
Investing.com — The U.S. dollar climbed on Wednesday and returned to a near 18-month high, as a mostly hotter-than-anticipated U.S. consumer inflation report led to a resurgence in Federal Reserve rate hike expectations.
At 16:02 ET (20:02 GMT), the U.S. dollar index, which tracks the greenback against a basket of six major peers, rose 0.4% to 102.54, earlier hitting its highest level since April 10, 2025.
U.S. headline CPI rises at its fastest monthly pace since April
Currency market participants were squarely focused on the latest U.S. consumer price index (CPI) report. As per the Bureau of Labor Statistics, headline CPI ticked up 0.6% M/M in September and core CPI rose 0.3% M/M, compared to estimates of 0.6% and 0.2%, respectively, and August readings of 0.4% and 0.3%, respectively. The headline increase was the biggest since April.
On a Y/Y basis, headline CPI climbed 3.7% in September, while core CPI advanced 2.6%. Both figures were a touch higher than anticipated and accelerated from levels in August.
The index for gasoline prices rose 9.1% M/M in September, accounting for over half of the monthly rise in headline CPI. Meanwhile, the index for energy prices soared 20.4% Y/Y last month.
Going into the CPI report, the odds of imminent Fed monetary policy tightening had taken a hit after favorable data on U.S. economic growth, the central bank’s preferred inflation gauge, and the labor market.
However, the CPI has put an October rate hike back into play. According to the CME FedWatch tool, the probability of a quarter-point hike later this month now stood at around 37%, up from nearly 22% before the release of the consumer inflation data.
“If the September PPI report (out tomorrow morning) also surprises to the upside, it could tip the balance toward a hike at the (Fed) meeting. The PPI includes measures of prices for financial services and hospital services that are not captured in the CPI, but are in the Fed’s preferred measure of inflation, the PCE price index,” Bill Adams, chief U.S. economist at Fifth Third Commercial Bank, said.
“If the Fed hikes in October, it would be in part because they are starting to think of the Iran War as a longer-term disruption of global energy supplies. Fed Governor Waller made this point in a speech last week. The Fed can look through temporary energy price shocks, which fade when supply is restored—shocks like Hurricane Isaias, for example,” he noted.