Recent September 2026 CPI data showed headline inflation accelerating to 3.7% year-over-year and 0.6% month-over-month, driven primarily by a sharp gasoline surge tied to Middle East energy disruptions, while core CPI rose to 2.6%. Traders price limited further upside in the “How high will inflation get in 2026?” market, with probabilities below 20% for peaks above 4.5%, reflecting expectations that tariff effects and AI-related demand will remain contained. The Federal Reserve’s September 25-basis-point hike to the 3.75–4.00% target range, alongside forecasts for October CPI cooling to roughly 0.3% month-over-month, supports a measured policy path. Key near-term catalysts include the late-October FOMC decision—markets largely expect a hold—and the November 10 CPI release, which could clarify whether energy pass-through fades or broadens into services and goods prices.