For a copy of the Prospectus contact:
ALPS Distributors, Inc., 1290 Broadway, Suite 1100, Denver, Colorado 80203 or call 1.800.920.0259 or Click Here.

Commodities prices and futures generally are volatile and are not suitable for all investors. The Fund is speculative and involves a high degree of risk. An investor may lose all or substantially all of an investment in the Fund. Funds that focus on a single sector generally experience greater volatility.

Investors buy and sell shares on a secondary market (i.e., not directly from the Fund). Only market makers or "authorized participants" may trade directly with the Fund, typically in blocks of 100k shares.

For further discussion of these and additional risks associated with an investment in USO units, Click Here.

USO is not a mutual fund or any other type of Investment Company within the meaning of the Investment Company Act of 1940, as amended, and is not subject to regulation there under.

Investing in oil interests subjects USO to the risks of the oil industry. These risks could result in large fluctuations in the price of USO’s units. An investor could lose all or substantially all of his/her investment. The United States Oil Fund is distributed by ALPS Distributors, Inc.

© 2006-2010 United States Oil Fund, LP