October rate-hike odds jumped above 66%. Here's exactly what changed this week

The Federal Reserve raised its benchmark rate on September 16 to a target range of 3.75%–4%, its first increase since 2023, and signalled that another was possible before year-end. Markets spent the following week arguing about whether that hike would be a one-and-done. This week the argument ended.

Pricing in fed funds futures now puts the odds of a 25 basis-point increase at the October meeting above 66%, according to the CME FedWatch tool — up from 55.4% a day earlier and a world away from the 8.8% priced a month ago. By Thursday, some desks put the implied probability closer to 70%, with a slight majority also pricing a further increase in December.

The two numbers that moved the market

First, S&P Global's September flash composite PMI surged to 58.4, the strongest reading since July 2021. Any print above 50 signals expansion; the high 50s signals an economy running hot. The detail that mattered more was the prices-paid index at 66.4, with the survey noting that firms' input costs jumped at the steepest rate in four years, led by fuel and transport.

Second, weekly initial jobless claims fell to 197,000, below expectations near 204,000. A tight labor market removes the argument that the Fed needs to protect employment by holding rates steady.

Put together, the message was hard to miss: growth is accelerating, cost pressure is building, and the labor market is not asking for help.

What Fed officials have actually said

The September statement was unusually direct, saying that inflation "remains elevated" and that the committee "will deliver price stability." The dot plot showed 16 of 18 participants expecting at least one more increase this year, with four open to two.

Chair Kevin Warsh has repeatedly framed the September move as removing accommodation rather than tightening policy — language that leaves room for more. He has also pushed back on the committee's own projection that inflation returns to 2% only by 2029, calling that too slow. Governor Michael Barr told a housing conference in Chicago on Wednesday that "further policy adjustments are likely to be needed to ensure inflation comes down to target in a timely fashion."

Not everyone reads it the same way. Some strategists expect the committee to skip October and move in December instead, on the view that six weeks is not enough time to confirm a trend in the data — a compromise between the committee's hawks and the members who are less enthusiastic about a string of hikes.

Rate expectations have swung from 8.8% to the mid-60s in a month. That is the number investors should hold on to — not the forecast itself, but how fast it changed.

Why it matters beyond the bond market

Fed expectations set the short end of the yield curve, and the two-year Treasury yield has climbed into the mid-4.9% range, its highest since May 2024. That feeds the dollar, which has firmed to around 101 on the dollar index, and it pressures anything valued on long-dated cash flows.

It also changes the arithmetic for savers and borrowers. Deposit and money-market rates track the funds rate closely, while credit cards, business loans and variable-rate debt reprice higher within a billing cycle or two.

The next markers are Friday's August durable goods orders and the final September consumer-sentiment reading, which includes the inflation-expectations series the Fed watches. Soft readings would test whether this week's repricing has run too far; firm readings would leave October looking close to settled.