Key Takeaways Nvidia shares tumbled Wednesday, dashing hopes for a quick recovery from losses earlier in the week amid concerns about competitiveness of American AI firms and their spending on artificial intelligence.

Nvidia staged a moderate rebound on Tuesday, rising as much as 3%, following a 17% drop the prior day. More broadly, major US indexes rallied after the S&P 500 and Nasdaq 100 saw sharp losses on Monday amid concerns over the Chinese AI firm DeepSeek's rapid and seemingly cost-effective advances.

Chip stocks in the U.S. and Europe rose on Wednesday for a second straight day, recovering from a punishing selloff triggered by China's low-cost DeepSeek artificial intelligence tool at the start of the week.