A bond’s quoted price does not always represent the amount exchanged when the security changes hands. Between coupon dates, interest accumulates for the current holder, creating a difference between the quoted clean price and the dirty price used for settlement. A CFD referencing a bond can inherit that distinction, or handle it through separate adjustments, depending on its contract specification.
For cfds trading, the difficulty is identifying which component of a bond’s value the provider actually quotes. A chart that barely moves can coexist with changing accrued interest, while an apparent price drop around a coupon date may not represent a comparable economic loss.
Clean-Price Quotes Can Conceal the Settlement Amount
Many conventional bonds are quoted on a clean-price basis, excluding accrued coupon interest. Their dirty price adds accrued interest to the clean quote. A derivative referencing the clean price may therefore display only part of the change in a bond’s settlement value.
A provider might incorporate accrual into its quoted reference, post a separate adjustment or offer a product linked to a bond futures contract instead. These arrangements are not interchangeable. Without checking the instrument’s pricing basis, a trader may attribute a difference between a bond chart and CFD account value to slippage when it reflects the treatment of accrued interest.
Day-Count Conventions Change the Size of the Accrual
Accrued interest depends on the bond’s coupon, the elapsed portion of its coupon period and the applicable day-count convention. Actual/Actual, Actual/360 and 30/360 methods can produce different figures for the same calendar interval. Settlement conventions and holiday calendars can also determine how many days have accrued by a transaction’s effective date.
The differences are usually modest over a single day but become relevant for large notional exposures or comparisons between instruments. A calculation based on calendar days divided by 365 may disagree with the bond’s official accrual without either market price having changed.
Coupon Dates Can Create a Misleading Price Drop
Imagine a hypothetical fixed-rate government bond with $100,000 face value, a 6% annual coupon paid semiannually and a clean price of 101.00. Immediately before the coupon payment, assume accrued interest is $3,000, so the dirty value is $104,000. Immediately after the coupon date, assume the clean price remains 101.00 and accrued interest resets to zero, leaving a dirty value of $101,000.
The $3,000 decline in dirty value is offset economically for the bondholder by the $3,000 coupon received, ignoring other price changes. A long CFD referencing dirty value without an appropriate coupon adjustment could show a $3,000 loss on this notional exposure. Whether a corresponding credit appears depends on the provider’s rules. A clean-price-linked CFD may show no comparable drop, even though both instruments reference the same bond.
Accrued Interest Is Not the Same as CFD Financing
A bond’s accrued coupon represents interest earned under the issuer’s payment schedule. Overnight financing on a leveraged CFD is a separate contractual charge or credit imposed by the provider. Receiving a coupon-related adjustment does not automatically compensate for financing costs.
For cfds trading strategies held across several coupon periods, the difference can materially change net returns. A seemingly attractive bond yield may be outweighed by borrowing charges, spread costs or adjustments that do not replicate physical ownership. Comparing the coupon rate directly with the CFD financing rate overlooks the product’s price basis and adjustment policy.
Yield Movements Can Overwhelm Predictable Accrual
Accrued coupon generally follows a known schedule, whereas clean prices respond to changing yields and credit conditions. A rise in yields can reduce the bond’s market price by far more than the interest accumulated during the holding period. Long-duration bonds are particularly sensitive, making a steady accrual schedule a poor substitute for measuring price risk.
Before opening a bond-referenced CFD, obtain the provider’s clean-versus-dirty pricing definition, coupon-adjustment timetable, day-count basis and financing schedule. Calculate the expected account entries immediately before and after the next coupon date, then stress-test the position against a specified yield increase using the instrument’s price sensitivity.