| Mobile Web

Korea regulators tighten monitoring on margin, leverage as KOSPI swings wildly

South Korea\'s KOSPI is extending a roller-coaster run, swinging sharply on foreign selling and moves in U.S. rates and oil prices. The index rebounded 8.42 percent on May 21 after recent steep declines, while volatility gauges climbed. Margin debt hit a record 36.6 trillion won and forced selling rose as the market slid earlier in the week. Regulators are stepping up monitoring and urging restraint ahead of new single-stock 2x leveraged ETFs.