Michael Burry, known as the 'Big Short' investor, is betting against Nvidia, citing AI chip company Etched as a strong competitor. Etched's chips offer 10 times the performance of Nvidia's at a lower cost, with around 15% of its employees hailing from Nvidia. The company completed a $700 million funding round on August 18, reaching a valuation of $21 billion, and its chips were operational in just 44 days.