A futures contract does not always promise delivery of something that can be stored, shipped or transferred. Some contracts reference a published measure of prices, rates or market conditions instead. At expiration, the exchange determines a cash amount from that measure, allowing participants to settle their obligations without exchanging the underlying components.
For futures trading, this design removes delivery logistics but introduces dependence on index methodology and settlement procedures. Five distinctions explain why an index-settled contract can behave differently from a deliverable future and from a CFD tracking it.
An Index May Represent Something That Cannot Be Delivered
An equity index is a calculated portfolio measure, not a warehouse receipt. Delivering its precise basket of shares would require coordinating many securities, corporate actions and fractional weights. Weather indices and some interest-rate benchmarks are even less suitable for physical transfer.
Cash settlement converts the final difference between the contract price and the official settlement value into a payment. The contract specifications determine the multiplier and calculation date. A CFD referencing the same index may use its provider’s own quote and expiry arrangements, so the two instruments should not be assumed identical.
Settlement Methodology Can Matter More Than the Last Screen Price
An index futures contract might settle against an opening auction calculation, a closing reference or an average collected during a specified window. The final number can differ from the last futures quote seen before trading ends.
A hypothetical regional airline-cost index future has a multiplier of $20 per point. A long position opened at 410 is marked near 418 shortly before expiry, suggesting a $160 gain. The exchange’s prescribed settlement calculation instead produces 414.5, yielding $90, before fees. The $70 difference reflects the settlement reference, not an unexplained deduction. A related CFD held through the same period might close at a separate executable bid, creating yet another result.
Reference Data Can Be Revised or Disputed
Index-settled contracts depend on an administrator collecting and processing information. Missing constituent prices, delayed reports or calculation errors can complicate the final fixing. Exchange rules generally specify how exceptional circumstances are handled, potentially including fallback calculations or delayed determination.
A position that appears straightforward on a continuous chart can therefore face uncertainty about the value used for its final cash adjustment. Review the exchange’s settlement rulebook and the index administrator’s publication procedures, especially for benchmarks based on infrequently observed data.
The Absence of Delivery Does Not Remove Basis Risk
Cash settlement eliminates the need to source an asset for delivery, but it does not ensure that the contract perfectly offsets a real-world exposure. A shipping company hedging regional freight costs with a broad freight index may face a different route mix, timing convention or contract coverage.
In futures trading, the mismatch can become pronounced when individual routes diverge. A futures hedge may settle exactly as designed while the company’s actual costs move differently. A CFD tied to that future adds its own spread and financing terms, widening the possible difference between the hedge and the underlying expense.
Expiry and Rollover Rules Can Reshape CFD Exposure
An index future ends on its contractual settlement date. A broker offering a CFD linked to successive futures may instead close positions, apply a rollover adjustment or switch its reference contract under stated terms. None of these treatments should be inferred from the exchange’s cash-settlement rule alone.
A longer holding period can make these administrative choices more consequential than a modest daily index move. Before opening an index-linked CFD, identify the precise reference future, its settlement index and fixing window, then check the broker’s expiry calendar, rollover policy and contract multiplier against the exchange specification.
