. Income risk is the risk that income from the fund's portfolio could decline if interest rates fall. Call risk is the risk that performance could be adversely impacted if an issuer calls higher-yielding debt instruments held by the fund. Extension risk is the risk that, when interest rates rise, certain obligations will be paid off by the issuer more slowly than anticipated, causing the value of these securities to fall.

The market value of floating rate securities may fall in a declining interest rate environment and may also fall in a rising interest rate environment if there is a lag between the rise in interest rates and the reset. Income earned by the Fund on floating rate and fixed-to-floating rate securities may decline due to lower coupon payments on floating-rate securities.

Convertible securities have characteristics of both equity and debt securities and, as a result, are exposed to certain additional risks. The market values of convertible securities tend to decline as interest rates increase and, conversely, to increase as interest rates decline.

Mandatory convertible securities are a subset of convertible securities, the conversion of which into common stock is not optional, and the conversion price at maturity is based solely upon the market price of the underlying common stock, which may be significantly less than par or the price paid. Mandatory convertible securities generally are subject to a greater risk of loss of value than securities convertible at the option of the holder.

Credit spread risk is the risk that credit spreads (i.e., the difference in yield between securities that have differences in credit quality or other factors) may increase, which may reduce the market values of the fund's securities.

Contingent convertible securities ("CoCos") may provide for mandatory conversion into common stock of the issuer under certain circumstances. Since the common stock of the issuer may not pay a dividend, investors in these instruments could experience a reduced income rate, potentially to zero; and conversion would deepen the subordination of the investor, hence worsening standing in a bankruptcy.

High yield securities, or "junk" bonds, are subject to greater market fluctuations and risk of loss than securities with higher ratings, and therefore, are considered to be highly speculative. The fund may invest in lower-quality debt issued by companies that are highly leveraged. Lower-quality debt tends to be less liquid than higher-quality debt. Investments in restricted securities could have the effect of increasing the amount of the fund's assets invested in illiquid securities if qualified institutional buyers are unwilling to purchase these securities.

An investment in a fund containing securities of non-U.S. issuers is subject to additional risks, including currency fluctuations, political risks, withholding, the lack of adequate financial information, and exchange control restrictions impacting non-U.S. issuers. These risks may be heightened for securities of companies located in, or with significant operations in, emerging market countries. The fund may invest in depositary receipts which may be less liquid than the underlying shares in their primary trading market. Changes in currency exchange rates and the relative value of non-U.S. currencies will affect the value of the fund's investments and the value of the fund's shares.

As the use of Internet technology has become more prevalent in the course of business, the fund has become more susceptible to potential operational risks through breaches in cyber security.

The fund will, under most circumstances, effect a significant portion of creations and redemptions for cash, rather than in-kind securities. As a result, an investment in the fund may be less tax-efficient.

The United Kingdom’s Financial Conduct Authority, which regulates LIBOR, intends to cease making LIBOR available as a reference rate over a phase-out period that is currently expected to begin after the end of 2021 although the specific timing of the phase out of LIBOR continues to be discussed and negotiated across the industry and in various jurisdictions. The unavailability or replacement of LIBOR may affect the value, liquidity or return on certain fund investments and may result in costs incurred in connection with closing out positions and entering into new trades. Any potential effects of the transition away from LIBOR on the fund or on certain instruments in which the fund invests can be difficult to ascertain, and they may vary depending on a variety of factors and they could result in losses to the fund.

First Trust Advisors L.P. is the adviser to the fund. First Trust Advisors L.P. is an affiliate of First Trust Portfolios L.P., the fund's distributor.