Explainers
Why KOSPI moves so violently: two chip stocks, half the market, and 10x leverage
Samsung and SK Hynix are now nearly half of KOSPI, single stocks can swing 30% in a day, and Korean retail investors trade with leverage tools that go up to 10 times their money. Here is how those three things combine into one of the world's most violent stock markets.
Jul 13, 2026
