Commodity Futures Contracts: Contango, Backwardation, and Roll Cost
Live Markets Editorial Team
Updated:
Understand contango, backwardation, roll cost, storage, inventories, financing, margin, and why futures returns can diverge from spot prices.
A futures quote is a dated commitment
A futures contract names a commodity, contract size, delivery month, settlement method, and trading rules. Its price is not simply a promise that the holder can buy the physical good at that number today. Spot refers to a current physical-market transaction or reference, while a futures quote prices an obligation tied to a later date.
Contango describes a curve in which later-dated contracts trade above nearby ones; backwardation describes the reverse. Those labels compare contract prices at one time. They do not say whether the commodity itself is scarce, whether spot will rise, or how an investor's full position will perform.
Expiry makes the curve relevant to a continuing position
A trader who wants exposure beyond one contract month must close, settle, or replace the expiring position according to its terms. A rolling strategy may sell a nearby contract and buy a later one. The price difference between those contracts affects the transition, but it is only one component of the holding-period result.
As delivery approaches, futures and local cash prices can converge under contract and market conditions, yet the relationship is affected by location, grade, storage access, and settlement design. A benchmark curve may therefore differ from the physical price paid by a processor or producer in another region.
Before a roll, verify whether the strategy chooses the nearest liquid contract, a fixed calendar date, or a rule based on trading volume. The selected month can change both the spread traded and the liquidity available, especially near delivery. A spot benchmark alone hides that operational choice; a fund's methodology should state how it selects contracts.
Separate three return sources before comparing outcomes
For a collateralized futures position, distinguish the change in the futures price, the effect of replacing one contract with another, and the return earned or lost on collateral and financing. Funds can apply different roll calendars and collateral policies, so two products tracking the same commodity may not deliver identical results.
- Record the exact contract months and prices used at each roll date.
- Keep collateral income and management expenses outside the curve comparison.
- Check position limits, first-notice dates, delivery terms, and liquidity before using a contract.
Curve shape describes pricing, not a guaranteed roll result
A rising spot market can coincide with a loss on a particular futures strategy, and a downward-sloping curve does not promise a gain. The result depends on the path of contract prices, when the position is rolled, and the vehicle's implementation. Describing a curve as cheap or expensive also requires a chosen benchmark and date.
This article is educational information, not individualized investment, tax, legal, or accounting advice. Use contango and backwardation to describe the observed curve; calculate a strategy's actual return from its own contracts, roll dates, collateral, and costs.
Sources / References
- What Is Contango and Backwardation? — CME Group — Supports the article's definitions of contango, backwardation, futures curves, and the relationship between futures prices and expected delivery conditions.
- Deconstructing Futures Returns: The Role of Roll Yield — CME Group — Supports the article's explanation that rolled futures performance can differ from spot-price performance because of roll yield and curve shape.
- Futures Fundamentals — U.S. Commodity Futures Trading Commission — Supports the article's qualifications about contracts, margin, leverage, delivery, and the risks of assuming a quoted futures price is an executable return.