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 Energy Income Index is a rules-based index designed to give investors a means to track the overall performance of North American companies involved in the midstream energy segment, which includes master limited partnerships (MLPs) and corporations involved in oil and gas storage and transportation. The Energy Income Index is entirely comprised of companies involved in the midstream energy segment and includes common stock of corporations and equity securities of MLPs and MLP affiliates. Oil and gas storage and transportation companies … 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 Energy Income Index is a rules-based index designed to give investors a means to track the overall performance of North American companies involved in the midstream energy segment, which includes master limited partnerships (MLPs) and corporations involved in oil and gas storage and transportation. The Energy Income Index is entirely comprised of companies involved in the midstream energy segment and includes common stock of corporations and equity securities of MLPs and MLP affiliates. Oil and gas storage and transportation companies may include those involved in oil and gas pipelines, storage facilities, and other activities associated with transporting, storing, and gathering natural gas, natural gas liquids, crude oil or refined products. To be initially eligible for the Energy Income Index, companies must generate at least 50% of their revenues from oil and gas storage and transportation (as defined above). Such companies may include medium- and large-capitalization companies and North American issuers, including Canadian issuers. As of December 31, 2025, the Energy Income Index included 30 securities of companies with a market capitalization range of approximately $1.4 billion and $104.3 billion and a weighted average market capitalization of $41.5 billion. The Energy Income Index is rebalanced quarterly. The Funds 80% investment policy is non-fundamental and may be changed without shareholder approval upon 60 days prior written notice to shareholders. The Fund, using a passive or indexing investment approach, attempts to approximate the investment performance of the Energy Income Index by investing in a portfolio of securities that generally replicates the Energy Income Index. Unlike many investment companies that try to beat the performance of a benchmark index, the Fund does not try to beat the Energy Income Index and does not seek temporary defensive positions that are inconsistent with its investment objective of seeking to replicate the Energy Income Index. The Fund is classified as a non-diversified fund under the Investment Company Act of 1940, 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 Index concentrates in an industry or group of industries. As of September 30, 2025, the energy sector represented a significant portion of the Fund. Show less