A summary of the United States Oil Fund is available from the United States Commodity Funds website, and it includes the fund's investment objective and strategy, past performance and holdings. The United States Oil Fund trades on the NYSE Arca exchange under ticker symbol USO.
A summary of USO's historical performance over various periods shows losses ranging from approximately 14 to 57 percent, reports CNN. The fund's investment objective is for share price to reflect changes in the price of West Texas Intermediate crude oil, and the fund is primarily invested in crude futures, reports Bloomberg. As of 2015, analysts predict continued lows in the per-barrel price of crude, states TheStreet.