Last updated: September 30, 2026
The Federal Reserve’s preferred inflation gauge came in cooler than Wall Street expected on Tuesday morning, giving markets a reason to trim their bets on another rate hike this year — even as the Fed’s own newly-hiked policy rate sits alongside Treasury yields at their highest level since 2007.
Core PCE Cools to 3.0% in August, Testing October Hike Odds
The Fed’s favored inflation gauge held steady at 3.0% annually in August, well below the 3.3% economists expected, triggering a dollar selloff and reopening debate over whether the Fed really needs the second hike its own dot plot signaled for later this year.
A Cooler-Than-Feared Inflation Print
The core Personal Consumption Expenditures price index — the inflation measure the Fed itself leans on most heavily — rose 0.2% in August and held at 3.0% year-over-year, matching July’s pace and undershooting the 3.3% consensus estimate. Headline PCE, which includes food and energy, came in at 3.4% annually versus a 3.7% forecast, with July’s reading also revised down to 3.4% from an initially reported 3.7%. Personal income rose a more modest 0.2% for the month. The softer print triggered an immediate reaction in currency markets: the U.S. Dollar Index slid about 0.3% to roughly 101.05, with the greenback weakening against most major currencies as traders priced in a slightly less aggressive Fed path.
Why the Fed Hiked in the First Place
The August PCE data lands just two weeks after the Fed’s September 16 meeting, where the FOMC voted unanimously, 12-0, to raise the federal funds rate by 25 basis points to a target range of 3.75%–4.00% — its first hike since 2023. Fed Chair Kevin Warsh was blunt about the reasoning at the time: “The plain fact is that inflation is too high, and has been for too long.” The committee pointed to August CPI data showing prices rising 0.4% for the month — the largest monthly jump in four months — alongside a resilient labor market (4.1% unemployment, 162,000 jobs added in August) that gave policymakers room to prioritize fighting inflation over supporting growth. Geopolitical tension in the Middle East, which pushed crude oil above $100 a barrel and diesel to record highs above $6 a gallon, added another inflationary crosscurrent. The Fed’s own Summary of Economic Projections signaled it wasn’t done: 16 of 18 participants projected at least one more hike before year-end, with four seeing room for two, pushing the median 2026 rate projection up to 4.1% from June’s 3.8%.
What Traders Are Watching Into October
Ahead of Tuesday’s PCE release, markets had priced roughly 72.5% odds of another quarter-point hike at the Fed’s October meeting, per CME FedWatch data, with the 10-year Treasury yield trading near 5.25% — its highest level since 2007. New York Fed President John Williams reinforced the “higher for longer” message on September 24, saying “another hike by the end of the year looked like a reasonable way of thinking about it,” while cautioning that the committee would keep leaning on incoming data rather than pre-committing to a date, noting that “explicit forward guidance belonged to a past era.” A cooler-than-expected inflation print like Tuesday’s doesn’t guarantee the Fed skips October, but it does give the more data-dependent members of the committee a stronger case for pausing if the trend holds into the next reading.
Why It Matters
Rate expectations have been the single biggest swing factor for risk assets all month. The same September 16 hike that this data is now calling into question sent both Bitcoin and Ethereum sharply higher in a counterintuitive rally, and Treasury yields near 19-year highs have been a headline risk factor in this week’s broader market setup. A softer path for rates would be a tailwind for the rate-sensitive growth and AI names discussed in our H2 2026 market outlook, and it lands hours before Micron’s fiscal Q4 report after today’s close — one of the more rate- and AI-capex-sensitive earnings prints of the week. Bitcoin’s own recent pullback from its September highs is another reminder that the path of Fed policy, not just the headline decision, is what markets are actually trading.
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For informational purposes only. Not investment advice. Economic data and Fed policy expectations can shift quickly; figures above are as of publication and always do your own research or consult a licensed financial advisor before making investment decisions.
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