United States Oil Fund - Fund Performance

Fund Performance as of 12/31/2009

	1 month	3 month	Year-to-Date	1 year	Since Inception*
NAV	-0.03%	7.85%	14.14%	14.14%	-41.89%
Share Price	0.33%	8.54%	18.67%	18.67%	-41.71%

The performance quoted represents past performance, does not guarantee future results and current performance may be lower or higher than the data quoted.

Fund Performance vs. Benchmark† as of 12/31/2009

Growth of a $10,000 Investment as of 12/31/2009

The chart above shows how a hypothetical investment of $10,000 in the Fund at its inception would have performed versus an investment in the Fund’s benchmark index. The values indicate what $10,000 would have grown to over the time period indicated. The hypothetical example does not represent the returns of any particular investment.

* USO commenced operations on 4/10/2006.
** Performance figures presented reflect the expense ratio for the Fund.
† USO seeks to manage its portfolio such that the average daily changes in its Net Asset Value (“NAV”) over any rolling 30 day period is within 10%+/- of the average daily change in the price of the Benchmark Oil Futures Contract(s). (The Benchmark Oil Futures Contract is the near month futures contract for light, sweet crude oil. When the new month contract is within two weeks of expiration, the Benchmark Oil Futures Contract will become the next contract to expire.)

Market returns are based on the market close and do not represent the returns an investor would receive if shares were traded at other times.

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.