A Chinese start-up that didn’t exist 18 months ago just triggered a meltdown that shows just how vulnerable Wall Street is.

A tech sell-off on Monday saw more than $1 trillion in value erased over concerns over China's DeepSeek AI app.

Wall Street and Silicon Valley were in a tailspin on Monday due to the stunning rise of DeepSeek – a Chinese artificial intelligence startup that claims to have developed an advanced model at a

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AI stocks fell across the board as the investment community absorbed news of a potentially more cost-effective Chinese AI model — and began to question the Western world’s gargantuan spending on AI infrastructure.

The S&P 500 dropped 1.7 per cent, and the Nasdaq 100 slipped 3.1 per cent. With big tech stocks crashing, US stocks were set for their worst day since the last US Federal Reserve policy verdict roiled

Global investors dumped tech stocks amid the emergence of a low-cost Chinese AI model, leaving Nvidia with a record one-day loss for any company on Wall Street.

Nasdaq futures fell over by 5%, accompanied by a selloff in U.S. technology stocks, as concerns grew over a more cost-effective artificial intelligence model from China potentially disrupting the dominance of U.

A surprisingly efficient and powerful Chinese AI model has taken the technology industry by storm. It's called Deepseek R1, and it's rattling nerves on Wall Street.