COMEX Depositories Explained: Where Gold and Silver Are Stored

The Vault Behind a Futures Contract

A gold futures contract can change hands thousands of times without anyone moving a bar. Yet when a contract proceeds to physical delivery, the exchange needs more than a promise that metal exists somewhere. It needs an approved location, identifiable bullion, and a record that transfers the right to that bullion between clearing members.

That infrastructure is easy to overlook when attention turns to COMEX warehouse inventory. A September 2026 event involving an apparent 125-tonne decline in reported gold stocks illustrated how dramatically warehouse figures can be misread. The underlying issue involved a change in contract reporting, not evidence that the entire amount had suddenly been removed from vaults.

Understanding the depository system explains why those distinctions matter. COMEX-approved warehouses connect standardized futures contracts to actual metal, but the exchange's inventory reports describe a regulated delivery framework, not every ounce of gold or silver available for purchase.

What Makes a Depository COMEX-Approved?

COMEX, part of CME Group's exchange network, does not operate one enormous vault containing all futures-market bullion. It approves outside storage facilities that satisfy its rules for custody, records, handling, and delivery. Depositories secure metal, track individual holdings, and report inventory to the exchange.

The approved depository network includes established names such as Brink's, HSBC, JPMorgan Chase, Delaware Depository, and International Depository Services of Delaware. Its history also shows how the exchange has expanded its storage infrastructure over time. Brink's received approval for a New York Fifth Avenue vault in September 2010, Delaware Depository received a gold depository approval in March 2015, and International Depository Services of Delaware was approved for gold, silver, platinum, and palladium that December.

More recently, COMEX approved StoneX Precious Metals in Hempstead, New York, in April 2025, followed by Malca-Amit Armored's Wilmington, Delaware, facility in May 2026. Texas Precious Metals announced approval of its Hempstead, New York, depository in August 2026, adding another institutional storage option to the exchange network. These approvals demonstrate that COMEX delivery infrastructure is not confined to a handful of traditional Manhattan vaults. Each approved facility must meet the applicable exchange requirements, and authorization is specific to its location and eligible metals.

Depositories must also operate within the exchange's chain-of-integrity requirements. Accepted metal has to meet contract specifications, including approved brands, bar characteristics, and fineness. Documentation and controlled transportation help establish that the bullion entering the delivery system is the metal described in its records.

A warehouse's commercial reputation alone is insufficient. An excellent private vault may securely hold investment bullion without being authorized to support COMEX delivery. Conversely, approval does not mean every bar inside a licensed facility is available to settle a futures contract. Ownership and registration determine what the exchange can recognize for delivery.

How Bullion Becomes Deliverable

A retail buyer can purchase a one-ounce gold coin or a small silver bar, but those products are not the standard units of COMEX futures delivery. The conventional gold futures contract represents 100 troy ounces, and the standard silver contract represents 5,000 troy ounces. Exchange delivery involves qualifying wholesale bars in prescribed quantities.

The process starts before the delivery month. Bullion must satisfy applicable specifications and be accepted into an approved depository. A gold bar's serial number, refiner, weight, and fineness connect the physical object to its documentation. CME's explanation of precious-metals delivery describes how approved brands, assaying requirements, and authorized carriers support that chain of custody.

The crucial next step is warranting. At the owner's instruction through the relevant clearing arrangements, a depository issues an electronic warrant covering identified metal. The warrant functions as a document of title within the exchange system. Its transfer allows a futures delivery obligation to be completed without requiring the bars to travel between warehouses.

Consider a firm that holds qualifying gold in an approved vault and wants to make delivery against a futures position. It cannot simply point to its storage statement. The bullion must be properly warranted and processed through the exchange's delivery procedures. The receiving party obtains the relevant warrant and can keep the metal in storage, arrange another transaction, or request physical removal under applicable rules.

Futures delivery should not be imagined as trucks lining up outside a vault each time a contract expires. Title can change hands while the same bars remain on the same shelves. Actual loading out is a separate operational decision, with its own costs and arrangements.

What Warehouse Reports Reveal—and Conceal

Daily depository reports distinguish metal that meets exchange specifications but is not warranted from metal for which a warrant has been issued. These categories are called eligible and registered. The distinction matters because registered metal has entered the exchange's warranting system, although ownership and applicable restrictions still matter.

A change in the registered total does not necessarily signal an incoming or outgoing shipment. Owners can alter warrant status while bullion stays in place. Likewise, eligible metal cannot be treated as an unconditional pool available to futures sellers: its owner may have no intention of registering it. CME's gold inventory reporting documentation explains the reporting of registered and eligible stocks, receipts, and withdrawals.

The September 2026 gold-stock episode showed another source of confusion. The discontinuation of a particular contract changed the relevant reporting framework, producing a headline decline that could easily be mistaken for a physical exodus. The earlier analysis of whether 125 tonnes of gold actually left COMEX examined that specific change. A warehouse statistic needs to be understood before it can support a conclusion about physical supply.

Another mistake is equating depository inventory with the entire supply of precious metals. Gold and silver also sit in private vaults, industrial inventories, jewelry, central-bank holdings, and other storage arrangements outside COMEX reporting. Warehouse data can reveal developments in the exchange's delivery network, but cannot independently measure all available bullion or establish an imminent shortage.

The Difference Between Futures Delivery and Owning Bullion

For a futures participant, a warrant connects a standardized contract to specified bars held in an approved facility. That differs from a retail investor buying a physical product outright and choosing home storage or a private vault. Both involve ownership questions, but their documentation, access procedures, and transaction sizes differ substantially.

Retail gold bars are available in many sizes, including one ounce and one kilogram, and their premiums reflect fabrication, distribution, and dealer conditions. COMEX delivery rules are designed around wholesale contract settlement. A buyer comparing live precious-metals prices with retail quotations should not assume that an exchange warehouse figure directly determines the availability of a particular coin.

For most individuals, a futures position will never become a warehouse warrant. Positions are commonly closed or rolled before delivery, and access to the physical-delivery process depends on brokerage and clearing arrangements. An investor interested in receiving metal should establish those procedures well before the delivery period, not assume that holding a contract automatically results in bars arriving at an address.

The Questions to Ask When COMEX Stocks Move

A striking inventory headline deserves several checks. Was there an actual receipt or withdrawal at a named depository? Did metal change warrant status without moving? Was a contract specification, approved brand, or reporting category altered? Those events can create very different interpretations of the same numerical change.

The warehouse system is subject to oversight and recordkeeping, making official reports more informative than unsupported claims about hidden shortages. Still, published figures are snapshots of a particular exchange infrastructure. They do not reveal every owner's intentions, every private bullion transaction, or the future direction of prices.

Approved vaults make physical futures delivery possible through documented metal and transferable warrants. The next time COMEX inventory moves sharply, the useful question is not simply how many ounces disappeared from a report. It is whether bullion actually moved, its delivery status changed, or the rules governing the reported total were revised.