Nvidia shares' 9% recovery Tuesday was the second-best day in terms of market cap added for any company ever—but the company faced another selloff Wednesday.

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.

China’s DeepSeek says it trained an AI model for less than $6 million. This is as big U.S. tech companies have poured billions of dollars into AI chips and systems for their projects.

The success of a mysterious Chinese lab has investors questioning the AI spending boom that has swept through Silicon Valley.

US tech stocks were steady on Tuesday after they slumped on Monday following the sudden rise of Chinese-made artificial intelligence (AI) app DeepSeek. Shares in chip giant Nvidia rose by 8.8%, having slumped on Monday,

Tech stocks on Wall Street took a tumble on Monday after Chinese artificial intelligence startup DeepSeek released a free AI chatbot and their app climbed to the top of app stores. CBS News MoneyWatch correspondent Kelly O'Grady explains why the company is causing a stir.

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