Return of High-Risk Bets That Burned Traders Adds to Korea Woes

South Korea’s deep-pocketed retail investors are flocking to a leveraged instrument that has inflicted severe losses in the past, adding to concerns about abrupt unwinding of wagers as the stock market gyrates.

South Korea’s deep-pocketed retail investors are flocking to a leveraged instrument that has inflicted severe losses in the past, adding to concerns about abrupt unwinding of wagers as the stock market gyrates.