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Family offices

Global custodian

Safekeep and administer financial assets across markets through custody accounts, settlement processes and controlled sub-custodian networks.

Quick answer

A global custodian is a financial institution appointed to safekeep and administer cash and securities across markets. Services can include account maintenance, settlement, income collection, corporate actions, records, tax support and sub-custodian coordination under the custody agreement.

Use the worked example

Meaning and transaction use

An SEC-filed disclosure describes custodian responsibilities including safeguarding cash and securities, receipt and delivery, income collection, books, cash posting and trade recording. [S1]

An SEC-filed global custody agreement describes market settlement mechanics and separate cash and securities account entries pending actual receipt. [S2]

Proposed control method: reconcile positions and cash by account, market and legal entity and maintain a separate register for assets outside custody.

Worked example

Illustrative custody reconciliation only. Assume the family-office ledger shows 52.4 million, the custodian statement shows 52.1 million and documented unsettled purchases account for 0.25 million.

Scroll the table horizontally to view all columns.

MeasureCalculationResult
Gross difference52.4 - 52.10.30m
Unsettled purchase timingGiven0.25m
Unexplained difference0.30 - 0.250.05m
Unexplained percentage0.05 / 52.40.10%

The illustrative reconciliation leaves 0.05 million unexplained after the documented settlement timing item.

Proposed transaction review process

Define scope

Map entities, accounts, markets, assets and sub-custodians.

Set instructions

Approve authorised parties, cash, settlement and access controls.

Reconcile

Compare positions, cash, income, actions and unsettled trades.

Monitor service

Review breaks, incidents, market coverage, fees and controls.

Evidence checklist

Agreement

Services, liability, sub-custody and reporting terms.

Accounts

Cash and securities statements by entity and currency.

Transactions

Instructions, confirmations, settlement and corporate actions.

Controls

Authorisations, reconciliations, exceptions and service reports.

Decision framework

SituationProposed action
An asset is outside custodyRecord ownership, valuation and control separately.
A settlement failsTrack exposure, notification and resolution.
A market requires a sub-custodianReview agreement coverage and country risk.
A break remains unexplainedEscalate under the reconciliation policy.

Common errors to check

  • Treating custody as investment management.
  • Assuming every asset is held by the custodian.
  • Ignoring unsettled trades.
  • Failing to reconcile legal entities and currencies.

Reconcile the custody structure

Bring custody agreements, accounts and asset registers to a custody review. Reconcile coverage, controls and statement breaks.

Discuss the transaction

Primary references and editorial scope

  1. SEC filing: Custodian responsibilities
    Example safeguarding, settlement, income collection, books and cash-record responsibilities. Reference checked 17 September 2026.
  2. SEC filing: Global custody settlement mechanics
    Example transaction settlement and cash and securities account entries pending actual receipt. Reference checked 17 September 2026.
Editorial qualification

General operational education using public United States filings. Figures are hypothetical. The custody agreement, market rules and asset type determine actual services, protections and liability.

General business information. Obtain advice appropriate to the legal, tax, accounting and financing facts. No offer, lender commitment or transaction outcome is represented. All worked examples use expressly assumed figures. Editorial draft date: 17 September 2026.

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