Markets react: Why can one economic report move stocks and gold | How Money Works, Chapter 8

1Her life

Maya has a 401(k), a retirement account she gets through work. One Wednesday she checks her phone at lunch and sees "Stocks fall after hot inflation report." That evening, her balance is a little lower than yesterday.

Nothing happened at her company. Nobody she knows lost a job. So why did one report about prices move her retirement savings in a single day?

2How it works

Prices already include what people expect. Before a big report, economists publish forecasts. The middle of those forecasts is called the consensus forecast, and investors buy and sell based on it. By the time the number comes out, the expected part is usually already in the price. Investors call this "priced in."

So the surprise is what moves markets. What matters is the gap between what was expected and what came out. A report can show prices rising and still lift stocks, if it came in lower than expected. A small surprise can matter a lot when everyone is watching that number.

It happens in minutes. Big US reports like CPI (Consumer Price Index) and the jobs report come out at 7:30 AM CT (Central Time), an hour before the stock market opens. Futures, contracts to buy or sell something at a set price on a later date, trade nearly around the clock and react first. By 8:30 AM CT, when stocks open, the first reaction is often already in the prices.

Why an inflation surprise reaches stocks. Hotter inflation raises the odds the Fed will raise rates (chapter 6). Higher rates make borrowing more expensive for companies and customers, and they make safer choices like US government bonds (Treasuries) pay more, so investors may pay less for stocks. Companies whose biggest profits are expected far in the future, like many tech companies, are often hit hardest.

Why it reaches gold. Higher expected rates often push the dollar up and make gold, which pays no interest, less appealing (chapter 7).

You can watch the odds move. A tool called CME (Chicago Mercantile Exchange) FedWatch uses prices in the futures market to estimate the chance of a Fed rate change at each meeting. When a report surprises, those odds can jump within minutes.

3It really happened

Oct 14, 7:30 AM CT

0.3% vs 0.2%

The CPI report showed core prices (which leave out food and energy, because they jump around) up 0.3% in September. Economists polled by Reuters had expected 0.2%. That's a tenth of a percentage point.

See it in Historical Data →

That morning

22% → 52%

Before the report, the futures market put the chance of a Fed rate increase at its Oct 27–28 meeting at about 22%. Soon after, it jumped to about 52%, according to Reuters. By the close, it had eased to about 37%, still well above where it started. Stocks opened lower, and spot gold, the price for gold bought right now, was down 1.7% by 8:03 AM CT, to $4,086.06 an ounce, according to Reuters.

At the close

Nasdaq −1.9%

By the close, the Nasdaq Composite had fallen 1.9% and the S&P 500 1.1%, according to AP.

Oct 28, 2026

Hold

Two weeks later, the Fed didn't raise rates. It held them steady.

See it in Historical Data →

The honest part

Markets move on changes in what people expect, not just on what ends up happening. The odds jumped, and the Fed still held. Odds are estimates, not promises. And the same kind of surprise doesn't always bring the same reaction. That's why our Historical Data shows each report one by one: what was expected, what came out, and how markets closed. History, not a prediction.

Next · Chapter 9 of 9Back to MayaWith all of this moving around her, what are Maya's choices for her own money? Saving, investing, and the long game.Keep reading →

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Sources for this chapter (8)

Maya and Jordan are fictional; every number in "It really happened" is real and sourced. We explain how it works. What you do with it is your call. Commentary and education only. Not financial advice.