Key Highlights

  • The dollar index rose above 101.7, its highest since March 2025, with markets pricing roughly a 68% probability of a September Fed rate hike, up from 29% a week earlier, supporting continued dollar strength.
  • The greenback advanced against most major currencies including the euro, pound, and Swiss franc, as investors priced in a more hawkish Fed relative to other major central banks facing different inflation and growth dynamics.
  • The dollar has gained approximately 3.5% year to date, with recent equity market volatility providing an additional safe-haven demand boost beyond the rate expectations driver.

The dollar index climbed above 101.7 on Wednesday, reaching its highest level since March 2025 as the Federal Reserve's increasingly hawkish policy signal drove continued institutional demand for the greenback across major currency pairs. The index is on track for its longest consecutive winning streak in more than a month.

The primary driver is the rapid repricing of September rate hike probability from roughly 29% a week ago to approximately 68% on Wednesday, reflecting the market's reassessment of the Warsh Fed's policy intentions following the first FOMC meeting under his chairmanship. When US rate expectations rise relative to those of other major central banks, the interest rate differential that underpins currency flows shifts in the dollar's favour, attracting capital from investors who can earn more by holding dollar-denominated assets.

The dollar advanced against the euro, pound, and Swiss franc as investors assessed that the Fed's hawkish trajectory is not matched by equivalent tightening signals from the European Central Bank, Bank of England, or Swiss National Bank, creating a divergence trade that favours dollar longs. Recent equity market volatility added a second demand driver, as institutional investors moved into the dollar as a safe-haven position alongside the rate differential motivation.

The dollar's 3.5% year-to-date gain reflects a sustained reversal from the weakness that characterised the early months of the year when rate cut expectations were still embedded in market pricing. With those expectations now replaced by a rate hike probability above 50%, the structural support for the current dollar rally extends as long as US economic activity remains resilient and inflation stays above the Fed's 2% target.