Securities Depositories, CSDs, and Dematerialization

Securities depository and dematerialization terms describe market-level book-entry systems, electronic forms of holding, and the intermediaries that connect investors to those systems. This branch separates a central securities depository from custody, clearing, brokerage, transfer-agent, and investor-account functions.

Use these pages when a security record depends on whether ownership is represented by book-entry records, a central securities depository, a depository participant, or dematerialized shares.

What This Branch Covers

Decision Lens

Start with the securities-holding record. If the issue is who keeps the master book-entry record, which participant serves the investor, or whether paper certificates have been replaced, this branch is the right level.

Evaluation Checklist

• Identify the depository, participant, account type, security, and jurisdiction.
• Separate depository recordkeeping from custody services and transfer-agent records.
• Check whether the security is certificated, immobilized, or dematerialized.
• Confirm whether the page is being used for settlement, ownership, pledge, or corporate-action context.
• Use current market rules and qualified advice for legal-title, custody, tax, and investor-rights questions.

Common Mistakes

• Treating a depository as the investor’s broker.
• Confusing dematerialization with a change in economic ownership.
• Ignoring the depository participant’s role in investor access.
• Assuming every country uses the same CSD and settlement model.
• Treating depository, depositary bank, custodian, and depository participant as interchangeable roles.

In this section

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