Invesco DB US Dollar Index Bullish Fund seeks to establish long positions in ICE U.S. Dollar Index futures contracts with a view to tracking the changes, whether positive or negative, in the level of the Deutsche Bank Long USD Currency Portfolio Index Excess ReturnTM over time, plus the excess, if any, of the sum of the funds Treasury Income, Money Market Income and T-Bill ETF Income over the expenses of the fund.The fund invests in futures contracts in an attempt to track its index. The index is calculated to reflect the changes in market value over time, whether positive or negative, of long positions in DX Contracts.