$USO is currently trading at over a 1% discount to the net asset value of fuel holdings.
For more information about oil and it's history take a look at this book review of Barbarians of oil [url]http://paid2trade.com/rw/35/robertweinstein/book-review-barbarians-of-oil[/url]
Fund Facts
USO as of 10/03/2011
NAV $30.04
4PM Bid/Ask Midpoint $29.71
Last Trade Price $29.74
Units Outstanding 35,700,000
Total Net Assets $1,072,534,486.54
Estimated Yield on Cash Holdings1 0.01%
Estimated Management Expenses2 0.45%
Total Expense Ratio 0.75%
http://www.unitedstatesoilfund.com/uso-holdings.php