Short Strangle Strategy: Meaning & How It Works

A short strangle is an options strategy used when you expect a stock to remain within a broad price range until expiry.

The strategy usually combines two out-of-the-money options:

1. You sell a call option at a strike price above the current stock price.
2. You sell a put option at a strike price below the current stock price.

Both options have the same underlying stock, expiry date and contract quantity.

An option is called out of the money, or OTM, when it has no intrinsic value at the current stock price. For example, if a stock is trading at ₹100, a ₹110 call and a ₹90 put are both out of the money.

A short strangle is mainly a bet on low volatility. The trader expects the stock to move less than what option premiums currently suggest.

The trader receives premiums from selling both options. However, the maximum profit is limited to the total premium received, while losses can become very large if the stock moves sharply beyond either strike price.

How Does a Short Strangle Work?

Suppose ABC Ltd. is trading at ₹100. Priya expects the stock to remain between ₹90 and ₹110 over the next month.

She creates the following position:

Priya receives ₹4 per share from selling the ₹110 call and ₹3 per share from selling the ₹90 put.

Her total premium received is:

• Total Premium = Call Premium + Put Premium
• Total Premium = ₹4 + ₹3 = ₹7 per share

Assume one options contract represents 5,000 shares. Priya’s total premium received is:

• ₹7 x 5,000 = ₹35,000

This ₹35,000 is the maximum profit Priya can earn from the strategy, excluding brokerage, taxes and other charges.

If ABC Ltd. remains between ₹90 and ₹110 until expiry, both options expire without value and Priya keeps the full premium.

However, if the stock rises sharply above ₹110 or falls sharply below ₹90, one of the sold options starts creating a loss.

Why Do Traders Use a Short Strangle?

A trader may use a short strangle when they expect the stock to remain within a wider range and want to earn premiums from both sides.

Since the call and put are out of the money, the stock has some room to move before either option starts creating an intrinsic loss.

The trader is effectively saying:

I expect ABC Ltd. to remain within a broad range, and I believe the actual movement will be smaller than what option premiums currently suggest.

The main trade-off can be understood as follows:

A short strangle therefore suits a trader who expects low volatility but wants a wider profitable range than a short straddle provides.

How Does the Strategy Perform at Different Stock Prices?

Priya’s result depends on where ABC Ltd. trades at expiry.

1. If the stock remains between ₹90 and ₹110

Suppose ABC Ltd. finishes at ₹100.

The ₹110 call expires without value because the stock remains below its strike price. The ₹90 put also expires without value because the stock remains above its strike price.

Priya keeps the full ₹7 premium per share.

• Maximum Profit = ₹7 x 5,000
• Maximum Profit = ₹35,000

This is the maximum possible profit from the strategy.

2. If the stock rises above ₹110 but remains below the upper break-even

Suppose ABC Ltd. rises to ₹115.

The ₹110 call creates a loss of ₹5 per share, while the ₹90 put expires without value.

Priya had received ₹7 per share as total premium. After adjusting the ₹5 call loss, she still earns ₹2 per share.

• Profit = (₹7 - ₹5) x 5,000
• Profit = ₹10,000

The strategy remains profitable because the stock is still below the upper break-even price of ₹117.

3. If the stock rises above the upper break-even

Suppose ABC Ltd. rises to ₹125.

The ₹110 call creates a loss of ₹15 per share. The ₹90 put expires without value.

After adjusting the ₹7 premium received, Priya faces a net loss of ₹8 per share.

• Loss = (₹15 - ₹7) x 5,000
• Loss = ₹40,000

If the stock continues rising, the loss continues increasing. The maximum loss on the upside is unlimited in theory.

4. If the stock falls below ₹90 but remains above the lower break-even

Suppose ABC Ltd. falls to ₹85.

The ₹90 put creates a loss of ₹5 per share, while the ₹110 call expires without value.

After adjusting the ₹7 premium received, Priya still earns ₹2 per share.

• Profit = (₹7 - ₹5) x 5,000
• Profit = ₹10,000

The strategy remains profitable because the stock is still above the lower break-even price of ₹83.

5. If the stock falls below the lower break-even

Suppose ABC Ltd. falls to ₹75.

The ₹90 put creates a loss of ₹15 per share. The ₹110 call expires without value.

After adjusting the ₹7 premium received, Priya faces a net loss of ₹8 per share.

• Loss = (₹15 - ₹7) x 5,000
• Loss = ₹40,000

If the stock falls further, the loss continues increasing. The downside loss is substantial, although it is limited because a stock cannot fall below zero.

The outcomes can be summarised as follows:

The payoff has three clear zones:

• Between ₹90 and ₹110, Priya earns the maximum profit of ₹35,000.
• Between ₹83 and ₹117, the strategy remains profitable.
• Below ₹83 or above ₹117, the strategy starts creating a loss.

How Are Maximum Profit, Maximum Loss and Break-Even Calculated?

The key calculations for Priya’s short strangle are:

The maximum profit is limited to the ₹35,000 premium received. This happens when ABC Ltd. finishes between ₹90 and ₹110 at expiry.

The upper break-even price is ₹117. Priya starts facing a loss if the stock rises above this level.

The lower break-even price is ₹83. She starts facing a loss if the stock falls below this level.

The upside loss is unlimited in theory. On the downside, the maximum theoretical loss occurs if the stock falls to zero.

How Is a Short Strangle a Bet on Low Volatility?

A short strangle trader is not betting that the stock will remain at one exact price. The trader is betting that it will remain within a broad range.

In Priya’s example, the two sold strikes are ₹90 and ₹110. She also receives a total premium of ₹7 per share, which extends her break-even range to ₹83 and ₹117.

This means ABC Ltd. can move moderately in either direction without creating an overall loss at expiry.

Time decay can help the strategy. If ABC Ltd. remains within the expected range, both options generally lose time value as expiry approaches.

A fall in expected volatility may also reduce both option premiums. Since Priya sold the options, she may be able to buy them back at lower prices.

However, high option premiums often indicate that the market expects a large move. If the stock moves beyond the break-even range, losses can quickly become much larger than the premium received.

What Are the Benefits and Risks of a Short Strangle?

• Wider profitable range: Since both options are out of the money, Priya has a broader profitable range than with a short straddle.
• Premium from two options: The strategy earns premium from both the call and put, while time decay may benefit the position.
• Maximum profit is limited: Priya can earn only the ₹35,000 premium, regardless of how stable the stock remains.
• Losses can be very large: A sharp rise can create unlimited losses in theory, while a sharp fall can also produce a substantial loss.
• Margin and monitoring are important: Selling two uncovered options requires significant margin and active risk management.

Short Strangle vs Short Straddle

Both strategies benefit when volatility remains low, but their strike selection, premium and profitable range differ.

A short straddle may be more suitable when the trader expects the stock to remain very close to the current price and wants a higher premium.

A short strangle may be more suitable when the trader expects the stock to remain within a wider range and is willing to accept a lower premium.

When Can a Short Strangle Make Sense?

A short strangle may make sense when:

• You expect the stock to remain within a broad range until expiry.
• You expect volatility and option premiums to fall.
• You want a wider profitable range than a short straddle provides.
• Both option contracts are sufficiently liquid.
• You can meet the margin requirement and actively manage sharp price movements.

The strategy may not be suitable when a major move is possible, volatility is expected to rise or you are unable to monitor the position.

Short Strangle Strategy: Final Takeaway

A short strangle is a low-volatility options strategy used when you expect a stock to remain within a broad range.

The strategy involves selling an out-of-the-money call and an out-of-the-money put with the same expiry.

In Priya’s example, she sells the ₹110 call and ₹90 put for a combined premium of ₹7 per share. Her maximum profit is limited to ₹35,000, while the strategy remains profitable between ₹83 and ₹117 at expiry.

Compared with a short straddle, a short strangle offers a wider profitable range but usually provides a lower premium.

The main risk is that losses can become much larger than the premium received if the stock moves sharply beyond either break-even price.