The heaviest weight on the market was Nvidia, whose chips are powering much of the move into AI. It sank 3.5%.

The S&P 500 dipped 0.4% and was on track for a fifth straight modest loss since setting an all-time high last week. The Dow Jones Industrial Average was down 195 points, or 0.4%, as of noon Eastern ...

The Dow Jones index dropped Thursday after surprise initial jobless claims. Walmart falls as Palantir seeks direction.