Inflation likely peaked for 2026 but will remain sticky, according to prediction markets

Traders on prediction market platform Kalshi think inflation likely reached a peak for the year, though they don't see a sharp move lower anytime soon. Traders think the September consumer price index, due Wednesday at 8:30 a.m. ET, will show a 3.6% increase year over year. That's in line with a FactSet consensus estimate. That would mark an increase from the 3.4% advance seen in August . Yet speculators on Kalshi place just under one-in-three odds that inflation will hit new highs in 2026. Previously, year-over-year inflation peaked at 4.2% in May . Inflation-related contracts on the platform ask traders if they think that CPI will come in above various levels for the month of September or if it will go above certain levels at any point in 2026.