South Korea's Financial Supervisory Service (FSS) urgently called five virtual asset exchanges, including Upbit and Bithumb, to discuss deposit utilization rates. The move stems from the recent intensification of inter-exchange rate competition, especially after Bithumb once raised the annualized interest rate to 4.0%. The FSS stressed that utilization rates should be calculated reasonably, and asked exchanges to report in detail on deposit operation and rate calculation methods.