US-listed shares of tech giants Nvidia, TSMC, and others are gaining some lost ground after China's DeepSeek rattled stock markets.

Global investors are worried the emergence of a low-cost Chinese AI model will threaten the dominance of AI leaders.

US chip giant Nvidia suffered a record wipeout on Monday after Chinese startup DeepSeek upended the tech sector — and the rout cost its CEO Jensen Huang more than $20 billion in a single day. DeepSeek said it built its new AI model in just two months for less than $6 million – a fraction of the training costs of its US rivals – and without access to Nvidia’s powerful,