Korean Exchange Operator to Oversee Crypto-Linked Stocks in the Midst of Suspicions on Unfair Trading According to Yonhap, Korea Exchange (KRX), through its KRX’s Market Oversights Committee, … Previous: Fidelity’s Custody Business Around Bitcoin ‘Incredibly Successful’: Johnson Next: Major Insurer Massmutual Invests $100 Million in Bitcoin for Long-Term Value