The Fund seeks to track the investment results of the MSCI ACWI Select Energy Producers Investable Market Index (IMI) (the Underlying Index), which has been developed by MSCI Inc. (the Index Provider or MSCI) to measure the combined performance of equity securities of companies in both developed and emerging markets that are primarily engaged in the business of energy exploration and production. MSCI begins with the MSCI ACWI Investable Market Index (IMI), and then selects securities of companies at or near the initial phase of energy production that are primarily focused on oil and gas exploration and production, and coal and consumable fuels production and mining. The Underlying Index includes large-, mid- and small-capitalization companies and may change over time. As of August 31, 2023, a significant portion of the Underlying Index is represented by securities of companies in the energy industry or sector. The components of the Underlying Index are likely to change over time. The Underlying Index consisted of securities of companies in 29 countries or regions as of August 31, 2023.