Agora Circle
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Neutral2 LegsUndefined risk

Call Ratio Spread

Buy one call and sell two higher calls, usually for a credit. Profits from a modest rise to the short strike, with open ended risk above it.

By Team Agora Circle

Written by the Agora Circle editorial team. Educational content, explained for the Indian market. Not investment advice.

Market outlook
Neutral to mildly bullish. You expect a limited rise, not a runaway rally.
Setup
Buy 1 call at a lower strike and sell 2 calls at a higher strike, often for a net credit.
Max profit
Capped. At the short strike: the strike gap plus any net credit received.
Max loss
Open ended above the short strike, because you are net short one extra call.
Breakeven
Below there is usually no loss if entered for a credit; above, the short strike plus the strike gap and net credit.
Implied volatility
Net short vega. Falling implied volatility helps; a volatility spike hurts.
Time decay
Time decay generally helps, since you are net short an option.

Strategy Overview

A call ratio spread buys one call and sells two calls at a higher strike, leaving you net short one extra call. Structured well, it is opened for a small net credit, which means a flat or falling market simply keeps that credit. The sweet spot is a gentle rise that carries the index up to the short strike, where the long call has gained value and the two short calls are still expiring worthless.

The catch is the open ended risk above the short strike. Because you are short one more call than you are long, a strong rally past the short strike turns the position into an effective naked short call, and the loss grows without a hard limit. This is a trade for a view of a limited move, not an explosive one.

It suits a mildly bullish or neutral outlook where you think the index will rise a little but not surge. The reward is capped and the downside is usually harmless, but the price of that is a tail risk on the upside that must be respected and managed.

How to Set It Up

Two strikes in a one to two ratio, all calls, ideally structured for a net credit.

  1. 1Buy 1 call at or near the money.
  2. 2Sell 2 calls at a higher strike, choosing the distance so the premium collected roughly matches or exceeds the cost of the long call.
  3. 3Note the net credit or debit. Above the short strike you carry the risk of one naked short call.

Payoff Diagram and Example

Max Profit

Capped. At the short strike: the strike gap plus any net credit received.

Max Loss

Open ended above the short strike, because you are net short one extra call.

Breakeven

Below there is usually no loss if entered for a credit; above, the short strike plus the strike gap and net credit.

Call Ratio Spread payoff diagram025,00025,200BE 25,440ProfitLossNIFTY at expiry

Suppose NIFTY is at 25,000 and you expect a limited rise. You buy the 25,000 call for 200 and sell two 25,200 calls for 120 each. The premium collected is 240, against 200 paid, so you open for a net credit of 40 points, about Rs 3,000 on a lot of 75.

If the index finishes at 25,200, the long call is worth 200, the two short calls expire worthless, and you keep the 40 credit, for a peak profit of 240 points, about Rs 18,000. Below 25,000 everything expires worthless and you simply keep the 40 point credit.

The danger is above. The upside breakeven is 25,440, and beyond it the extra short call means losses grow without limit. A rally to 25,700, for example, would turn the position into a sizeable loss, which is why an upside stop is essential.

Entering and Exiting

Enter both legs together and aim for a net credit, which makes the downside harmless and defines a clean risk picture.

Exit by closing the package once the index nears the short strike and most of the profit is captured, rather than holding into a possible late rally.

Above all, set a hard rule for the upside. Because the risk is open ended, a stop on the index level or on the position's loss is what keeps a ratio spread from becoming a large naked short call.

Time Decay (Theta)

Time decay generally works for the position, because you are net short an option. If the index sits below or at the short strike, the two short calls lose value faster than the single long call.

The decay benefit only holds while the index stays at or below the short strike. Above it, price risk dominates and time decay is irrelevant to the growing loss.

Implied Volatility (Vega)

The position is net short vega, so falling implied volatility helps and a volatility spike hurts. Entering when IV is elevated collects richer premium on the two short calls.

A jump in IV, often alongside a sharp rally, is doubly damaging: it inflates the short calls at the same time the price is moving against them. This reinforces why the upside must be managed.

Common Adjustments

If the index rallies toward the short strike, you can buy back one short call to remove the naked exposure, converting the position into a simple bull call spread with defined risk.

You can roll the short calls up and out to a higher strike or later expiry to push the risk zone away, treating the extra premium as a fresh decision.

If the credit has largely been earned and the index is climbing, simply closing the whole position is often the cleanest way to avoid the open ended tail.

Synthetic Equivalent

A call ratio spread is a bull call vertical, long the lower call and short one higher call, combined with an extra naked short call at the higher strike. That extra short call is the source of both the added premium and the open ended upside risk.

Buying back the extra short call collapses the position into a plain bull call spread, which is the defined risk core hiding inside the ratio.

Pros and Cons

Pros

  • Often opened for a net credit, so a flat or falling market still profits.
  • Strong capped profit if the index drifts up to the short strike.
  • Time decay and falling volatility both tend to help.
  • Flexible strikes let you place the profit peak where you expect the index to settle.
  • Can be repaired into a defined risk bull call spread if the rally accelerates.

Cons

  • Open ended risk above the short strike from the extra naked call.
  • A sharp rally, especially with rising volatility, can produce a large loss.
  • Requires margin for the naked short call and active management.
  • Not suitable when a big upside move is plausible.

Frequently Asked Questions

Why would I open a ratio spread for a credit?

So that the downside is harmless. If the index falls or stays flat, every option expires worthless and you keep the credit. The credit also widens the upside breakeven, giving the trade more room before the naked short call starts to hurt.

Where is the real risk in this trade?

Above the short strike. You are short one more call than you are long, so a strong rally turns the position into an effective naked short call with open ended loss. That upside tail is the defining risk and must be actively managed.

How do I remove the unlimited risk?

Buy back one of the short calls. That leaves you with a long call and a single short call, which is a bull call spread with a fully defined maximum loss. Many traders do this the moment the index approaches the short strike.

Is a call ratio spread bullish?

Only mildly. It profits most from a limited rise to the short strike and is comfortable with a flat or falling market. What it cannot tolerate is a large rally, so it is really a neutral to slightly bullish view on a contained move.

Where does a call ratio spread make the most money?

At the short strike: the gap between the strikes plus any net credit. In the example that is the 200 point gap plus the 40 credit, or 240 points, about Rs 18,000, reached if the index finishes at 25,200.

Related Strategies

This page is for education only. It is not investment advice, and nothing here is a recommendation to buy or sell any instrument. Options involve substantial risk, and option sellers can lose far more than the premium they receive. Please do your own research or consult a SEBI registered investment adviser before trading. Read our full disclaimer.

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