Wall Street Crashes as DeepSeek AI Spark Triggers Nvidia Plunge

U.S. equities tumbled Wednesday with the Nasdaq Composite leading losses as Chinese AI startup DeepSeek triggered a broad selloff in artificial intelligence infrastructure stocks. Nvidia shares cratered 16%, marking one of the steepest single-day declines in the semiconductor giant’s history, as investors reassessed valuations in the AI sector amid intensifying global competition.

Analysis by Arthur Sterling (Macroeconomics Editor).