Core CPI Printed 0.3%, Exactly Like August and September. That Is What Fired the Half-Point Condition.
US October core CPI printed 0.3% month on month against a 0.2% consensus, and headline 0.4% against 0.3% — both one tenth hot.
The bigger finding is that we had the policy condition wrong. We published Governor Waller's trigger as "0.3% or more from September", sourced to a wire. The Federal Reserve Board's own speech text says the condition is the data coming in "similar to the past two monthly readings" with core "around 0.3 percent or even higher". Core was 0.3% in August and 0.3% in September. So the half-point branch never needed an upside surprise; it needed a continuation, and it got the most literal one available. We also correct a number: we published that CME FedWatch gave the 50bp branch "nothing at all". It was 1.4% at 13:00 UTC, thirty minutes before the release, and about 11% afterwards — a factor of roughly eight, from a base that was never zero. Worse, one publisher naming the same feed carries 100% for a December hike at 13:00 UTC and 85% at 16:30, after a print that made a hike more likely; four readings of one named feed span 15.6 points, so these figures are not a time series. The missing year-on-year field held exactly as we said on Monday — no 12-month change for all items, core, food, energy or shelter — yet the same Table A column prints 37.4% for gasoline and minus 3.3% for used cars, which we flag rather than explain. Composition: the headline's deceleration is entirely energy, 5.2% to 0.7%, while food went from flat to 0.5% and medical care tripled.