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 stocks opened sharply lower on Monday, as the surging popularity of a low-cost Chinese artificial intelligence model sparked a selloff in chip giant Nvidia and other Big Tech companies.

Expect questions about Fed independence at the chairman's Q&A. Apple, Microsoft, Met and Tesla report results. Alphabet may ...