The S&P 500 was down 1.6% in morning trading. Big Tech stocks took some of the heaviest losses, with Nvidia down 11.2%, and ...

Wall Street’s superstars are tumbling as a competitor from China threatens to upend the artificial-intelligence frenzy ...

The emergence of DeepSeek's free assistant has placed big doubts over the US market's AI-driven rally of the past two years.

Chinese AI chatbot DeepSeek has displaced OpenAI’s ChatGPT as the most downloaded app on the Apple App store and the market ...