ToplineNvidia headed toward a dubious Wall Street record Monday, as the stock at the forefront of the U.S.-led artificial intelligence revolution got a scare from DeepSeek, the Chinese AI company which developed a ChatGPT rival at a fraction of the reported cost of its American peers.

DeepSeek topped the Apple App Store chart and sparked fears the Chinese company was quickly catching up with OpenAI's ChatGPT while costing far less.

The emergence of China-based AI app DeepSeek sent shares plummeting on Monday for many U.S. tech giants, including chipmaker Nvidia and AI-backer Microsoft. Nvidia, which helped catapult market wide gains in recent years,