Billionaire Families Invest in Chips: Appaloosa Raises Micron 11%

In the first quarter of 2026, private investment firms increased stakes in semiconductor and energy stocks amid geopolitical tensions from the Iran war. David Tepper's Appaloosa Management raised its investment in Micron Technology (MU) by 11% to $562.5 million and increased its share in Taiwan Semiconductor (TSM) by 18% to $448.6 million. Notably, Sandisk saw a new position of $179 million established by Appaloosa, with other family offices also investing in major firms like Nvidia (NVDA) and Broadcom (AVGO). These moves occurred as shares of key semiconductor stocks rose significantly, with Micron and Sandisk gaining about 60% and 50% respectively over the prior month.