U.S. CPI and PPI both exceed expectations: renewed pressure on the Fed to raise rates?

1. U.S. inflation heats up again as CPI and PPI both exceed market expectations

The U.S. Bureau of Labor Statistics (BLS) released the September Consumer Price Index (CPI) on October 14. Its year-over-year increase rose from 3.4% in the previous month to 3.7%, exceeding the market expectation of 3.6%, while the month-over-month increase reached 0.6%, up from 0.4% in the previous month. Core CPI, which excludes energy and food, also rebounded from a year-over-year increase of 2.4% in August to 2.6%, above the market expectation of 2.5%. The Producer Price Index (PPI), released the following day, likewise exceeded expectations: September PPI rose 1.3% month over month, substantially above the market estimate of 0.6%, while its year-over-year increase climbed to 6.3%, the fastest pace in nearly four years. Both releases indicate that price pressures on U.S. consumers and producers remain elevated, bringing renewed market attention to whether inflation will continue to accelerate.

2. Inflation data weigh on U.S. stocks, with technology and semiconductor shares closing lower

Hotter-than-expected inflation data raised concerns about the future path of interest rates. On October 14, the day of the CPI release, the four major U.S. stock indexes broadly declined: the Dow Jones Industrial Average fell 0.09%, the S&P 500 fell 1.11%, the Nasdaq Composite fell 1.88%, and the Philadelphia Semiconductor Index plunged 4.30%. Higher interest rates can increase corporate financing costs and reduce the discounted value of future earnings, making growth-oriented technology stocks generally more sensitive to changes in interest-rate expectations. However, after the PPI release on October 15, U.S. stocks did not continue to decline across the board; the Dow instead rose 1.08%.

Beyond equities, the bond market also saw noteworthy changes. On October 14, the day of the CPI release, the U.S. 2-year Treasury yield rose, while the 10-year yield edged lower. After the PPI release the following day, both declined. This shows that markets do not simply adjust asset prices in the same direction because inflation data exceed expectations. They also reflect Federal Reserve policy expectations, the economic outlook and other market factors. Even when economic data exceed expectations, stock and bond markets may therefore react differently.

3. With inflation pressures persisting, does the Fed need to raise rates again?

As CPI and PPI successively exceeded expectations, markets began reassessing the future direction of monetary policy at the Federal Reserve (Fed). The Fed’s primary objectives are to maintain price stability and promote maximum employment, with a long-run inflation target of 2% as measured by the year-over-year change in the Personal Consumption Expenditures (PCE) price index. Although CPI and PPI are not the Fed’s directly specified policy targets, they remain important reference points for assessing inflation trends. The Fed already raised rates by 25 basis points (0.25 percentage point) in September this year, lifting the target range for the federal funds rate to 3.75%–4.00%. If inflation remains persistently high, further rate increases may become more necessary. Yet if the labor market gradually cools, excessive tightening could restrain economic growth. A single CPI or PPI release is therefore still insufficient to determine whether the Fed will immediately raise rates at its next meeting.

4. What do markets expect from the next FOMC rate decision?

The Federal Reserve’s next Federal Open Market Committee (FOMC) interest-rate decision will be announced at 2:00 a.m. Taiwan time on Thursday, October 29, 2026 (2:00 p.m. U.S. Eastern Time on October 28). According to federal funds futures market expectations reflected in the CME FedWatch Tool, after the PPI release on October 15, the estimated probability of a 25-basis-point rate increase at the next meeting briefly reached approximately 33.8%. However, as markets reassessed the inflation data and policy signals from Fed officials, expectations of a rate increase subsequently eased. Based on futures market estimates on October 20 U.S. Eastern Time, the probability of keeping rates at 3.75%–4.00% was approximately 81.6%, while the probability of an increase to 4.00%–4.25% was approximately 18.4%. This indicates that markets still see a pause in rate increases this month as the main scenario, while remaining attentive to the possibility of further tightening.

In addition to the rate-decision probabilities shown by FedWatch, Treasury yields are an important indicator of market expectations. The 2-year Treasury yield is generally more sensitive to expectations for near-term Federal Reserve policy, while the 10-year yield reflects not only interest-rate policy but also long-term inflation, economic growth and the term premium. According to data published by the U.S. Department of the Treasury, on October 14 the 2-year Treasury yield rose from 4.79% on the previous trading day to 4.82%, while the 10-year yield edged down from 5.21% to 5.19%. On October 15, the two yields fell to 4.77% and 5.10%, respectively. This shows that even when successive inflation releases exceed expectations, the bond market can move differently across maturities because they reflect different economic factors. FedWatch and Treasury yields can therefore offer complementary perspectives on market expectations. Changes in yields, however, are not equivalent to the probability of a Federal Reserve rate increase; the final decision remains subject to the FOMC’s official announcement.

5. Which important economic releases should investors watch before the FOMC meeting?

With CPI and PPI successively signaling stronger inflation, market attention will gradually turn to the Fed’s rate decision at the end of October. Before the October 27–28 FOMC meeting, investors can still monitor several important economic indicators, including U.S. initial jobless claims on October 22, as well as the preliminary manufacturing and services PMI readings and the University of Michigan consumer sentiment and inflation expectations surveys released on October 23. These data help assess whether the U.S. labor market is cooling, whether business activity is slowing, and what the public expects for future prices. Overall, the latest CPI and PPI data once again highlight the challenge the Fed faces in controlling inflation while sustaining economic growth. Beyond whether the Fed adjusts interest rates, the more important focus will be whether the post-meeting policy statement and the Chair’s press conference signal the possibility of further monetary tightening.