South Korea's KOSPI crashes around 11%: Circuit breaker triggered, market sees worst session in 5 months

South Korean equities suffered their steepest one-day decline in nearly five months on Tuesday, with the benchmark KOSPI sliding almost 11% as a global rout in semiconductor stocks battered SK Hynix and Samsung Electronics. Investor concerns were further amplified by the blockbuster stock market debut of China's CXMT, which intensified fears over rising competition from Chinese chipmakers.