David Tepper Cuts Microsoft 82%, Billionaire Bill Ackman Buys $2 Billion of It. Who's Winning?

David Tepper's Appaloosa Management cut its Microsoft stake by roughly 82% in Q1 2026, while Bill Ackman's Pershing Square initiated a new position of about 5.65 million shares worth roughly $2.09 billion. The article highlights a sharp split in hedge fund positioning around Microsoft rather than any operational update from the company. The move is notable for sentiment and flow signals, but the immediate market impact is likely limited.

Analysis

David Tepper's Appaloosa Management cut its Microsoft stake by roughly 82% in Q1 2026, while Bill Ackman's Pershing Square initiated a new position of about 5.65 million shares worth roughly $2.09 billion. The article highlights a sharp split in hedge fund positioning around Microsoft rather than any operational update from the company. The move is notable for sentiment and flow signals, but the immediate market impact is likely limited.