South Korea's Kospi was the world's worst-performing stock market in Q3, down 18.8% due to Samsung and SK Hynix sell-offs in early Q3, but remains up 60% YTD (Financial Times)1 report from 1 outlet in 1 language · first reported 2026-09-30 05:25 UTC · updated 2026-09-30 05:25 UTC · JSONEconomy & businessSamsungSK HynixFinancial TimesReportsSouth Korea's Kospi was the world's worst-performing stock market in Q3, down 18.8% due to Samsung and SK Hynix sell-offs in early Q3, but remains up 60% YTD (Financial Times)Techmeme · en · 2026-09-30 05:25 UTC