Fed Chair Warsh signals September meeting is make-or-break for inflation fight

Kevin Warsh just gave his first Jackson Hole speech as Federal Reserve Chair, and the message was about as subtle as a fire alarm. The Fed’s September 15-16 policy meeting, he made clear, is a pivotal moment in the central bank’s campaign against inflation that still refuses to cooperate.

Markets got the memo. CME FedWatch data showed the implied probability of a 25-basis-point rate hike at the September meeting jumped from roughly 35% to between 57% and 62% immediately after Warsh’s August 28 address.

The inflation problem that won’t quit

The numbers tell the story of a Fed that hasn’t yet won its fight. The central bank’s preferred inflation gauge, the PCE measure, sat at 3.7% year-over-year as of the latest reading. Zoom in on the six-month annualized rate through July 2026, and it looks even worse: 4.1%.

Warsh emphasized that controlling inflation remains the Fed’s primary objective, and that without a clear decline in underlying price pressures, the institution would have “work to do.” His approach has been to let the data do the talking, and he has explicitly said he won’t provide traditional forward guidance.

A divided committee faces a defining vote

The July 29 FOMC meeting offered a preview of the tension building inside the Fed. The committee voted 9-3 to hold rates steady at 3.5% to 3.75%, with three members dissenting in favor of a rate increase. That kind of split hasn’t been seen in a decade.

Warsh has maintained rates in the 3.5% to 3.75% range throughout his tenure while signaling openness to tightening if inflation progress stalls.

The key variable between now and the September decision is the August Consumer Price Index report, scheduled for release on September 11. That gives the committee exactly four days to digest the freshest inflation data before deliberating.

What this means for markets

The shift in rate expectations carries real consequences across asset classes. Higher rates increase borrowing costs, pressure equity valuations, and generally make risk assets less attractive relative to safer alternatives like Treasuries.

The jump from 35% to north of 57% implied hike probability represents a meaningful repricing of expectations in a matter of hours. If the committee moves to 3.75% to 4%, traders will immediately begin pricing in the possibility of further tightening later in the year.

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