Nvidia shares traded higher in the premarket Tuesday, as traders reassessed the implications of a much cheaper-to-build large-language model for the artificial intelligence trade. The chipmaker's rebound in the early session was shaky,

By Sinéad Carew, Amanda Cooper, Ankur Banerjee NEW YORK/LONDON/SINGAPORE (Reuters) -Global investors dumped tech stocks on Monday as they worried that the emergence of a low-cost Chinese artificial intelligence model would threaten the dominance of AI leaders like Nvidia,

The shocking success of a new model from a mysterious Chinese lab has America questioning its leadership of the sector.