The Invesco DB Oil seeks to track changes, whether positive or negative, in the level of the DBIQ Optimum Yield Crude Oil Index Excess Return™ plus the interest income from the Fund's holdings of primarily US Treasury securities and money market income less the Fund's expenses. The Fund is designed for investors who want a cost-effective and convenient way to invest in commodity futures. The Index is a rules-based index composed of futures contracts on light sweet crude oil (WTI)