Trading Spreads Using ETCD

A spread is a simultaneous purchase and sale of two ETCD contracts on the same underlying currency pair but with different strike prices, expiries or contract sizes. The idea is to profit from the relative movement between the two legs rather than from the absolute direction of the currency.

Spreads reduce the net premium outlay because the premium received from the short leg offsets the premium paid for the long leg. This also limits the maximum loss to the net premium (or margin) required, making spreads a popular risk‑management tool for distributors and retail investors.

For the NISM exam, you will often be asked to identify which spread best matches a given market view, compute its payoff diagram, or select the correct margin treatment. Remember that the spread’s profit is the difference between the two leg prices multiplied by the contract size, after accounting for transaction costs.

• Long leg – the contract you buy.
• Short leg – the contract you sell.

Four spread structures dominate the ETCD syllabus: the bull call spread, bear put spread, calendar spread and diagonal spread. Each varies by the strike price relationship and the expiry of the legs.

A bull call spread uses a lower‑strike call bought and a higher‑strike call sold, both with the same expiry. It is used when the trader expects a moderate rise in the currency pair.

A bear put spread is the mirror image: a higher‑strike put bought and a lower‑strike put sold, again with the same expiry, suitable for a moderate decline expectation. Calendar and diagonal spreads involve different expiries and are more advanced, often tested for their margin implications.

To construct a bull call spread, an investor buys a call option with a lower strike (K1) and simultaneously sells a call with a higher strike (K2) on the same currency pair and expiry. The net premium is usually a debit because the lower‑strike call is more expensive.

The maximum profit occurs when the underlying spot rate at expiry is at or above K2. At that point, the long call is deep in‑the‑money and the short call is exercised, locking in the difference (K2‑K1) minus the net premium.

The maximum loss is limited to the net premium paid, which happens if the spot rate stays below K1 at expiry. The breakeven point is K1 plus the net premium. These three numbers are frequently asked in multiple‑choice questions.

A bear put spread is built by buying a put with a higher strike (K1) and selling a put with a lower strike (K2) on the same expiry. The net premium is also a debit because the higher‑strike put costs more.

The maximum profit is realized when the spot rate at expiry is at or below K2. The profit equals (K1‑K2)×Q minus the net premium. Conversely, the maximum loss equals the net premium if the spot stays above K1.

Breakeven is calculated as K1 minus the net premium. Remember the symmetry with the bull call spread – the formulas are identical except that the strikes are reversed and the market view is bearish.

All ETCD spreads have a limited risk and limited reward, which is why they are favoured by risk‑averse participants. The risk is capped at the net premium paid (or received, in the case of credit spreads), while the reward is capped at the difference between the strikes less the net premium.

Graphically, the payoff diagram shows a flat loss region, a linear gain region, and a flat profit region. The slope of the linear region equals the contract size (Q). Understanding this shape helps you quickly eliminate impossible answer choices in exam questions.

Key exam points include: identifying the maximum profit, maximum loss, and breakeven; recognising whether the spread is a debit (net premium paid) or credit (net premium received) structure; and selecting the correct margin treatment.

SEBI’s margin framework treats a spread as a single position. The exchange calculates the margin based on the worst‑case loss of the spread, which is the net premium for debit spreads or the short leg’s initial margin minus the premium received for credit spreads.

Settlement of ETCD spreads follows the same cash‑settlement mechanism as individual contracts. At expiry, the net cash flow equals the payoff of the long leg minus the payoff of the short leg, multiplied by the contract size.

For the exam, remember that the margin requirement is lower than the sum of individual leg margins, and that cash settlement occurs on the settlement price published by the exchange, not on the spot market rate.

Questions often test your ability to match a market view with the appropriate spread, compute maximum profit/loss, and identify the breakeven point. Pay close attention to whether the spread is a debit or credit structure, as this determines the direction of cash flow at initiation.

Another common area is margin treatment. You may be asked to select the correct margin amount from a set of options; recall that the margin equals the higher of the two leg margins less the net premium.

Finally, scenario‑based items may present a trader’s expectation and ask you to construct the spread, specifying strike prices, premiums and the resulting payoff diagram. Practising the step‑by‑step method shown in the example will help you avoid mistakes.