To trade futures and options contracts listed on KRX, a foreign investor may designate custodian banks as standing proxies (through custodian bank agreements and standing proxy agreements to facilitate trading).

A custodian bank as a standing proxy opens accounts at foreign exchange banks and futures companies, deposits, and withdrawals investors' money and monitors investors' properties for them. A foreign investor should designate foreign exchange banks through a foreign currency exchange agreement to execute his foreign exchange transactions and transfers. Most foreign exchange banks also do custodian bank and standing proxy operations. A foreign investor should designate securities and futures companies to trade futures and options traded on KRX.