US CPI Jumps to 3.7% in September, Lifting October Fed Hike Odds to 45%

September CPI Beats Forecasts

US consumer prices rose faster than expected in September, according to the Bureau of Labor Statistics, which published the consumer price index at 8:30 a.m. ET on Wednesday. Headline CPI climbed 3.7% from a year earlier, above the 3.6% forecast and up from 3.4% in August, the fastest annual pace since May. Core CPI, which strips out food and energy, rose 2.6% against an expected 2.5%, up from 2.4% the month before. On a monthly basis, the headline index added 0.6%, in line with forecasts, while core CPI advanced 0.3%, beating the 0.2% consensus. The CPI tracks what households pay for everyday goods and services. Gasoline did much of the damage: pump prices jumped 9.1% in the month, contributing more than half of the headline increase, and the energy index rose 5.2% month over month and 20.4% year over year, after gasoline had already cost 27.4% more than a year earlier in August. Shelter costs added 0.4%, and used cars, airfares, medical services and recreation also climbed, evidence that price pressure extends well beyond fuel. In a survey of 73 economists, only 11 had looked for a 0.3% core print, and real average hourly earnings fell 0.7% from a year earlier.

Rate Futures Price a Tighter Fed

The hotter reading repriced the Federal Reserve's next move within minutes. Rate futures put the odds of a hike at the October 27-28 meeting at roughly 45% after the release, up from about 22% beforehand, with some desks showing a 45-50% range. Before the print, futures had pointed to a December move rather than an October one. The central bank raised its benchmark rate by a quarter point in September, to a range of 3.75% to 4.00%, according to its policy statement, and the surprise on core inflation revived the case for another. Treasury yields moved with the odds: the 10-year climbed from about 5.18% before the release to 5.25%, bond prices fell in step, and the dollar firmed against major peers. New York Fed President John Williams said this week he still expects one more hike before the year ends. Higher policy rates lift borrowing costs across the economy and tend to pull money away from assets that pay no interest, which is why the next decision matters for savers and risk-taking investors alike. The choice between moving this month and waiting until December now sets the cost of money heading into 2027.

Bitcoin Slips Below $83,000

Risk assets sold off within minutes of the release. Bitcoin traded near $83,350 shortly before the data, dropped to a low of $82,731 in the five minutes after it, and a later snapshot showed $82,762.83, roughly $587 below the pre-print level, with the 24-hour loss near 0.44% on about $26.9 billion of turnover. There was no clear evidence of large-scale panic selling, and whether the market reclaims $83,000 and then defends the $80,000 round figure is the near-term question. Gold fell from $4,153 to $4,117 an ounce in the same window, and the dollar already sits near an 18-month high, an added headwind for assets that pay no yield. Equity futures gave up early gains: the S&P 500 contract had been up 0.2% before the data, then traded down 0.24%, with Dow futures off 0.16% and Nasdaq 100 futures down 0.49%. The mechanism behind the move is simple: a hotter core reading raises expected policy rates and lifts real yields, pressing assets that offer no cash flow. The five-minute drop of more than $1,100 in bitcoin was the sharpest move of the session, and turnover near $27 billion gave little sign of a forced-deleveraging cascade.

Positioning Was Stretched Before the Print

Our reading: the print lands on a market that was already positioned for good news. Bank of America's October global fund manager survey put tech net overweight at the highest since the summer of 2020, average cash at 3.9% against the 5% sell signal its chief strategist Michael Hartnett uses, and the bull-bear gauge at 5.1, past the same mark. Managers named a disorderly rise in bond yields as their top risk, and the CPI release delivered exactly that within minutes. With real wages down 0.7% from a year earlier and an October hike priced near a coin flip, leveraged longs paying funding rates in perpetual futures carry a costlier book into the October 27-28 decision, and volatility in risk assets is likely to widen until the path is set.