Tonight's September inflation data is due. If it comes in as expected, can the market relax? The headline is high at +0.6%, but Fed hike odds range from 22% to 70% depending on the source, so I don't know what to watch.
2026-10-14
The issue is not the 0.6% headline but the 0.2% core and December
Tonight's September CPI forecasts are headline +0.6% m/m (3.6% y/y) and core +0.2% m/m (2.5% y/y). The headline is three times the core because of energy. The Hormuz disruption has kept Brent near $100. The Fed leans more heavily on core, which strips out energy, when judging a hike.
Why hike odds split between 22% and 70%
The report shows odds of an October hike ranging from 22% to 64-70% depending on the source. Right after the Oct. 2 jobs report, CME FedWatch put an October hike at about 21.6%, and the same analysis said a December hike was 100% priced in (FXStreet, 2026-10-02). If so, the larger figures are likely answers to a broader question such as "a hike this year" rather than to the October meeting alone. This is an inference, not a confirmed fact. Whichever number you look at, the one thing to distinguish is whether it is the probability for the October meeting or the cumulative probability through December.
In other words, tonight's CPI decides less whether the Fed hikes in October than whether the path to a December hike firms up. With weak hiring (+29,000 jobs), October has already been partly ruled out.
Paths by outcome
| Scenario | Headline | Core | Expected flow |
|---|---|---|---|
| Only energy runs hot | Above forecast | In line (+0.2%) | 10-year yield bounces briefly, then stabilizes. If core holds, the "temporary energy shock" reading prevails |
| Upside across the board | Above | Above (+0.3% or more) | October hike odds rise again, the 10-year yield retests 5.35% (near the early-October peak), and the Nasdaq could pull back 1-2% |
| Downside | In line or below | In line or below | Risk assets rebound. But with oil above $100, CPI pressure remains after October |
The basis for calling the first scenario most likely is that the core forecast is already low. Core at 2.5% y/y is more than 1 percentage point below the 3.6% headline, so a still-lower core is hard to get and "in line" is the default. This judgment is an inference drawn from the figures in the report.
What investors should do
- Don't trade on a single number right after the release. Look at headline and core separately, and first check only whether core exceeds the +0.2% forecast.
- If the 10-year yield re-enters the 5.3% range, review whether to cut long-term bonds and growth stocks. At 5.217% it is not yet a signal.
- This CPI is the last variable before the Oct. 28 FOMC. If the result is neutral, treat it as a period when volatility subsides; if it is to the upside, a reassessment of the December path begins.
Whichever way the number comes out, judging by the headline alone can miss the direction core is signaling.