U.S. stock indexes ended mixed after Nvidia, Palantir and other superstar stocks pared most of their steep losses from the morning. The S&P 500 dipped 0.2% Wednesday after trimming a

Nvidia, Palantir and other superstar AI stocks are dragging Wall Street lower again. The S&P 500 fell 0.9% Wednesday and was on track for a fourth straight loss after setting

Nvidia, Palantir and other superstar stocks that had surged in the mania surrounding artificial-intelligence technology are dragging Wall Street lower again on Wednesday. The S&P 500 dropped 1% and was on track for its worst day since the first of the month.