Strategy. The Fund normally invests at least 80% of its total assets in securities that comprise the Funds benchmark index. For purposes of this policy, the term assets means net assets plus the amount of any borrowings for investment purposes. The Preferred Securities Index is comprised of U.S. exchange-listed hybrid debt, preferred stock and convertible preferred stock issued by non-financial corporations (collectively, "Preferred Securities"). Hybrid debt securities are securities that have characteristics of both equity securities and debt securities. Hybrid securities usually pay interest or dividends and, in the event of an issuer's bankruptcy or default, holders of hybrid securities typically have claims that are senior to holders of the issuer's equity securities but subordinate to holders of the issuer's debt … Show more… The Fund normally invests at least 80% of its total assets in securities that comprise the Funds benchmark index. For purposes of this policy, the term assets means net assets plus the amount of any borrowings for investment purposes. The Preferred Securities Index is comprised of U.S. exchange-listed hybrid debt, preferred stock and convertible preferred stock issued by non-financial corporations (collectively, "Preferred Securities"). Hybrid debt securities are securities that have characteristics of both equity securities and debt securities. Hybrid securities usually pay interest or dividends and, in the event of an issuer's bankruptcy or default, holders of hybrid securities typically have claims that are senior to holders of the issuer's equity securities but subordinate to holders of the issuer's debt securities. Preferred Securities generally pay fixed or variable rate distributions to preferred shareholders and such shareholders have preference over common shareholders in the payment of distributions and in the event of a liquidation of the issuers assets, but are junior to most other forms of debt, including senior and subordinated debt. Preferred Securities may be subject to redemption or call provisions and may include those issued by small- and medium-capitalization companies. As of December 31, 2024, the Preferred Securities Index included 99 U.S.-listed securities of 49 issuers. The Funds 80% investment policy is non-fundamental and may be changed without shareholder approval upon 60 days prior written notice to shareholders. The Preferred Securities Index is reconstituted and rebalanced monthly. The Fund, using a passive or indexing investment approach, attempts to approximate the investment performance of the Preferred Securities Index by investing in a portfolio of securities that generally replicates the Preferred Securities Index. Unlike many investment companies that try to beat the performance of a benchmark index, the Fund does not try to beat the Preferred Securities Index and does not seek temporary defensive positions that are inconsistent with its investment objective of seeking to replicate the Preferred Securities Index. The Fund is classified as a non-diversified fund under the Investment Company Act of 1940 Act and, therefore, may invest a greater percentage of its assets in a particular issuer. The Fund may concentrate its investments in a particular industry or group of industries to the extent that the Preferred Securities Index concentrates in an industry or group of industries. As of December 31, 2024, each of the utilities, real estate, communication services and industrials sectors represented a significant portion of the Fund. Show less