Bill Ackman reveals he's been building a more than $2 billion stake in Uber

Group 1 - Bill Ackman, CEO of Pershing Square Capital Management, has acquired a significant stake in Uber, totaling 30.3 million shares valued at $2.3 billion, indicating the stock is trading at a "massive" discount [1][2] - Ackman believes Uber is one of the best-managed and highest-quality businesses globally, available at a substantial discount to its intrinsic value, which is rare for a large-cap company [2] - Following Ackman's announcement, Uber's shares surged over 8%, recovering from a previous decline of 7.5% after the company provided soft guidance and reported an earnings miss [2] Group 2 - Uber's stock has experienced a rally of approximately 25% in 2025, following a disappointing performance in 2024 where shares dipped by 2% [3]