KOSPI Extends Historic Two-Day Plunge as SK Hynix Earnings Miss Deepens Global AI Chip Stock Sell-Off

Short sellers are quickly turning their attention to SK Hynix' s newly listed U.S. shares, adding bearish bets just weeks after the South Korean memory-chip maker made its American market debut and injecting another source of volatility into an already turbulent semiconductor sector.

SK Hynix shares slumped nearly 10% after an earnings miss.

Korea's bourse operator on Wednesday activated a sell-side sidecar for the benchmark Korea Composite Stock Price Index (KOSPI) after the index fell sharply, led by tech losses.

South Korea’s Kospi share index dropped nearly 7% on Wednesday on prolonged selling of chipmaking shares.