Wholesale Inflation Hits 5.4% Annually as Oil Tops $100 and Fed Rate Hike Looms

A Hot Inflation Reading Rattles Markets

Wall Street got an uncomfortable jolt on Thursday, September 10, when the government's latest wholesale inflation report landed — and oil simultaneously crossed a psychologically significant threshold. August's producer price index, a measure of wholesale inflation, rose a seasonally adjusted 0.4% for the month, in line with the Dow Jones consensus — but on an annual basis, that put PPI at 5.4%, still well above the Federal Reserve's 2% inflation target. The headline number may have matched forecasts, but the broader picture was anything but reassuring.

Stock market futures turned negative following the report, the release of which coincided with U.S. crude oil prices topping $100 a barrel, while Treasury yields moved sharply higher. The stock market opened in the red, with the S&P 500 down 0.6%, the Dow off 0.3%, and the Nasdaq Composite falling 1.2%. Investors who had hoped for a calm, uneventful data release didn't get one.

Energy Prices Are Doing the Heavy Lifting

Energy prices in particular — and goods prices overall — were responsible for most of the increase. Final-demand energy prices rose 4.2%, pushed largely by soaring diesel, which surged 24.1%. Goods prices broadly increased 1.1%. That kind of diesel spike doesn't stay contained to the gas pump. Higher diesel prices could make groceries, clothes, and other everyday items more expensive as the costs work through supply chains.

Processed goods for intermediate demand jumped 1.8% month-over-month and 11.5% annually, while unprocessed goods gained 1.1% monthly and 12.8% annually. That pipeline inflation — measuring raw and semi-processed materials before they reach final buyers — could signal further cost increases working their way toward finished goods manufacturers. In plain terms: what businesses pay today, consumers often pay tomorrow.

The Fed's Next Move Is Now Front and Center

A spike in wholesale prices and oil topping $100 a barrel pushed the chances of a Federal Reserve rate hike to nearly 70%, with markets also pricing in a possible second increase before year-end. Markets priced in a 69.8% chance of a 25-basis-point hike at the September 15–16 Federal Open Market Committee meeting, up from 61.2% just a day earlier. The benchmark 10-year Treasury yield climbed 7 basis points to 4.92% following the PPI data — its highest level since the financial crisis.

Fed Governor Christopher Waller had said earlier this month that he would consider a rate hike "if inflation comes in hot," but added that if the August CPI shows progress toward the Fed's 2% goal, he would be willing to hold rates steady. Cooper Howard, director of fixed income research at the Schwab Center for Financial Research, said the overall PPI reading was "still likely too hot for the Fed's liking," adding that it doesn't "squash the idea of a hike in the near future."

All Eyes Now Turn to the CPI Report

The August Consumer Price Index report — released today, Friday, September 11 — is the last inflation update the Federal Reserve will see before it meets next week. After August's jobs report came in much better than expected and lifted odds of a September rate hike, this week's inflation data carries outsize significance for the Fed and its upcoming policy decision. Economists surveyed by Dow Jones forecast a monthly CPI rise of 0.4% and a year-over-year increase of 3.4% for August.

Both the PPI and CPI numbers feed into the Fed's primary inflation gauge — the personal consumption expenditures price index — which won't be released until after the Fed's interest rate vote on September 16. That means policymakers will be making one of the most consequential rate decisions in months with incomplete data in hand. As Howard put it, "surprises matter — a hot reading could pull more Fed officials into the 'hike' camp, while a cool reading should give many committee members comfort in holding." With oil elevated, yields climbing, and inflation stubbornly above target, the margin for a reassuring surprise is razor-thin.