All of the PowerShares DB Crude Oil ETNs are based on a total return version of the Deutsche Bank Liquid Commodity Index – Optimum Yield Oil™, which is composed of certain crude oil futures contracts. The Long and Double Long PowerShares DB Crude Oil ETNs are based on the Optimum Yield™ version of the Index, and the Short and Double Short PowerShares DB Crude Oil ETNs are based on the Standard version of the index.
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