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AI Stocks & MarketsYahoo Finance AIPublished: Apr 20, 2026, 19:00 JST

Bill Ackman's Pershing Square fund has concentrated over 25% of its portfolio in two AI stocks, raising questions about whether retail investors should follow his lead.

Bill Ackman's Pershing Square fund has concentrated over 25% of its portfolio in two AI stocks, raising questions about whether retail investors should follow his lead.

Billionaire investor Bill Ackman has made significant bets on two artificial intelligence companies through his Pershing Square hedge fund

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