Investment management

Custodian

What is Custodian?

A custodian is a financial institution that safeguards client assets and supports settlement, income collection, corporate actions, and asset records.

Account aggregation should distinguish assets verified directly from a custodian from positions supplied by a manager, administrator, or user. Reconciliation differences, pending trades, restricted assets, collateral, and securities on loan need explicit status so a consolidated view does not imply the same certainty or availability for every balance.

Cash held through the custody chain can remain a claim on a bank and should not automatically be described as segregated securities or risk-free money. Applicable deposit protection also requires verification.

Safekeeping role

Custodians maintain accounts and records showing client entitlements to securities and cash, often through central depositories, subcustodians, and correspondent banks. Assets may be registered in nominee or street name while beneficial ownership remains with the client. Legal segregation and insolvency treatment depend on account structure, asset, and jurisdiction.

Operational services

Services can include trade settlement, cash movement, foreign exchange, income collection, tax processing, corporate actions, proxy materials, collateral, securities lending, and reporting. Global custody requires local-market networks and time-sensitive instructions. A custodian typically records and services assets but does not decide what the portfolio should own.

Custodian versus related roles

A broker executes trades and may also custody assets. A fund administrator calculates books and NAV, while a depositary or trustee can have additional oversight duties. Prime brokers provide financing and trading services alongside custody-like functions. Titles are not interchangeable, and one group can perform several roles through separate legal entities.

Risks and controls

Operational error, cyberattack, fraud, failed settlement, incorrect corporate actions, subcustodian weakness, cash-bank exposure, and legal uncertainty can cause loss or delay. Asset segregation reduces some risk but does not eliminate market or counterparty exposure. Reconciliations, dual authorization, account controls, insurance, resilience, and independent audit are important safeguards.

Practical due diligence

Review legal entity, regulation, financial strength, account title, segregation, lien and reuse rights, subcustodian network, cash treatment, cybersecurity, business continuity, service levels, error liability, and exit portability. Independently reconcile manager, administrator, and custodian records. Understand which hard-to-hold assets rely on manager records rather than direct third-party custody.

Sources and further reading

Related terms
Fund administratorSettlementCounterparty riskDue diligenceShort selling
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