This ETF aims to track and provide returns based on the performance of the US Dollar Index, primarily through futures contracts and other derivative instruments to invest in the value changes of the US dollar relative to a basket of major international currencies. The US Dollar Index measures the comprehensive value of the US dollar relative to the currencies of several major trading partner countries worldwide. It typically includes currencies such as the euro, Japanese yen, British pound, Canadian dollar, Swedish krona, and Swiss franc. UUP, as a financial instrument, allows investors to indirectly participate in the investment of the US dollar's relative trend against these currencies without directly trading in the foreign exchange market. As it was designed to reflect the exposure to the strength of the US dollar, theoretically, the value of UUP should rise when the US dollar appreciates against other currencies; conversely, if the US dollar depreciates, the value of UUP may decline.