The sudden reversal shows how the hottest AI trade and top-performing stock of the year is colliding with a broader market rotation out of big tech.

Palantir's price-to-sales ratio of 114 is way above OpenAI's 17. Palantir's success in defense work could block access to growth as enterprise AI payoff remains elusive

Software stocks have been under pressure—and there may be more selling to come as highflying shares of Palantir finally succumb to gravity.

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 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.

Nvidia, Palantir and other superstar stocks that surged in the mania surrounding artificial-intelligence technology are dragging Wall Street lower again on Wednesday. The S&P 500 fell 0.9% and was on track for a fourth straight loss after setting an all-time high last week.