Stock market today: Dow, S&P 500, Nasdaq futures falter after AI-fueled sell-off as new Trump tariff kicks in

US stock futures nudged higher on Tuesday, struggling to recover from steep losses led by fears of AI disruption as President Trump's new global tariff came into effect. Dow Jones Industrial Average futures (YM=F) were up about 0.2%. Contracts on the S&P 500 (ES=F) hovered above the flatline. Nasdaq 100 futures (NQ=F) added 0.3%, as AMD (AMD) shares jumped about 10% after the chipmaker entered a deal to provide Meta (META) with a huge amount of GPUs for the Facebook owner's AI buildout. The cautious reb ...