The fund invests in swap agreements, futures contracts, short positions or other financial instruments that, in combination, provide inverse or short leveraged exposure to the index equal to at least 80% of the fund's net assets (plus borrowing for investment purposes). The index is provided by S&P Dow Jones Indices and includes domestic companies from the energy sector which includes the following industries: oil, gas and consumable fuels; and energy equipment and services. It is non-diversified.