South Korean securities firms will keep their overseas stock desks operating during the Sept. 24–25 Chuseok holiday, even as the domestic market closes. Shinhan Securities will run its global desk for overseas stocks and derivatives around the clock, while Mirae Asset Securities and iM Securities will operate their overseas desks normally. The firms support trading and inquiries involving markets including the U.S., China, Hong Kong, Japan, Vietnam and Indonesia. Promotion of these services is more muted than last year after financial authorities urged restraint on overseas-investment marketing at the end of last year, citing high exchange rates and investor-protection concerns. Brokers nevertheless need to maintain response systems because foreign markets remain active and developments involving oil prices, interest rates, Middle East tensions and scheduled U.S.-China talks could affect volatility. Korean retail investors known as Seohak ants will continue trading foreign stocks while the domestic market is closed.