South Korea’s KOSPI plunges 7.57% as AI doubts rattle investors

Samsung and SK Hynix led a brutal sell-off as investors questioned whether massive AI spending will ever pay off South Korea’s stock market just had the kind of day that makes portfolio apps feel like horror films. On October 15, 2026, the KOSPI index fell 7.57% to close at 5,554.22, its lowest finish since April. The culprit was a growing crisis of faith in artificial intelligence. Specifically, investors are asking whether the enormous sums being poured into AI infrastructure will ever turn a profit. The damage was concentrated where you would expect.

Source: Crypto Briefing