Stock market breadth held up well in Monday morning trading, but a selloff among stocks linked to the artificial-intelligence trade was weighing on the S&P 500. The S&P 500 was down 1.7%, even though ...
U.S. tech stocks plunged on Monday, amid a wider market selloff. The culprit: DeepSeek, a Chinese artificial intelligence company that last week introduced a new — and low-cost — model into the ...