Coverage: September 9th–15th, 2026
Wall Street spent the week watching several inflation problems arrive at the same party. Oil crossed $100 per barrel Wednesday, hotter wholesale inflation landed Thursday, and Friday’s consumer inflation report gave the Federal Reserve another reason to keep its hand near the rate-hike button.
Then bonds joined in. The 10-year Treasury yield pushed above 5% Monday for the first time since 2023 as stocks moved lower, with the S&P 500 falling 0.48%, the Nasdaq dropping 0.56%, and the Dow losing 0.29%. Tuesday trading remained under pressure as higher oil, elevated yields, and another round of AI anxiety followed investors into the first day of the Fed’s September meeting.
The August Consumer Price Index rose 0.4% from July and 3.4% from a year earlier, a clear acceleration from July’s 0.1% monthly increase. Gasoline prices climbed 3.9% and accounted for more than one-third of the monthly increase. Core inflation rose 0.3% for the month and 2.4% over the past year.
Wholesale prices delivered their own warning a day earlier. The Producer Price Index rose 0.4% in August and 5.4% over the past 12 months. Taken together, the reports made the inflation picture considerably less comfortable just as energy prices were adding another source of pressure.
Last week, the question was whether stronger jobs and rising oil would be enough to push the Fed toward a September hike. Inflation just added its vote.
The Federal Reserve began its two-day meeting Tuesday with the policy decision due Wednesday afternoon. A Reuters poll published Monday found 85% of economists expecting a quarter-point increase, which would lift the federal funds target range to 3.75%–4.00%. Markets have also moved toward additional tightening beyond September as investors digest stronger economic data, higher energy prices, and inflation running above target.
One week can change the conversation quickly. A September hold looked very much alive earlier this month. Now the debate has shifted toward how far the Fed may need to go.
Oil officially crossed the psychological barrier that markets spent last week watching from across the street. Brent climbed above $100 Wednesday and surged further Thursday as Middle East supply disruptions intensified, with prices briefly moving above $108. By Tuesday, Brent was still trading above $100 as geopolitical risk kept a sizable premium embedded in energy markets.
Bond investors answered with a milestone of their own. The 10-year Treasury yield crossed 5% Monday for the first time since October 2023 and moved to fresh highs Tuesday. Higher oil, sticky inflation, resilient growth, heavy government borrowing, and a growing wave of AI-related corporate debt issuance have all helped push yields higher.
Five percent also changes the math. Treasuries suddenly offer stronger competition for investor dollars while mortgages, business loans, municipal borrowing, and other interest-rate-sensitive corners of the economy inherit a higher benchmark. Equities have held up remarkably well through the move. The bond market is still getting louder.
Apparently, even artificial intelligence can make Wall Street question the speed limit.
Semiconductor stocks were hammered Monday after leaders from OpenAI, Anthropic, and xAI called for slower AI development as safety concerns grew. The Philadelphia Semiconductor Index fell 5.9%, while Nvidia dropped 3.4% and Micron lost more than 5%. Broadcom and AMD also fell more than 4%.
The reaction shows how much market value now rests on expectations for enormous, sustained AI investment. A debate about development speed quickly becomes a debate about chip demand, data centers, power infrastructure, and the billions of dollars in financing supporting all of it.
Last week, 221% AI semiconductor growth still left Broadcom investors wanting more. This week, the industry floated the idea of slowing down and investors discovered they dislike that too. Tough crowd.
The Federal Reserve enters Wednesday’s decision with fresh company on the tightening side. The European Central Bank raised its deposit rate to 2.5% Thursday, its second increase this year, as the energy shock pushed euro-area inflation above 3%.
European bond markets reacted accordingly. Germany’s 10-year yield climbed to its highest level since 2011 while markets increased bets on additional ECB hikes. Higher energy costs are giving policymakers on both sides of the Atlantic essentially the same homework, with slightly different accents.
The NFL followed its bizarre Wednesday kickoff with a Sunday slate that treated punters like an endangered species.
The Bears beat Carolina 59–37 in the highest-scoring Week 1 game in NFL history. Caleb Williams accounted for four touchdowns, D’Andre Swift ran for three more, and Chicago piled up 315 yards before halftime. Buffalo beat Houston 36–31, Baltimore dropped 41 on Indianapolis, Minnesota hung 39 on Green Bay, and Detroit needed overtime to escape New Orleans 31–30.
Elsewhere, Jaxson Dart threw three touchdowns as the Giants beat Dallas 28–20 in John Harbaugh’s debut, while Philadelphia held off Washington 24–22. Then Monday night brought Patrick Mahomes back from his knee injury, and Kansas City promptly beat Denver 31–10 behind 173 rushing yards and two touchdowns from Kenneth Walker III.
Football is back.