Two weeks ago, the ISM said input costs were surging. Last week, PepsiCo cut its profit forecast in half. Friday, Michigan inflation expectations hit 4.7%. This morning, the CPI confirmed all of it. Headline inflation rose to 3.7%. Core came in at 0.3% on the month — above the 0.2% the Street expected. The hardest data just validated every warning sign the market has been getting for two weeks. The S&P fell 1%. The Nasdaq lost 1.9%. And October hike odds jumped from 17% to 50%.
The Close
Ugly day. The S&P 500 fell 1.1% to 7,719. The Nasdaq dropped 1.9% to 26,693. The Dow held up better, slipping just 0.1%, as defensive and value names absorbed the blow. The 10-year yield touched 5.33% after the CPI number hit at 8:30 a.m.
| ||||
| S&P 500 | 7,719 | −1.1% | ||
| Nasdaq | 26,693 | −1.9% | ||
| 10-Yr Yield | 5.33% | +11 bps | ||
| ||||
| Health Care | +2.5% | |||
| Consumer Staples | +2.2% | |||
| Energy | +0.6% | |||
| Materials | −0.1% | |||
| Utilities | −0.3% | |||
| Financials | −0.6% | |||
| Consumer Disc | −0.8% | |||
| Real Estate | −0.8% | |||
| Industrials | −1.1% | |||
| Comm Services | −1.3% | |||
| Technology | −3.0% | |||
|
| ||||
|
| ||||
|
| ||||
|
| ||||
|
| ||||
|
|
The damage was concentrated in tech and growth. Every rate-sensitive name got marked down as the 10-year repriced higher. Health care and consumer staples held up — the defensive playbook. Energy was mixed as oil's role in the hot CPI number cut both ways.
ASML reported this morning and fell on weaker-than-expected orders. Bank of America and Morgan Stanley both reported — Bank of America beat but the stock barely moved. The market didn't care about earnings today. It cared about 3.7%.
What The Market Is Pricing In
The September CPI did exactly what the ISM, PepsiCo, and Michigan all said it would.
Headline inflation rose to 3.7% year over year, up from 3.4% in August and above the 3.6% the Street expected. Gas prices jumped 9.1% in September — that's the Iran premium and the Hormuz disruptions showing up in the consumer's gas bill. But the headline number isn't even the problem.
The problem is core. Strip out food and energy, and prices still rose 0.3% on the month. The Street expected 0.2%. Year over year, core hit 2.6%, up from 2.4%. Shelter costs rose 0.4%. More than half the CPI basket is now growing at a rate above 3%.
When inflation is broad — when it's not just gas or food but shelter, services, used cars, and travel — it means price increases are spreading through the economy. Companies are passing costs through. Consumers are paying them. And the Fed has no choice but to respond. On Wall Street they call this broad-based inflation — and it's the one thing the Fed can't ignore.
October hike odds jumped from 17% to 50% in one morning. Two weeks ago, the market was pricing in a Fed that pauses. After the FOMC minutes, after PepsiCo, after Michigan at 4.7%, and now after core CPI at 0.3%, the market is pricing in a Fed that hikes again. The whole second half of 2026 got rewritten in two weeks.
The chain is now complete. Oil rises. Input costs surge (ISM prices paid at 77.9). Companies can't hold margins (PepsiCo cuts guidance). Consumers expect higher prices (Michigan at 4.7%). And prices are higher (CPI at 3.7%). Each link confirms the next. The market isn't guessing anymore — it's repricing the next six months with the data in hand.
I've seen this chain complete itself three times in forty years — 1990 after the Kuwait invasion, 2008 when oil hit $147, and 2022 when the Fed pivoted from "transitory" to tightening. Each time, the market sold off for weeks after the CPI confirmed what the leading indicators had been saying. The selloff doesn't happen when the warning signs show up. It happens when the hard data proves them right. Today was that day.
What's Next
Three things I'm watching this week:
01 — TSMC earnings — Thursday, October 15 before the open
Taiwan Semiconductor reports tomorrow morning. After the chip selloff that's taken the semiconductor index down 14% from its August peak, TSMC's AI demand numbers are the only thing that can stabilize the trade. Strong guidance says the AI build-out is still real. Soft numbers mean the growth story that carried the S&P to a record gets a second repricing on top of the rate repricing.
02 — Retail sales — Thursday, October 15 at 8:30 a.m. ET
September retail sales hit tomorrow morning. After the CPI showed consumers are paying higher prices, retail sales will tell you whether they're still spending at those prices or pulling back. A strong number means the economy is absorbing the inflation — which gives the Fed even more reason to hike. A weak number means the consumer is cracking.
03 — October hike odds — daily watch
The futures market just moved from 17% to 50% on one CPI print. Watch whether that number keeps climbing this week. If it crosses 60% by Friday, the market is telling you the October hike is a done deal and the rest of Q4 needs to be repriced around a higher rate path.
The warning signs showed up over two weeks. The hard data confirmed them this morning. The question now isn't whether inflation is a problem — it's how much more the Fed has to do about it.
That's it for today. See you tomorrow after the close.
