Commodity Trading Glossary: 60 Key Terms

Commodity trading has a working vocabulary that condenses complex commercial, logistical and financial concepts into short terms. This glossary defines 60 of the most-used words and phrases, grouped by theme so you can scan straight to what you need. Each definition favors practical usage over textbook abstraction, because that is how these terms appear on term sheets, charter parties and confirmations.

For the broader mechanics behind these terms, see How Commodity Trading Works: A Complete Guide.

What are the main deal structures and trading styles in commodity trading?#

Commodity trading deal structures and trading styles are the basic shapes a physical transaction can take, including back-to-back purchases, arbitrage, paper trading, washouts, book transfers, exchanges for physical, and cargo chains. These structures exist mainly to manage spreads and transfer risk between parties, not to bet on outright price direction. The terms below describe how traders construct and unwind deals.

Back-to-back, arbitrage and flat price#

• Back-to-back: A purchase matched immediately with an offsetting sale, locking in a margin and passing flat-price risk to the counterparty. The trader earns a fee for intermediation rather than a directional view.
• Arbitrage: Buying in one location or time and selling in another to capture a price difference that exceeds freight, financing and quality adjustments.
• Time charter equivalent (TCE): The daily revenue of a voyage expressed as if the ship were on time charter, allowing comparison across routes and cargoes.
• Flat price: The outright dollar-per-barrel or dollar-per-ton level, as distinct from spreads, differentials or structure. Most physical traders avoid flat-price exposure.

Paper trading, washouts and chains#

• Paper trading: Trading derivatives (futures, swaps, options) without touching physical cargo. See Physical vs Paper Trading: Key Differences for the full comparison.
• Washout: Closing a physical contract before delivery by cash-settling against a market reference, usually when one party defaults or both agree to cancel.
• Book transfer: Settling a physical obligation by transferring title within a trader’s own book or with a partner, avoiding physical movement.
• Exchange for physical (EFP): Swapping a futures position against a physical cargo, converting paper exposure into physical and vice versa.
• Chain: A sequence of consecutive buyers and sellers of the same cargo; default by one link can ripple through the entire chain.

How are commodity prices built from benchmarks and differentials?#

Commodity prices in physical deals are built from a benchmark reference price, such as Brent or WTI, plus adjustments called differentials that reflect quality, location, freight and timing. Rather than a single flat number, deals use floating prices averaged over a window, fixed prices, month codes like M+1, and structure measures such as contango and backwardation. The terms below define each component.

Benchmarks, differentials and price formulas#

• Benchmark: The reference price for a deal, such as Brent or WTI for crude. Our Brent vs WTI: Crude Oil Benchmarks Compared explains how the two differ.
• Differential (diff): The premium or discount to a benchmark that reflects quality, location, freight or timing. “Brent plus $1.40” means the diff is +$1.40.
• M+1, M+2 (month codes): Delivery timing expressed as benchmark month plus a lag; a cargo priced “M+1 average” settles on the mean of next month’s quotes.
• Floating price: A price determined by averaging benchmark quotes over a defined window, common in crude and products.
• Fixed price: A price agreed at deal inception, transferring flat-price risk to whoever holds it.
• Price reporting agency (PRA): A firm publishing price assessments used as deal references. See What Price Reporting Agencies Actually Do.

Forward curve, contango and backwardation#

• Contango: Forward prices above spot, typically reflecting storage, financing and insurance costs. Traders buy spot, store, and sell forward if the spread covers carrying costs.
• Backwardation: Forward prices below spot, signaling scarcity; holding inventory costs money in forgone higher spot prices.
• Forward curve: The set of prices for delivery at successive future dates, visible in futures or swap quotes.

Contango vs backwardation at a glance#

Netback, product worth and quality adjustments#

• Netback: The value of crude at the production point, calculated as delivered sale price minus freight, insurance and other costs. Used to compare offers on an equivalent basis.
• Gross product worth (GPW): The value of refined products obtainable from a barrel of crude, used to judge refinery economics and crude attractiveness.
• Crack spread: The margin between crude cost and refined product prices, tradable as a paper instrument.
• Quality premium/discount: The price adjustment for API gravity, sulfur content or other specs relative to the benchmark grade.

Which shipping and logistics terms govern physical commodity delivery?#

Shipping and logistics terms in commodity trading govern what happens between the deal and the delivery, covering the vessel’s arrival window (laycan), loading and discharging time allowances (laytime), penalty and reward payments (demurrage and despatch), documents of title (bill of lading), and the charter party contract. Execution quality often determines whether a profitable deal actually makes money.

Laycan, laytime, demurrage and despatch#

• Laycan: The contractual layday/cancelling window during which the vessel must arrive and be ready to load or discharge. Arriving outside it lets the seller or buyer cancel.
• Laytime: The agreed number of hours or days allowed for loading or discharging before penalty charges begin.
• Demurrage: Compensation paid to the shipowner when laytime is exceeded, at a daily rate fixed in the charter party.
• Despatch: A reward paid when loading or discharging finishes ahead of laytime, usually half the demurrage rate.
• NOR (notice of readiness): The master’s formal notification that the vessel has arrived and is ready to work, which starts the laytime clock (subject to charter terms).

Documents, charters and cargo scheduling#

• Bill of lading (B/L): The document of title issued on loading; cargo changes hands against it, and trade finance banks rely on it.
• Charter party: The contract between shipowner and charterer covering hire terms, laytime, demurrage and responsibilities.
• Bareboat, time and voyage charter: Hire arrangements giving the charterer the hull only, the ship plus crew, or a specific voyage respectively.
• Deadfreight: Compensation for cargo space booked but not used.
• Stem: The nomination or scheduling of a cargo or product volume, as in “the June stem.”
• Bill of lading date: The reference date from which pricing windows, payment terms and documentary deadlines are usually counted.

Delivery terms, force majeure and demurrage exposure#

• Force majeure: A contractual excuse from performance for events outside a party’s control, defined narrowly and invoked carefully.
• Incoterms (FOB, CIF, CFR, DAP): Standard delivery terms allocating cost, freight and risk between buyer and seller. FOB transfers risk at the ship’s rail; CIF and CFR leave freight arrangement with the seller.
• Demurrage exposure: The risk that port congestion turns a profitable trade into a loss; experienced traders model laytime assumptions before fixing vessels.

How is commodity trading financed and paid for?#

Commodity trading is financed through instruments that bridge the gap between cargo movement and payment, including letters of credit, documentary collections, open account terms, cash against documents, inventory financing, repos, prepayment finance, netting and margin. Because cargo moves before money does, trading is fundamentally a credit business. These terms are covered in depth in Letters of Credit in Commodity Trade Finance.

Payment instruments#

• Letter of credit (L/C): A bank’s undertaking to pay the seller against compliant documents, the workhorse of cross-border cargo payment.
• Documentary collection: A cheaper, riskier alternative where banks handle documents but give no payment guarantee.
• Open account: Payment after delivery on agreed credit terms, used between trusted counterparties and internally within groups.
• CAD (cash against documents): Documents released to the buyer only against payment.

Borrowing, lending and collateralized funding#

• Borrowing and lending: In oil markets, the practice of lending or borrowing physical parcels or paper positions to manage delivery obligations and curve exposure.
• Commodity borrowing cost: The implied cost of obtaining physical material now and returning it later, visible in the curve’s structure.
• Inventory financing: Borrowing against warehouse receipts or B/Ls, with advances typically a fraction of assessed value.
• Repo (repurchase agreement): Selling cargo or stock with an agreement to repurchase, effectively collateralized short-term funding.
• Prepayment finance: A buyer advancing funds to a producer against future deliveries, common in emerging-market trade.

Confirmations, netting and margin#

• Confirmation: The exchanged document fixing a deal’s economics; discrepancies between confirmations are a classic source of disputes.
• Netting: Offsetting mutual obligations so only the net amount is settled, reducing credit exposure and payment traffic.
• Margin and variation margin: Cash collateral posted against derivative positions, adjusted daily as prices move.

What risk, credit and compliance terms do commodity traders use?#

Risk, credit and compliance terms in commodity trading describe how firms measure and control exposure, including counterparty risk, credit limits, mark-to-market valuation, value at risk, hedging, basis risk, clearing, position limits, and the EU regulations REMIT, MiFID II and EMIR. Trading houses are risk warehouses with a thin capital base, so this vocabulary is used constantly.

Counterparty and credit terms#

• Counterparty risk: The risk the other side fails to perform, whether on cargo, payment or a derivative.
• Credit limit: The maximum exposure allowed to one counterparty, typically split by tenor and product.
• Drawdown: In credit lines, the amount actually borrowed at a point in time.

Valuation and hedging terms#

• Mark-to-market (MTM): Valuing open positions at current prices to measure exposure and P&L daily.
• VaR (value at risk): A statistical estimate of potential loss over a horizon at a given confidence level.
• Hedging: Offsetting physical exposure with paper instruments. See Energy Hedging Strategies Explained Simply for the main approaches.
• Basis risk: The residual risk that the hedge instrument does not move exactly with the physical exposure.

Derivatives market and regulatory terms#

• OTC (over the counter): Bilateral derivative trades negotiated directly, as opposed to exchange-traded.
• Clearing: Submitting OTC trades to a central counterparty that guarantees performance and nets positions.
• REMIT: The EU regulation prohibiting market abuse in wholesale energy markets; see REMIT Explained: EU Energy Market Abuse Rules.
• Position limit: A cap on the size of a derivatives position, imposed by exchanges or regulators.
• Wash trading: Trading that creates misleading market activity without genuine economic purpose, prohibited under abuse rules.

Who are the main participants in commodity markets?#

The main participants in commodity markets are trading houses, integrated oil majors, national oil companies, brokers, pipeline operators and terminal storage operators, each playing a distinct role in intermediating, producing, transporting or financing physical flows. Knowing who does what clarifies why deals are structured the way they are.

Trading houses, majors and NOCs#

• Trading house: A firm that intermediates physical flows and finances cargoes, often with modest capital and large turnover. Geneva hosts many of the largest, a story told in Why Geneva Became a Global Commodity Trading Hub.
• Major: A large integrated oil company with production, refining and marketing arms.
• National oil company (NOC): A state-owned producer, frequently the counterparty on term crude contracts.
• Broker: An intermediary matching buyers and sellers for a commission without taking positions itself.

Contracts, tenders and infrastructure#

• Term contract: A framework agreement covering repeated deliveries over months or years, with volumes and pricing formulas set at the outset.
• Spot cargo: A one-off physical purchase for prompt or near delivery.
• Tender: A formal procurement or sales process, common for NOC crude sales and utility purchases, with defined bid procedures.
• Nomination: A party’s declaration of the volume it will take or deliver under a flexible contract, as in gas and LNG.
• Pipeline operator / TSO: The entity running transport infrastructure and allocating capacity.
• Warehouse receipt: A document of title for stored metal or soft commodities, financeable and transferable.

Which terms are specific to energy and carbon markets?#

Energy and carbon markets add a layer of vocabulary covering LNG cargo windows, destination flexibility, hub pricing at points such as TTF, transport capacity, spark spreads, EU carbon allowances, renewable guarantees of origin, and the EU regulatory regimes MiFID II and EMIR. Environmental commodities now trade alongside power and gas.

LNG and gas terms#

• Cargo window: The agreed delivery period for an LNG or oil parcel, often a range of days rather than a fixed date.
• Destination flexibility: The right to redirect a cargo en route, valuable for arbitrage and central to LNG trading. See How LNG Trading Works: Cargoes, Routes, Arbitrage.
• Hub pricing: Pricing gas at a liquid trading point such as TTF rather than against oil. Our How the TTF Gas Price Works covers the mechanics.
• Capacity: Reserved transport or storage rights on a pipeline, terminal or grid.

Power, carbon and regulatory terms#

• EUA (EU allowance): A carbon permit under the EU ETS, now traded alongside power and gas. See How the EU ETS Carbon Market Works.
• Spark spread: The margin between power revenue and gas fuel cost for a generating plant.
• Clean spark spread: The spark spread minus the carbon cost of the fuel burned.
• Renewable guarantee of origin (GO): A certificate proving power came from renewable generation, tradable separately from the electricity.
• MiFID II / EMIR: The EU regimes governing trading conduct and derivative reporting respectively; see EMIR vs MiFID II: What Energy Traders Must Know.

How should you use this commodity trading glossary?#

Students and analysts get the most from trading vocabulary by seeing where each term sits in a deal’s life cycle rather than learning definitions alphabetically. Reading the terms in deal sequence, from pricing through shipping to settlement, mirrors how a physical transaction actually unfolds. A practical reading order:

1. Pre-deal: benchmark, differential, floating vs fixed price, credit limit, counterparty risk.
2. Execution: charter party, laycan, Incoterm, confirmation.
3. Loading: NOR, laytime, bill of lading, demurrage.
4. Financing: L/C, inventory financing, netting, margin.
5. Post-deal: washout, MTM, hedging, basis risk.

If you are weighing a career in the field, our Commodity Trading Careers: Skills and Entry Checklist maps these terms to the roles that use them daily.

Key takeaways#

• Most physical trading risk is spread risk (diffs, structure, freight), not flat price; learn contango, backwardation and netback first.
• Logistics terms like laycan, laytime and demurrage decide whether a good deal makes money after execution.
• Trade finance vocabulary (L/C, borrowing and lending, repo, prepayment) explains how thinly capitalized firms move billion-dollar flows.
• Regulatory terms (REMIT, MiFID II, EMIR) now sit alongside commercial ones in every European energy trading role.
• Vocabulary is best learned in deal sequence, from pricing through shipping to settlement, rather than alphabetically.