Recent September CPI data, with core prices rising 0.3% month-over-month against a 0.2% consensus, has lifted analyst estimates for the Core PCE MoM reading due October 29 and reinforced trader focus on persistent services inflation. The August Core PCE print of 0.2% came in below expectations, but the CPI surprise—driven by shelter, transportation, and recreation components—has shifted implied probabilities toward a 0.3% outcome at 58% market-implied odds. Broader context includes elevated energy prices and a 3.0% year-over-year core rate in August, keeping the Fed’s preferred gauge above its 2% target and supporting expectations for steady policy rates. The closely watched release will clarify whether recent CPI strength translates into PCE or reflects temporary factors.