US stocks fell after Nvidia revealed costly new curbs on chip exports to China, and investors grappled with uncertainty over ...

Sellers took center stage early Wednesday as news of a possible China trade barrier for Nvidia put a chill on tech firms specializing in artificial intelligence, and the markets in general.

U.S. stocks were extending their declines in afternoon trading on Wednesday after Federal Reserve Chair Jerome Powell said the U.S. central bank is [in good shape to wait and see]( ...