Nvidia climbed 8.8%, with the rally gaining steam throughout the day and closing near session highs. The stock at one point shortly after the open was in the red. That bounce come

Nvidia and other U.S. tech stocks are steadying a day after tumbling on doubts about whether the artificial-intelligence frenzy really needs all the dollars being poured into it. The S&P 500 was 0.2% higher in early trading Tuesday.