AI Is Splitting Tech Stocks Into Winners and Losers

The Korea Composite Stock Price Index (KOSPI) displayed at the Korea Exchange (KRX) in Seoul, South Korea, on Wednesday, March 4, 2026. Panic swept across trading desks in South Korea as local stocks, by far the hottest in the world over the past year, extended their freefall into Wednesday. Photographer: SeongJoon Cho/Bloomberg