NEW YORK: Rebounding tech stocks drove US indexes higher on Tuesday, January 28, a day after they tumbled on doubts about whether the artificial-intelligence frenzy really needs all the dollars being poured into it. The S P 500 climbed 0.9% to claw back more than half of its earlier drop. The Dow Jones Industrial Average added 136 points, or 0.3%, and the Nasdaq composite rallied 2% after sliding 3.1 % the day before. The spotlight remained on Nvidia, whose chips are powering much of the
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