[South Korea's KOSPI Index Year-to-Date Volatility Soars to 63%, Surpassing Bitcoin's 48%] According to Bloomberg data, South Korea's KOSPI (Korea Composite Stock Price Index) has become the most volatile national stock index globally, even surpassing Bitcoin. The year-to-date return volatility of KOSPI has surged to 63%, ranking first among major national stock indices, exceeding Bitcoin's 48%.