Tepper's move, disclosed in a 13F filing, increased his Amazon (AMZN) position to approximately 4.3 million shares. This investment makes Amazon his top holding, up from third place in Q4 2025. The firm focused on Amazon's cloud market leadership and custom silicon business (Trainium and Graviton), which has crossed a $20 billion annual revenue run rate, rather than chip supplier Nvidia (NVDA). This occurred during a quarter when Amazon insiders, including Jeff Bezos and CEO Andy Jassy, sold shares, and Berkshire Hathaway fully exited its Amazon position.