A futures contract approaching expiration is often expected to move toward the cash price of its underlying asset. That relationship is strongest when the contract and spot quotation refer to comparable goods, locations, and settlement dates. Apparent convergence can be misleading when those details differ.
For futures trading, the narrowing gap between the two prices is not a promise that a CFD linked to a futures contract will follow the visible spot chart. Five forces determine how that gap closes and what exposure remains along the way.
Financing and Carry Costs Shrink as Delivery Approaches
A futures premium may reflect the cost of financing an asset until delivery, alongside insurance and other carrying expenses. As the remaining holding period contracts, the portion attributable to time normally diminishes. Interest-rate changes can still alter the premium before expiry, particularly for financial futures.
An investor comparing an equity-index futures CFD with a cash-index CFD should identify the contract month and the provider’s financing treatment. A shrinking futures premium can lower the futures-linked quote even if the cash index barely moves; a chart of the index alone would miss that effect.
Deliverable Grades and Locations Determine Which Spot Price Matters
Physical delivery contracts specify acceptable grades, delivery points, and sometimes allowances for quality differences. A quoted spot price from another region or for a superior grade is not necessarily the cash benchmark toward which the expiring contract should converge.
The distinction becomes acute when transport capacity is scarce. Grain available near an exchange-approved warehouse may command a different price from grain hundreds of kilometers away. Compare the contract’s delivery specifications with the location and quality behind the spot quotation before treating the observed basis as an arbitrage opportunity.
Delivery Bottlenecks Can Preserve an Unexpected Basis
Convergence relies partly on participants being able to deliver or receive the underlying asset. Warehouse queues, insufficient certified stocks, and costly logistics can make that mechanism difficult to use, even close to expiry.
Imagine a hypothetical aluminum contract covering 25 metric tons, trading at $2,480 per ton five trading days before delivery, while eligible warehouse metal is quoted at $2,450. The $30 premium suggests $750 per contract. A trader sells a futures-linked CFD expecting the premium to disappear. Instead, restricted warehouse availability pushes the contract to $2,505 while the quoted cash price stays at $2,450. On a CFD with a 25-ton multiplier, the short loses $625 from the $25 futures increase, excluding charges. The basis widened to $55 rather than closing. Check deliverable inventories and the CFD’s exact reference contract, not merely the headline cash price.
Settlement Method Changes the Final Convergence Mechanism
Cash-settled futures finish against a prescribed index or assessment rather than through physical delivery. Their final value depends on the settlement methodology, which may use an auction, an average over a time window, or designated market observations.
A final settlement price can therefore differ from a last-traded screen quote without implying a pricing failure. This distinction matters when futures trading exposure is held through CFDs that roll before the exchange’s final settlement. Review the exchange’s settlement calculation and the broker’s rollover timetable; the CFD may never experience the final convergence shown in the expiring contract’s historical record.
Rollover Activity Can Make Continuous Charts Look Like Spot Convergence
Trading volume often migrates from the nearby futures month to the next contract before expiration. Data vendors may splice contracts together and adjust historical prices to remove visible jumps, producing a continuous chart that is convenient for analysis but not a record of executable prices.
A smooth series can conceal a substantial spread between delivery months. It is possible for the displayed continuous chart to appear stable while the actual contract held by a CFD provider changes and a rollover adjustment is applied. Before opening a futures-linked CFD position, identify its current contract month, compare that contract with the matching deliverable or settlement benchmark, and verify the provider’s rollover date, price adjustment, and spread.
