Strategy. The Fund generally will invest at least 90% of its total assets in securities that comprise the Underlying Index. Strictly in accordance with its guidelines and mandated procedures, S&P Dow Jones Indices LLC (S&P DJI or the Index Provider) compiles, maintains and calculates the Underlying Index, which is composed of securities of all companies included in the S&P 500 Index that are classified as members of the energy sector, as defined according to the Global Industry Classification Standard (GICS ), with a 22 company minimum count at each quarterly rebalance. The energy sector includes companies engaged in the exploration and production, refining and marketing, and storage and transportation of oil and gas and coal and consumable fuels, as well as … Show more… The Fund generally will invest at least 90% of its total assets in securities that comprise the Underlying Index. Strictly in accordance with its guidelines and mandated procedures, S&P Dow Jones Indices LLC (S&P DJI or the Index Provider) compiles, maintains and calculates the Underlying Index, which is composed of securities of all companies included in the S&P 500 Index that are classified as members of the energy sector, as defined according to the Global Industry Classification Standard (GICS ), with a 22 company minimum count at each quarterly rebalance. The energy sector includes companies engaged in the exploration and production, refining and marketing, and storage and transportation of oil and gas and coal and consumable fuels, as well as companies that offer oil and gas equipment and services. The Underlying Index is an equal-weighted index, which means that, unlike the S&P 500 Index, which employs a float-adjusted market capitalization weighted methodology, the Underlying Index assigns each component security the same weight at each quarterly rebalance. In the event there are fewer than 22 companies eligible for inclusion in the Underlying Index at a quarterly rebalance, the Underlying Index will be supplemented with the largest energy companies in the S&P MidCap 400 Index based on float-adjusted market capitalization until the 22 company minimum is reached. If intra-quarter additions to the S&P 500 Index in the energy sector result in the Underlying Index reaching the required minimum count, the supplementary companies will remain in the Underlying Index until the next quarterly rebalance at which point they will be reviewed. As of June 30, 2025, the Underlying Index was comprised of 22 constituents with market capitalizations ranging from $6.6 billion to $464.6 billion. Although the Fund generally seeks to employ a full replication methodology in seeking to track the Underlying Index (meaning that the Fund generally invests in all of the securities comprising the Underlying Index in proportion to their weightings in the Underlying Index), the Fund at times may employ a sampling methodology, which may include, after investing at least 90% of its total assets in the components of the Underlying Index, investing a portion of its assets in other investment companies, including exchange-traded funds (ETFs). Such investment companies may be affiliated with the Fund and will seek to invest in securities of companies in the energy sector. Concentration Policy. The Fund will concentrate its investments (i.e., invest more than 25% of the value of its net assets) in securities of issuers in any one industry or group of industries only to the extent that the Underlying Index reflects a concentration in that industry or group of industries. The Fund will not otherwise concentrate its investments in securities of issuers in any one industry or group of industries. As of April 30, 2025, the Fund had significant exposure to the energy sector. The Funds portfolio holdings, and the extent to which it concentrates its investments, are likely to change over time. Show less