KOSPI dives on AI rally profit-taking, triggers second circuit breaker
South Korea’s KOSPI slumped about 8% and triggered a second circuit breaker as investors booked profits from a record AI-driven rally, led by semiconductor giants SK Hynix and Samsung Electronics; sentiment was dampened further by MSCI index-review news that Korea won’t be included in the developed markets, though the index remains a top performer year-to-date.