Extreme volatility gripped the Kospi on Tuesday as investors piled into short-term trades in leveraged exchange-traded funds (ETFs) tied to chipmakers, with the benchmark index plunging from above 8,900 to 8,503.48 in just five minutes.

Extreme volatility gripped the Kospi on Tuesday as investors piled into short-term trades in leveraged exchange-traded funds (ETFs) tied to chipmakers, with the benchmark index…

South Korea's stock market is swinging at a pace not seen since the global financial crisis, as a record-setting Kospi rally collides with rising leverage and f