KOSPI -10.8%: Three Reasons Behind Today's Crash — And What It Means for Korean Stock Investors
KOSPI -10.8%: Three Reasons Behind Today's Crash — And What It Means for Korean Stock Investors Published July 28, 2026: South Korea's KOSPI closed down 10.8% at 6,023.66 today — its worst single session in years. Samsung Electronics fell 13.4%. SK Hynix dropped 14.7%, with its Nasdaq-listed SKHY shares closing at $143 — below the $149 IPO price set just 18 days ago. Trading was halted by circuit breaker for 20 minutes. Three specific catalysts converged to trigger the selloff. This article explains each one clearly — what happened, what it actually means, and what investors should do next. Every major market crash has a story. Today's KOSPI collapse was not random panic — it was the convergence of three specific developments that hit the same nerve simultaneously: China's semiconductor ambitions, AI demand credibility, and the worst possible timing for SK Hynix. Understanding each of these three triggers — separately and together — is essential for any inves...