The U.S. dollar was poised to finish September as its strongest month since June, supported by the Federal Reserve's first interest rate increase in over three years and a sharp sell-off in the U.S. Treasury market that has pushed yields to multi-decade highs. The greenback also benefited from safe-haven flows amid rising oil prices linked to a widening conflict in the Middle East.
The U.S. dollar index, which measures the currency against a basket of six major peers, was trading around 101.47, up 0.1% on the day and marking a 2.1% gain for the month of September.
Data-driven intraday swings
Earlier in the session the dollar pulled back after a wave of U.S. economic releases reduced the market's expectations for an October Fed rate hike. The U.S. Bureau of Economic Analysis reported the personal consumption expenditures price index, the Fed's preferred inflation gauge, rose 0.3% month-on-month and 3.4% year-on-year in August. That followed July readings of 0.1% and 3.4%, and came in below economists' estimates of 0.4% month-on-month and 3.7% year-on-year.
On a core basis, the PCE price index climbed 0.2% month-on-month and 3.0% year-on-year in August, versus July's 0.1% and 3.0% and below consensus forecasts of 0.3% and 3.3%, respectively.
At the same time, the BEA revised up its estimate of real U.S. economic growth for the second quarter to 2.2% from a prior reading of 1.5%. Economists had expected the Q2 print to remain at 1.5%.
Private payrolls data from ADP also surprised on the upside, showing 90,000 jobs added in September, the first acceleration in hiring since May and a jump from 36,000 private jobs added in August.
Bond market pressure and Fed path
These economic prints arrived against a backdrop of rising Treasury yields, a move that has elevated borrowing costs across the curve. Market participants attributed the yield advance to several factors cited by traders: stronger growth outlooks, elevated oil prices, large amounts of corporate debt issuance to fund technology investments, hawkish messaging from some Fed officials, and expanding U.S. fiscal deficits.
The Fed implemented its first rate increase in more than three years earlier this month and signaled additional tightening could follow. In the days after the decision, the likelihood of a further quarter-point hike in October had increased, supported by hawkish commentary and the relentless bond market adjustment. That calculus shifted somewhat when New York Fed President John Williams said there was "no need for urgency" regarding more rate hikes.
Wednesday's inflation and employment indicators further reduced the market-implied probability of an October move. According to the CME FedWatch tool, the chance of a 25-basis-point hike next month fell to about 37% from nearly 51% the previous day.
"The combination of reports has strengthened investor confidence that the U.S. central bank may become less hawkish, and it has lifted optimism about the cycle's ability to manage much loftier interest rates by remaining resilient and avoiding a slowdown," said José Torres, senior economist at Interactive Brokers. He added that fixed income trading is split: easing price pressures have helped the short end of the Treasury curve, while higher oil prices and robust growth projections are pressuring longer-term yields.
Yen movement and intervention warnings
In the backdrop of dollar strength, the Japanese yen was trading at 157.41 per dollar but was nevertheless positioned to post a September gain of nearly 1.5%.
The yen's recent behavior followed renewed public warnings from Japan's top currency diplomat, Atsushi Mimura. He reiterated that Prime Minister Sanae Takaichi and Finance Minister Satsuki Katayama - coordinating with Washington - had issued an explicit warning against disorderly yen weakness. That intervention rhetoric supported expectations that authorities are prepared to act if the currency's moves threaten market stability.
At the same time, domestic data hinted at uneven economic fundamentals. Japanese retail sales for August were weaker than expected and industrial production unexpectedly contracted, underscoring near-term fragility. Yet minutes from the Bank of Japan's July policy meeting showed officials view underlying inflation as approaching the central bank's 2% target, reinforcing hopes of eventual policy normalization despite short-run volatility.
Australian dollar slides after CPI undershoot
The Australian dollar fell sharply, declining 0.6% to $0.6946 and slipping below the $0.7000 mark for a second consecutive day. The currency hit its weakest level in nine weeks.
Markets punished the Aussie after monthly Australian consumer price index data came in softer than consensus expectations, reducing the likelihood of further near-term tightening from the Reserve Bank of Australia. The softer inflation print followed the RBA's widely anticipated 25-basis-point cash rate increase one day earlier, which took the cash rate to 4.60%, a 15-year high.
Because markets had already priced in the RBA's rate rise, the Australian dollar struggled as the narrowing differential against elevated U.S. yields removed a key support. That left the currency exposed amid broader risk aversion across regional foreign-exchange markets.
What this means for markets
Investors are navigating a complex mix of forces: a firmer U.S. dollar driven by higher yields and geopolitical risk, incoming U.S. data that moderates the pace of expected Fed tightening, intervention talk from Japanese officials, and divergent domestic inflation trends shaping central bank outlooks in Australia and Japan. These dynamics are influencing currency pairs, Treasury market structure and cross-border capital flows.
Market participants are watching whether yields continue to extend their advance, how oil prices respond to geopolitical developments, whether Japanese authorities follow through on intervention rhetoric, and how central banks adjust communication and policy in response to mixed inflation signals.
Data points cited in this report: U.S. dollar index 101.47; dollar rose 2.1% for September; PCE headline +0.3% M/M and +3.4% Y/Y in August; core PCE +0.2% M/M and +3.0% Y/Y in August; BEA Q2 GDP revised to 2.2% from 1.5%; ADP private payrolls +90k in September versus +36k in August; CME FedWatch probability of October hike about 37% from nearly 51%; USD/JPY 157.41; yen set for a September rally of almost 1.5%; AUD/USD $0.6946, down 0.6%; RBA cash rate 4.60% after a 25 basis point hike.