Tonight at 20:30, one data release.
The market has already priced in the “bad news.”

Bottom line: The market has already absorbed the jump in headline inflation. The real battle is over core CPI.

The headline is clear: A jump in headline CPI is a foregone conclusion

Tonight, the U.S. Bureau of Labor Statistics will release September CPI. Analysts widely expect headline CPI to jump from 3.4% year over year in August to 3.6%, with a 0.6% monthly increase—the biggest in nearly five months.

There’s only one reason: gasoline. The average U.S. gas price topped $4.30 a gallon in September, setting a monthly record, while the Iran conflict kept crude prices elevated.

That number looks scary, but the market has already priced it in. Over the past two weeks, the dollar has strengthened and Bitcoin has pulled back from its highs to around $81,000 before rebounding—all in preparation for this “open-book” figure.

The wildcard: core CPI has institutions divided

Core CPI—which excludes food and energy—is what the Fed really watches.

The problem is that forecasts from major institutions are wildly divergent:

Deutsche Bank is the most dovish: 0.16%.
Citi and JPMorgan: 0.18%.
Goldman Sachs, Barclays, and Morgan Stanley are the most hawkish: 0.24%.

It’s the same data point, but the difference between 0.16% and 0.24% is 50%. For annual core inflation, that’s the difference between 2.4% and 2.5%.

This 0.08-percentage-point gap holds the key to Bitcoin’s direction over the next month.

Two scenarios, two different directions

Scenario 1: Core CPI comes in at 0.16%–0.18% (the soft end)

This supports Williams’s view—the price pressures are coming from “specific shocks” like energy and AI, not an overheated economy across the board. Williams just said on Tuesday that rates may need to rise once more this year, but there’s no need for another hike in 2027.

A soft reading would weaken expectations for a December rate hike. Risk assets would catch their breath, and Bitcoin could retest levels above $85,000.

Scenario 2: Core CPI comes in at 0.24% or higher (the hot end)

The hawks would score a clear win. Richmond Fed President Barkin just said on Tuesday that “inflation is proving persistent,” while Boston Fed President Collins said she’s watching “how widespread price pressures are.”

A hot reading would reinforce the view that “inflation is broadening,” pushing up the odds of a December rate hike. CME data show the probability of a 25-basis-point hike in December has already climbed to 69.5%. Bitcoin could be pushed back below $80,000.

An overlooked detail

Core CPI has consistently been below core PCE—the Fed’s preferred measure—which was already close to 3% in August.

This means that even if core CPI is soft, the Fed may still think underlying inflation pressures are greater than CPI suggests. A dovish CPI report may not be enough to turn the Fed dovish.

Bitcoin ETFs saw $679 million in net outflows in the first week of October, including $485 million in a single day on Wednesday—the biggest daily outflow since June. Ether ETFs have seen nearly $700 million in outflows over nine consecutive trading days. Investors are already voting with their feet, and a hotter-than-expected CPI reading would only accelerate the outflows.

Don’t be fooled by a headline reading that’s “below expectations.”

Tonight at 20:30, don’t focus only on the 3.6% headline figure.

Headline inflation is an open book; core CPI is the real wildcard tonight.