Last week, the stock of Uber Technologies went on a wild ride, falling hard after Uber reported earnings on Feb. 5, only to rocket higher toward the end of the week. On earnings, while revenue and earnings per share actually beat expectations,

Uber’s stock extends its surge as hedge funder Ackman says he’s amassed a 30.3-million-share stake since early January.

Pershing Square's Bill Ackman revealed Friday that he has built a significant stake in Uber, saying the stock is still trading at a "massive" discount.In a post on X, the hedge fund manager said his fund began buying Uber shares in early January and has amassed 30.