10:30 a.m. Atlanta Fed GDPNow fourth quarter update.

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.

Rebounding tech stocks drove U.S. indexes higher Tuesday, a day after they tumbled on doubts about whether the artificial-intelligence frenzy really needs all the dollars being poured

Who will drive the stock market as the Fed holds its first meeting of the year? This could be the worst day in nearly five years for the PHLX Semiconductor Index, led by major weakness in hot artificial-intelligence plays like Nvidia Corp.