Risk Reversal Strategy: Funding a Call by Selling a Put

A risk reversal strategy sounds like something that removes risk. It doesn’t. In its bullish form, you buy an out-of-the-money call and pay for it by selling an out-of-the-money put. The put premium funds the call, so the trade can cost close to nothing upfront. The catch is that you’ve quietly signed up to own the stock if it falls below the put strike. That trade-off is the whole story, and most of this guide is about understanding it before you place the order.

Flip the legs around and you get the protective version. If you already hold shares, you can buy a put and sell a call against them. That’s the “short” risk reversal, and Investopedia notes it is often called a protective collar. Same building blocks, very different purpose.

What a risk reversal strategy actually is

Strip away the jargon and a risk reversal is two options on the same underlying and the same expiry, at two different strikes. You buy one and write the other. The bought option costs a premium. The written option brings premium in, which lowers or can fully cancel the cost of the trade. The written option also creates an obligation, and that’s where the risk sits.

There are two directions:

• Long (bullish) risk reversal: buy a call, sell a put. You gain if the price rises past the call strike. You lose if it drops below the put strike.
• Short (bearish or hedging) risk reversal: buy a put, sell a call. On its own it’s a bearish bet. Paired with shares you already own, it puts a floor under losses and a ceiling on gains.

Investopedia’s description of how traders use it is useful here. Someone who is short an asset can use a long risk reversal, buying a call and writing a put, so a rally is cushioned by the call. Someone long the asset does the reverse, writing a call and buying a put, so a fall is cushioned by the put while upside stops at the call strike.

Why the bullish version behaves like owning the stock

The Options Industry Council (OIC) explains the cleanest way to think about this. If you buy a call and sell a put at the same strike and expiry, you’ve built a synthetic long stock position. OIC describes it as essentially a long futures position: unlimited upside, and large though limited downside if the stock collapses. When the call strike is higher than the put strike, OIC says the same structure is sometimes called a collar or a risk reversal.

So a bullish risk reversal is a synthetic long with a gap cut out of the middle. Between the two strikes, nothing much happens at expiry. Above the call strike, you participate like a shareholder. Below the put strike, you lose like a shareholder too. That’s the part beginners miss. Selling the put means the downside is real, and it’s not small.

A bullish risk reversal is a cheap way to look like a stock owner above one price and a reluctant stock owner below another. If you wouldn’t want to hold the shares at the put strike, you shouldn’t be selling that put.

A worked example of a bullish risk reversal

Let’s run the numbers with a made-up stock. Everything below is hypothetical and kept simple so the payoff is easy to follow. Brokerage, taxes and margin are left out.

• Stock: XYZ Ltd, trading at ₹1,000
• Lot size: 500 shares
• Buy the 1,050 call for ₹22
• Sell the 950 put for ₹25
• Net result: a credit of ₹3 per share, or ₹1,500 per lot

A credit means you’re paid to put the trade on. That happens only when the put you sell is pricier than the call you buy. It won’t always be the case, so check the actual premiums before assuming.

Here’s what the position is worth per share and per lot at expiry, across a range of closing prices:

A few things jump out. Anywhere between ₹950 and ₹1,050 you just keep the ₹3 credit. Above ₹1,050, every rupee the stock gains is a rupee for you, plus that credit. Below ₹950, every rupee it loses comes out of your pocket, softened only by the ₹3. The breakeven on the downside is the put strike minus the credit: ₹950 − ₹3 = ₹947.

Now look at the asymmetry in your head, not on paper. A 15% rally to ₹1,150 makes ₹51,500 a lot. A 15% fall to ₹850 loses ₹48,500. That’s roughly the same as holding 500 shares outright, minus the ₹100 dead zone in the middle. People reach for risk reversals because they feel cheap. They aren’t cheap in risk terms at all.

What if it costs money instead?

Suppose premiums are different: the 1,050 call costs ₹30 and the 950 put fetches only ₹20. Now you pay a net debit of ₹10 per share. The maths shifts:

• Upside breakeven: call strike plus debit, ₹1,050 + ₹10 = ₹1,060.
• Between ₹950 and ₹1,050, you lose the ₹10 debit.
• Below ₹950, losses grow from ₹10 per share. At ₹940, it’s −₹20.

This matches the breakeven rule OIC gives for the same-strike synthetic long: strike plus net debit, or strike minus net credit. With two strikes, you apply it to whichever leg is in the money.

The hedging version: using a risk reversal on shares you own

Now the other direction. Say you already hold 500 shares of the same hypothetical XYZ, bought at ₹1,000, and results are a week away. You don’t want to sell, but you’d like a floor. You buy the 950 put for ₹25 and sell the 1,050 call for ₹22, a net debit of ₹3.

• If XYZ falls to ₹900 or even ₹800, your loss stops at ₹53 per share: the ₹50 drop to the put strike plus the ₹3 debit. That’s ₹26,500 on the lot, however far the stock falls.
• If XYZ rallies to ₹1,200, your gain stops at ₹47 per share: the ₹50 up to the call strike minus the ₹3 debit, or ₹23,500 on the lot.
• If it sits at ₹1,000, you’re down just the ₹3 debit, ₹1,500.

Investopedia’s own example has the same shape: an investor long GE near $11 buys a $10 put and sells a $12.50 call. Prices below $10 are covered by the put, and gains stop at $12.50. We’ve covered the stock-plus-two-options version in more depth in our guide to the collar options strategy, and the single-leg insurance idea in the protective put strategy.

The hedging risk reversal is honest about what it sells: you give away the big win to make the big loss impossible. Whether that’s a good deal depends on how much you actually fear the downside this month.

Risk reversal strategy variations

Investopedia lists two common tweaks.

Ratio risk reversal. You buy and sell unequal numbers of options. In a bullish version, you might buy two calls for every put you sell. That leans harder into the upside view, but it also means the put premium covers less of the cost, so it’s rarely free.

Calendar risk reversal. The legs use different expiries. The idea is to use faster time decay on the shorter-dated option you sell to help pay for the longer-dated one you buy. It’s more moving parts, and you need to track two expiry dates rather than one.

What “risk reversal” means in currency markets

You’ll also hear the term in forex commentary, and there it means something else. In FX, a risk reversal is the gap between the implied volatility of out-of-the-money calls and out-of-the-money puts. Per Investopedia, a positive reading means calls carry higher volatility than comparable puts, so more traders are positioned for the currency to rise, and a negative reading points the other way. So if a rupee report mentions risk reversals, it’s describing sentiment from the options market, not a trade someone placed.

Where a risk reversal goes wrong

Investopedia’s list of limitations is blunt, and we’d add a couple of practical points from how traders actually get hurt.

1. The market goes the wrong way. With the bullish version, a sharp fall below the put strike behaves like a loss on owned shares. The name says “reversal”, not “elimination”.
2. Volatility moves. When implied volatility rises, options generally get more expensive, which changes what you pay for the call and what you earn on the put.
3. Costs and spreads. Two legs mean two sets of charges, and on illiquid strikes the bid-ask spread can eat a credit that looked attractive on screen.
4. Margin on the short put. Selling an option usually means your broker blocks margin for it. A position that costs nothing upfront can still tie up a fair bit of capital, and that requirement can rise if the market turns against you.
5. Assignment. OIC points out that a deep in-the-money short put can be assigned early on exercise-anytime contracts, and corporate events like mergers or special dividends can upset normal expectations. Know the exercise style and settlement rules of the exact contract you’re trading.

The general lesson is the same one we keep coming back to in our options trading for beginners in India guide. Size the trade on the worst case, not the premium. If the bullish risk reversal on one lot could lose ₹48,500 on a 15% fall, that’s the number your position sizing should be built around, not the ₹1,500 credit.

When a risk reversal strategy makes sense

The bullish version fits a trader with a clear upward view on a specific stock or index, a timeframe that matches the expiry, and genuine comfort owning the underlying at the put strike. Event setups are a common case. Investopedia notes traders time these around earnings announcements and other expected catalysts, and look at implied volatility before entering.

The hedging version fits someone who holds shares, doesn’t want to sell for tax or conviction reasons, and is happy to cap gains for a while in exchange for a known floor.

It doesn’t fit anyone treating the put premium as free money. If you’d panic at being forced to buy at the put strike, a plain call purchase, where the most you can lose is the premium, is the simpler choice. Less clever, but you’ll sleep better.

A quick pre-trade checklist

• Write down your view: direction, size of move, and by when.
• Pick strikes so the put strike is a price you’d honestly accept owning at.
• Check net premium: is it a credit or a debit, and how big?
• Work out breakevens and the loss at a 10% and 20% adverse move per lot.
• Ask your broker for the margin on the short leg before you trade.
• Check liquidity and bid-ask spreads on both strikes.
• Decide your exit before entry, including what you’ll do if the stock nears the put strike.

Done right, a risk reversal is a tidy way to express a view or protect a holding without spending much cash. Done carelessly, it’s a stock position in disguise with a leveraged downside you didn’t notice. The difference is mostly in that checklist.

Disclaimer: This article is for educational purposes only and is not investment advice. All stocks, prices, premiums and lot sizes in the examples are hypothetical and used only to explain the calculation. Options trading involves substantial risk. Consult a SEBI-registered investment adviser before making investment decisions.