US Stocks Post Worst Day Since July on Inflation Surge, Yields Climb

US equities fell sharply, with the S&P 500 down 1.1% and Nasdaq down 1.9%, as rising inflation and higher bond yields pressured risk assets. Crude oil price increases and economic concerns drove yields higher, with AI and tech stocks leading losses. The move signals a repricing of rate expectations and a risk-off shift in sentiment.