Wall Street ended down, weighed down by losses in Nvidia and other chipmakers after top executives in US artificial intelligence companies raised safety concerns and called for a slowdown in the development of AI. Lisa Bernhard reports ▻ ↧ Wall Street ends down, calls for AI slowdown pummel chipmakers Wall Street ended down on Monday, weighed down by losses in Nvidia and other ​chipmakers after top executives in U.S. artificial intelligence companies raised safety concerns and called for a slowdown in the ‌development of AI.