South Korea Regulator Calls Emergency Meeting on 9% KOSPI Plunge

The KOSPI index sank 9% on October 15, plummeting past the 8% threshold to trigger a 20 minute circuit breaker that froze all equity and program trading. This crash extends a seven session rout where the index fell 21%, erasing $880 billion or ₩1,186 trillion in market value and leaving the index 40% below its June 19 record high. Shares of Samsung and SK Hynix each dropped 7% as investors reacted to high US inflation, debt at CoreWeave, and predictions of memory oversupply by 2029 driven by increased production in China.