October CPI Came in Hot: What Markets Are Pricing for December

Headline CPI rose 0.4% month-over-month in October (seasonally adjusted), above the roughly 0.3% consensus many economists had pencilled in. Core CPI (ex-food and energy) rose 0.3%, also above the more common 0.2% expectation.

September’s headline had been +0.6% MoM; October’s 0.4% is cooler than that prior month but still “hot vs forecast.” Core at +0.3% for a third straight month is the stickier detail people keep quoting.

Primary source: the BLS CPI release for October 2026. Secondary write-ups from Reuters, CNBC, and others match those MoM figures.

BLS did not publish the usual year-over-year headline/core rates for this report. The comparison month — October 2025 — was disrupted by a government shutdown that left gaps in data collection.

Some private estimates filled the gap (for example, Cleveland Fed-style annualised guesses circulated in press coverage). Treat those as estimates, not the official BLS YoY series.

For reading the Fed reaction function, the MoM core print and the speeches around it matter more this cycle than a missing YoY sticker.

Hours before the release, Fed Governor Christopher Waller (speaking in London) said he favoured a December increase even if inflation cooled, and that if core CPI came in “around 0.3 percent or even higher,” a larger 50-basis-point move should be considered — framing credibility risk if the Fed only did 25 bp in that case.

Core printed at 0.3%. That alignment is why “50 bp is back on the table” showed up in market commentary the same day — it is speech + data, not a vote that has already happened.

Other officials also sounded open to moving faster than a leisurely path. Speeches are inputs; the FOMC decides on 8–9 December 2026.

CME FedWatch-style pricing moved toward a near-certain December hike, with the modal bet a 25 bp increase and a smaller (but non-zero) probability of 50 bp — odds that bounced around during the session as yields ripped higher.

The more Fed-sensitive 2-year Treasury yield and the 10-year both jumped on the day of the print (cash Treasuries later faced a Veterans Day holiday closure even while equities traded). Higher yields = tighter financial conditions in the usual textbook sense.

Odds change with every speech and every data print. “Priced in” is a snapshot of derivatives markets, not a promise from the Fed.

Risk assets did not move in a straight line. Early futures weakness, choppy cash sessions, and stock-specific stories (especially in semis) mixed with the macro tape. A hotter CPI can hit duration-sensitive names even when a later session recovers.

Crypto and gold also featured in same-week “rates up, dollar firm” commentary. Correlation is unstable; do not treat one day’s chart as a rule.

If you track calendars, the next usual suspects after CPI are producer prices, retail sales, and the December FOMC — use an economic calendar, not a tip sheet.

I am not saying you should buy equities into a hike, sell because of CPI, or reposition bonds a certain way.

I am not forecasting the December decision or the terminal rate.

Inflation prints get revised; Fed speakers disagree; markets overshoot. Read the BLS release and the Fed’s own calendar if the numbers matter to you.