Custodian bank

A custodian bank, or simply custodian, is a specialized financial institution responsible for providing securities services. It provides post-trade services and solutions for asset owners (e.g. sovereign wealth funds, central banks, insurance companies), asset managers, banks and broker-dealers. It is not engaged in "traditional" commercial or consumer/retail banking like lending.

In the past, the custodian bank purely focused on custody, safekeeping, settlement, and administration of securities as well as asset servicing such as income collection and corporate actions. Yet, in the modern financial world, custodian banks have started providing a wider range of value-adding or cost-saving financial services, ranging from fund administration to transfer agency, from securities lending to trustee services.