# Custody and Beneficial Ownership

> Understand omnibus custody, per-sub-account beneficial ownership, settlement, and custody reconciliation in the MyStocks operating model.

MyStocks maintains the per-sub-account beneficial-ownership ledger. Regulated brokers, custodians, and the relevant CSD hold and settle securities according to each market’s rules.

## What the API represents

- A filled order is an execution event; it is not automatically settled custody.
- Unsettled sell proceeds remain unavailable for withdrawal until the relevant settlement condition is met.
- Portfolio and holdings endpoints show the per-sub-account ledger.
- The custody section of `GET /report/reconciliation` compares pooled custody positions with the sum of attributed sub-account holdings.
- Corporate actions and dividends are distributed through account records and signed events.

## Daily custody control

1. Pull securities and `custody_positions` sections from the reconciliation pack.
2. Compare total units by symbol and market with the custodian/CSD file.
3. Import the dated broker/CSD cash and position statement through the authorized MyStocks operations control.
4. Require `BALANCED` external reconciliation evidence within 36 hours for GA. Missing external files are `INCOMPLETE`; any unit or cash difference is `EXCEPTIONS` and must not be waived silently.
3. Break differences down by sub-account, pending order, settlement date, and corporate action.
4. Record the exception and do not silently overwrite the beneficial-ownership ledger.
5. Close the exception only after a corrected source record or operations confirmation.

MyStocks is a technology and orchestration platform, not a broker-dealer. The executing broker and custodian for a market are disclosed through the applicable contractual and operational process. See [Architecture & Custody](/partners/docs/architecture) and [Going Live](/partners/docs/going-live).