Sub-custodian

Roles that need it

• Custody Operations Analyst
• Corporate Actions Analyst
• Depositary Oversight Analyst
• Settlements Analyst

Skills it belongs to

• Custody and asset servicing
• Third party risk management and outsourcing rules

Related concepts

• CustodianA custodian is a financial institution, usually a bank, that holds securities and cash on behalf of clients, settles their trades and services the assets through corporate actions, income collection, tax relief and reporting. A global custodian covers many markets through its own branches or a network of sub-custodians.
• CSD (Central securities depository)A central securities depository (CSD) is an entity that operates a securities settlement system and provides the initial recording of securities in book-entry form (notary service) or central maintenance of securities accounts at the top tier. In the EU CSDs are authorised under the Central Securities Depositories Regulation (CSDR).
• Omnibus accountAn omnibus account is a securities account in which an intermediary holds the securities of several clients together, keeping the split by client in its own records. The Central Securities Depositories Regulation (CSDR) requires CSDs and their participants to offer clients a choice between omnibus client segregation and individual client segregation, with disclosure of costs and protection levels.
• Corporate actionA corporate action, or corporate event, is an action by an issuer that affects its securities and their holders, such as a dividend, a coupon payment, a stock split, a rights issue, a merger or a redemption. Events are mandatory, mandatory with choice, or voluntary, and must be processed along the whole custody chain.

Sources

• CPMI glossary, BIS (external site) accessed 31 Oct 2026
• Commission Delegated Regulation (EU) 2016/438 (UCITS depositaries), EUR-Lex (external site) accessed 31 Oct 2026

Updated 31 Oct 2026.