PowerShares DB Oil Fund (DBO)

[OilStockReport]

PowerShares DB Oil Fund (DBO): This fund is linked to a rules-based index comprised of futures contracts on WTI. Unlike USO, this fund tracks an “Optimum Yield” version of an index that seeks to replace expiring futures contracts with new contracts expiring in the month that will generate the highest “implied roll yield” (either minimizing the drag of contango or maximizing the yield from backwardation).