Bubble or breakout? Nvidia earnings put AI boom under the microscope

(Reuters) -The fate of Wall Street's staggering bets on artificial intelligence will rest squarely on Nvidia on Wednesday when the chipmaker reports results, with investors seeking signs that bubble worries are overblown. Tech billionaire Peter Thiel's hedge fund sold ‌its entire stake in Nvidia in the third quarter, as has SoftBank CEO Masayoshi Son, although he has plowed those returns into a massive bet on OpenAI. Doubts have pushed Nvidia shares down 7.9% so far in November, after a 1,200% surge in the past three years.