The S&P 500 slid 0.6% on Tuesday, Aug. 19, 2025, as tech losses weighed on the index. Palantir shares plunged as a well-known ...

Shares in Palantir fell as much as 9% in late trading on Tuesday amid a broad AI pullback and a critical short-seller report.

Palantir shares tumbled Tuesday afternoon, extending recent losses as a high-profile short seller fueled worries the stock ...