US Stocks Today | Ackman’s Pershing Square bets big on Meta, exits Hilton on AI optimism

Bill Ackman’s Pershing Square has taken a major new position in Meta, investing $2 billion on the confidence that AI adoption will unlock long-term value. The hedge fund exited Hilton, arguing Meta remains undervalued despite recent volatility, and sees AI boosting recommendations, advertising efficiency and future engagement across Meta’s platforms.