Definition:
The USO is an ETF that tracks the performance of crude oil. The fund consists of futures contracts for different oils, gases, and petroleum based-fuels. At times the oil ETF may consist of options on oil futures contracts, forward contracts for oil, and OTC transactions based on the price of oil.
If you'd like to see more related funds, here is a thorough list of oil ETFs and ETNs...
Or if you are more interested in energy investments, here is a List of Energy ETFs.
