Futures tumble as China's DeepSeek up-end Nvidia and AI stocks. Tesla, Meta, Microsoft and Apple headline earnings this week.

DeepSeek launched a free, open-source large-language model in late December, claiming it was developed in just two months at a cost of under $6 million.

Nasdaq futures lost 5%, on concern that a cheaper artificial intelligence model from China threatens the dominance of US ...

The selloff in the stocks of Nvidia, Microsoft and Amazon on the back of worries over competition from China-based DeepSeek's AI assistant is accounting for most of early selloff in Dow futures.