With Bill Ackman's posts, one of the world’s most prominent investors is intensifying a dispute between a doctor and UnitedHealth on social media.

Pershing Square Capital Management Chief Executive Officer Bill Ackman said he took down a critical post about UnitedHealth Group Inc. after the company’s lawyers told him the claims about the company ...

Pershing Square's Bill Ackman revealed Friday that he has built a significant stake in Uber, saying the stock is still ...

Uber Technologies (NYSE:UBER) rose 8% at least party after billionaire hedge fund investor Bill Ackman disclosed a stake in the ride-sharing and tech company. Ackman began purchasing shares last month ...

Tesla makes a magnificent return to join Meta and Google. But the best mutual funds can't get enough of Axon and 5 others.

What are the Magnificent Seven stocks? How much market cap weighting do AAPL, MSFT, GOOGL, AMZN, META, TSLA and NVDA have on ...