The U.S. dollar has previously rallied on expectations for a tighter U.S. monetary policy, which would diminish the amount of dollars sloshing around the economy and prop up the greenback against foreign currencies. However, with Fed backtracking on its interest rate outlook, the dollar is losing some of its previous momentum.

Numerous factors could play roles in the dollar’s performance this year, including commodities prices, the Federal Reserve’s plans for additional interest rate hikes and the presidential election. The dollar’s current bull market still is not five years old and knowing that dollar bull markets can last for eight or nine years means UUP could have another year or two of upside ahead of it. In fact, the dollar could rally for another two years.

More international investors have piled in to the relatively attractive yields in U.S. government debt as foreign central bank policies have pushed international government yields to near zero or negative in some cases like Japan. [Treasury Bond ETFs Continue to Impress]

PowerShares DB U.S. Dollar Index Bullish Fund