Stock market today: S&P 500, Nasdaq futures sink as Wall Street doubts about tech rally creep in

Tech led a sharp retreat in US stock futures on Tuesday after a mixed session on Wall Street that saw AI optimism in megacap companies drive the S&P 500 and Nasdaq Composite higher. S&P 500 futures (ES=F) sank 0.9%, while those on the tech-heavy Nasdaq 100 (NQ=F) tumbled roughly 1.3%. Contracts on the Dow Jones Industrial Average (YM=F), which includes fewer tech stocks, lost 0.6%. The turnaround comes after AI-heavy tech names fueled gains on Monday. Amazon notched a record close after announcing a new ...