The US dollar climbed to its highest level in more than a year on Wednesday after stronger-than-expected inflation data prompted traders to increase bets on further interest rate hikes by the Federal Reserve.

The Bloomberg Dollar Spot Index rose as much as 0.5%, reaching its highest level since May 2025 and moving above its November peak. The rally followed data showing that US consumer prices increased at their fastest pace in five months in September, driven partly by rising fuel costs.

The inflation figures pushed US Treasury prices lower and yields higher across maturities, reflecting market expectations that the Federal Reserve could tighten monetary policy further to contain price pressures.

US Inflation Exceeds Market Expectations

Data from the US Bureau of Labor Statistics showed that the Consumer Price Index (CPI) rose 0.6% in September compared with the previous month.

On an annual basis, inflation increased to 3.7%, exceeding the market forecast of 3.6%.

Underlying inflation also came in above expectations. Core CPI, which excludes food and energy prices, increased 0.3% month-on-month, compared with analysts’ expectations of a 0.2% rise.

The stronger-than-expected readings added to concerns that inflationary pressures remain persistent in the US economy. The figures have encouraged traders to reassess the likely direction of Federal Reserve policy.

Andrew Hazlett, a foreign-exchange trader at Monex Inc., said the hotter-than-expected CPI reading had boosted the dollar as traders priced in the possibility of further monetary tightening by the Fed.

Markets Increase Bets on Further Fed Rate Hikes

The dollar’s latest advance extended its rally into a fifth consecutive week. The currency had gained nearly 3.5% over that period, marking its longest winning streak since early 2025.

The rally has been supported by changing expectations for US interest rates. Following the Federal Reserve’s first rate hike in three years last month, markets have increasingly anticipated additional increases.

Traders are now pricing in approximately two more Fed rate hikes by the end of January, including a roughly 50% chance of an increase in October.

Alex Cohen, a strategist at Bank of America, said market pricing for the October Federal Reserve meeting had shifted rapidly again.

The latest inflation data has strengthened the view that policymakers may need to maintain a tighter monetary stance if price pressures remain elevated.

Oil Prices and Geopolitical Risks Support the Dollar

Apart from inflation and interest rate expectations, geopolitical and fiscal concerns have also contributed to demand for the US currency.

Elevated oil prices linked to the ongoing war in Iran have added to global inflation concerns and pushed bond yields higher. Meanwhile, heightened concerns over fiscal and political risks in France have supported demand for the dollar as a perceived safe-haven currency.

The combination of rising energy costs, geopolitical uncertainty and shifting monetary policy expectations has helped the greenback strengthen against other major currencies.

Although central banks in other major economies are also preparing to raise borrowing costs to contain inflation, the report noted that not all economies can accommodate the same scale of interest rate increases as the United States.

The widening interest-rate gap has therefore become an important factor supporting the dollar.

Major Global Currencies Weaken Against the Dollar

The dollar’s gains were broad-based on Wednesday, with all currencies in the Group of 10 weakening against the US currency.

The euro fell 0.7%, extending its decline during October. Valentin Marinov, head of G-10 foreign-exchange research and strategy at Credit Agricole, said the euro could continue to face pressure amid an increasingly uncertain fiscal outlook in Europe.

The Swedish krona was the weakest performer among its peers, declining 1%.

The Japanese yen also weakened by 0.4%, trading at 158.93 per US dollar. Its decline was attributed to Japan’s lower interest rates and the impact of high energy prices.

The movement across major currencies highlights how changing expectations for US monetary policy can influence global foreign-exchange markets.

Traders Strengthen Their Bullish Dollar Positions

Speculative traders have also increased their positive outlook on the US dollar.

Data from the Commodity Futures Trading Commission showed that traders raised their bullish positions during the week ending October 6. Their wagers linked to a rise in the dollar exceeded $35 billion.

The increase in these positions reflects growing confidence among some market participants that the dollar could remain supported by interest rate expectations and global economic uncertainty.

However, the currency’s near-term direction will continue to depend on incoming inflation data, developments in energy markets and signals from Federal Reserve policymakers.

Inflation Data Remains Central to the Dollar’s Outlook

The latest US inflation figures have reinforced expectations of further monetary tightening and helped push the dollar to a more than one-year high.

With headline and core inflation both exceeding forecasts, traders are closely watching the likelihood of additional Federal Reserve rate increases. Higher expected US interest rates can support the dollar by making dollar-denominated assets more attractive relative to assets in currencies with lower expected returns.

Geopolitical tensions, elevated oil prices and concerns about fiscal risks in Europe have added to the currency’s strength.

The dollar’s next move will depend on whether inflation remains elevated and how the Federal Reserve responds. For now, expectations of tighter US monetary policy have provided fresh momentum to the greenback.