PowerShares DB Oil Fund (the Fund) is a separate series of PowerShares DB Multi-Sector Commodity Trust (the Trust). The Fund is a based on the DBIQ Optimum Yield Crude Oil Index Excess Return (the Index). The Fund seeks to track the changes, whether positive or negative, in the level of the DBIQ Optimum Yield Crude Oil Index Excess Return (the Index) over time, plus the excess, if any, of the Fund’s interest income from its holdings of United States Treasury Obligations and other high credit quality short-term fixed income securities over the expenses of the Fund. The Fund is managed by DB Commodity Services LLC (the Managing Owner). The Index is a rules-based index composed of futures contracts on Light Sweet Crude Oil (WTI) and is intended to reflect the performance of crude oil.