Custodian banks are very different from the general banks that we use every day, whether for saving, withdrawing money or deposits, custodian banks focus more on managing investment assets for both individuals and institutions. In other words, a custodian bank is an institution that provides investment portfolio custody services related to securities and mutual funds. Some well-known global custodian banks, for example: JPMorgan Chase, Bank of New York Mellon, State Street, Bank of China, OCBC Sekuritas Indonesia, etc.