What a commodity exchange is and how it works
A commodity exchange is an organised venue where sellers and buyers conclude trades on a standardised commodity under uniform rules, and the venue matches their orders and records the result.
The exchange does not buy or sell the commodity itself and is not a party to the contract: it provides the rules, the matching tool and the security of performance. Settlement and delivery take place between the parties.
Below — what kinds of exchanges exist, what actually gets traded, how the mechanics work and how an exchange differs from a marketplace.
Types of exchanges: what commodity exchanges are like
Exchanges are distinguished by the subject of trading, by urgency, by the method of trading and by scale. No one classification cancels another: the same venue can be universal, electronic and national at the same time.
By the subject of trading, venues are divided into universal and specialised. A universal one runs several commodity groups, a specialised one runs a single group: metals, petroleum products, grain, timber, precious metals. Specialisation simplifies standardisation, because all participants speak the same language of specifications.
By urgency, a distinction is made between the spot and the derivatives market. On the spot market real commodities are traded with delivery within a specific period. On the derivatives market the subject becomes the price: futures and options allow a future price to be fixed without buying a batch of metal now.
| Feature | Options | What it means for the buyer |
|---|---|---|
| Subject | universal, specialised | breadth of choice versus depth in one group |
| Urgency | spot, derivatives | actual delivery versus fixing the price |
| Trading method | electronic, open outcry | speed of access versus a historical form |
| Scale | international, national, regional | the circle of counterparties and admission rules |
| Sections | by commodity group | separate rules and specifications |
Financial exchanges stand apart — shares, bonds, currency. Commodity and financial venues are not mixed: they have a different subject, different infrastructure and a different logic of performance.
What is traded
An exchange commodity must be standardisable, measurable, mass-produced and transportable. If a batch cannot be described by a set of parameters, the exchange is not suitable for it — such trades remain over-the-counter.
Steel products meet these requirements. A position is described by grade, size, surface finish, standard and HS code, which means two sellers can offer interchangeable goods.
| Commodity group | What is standardised | What goes into the specification |
|---|---|---|
| Steel products | grade, size, surface | grade, size, surface, standard |
| Pipes | diameter, wall thickness, production method | size, grade, type of seam, length |
| Petroleum products | fuel grade | grade, seasonality, quality parameters |
| Grain | crop and class | crop, class, moisture, parameters |
| Timber | species and grade | species, grade, dimensions, moisture |
| Fertilisers | type and concentration | grade, content of the active substance |
| Precious metals | fineness and mass | metal, fineness, mass, form |
Universal venues usually run several sections, and each has its own rules: different lots, different delivery bases, different shipment periods.
How trading is organised
The mechanics are similar everywhere: a participant obtains admission, places an order, the order enters the common order book, when the parameters match the trade is recorded, then the parties perform their obligations under the security.
| Stage | What happens | Who is responsible |
|---|---|---|
| Admission | registration and access to trading | the venue |
| Order | recording the commodity, volume, price, terms | the participant |
| Matching | comparing counter-orders | the venue |
| Collateral | paying the deposit on the trade | both parties |
| Confirmation | the parties agreeing to the recorded terms | both parties |
| Documents | exchanging and accepting the set | both parties |
| Settlement and delivery | paying for the commodity and shipment | both parties |
The key detail is the binding nature of an order. On an exchange an order is not an "interest" or an "advertisement" but an obligation: if the parameters match, the trade takes place. That is precisely why security and deadlines are tied to the order.
The second detail is anonymity or its absence. On some venues the counterparty is disclosed only after the trade, on others it is visible in advance. On GCX the parties see each other as "buyer" and "seller" both before and after the trade, and bank details are not stored on the venue.
The third detail is the delivery basis. Incoterms terms, the mode of transport and the delivery point describe where and on whose responsibility the commodity passes to the buyer. On an exchange these terms are set in the order and carried over into the trade without renegotiation.
How an exchange differs from a marketplace
At first glance both an exchange and a marketplace connect a seller with a buyer. The difference is in what exactly they connect: anonymous orders under uniform rules, or specific sellers with their offers.
| Feature | Commodity exchange | Marketplace |
|---|---|---|
| What the buyer sees | orders and quotations | product cards from sellers |
| How the price is formed | from counter-orders | the seller sets it themselves |
| Counterparty | anonymous before and after the trade | a specific seller with a rating |
| Commodity | standardised | any |
| Rules | uniform and binding for all | the venue's rules for sellers |
| Collateral | deposit or clearing | usually absent |
| Deadlines | strict, tied to the trade | discussed by the parties |
| Role of the venue | matches and records, not a party to the contract | an intermediary in payment and delivery |
A marketplace is convenient for a one-off purchase: chose the goods, paid, received them. An exchange is needed when price, volume and predictable performance matter, rather than a specific seller. On an exchange the buyer compares not shops but price levels and delivery terms.
Who takes part in trading
The composition of the participants determines liquidity. The wider the circle, the denser the order book and the narrower the spread.
- Producers sell their own volume and load their capacity.
- Traders hold a position and earn on the price difference and logistics.
- Consumers cover their need for raw materials and components.
- Brokers and agents act on behalf of clients.
- The infrastructure — warehouses, carriers, laboratories — ensures performance.
To a consumer the exchange gives access to supply without ringing round suppliers, to a producer access to demand without its own sales department for every line.
An exchange commodity: why metal fits
Stainless rolled steel is described by a finite set of parameters: grade, size, surface finish, standard. A pipe 57×3 AISI 304 with a 2B surface from two sellers is the same commodity if the standard and the tolerances match.
Standards and marking make the specification unambiguous. ГОСТ and international systems describe the composition and the dimensions, and the HS code links the position to foreign trade classification. This makes it possible to compare orders without inspecting the metal.
The flip side is bottlenecks. Non-standard tolerances, non-standard lengths, special surfaces and small batches fit poorly into an exchange specification. Such positions more often go into direct trades.
Collateral and discipline of performance
An exchange trade rests on security. On GCX both parties pay a deposit at matching. It is held rather than spent, and is returned in full to both parties once the round of documents has been accepted.
Discipline is reinforced by deadlines. 24 hours are allowed for confirming the trade, 5 days for exchanging and accepting documents. The first countdown runs from the moment of matching, not from confirmation. Missing a deadline means losing the deposit for the party whose turn it was; the other gets their deposit back in full.
You can exit the trade at any moment while the deposit is held: your own deposit is then lost, and the counterparty's deposit is returned to them. Before both parties have confirmed, a cancellation by agreement can be proposed — then the deposits are returned to both.
It is important not to confuse security with escrow. The exchange does not hold money for the commodity, does not check the counterparty, does not read or assess documents, and does not handle delivery or insurance. The deposit protects against a breakdown, but does not replace settlement.
Quotations, the spread and the basis
A quotation is a price for a standard position recorded by the market. The quotation list collects the best prices and serves as a reference point for new orders.
The spread is the difference between the best bid price and the best offer price. It shows liquidity: a narrow spread means a dense market, a wide one a thin market. In the physical metal market the spread is wider than in the financial one, because behind the order there is a real batch with a shipment week.
The delivery basis determines what exactly is included in the price. The same pipe at the seller's warehouse and at the buyer's warehouse costs differently, so the Incoterms basis and the mode of transport are recorded in the order. Without that, comparing prices is pointless.
How this works on GCX
GCX is a commodity exchange for physical metal. It matches binding orders and records the trade, while settlement and delivery take place between the parties. The catalogue has 68 positions: round pipe, hollow section pipe, sheet, round bar and angle from grades AISI 201, 304, 316L and 430.
An order lives in one market: one commodity, one currency, one unit of quantity, and the delivery points must overlap. An order does not match with itself or with an order from a colleague in the same company, and an unmatched order expires on the Monday of its shipment week.
Trading is conducted in dollars, yuan and roubles. The fee is 0.50% of the trade amount from each side, no less than $0 and no more than $500. The fee is charged in USD, and a trade in another currency is recalculated at the Bank of Russia official fixing on the date of the trade, and the rate is recorded together with the trade. Registration is free; a balance of $10 is needed to place an order.
Common mistakes
- Confusing an exchange with a marketplace. On an exchange you buy not from a specific seller but from the market under uniform rules.
- Expecting instant shipment. The exchange records the trade but does not handle logistics: the parties manage delivery and settlement themselves.
- Not specifying the basis and the shipment week. Without these parameters the order will not match with a suitable counter-order.
- Regarding the exchange as a party to the contract. The exchange does not buy or sell the commodity and does not hold money for it.
- Counting on a counterparty check. The exchange does not carry one out: the symmetrical deposit closes the risk of a breakdown, but not the partner's reputation.
- Leaving confirmation for later. 24 hours and 5 days are counted from matching, not from a convenient moment.
Frequently asked questions
What is a commodity exchange in simple words?
It is a venue where sellers and buyers place orders for a standardised commodity under uniform rules. The venue matches counter-orders and records the trade, while settlement and delivery take place between the parties. The exchange itself does not sell the commodity.
How does a commodity exchange differ from a marketplace?
An exchange matches anonymous orders and forms the price from supply and demand, while a marketplace shows cards of specific sellers with their prices. On an exchange the commodity is standardised, the rules are uniform, and performance is backed by security.
What types of exchanges are there?
By subject — universal and specialised, by urgency — spot and derivatives, by trading method — electronic and open outcry, by scale — international, national and regional. Inside a venue there are usually sections by commodity group.
What can you buy on a commodity exchange?
Steel products, pipes, petroleum products, grain, fertilisers, timber, building materials, precious metals. The commodity must be standardisable and measurable. Unique positions for a specific project remain in over-the-counter trades.
Who can take part in exchange trading?
Producers, traders, consumers and brokers acting on behalf of clients. A participant registers and obtains access to trading. On GCX registration is free, and a balance of $10 is needed to place an order.
Does the exchange sell the commodity itself?
No. The exchange matches orders and records the trade, but is not a party to the purchase and sale contract. It does not hold money for the commodity, does not provide escrow, does not check the counterparty and does not handle delivery.
What is an exchange quotation?
A price for a standard position recorded by the market. The quotation list collects the best prices and serves as a reference point for new orders. In the physical market a quotation is always tied to the delivery basis and the term.
Why is there a deposit on an exchange?
The deposit makes an order binding in practice. At matching both parties pay it, and it is returned in full after the documents are accepted. The party that missed its turn loses the deposit — that is the price of a breakdown.
Start trading on the exchange
The exchange is useful when price, volume and predictable performance are needed. Understand the mechanics before your first order: deadlines and security are counted from the moment of matching.