**Elevated inflation readings and the Federal Reserve’s September 2026 Summary of Economic Projections remain the dominant drivers behind Polymarket’s leading Hike–Pause–Hike outcome at 66.5%.** After the unanimous 25-basis-point increase to the 3.75–4.00% target range, the median dot plot shifted higher, with 16 of 18 participants expecting at least one additional hike by year-end. Recent August CPI data showed headline inflation at 3.4% and core at 2.4%, while the September release—due October 14—will provide fresh evidence on whether shelter costs and energy prices continue moderating. Traders also weigh the resilient labor market and upcoming October 28 and December 9 FOMC meetings, where the path of monetary policy will hinge on incoming data rather than forward guidance alone. Market-implied odds reflect this data-dependent stance, pricing in a measured two-hike cycle for 2026 amid ongoing uncertainty about the inflation trajectory.