AI Bubble Fears Slam Global Markets Today, 18 November 2025
Global stocks fell sharply Tuesday as investors questioned whether the AI boom has become a bubble. The Dow lost 498 points, the S&P 500 dropped 0.8%, and the Nasdaq slid 1.2%, led by declines in major tech names. Europe’s STOXX 600 fell 1.8%, while Japan’s Nikkei and South Korea’s Kospi each sank over 3%. Nvidia is now down about 8–10% in November.