Despite selling 690,000 shares of Micron Technology (MU) in Q2, reducing its stake by 41%, the value of Appaloosa's remaining position surged from $562.5 million to $1.1 billion by June 30. This was driven by Micron's stock price soaring 242% during the quarter. Meanwhile, Tepper's fund also increased its holdings in other AI-related stocks, including Amazon (AMZN) by 16%, Taiwan Semiconductor (TSM) by 24%, and Meta Platforms (META) by 55%, while opening put options on Apple (AAPL).