The closely matched market-implied odds for October 2026 Core CPI month-over-month, with 0.2% at 45.5% and 0.3% at 36.5%, stem from traders weighing persistent but moderating inflation trends against recent labor market softening. September's core reading and prior months' data have kept expectations anchored near the 0.2-0.3% range, while Treasury yields and Fed communications signal caution on the pace of disinflation. Key differentiating factors include upcoming nonfarm payrolls and any revisions to earlier CPI prints, which could shift the balance ahead of the mid-November release. These probabilities represent aggregated sentiment from capital at risk rather than forecasts.