TradingKey – Japanese and South Korean stock markets hit by Black Monday, with KOSPI plummeting over 8% to trigger a circuit breaker; Nikkei 225 fell nearly 2%, SK Hynix plunged 15%, Samsung dropped over 10%, and Kioxia tumbled over 12%.

During Asian trading hours on July 13, Asia-Pacific financial markets suffered a historic rout and extreme volatility. Both Japanese and South Korean stock markets experienced panic selling, with South Korean equities severely triggering a circuit breaker. Among them, the KOSPI Index completely lost the 7,000-point mark, falling over 600 points—a drop of nearly 9%—to close at 6,806.94. The Nikkei 225 Index was relatively resilient, falling 1.92% to close at 67,242.51.

KOSPI Index Chart, Source:…