The investment seeks daily investment results, before fees and expenses, of 300% of the daily performance of the ISE-Revere Natural Gas IndexTM. The fund, under normal circumstances, invests at least 80% of its net assets (plus borrowing for investment purposes) in financial instruments, such as swap agreements, and securities of the index, exchange-traded funds ("ETFs") that track the index and other financial instruments that provide daily leveraged exposure to the index or ETFs that track the index. The index is designed to take advantage of both event-driven news and long term trends in the natural gas industry. The fund is non-diversified.