Recent September CPI data at 3.7% year-over-year, driven by a 9.1% surge in gasoline prices amid geopolitical energy pressures, anchors trader expectations for October. Consensus forecasts from firms like TD Securities project a 0.30% month-over-month headline rise, consistent with the annual rate holding near 3.7% due to base effects and moderation in core goods and shelter components. This underpins the 90.5% market-implied probability for 3.7%, reflecting real-capital trader consensus on limited reacceleration. The October CPI release on November 10 remains the key catalyst; upside surprises in energy pass-through or services could shift odds toward 3.8% or higher, while sharper cooling in transportation or apparel would favor lower outcomes.