South Koreas KOSPI has fallen about 30% from its June 19 peak as a retail-driven stock market boom fuelled by leveraged products turned into a sharp sell-off. The market fallout has left investors facing substantial losses, while raising concerns over financial-market reforms, retail leverage and South Koreas ambitions to secure developed-market status.

SEOUL, Aug 21 : It was a vision to give South Korea a stock market that reflected its true economic dynamism, by shedding regulatory taboos and encouraging bolder bets - instead,…

South Koreas KOSPI has fallen about 30% from its June 19 peak as a retail-driven stock market boom fuelled by leveraged products turned into a sharp sell-off. The market fallout…