A sub-account at the vault operator in which the counterparty is named in the vault register and bars are allocated by serial number, segregated from the seller’s own stock. It is a position in a record, not an account the counterparty opens: the storage contract sits between the seller and the vault operator, while the counterparty’s name enters the operator’s register against specific bars. What that produces is title to those bars rather than a claim for their value. Metal held this way stands outside the seller’s estate, is not available to the seller’s creditors, and leaves the sub-account only against a documented instruction.
What the three elements each carry
Named in the vault register. The operator’s own record identifies the counterparty against the metal. That record is what an auditor reads at confirmation and what an insolvency practitioner reads first. A holding described as allocated in a seller’s internal system but anonymous in the operator’s register carries the vocabulary without the substance, because the party holding the bars has no record of anyone but the seller.
Allocated by serial number. Each bar is identified by serial number, weight, fineness, producer and place of storage. Fungibility is what turns ownership into a claim: where the entitlement runs to an amount rather than to these bars, the holder is a creditor of whoever owes the amount, ranking with the rest. A serial number ends fungibility. It also fixes the granularity — whole bars only, since a fraction of a numbered bar cannot be allocated to anybody.
Segregated. The bars sit apart from the seller’s trading stock and from other participants’ metal. They are not worked in the seller’s business, not lent, not pledged, not counted as inventory. Segregation is the operational fact that keeps the legal description true; without it the register entry asserts something the vault floor contradicts.
How it differs from the other ways bullion is held for a counterparty
Five structures circulate under overlapping language. They differ in one respect that decides everything else: what the record actually names.
| Structure | What the record names | What the holder has | If the institution fails |
|---|---|---|---|
| Dedicated client sub-account | The counterparty, against listed serial numbers, in the vault operator’s register | Title to identified bars | Bars are the holder’s property and are identifiable as such |
| Allocated account at a bullion bank | The account holder, against a bar list maintained by the bank | Title to identified bars, subject to the bank’s substitution terms | Property, to the extent the bar list resolves to bars in the bank’s vault |
| Unallocated account or clearing balance | A participant, against a quantity | A contractual claim for delivery of that quantity | An unsecured claim ranking with general creditors |
| Pooled interest | A participant, against a fractional interest in co-owned bars | Beneficial co-ownership of a pool, not of a numbered bar | Determined by the pool’s legal framework, not by a serial number |
| Safe deposit box | The lessee of a box; contents undeclared | Possession of whatever is inside | Nothing recorded about the metal either way |
The pooled-interest line is newer than the others and is being built deliberately. In the Pooled Gold Interests framework published by the World Gold Council with Linklaters, participants co-own a pool of vaulted bars and issue digital fractional interests in it, positioned explicitly as a third settlement pillar alongside allocated and unallocated gold. It confers physical ownership; it does not confer ownership of a numbered bar. For a holder whose requirement is that a specific bar answers to a specific name, that difference is the whole point of the structure, in both directions.
How the sub-account comes into existence
- Instruction. The counterparty issues a gold purchase instruction naming format and quantity. The advance is bound to that instruction by an order reference; it is not credited anywhere as a standing sum.
- Compliance gating. AML and KYC records, source-of-funds review and sanctions screening are completed before allocation. The screening output is internal; the counterparty receives the verification status and its date.
- Fixation and confirmation. Golden Ark Reserve quotes on its own metal, the quote is fixed for a defined window, and the purchase is confirmed against that fixed figure.
- Allocation. Specific bars are identified against the instruction. The allocation record lists each bar by serial number, weight, fineness, producer and location. Until this step there are no bars, only an instruction and an advance.
- Placement. Brink’s, as storage operator, receives the bars into the dedicated client sub-account at Brink’s Hong Kong or Brink’s Singapore, and the counterparty is named in the vault register.
- Evidence. The commercial invoice — issued on the actual bars, not the nominal order — joins the allocation record and the placement confirmation in the counterparty’s document set.
- Standing state. From placement, storage is invoiced separately and the position persists until sale back to Golden Ark Reserve, transfer of title to another verified counterparty, or physical delivery.
What it costs and what sets the timing
Four cost components attach to a sub-account position, and they behave differently from one another.
Storage. Invoiced separately, against the placed metal. It is not netted from an advance and it does not run a position negative: unpaid storage is a receivable owed to the seller, and it does not convert into a lien over the bars or a right to sell them.
Insurance. Specie cover sits with the operator’s arrangements rather than with the holder individually. Capacity in this line is currently expanding in the Hong Kong market — the Insurance Authority began coordinating specie insurance provision for high-value precious metals in July 2026, alongside the city’s vaulting build-out.
Re-registration. A transfer of title to another verified counterparty carries a fixed administrative fee set by weight category. Golden Ark Reserve amends the register; settlement runs directly between the two parties or through licensed escrow, and no percentage of value is taken.
Exit. Buyback settles to the registered bank account. Delivery costs are carrier and route dependent. Neither is a fee on the sub-account itself.
Timing is governed by allocation and placement, not by market hours. Nothing in the position moves on a screen: bars change status when they are identified, moved and recorded, and every step of that has a document behind it. The whole-bar constraint sets the smallest movement: a partial disposal releases whole bars, so the format chosen at purchase fixes the granularity available at exit.
What the position produces on paper
The allocation record, the placement confirmation, the confirmation of title to the bars, the commercial invoice on the actual metal, the storage invoices, and the instruction log. Together these are what an auditor, a bank or a counterparty’s counsel actually examines; the sub-account is not visible any other way.
One distinction is worth holding separately, because the market’s newest infrastructure sits on the other side of it. The industry now maintains a digital provenance layer for bars: the Gold Bar Integrity database, launched by the LBMA in January 2025, had all Good Delivery refiners submitting data to it by the start of 2026, establishing origin and chain of custody bar by bar. That layer answers where a bar came from and where it has been. It does not answer whose it is. Title is answered by the vault operator’s register and the allocation record — the two documents this term describes — and by nothing else.
Where it fails
Naming drift. The register names one entity and the contract names another — a nominee, a former corporate name, a group parent. The bars are allocated, and the person claiming them is not the person the operator has recorded.
Substitution clauses. Terms permitting the operator or the seller to swap allocated bars for equivalent metal reintroduce fungibility by contract while the account keeps the allocated label. The holder ends up with an entitlement to equivalent bars, which is a claim.
“Allocated” used of a quantity. Where a statement reports a weight without serial numbers, no allocation has occurred whatever the account is called. The test is whether a serial list exists and resolves.
Arrears treated as security. A storage debt handled as a lien or cured by selling the holder’s metal converts a receivable into a disposal of property. Correctly handled it stays a receivable, and the bars are untouched.
Assuming the sub-account is a contract. The counterparty is named in the operator’s register but is not a party to the storage contract. Instructions run through the seller, and a holder expecting to direct the vault operator directly finds no relationship there to use.
Why the location no longer answers the question
Until recently, “held in an allocated account in Hong Kong” was treated as a complete answer. In 2026 it stopped being one, because the same jurisdiction now runs both structures at institutional scale.
On 7 July 2026 Hong Kong’s central clearing and settlement system for gold began trial operation under the Hong Kong Precious Metals Central Clearing Company, a wholly government-owned entity, with Bank of China (Hong Kong) as settlement institution and designated vault. Its design is explicit: gold balances in the system are held and settled on an unallocated basis, with commingled holding, because commingling is what makes settlement between participants efficient. Its central ledger records the balances of participating banks. Eligible metal for settlement is the approximately 400 fine troy ounce bar. Around it, the Airport Authority Hong Kong has expanded the airport precious metals depository to 200 tonnes and started a thousand-tonne facility, against a government target of over 2,000 tonnes of total capacity within three years.
Two consequences follow for anyone reading a storage proposal. First, the same jurisdiction now runs, at institutional scale and by design, a holding form that is the precise opposite of a dedicated client sub-account, built for participants who want a settlement position rather than a bar. Jurisdiction, vault quality and operator reputation no longer separate the two structures, because both now sit in the same buildings. Second, the eligibility rule draws a line that is easy to check: a kilobar holding cannot be a clearing balance in that system at all, so a counterparty holding kilobars is necessarily holding a physical register position, and the only question left is whose register and under what name.
That is the whole of it. A dedicated client sub-account is not a stronger version of an account — it is a different object, a line in someone else’s register that happens to have your name on it. Golden Ark Reserve contracts with Brink’s, coordinates the placement and keeps the allocation record; the counterparty is named in the vault register against numbered bars and owns them. The protection is not the contract, because the counterparty does not hold one with the operator. The protection is that a serial number resolves to a name, in a record kept by the party physically holding the metal, and that the seller’s own stock is recorded somewhere else entirely.
Placement, sub-account structure and the reporting that follows it are set out on Gold Storage, and the format most often held this way is covered on 1kg Gold Bars.