The latest minutes from the Fed's July meeting showed “most” policymakers continued to prioritize the battle against inflation, while “some participants” cited risks to the economy of pushing rates too far. This is done by tracking the Deutsche Bank Long USD Currency Portfolio Index - Excess Return plus the interest income from the fund’s holdings of U.S. Treasury securities. In terms of holdings, Invesco DB US Dollar Index Bullish Fund allocates nearly 57.6% in euro and 25.5% collectively in the Japanese yen and British pound (see: all the Currency ETFs here).