Kospi selloff resumes, tanks nearly 4% as AI unwinding continues; Iran war uncertainty dents mood

South Korean stocks fell sharply on Wednesday, with the benchmark KOSPI dropping up to 3.6%, as semiconductor shares resumed their decline and investor sentiment was hit by a U.S. strike on Iran. The selloff underscored concerns about the market's reliance on a handful of chipmakers that have powered this year's AI-driven rally.