Trump’s New AI Chip Tariff Jolts Nvidia Stock After Hours as AMD Holds Up
New York, Jan 14, 2026, 5:18 PM ET — After-hours Nvidia shares dipped 1.5% to $183.14 in after-hours trading Wednesday following President Donald Trump’s announcement of a 25% tariff on certain advanced computing chips, including Nvidia’s H200 AI processor. Meanwhile, AMD, whose MI325X chip was also named in the White House fact sheet, gained 1.2%, closing at $223.60. (Reuters) The announcement landed amid a market that’s been pricing AI chip makers like they’re tied to policy moves. The burning question now: not only demand, but if Washington is gearing up to change the cost structure in the globe’s busiest trade