The release of a less capital-intensive artificial intelligence model from China’s DeepSeek sent a chill through the U.S. stock market Monday, initiating a massive selloff underscoring the fragile backdrop behind the record market.

Nasdaq posted its biggest one-day percentage drop since Dec. 18 on Monday as a low-cost Chinese artificial intelligence model prompted a steep selloff in U.S. chipmakers.

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.