Recent August core PCE data printed at 3.0% year-over-year after downward revisions from annual benchmark changes, cooler than the 3.3% consensus and supporting the 3.0–3.1% cluster that currently dominates Polymarket pricing for September. The 0.2% month-over-month increase also undershot forecasts, aligning with New York Fed President Williams’ comments on limited urgency for immediate policy tightening despite the FOMC’s September rate hike and median projections for core PCE at 3.4% for 2026 overall. Traders are weighing persistent above-target inflation against softer momentum and resilient consumer spending, with the next release due in late October serving as the immediate catalyst before the October 28 FOMC meeting. Market-implied odds near 64% for a 3.0% or 3.1% outcome reflect this balanced but contested outlook, where further moderation in services prices or revisions could shift probabilities toward the lower tail while sticky goods inflation would favor the upper side.