Roll Dates*

Roll Start Roll End
November 6, 2009 November 11, 2009
December 7, 2009 December 10, 2009
January 6, 2010 January 11, 2010
February 8, 2010 February 11, 2010
March 8, 2010 March 11, 2010
April 6, 2010 April 9, 2010
May 6, 2010 May 11, 2010
June 8, 2010 June 11, 2010
July 6, 2010 July 9, 2010
August 6, 2010 August 11, 2010
September 7, 2010 September 10, 2010
October 6, 2010 October 11, 2010
November 5, 2010 November 10, 2010
December 6, 2010 December 9, 2010
* Roll Dates are projected and subject to change without notice. Roll Dates are defined as the dates on which the Benchmark Futures Contract are expected to begin changing from the current closest to expire contract month to the next closest to expire contract month. The change occurs over four days.

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