How do you calculate short strangle breakeven?

The upper breakeven is the short call strike plus the total credit received, and the lower breakeven is the short put strike minus the total credit. With a $105 call and a $95 put sold for $3.50 combined, the trade is profitable at expiration anywhere between $91.50 and $108.50.

Is a short strangle risky?

Yes, in the sense that the maximum loss is undefined: unlimited on the upside and large on the downside. The probability of profit on any single trade is high, often 65 to 75 percent with one-standard-deviation strikes, but the occasional large loss can outweigh many wins unless position size and stop rules are strict.

Short strangle vs iron condor: which is better?

An iron condor adds long wings that cap the loss and cut the margin requirement, but the wings cost premium so the credit is smaller. A short strangle collects more and has a wider profit zone, but it needs substantially more margin and carries unlimited upside risk. Most retail traders use condors; strangles are more common in larger accounts with portfolio margin.

How much margin does a short strangle require?

Under Reg T the requirement is roughly 20 percent of the stock value minus the out-of-the-money amount plus the premium, calculated on the side with the higher requirement, plus the premium of the other side. For the example that comes to about $1,850. The requirement is recalculated daily and rises as the stock moves toward a strike.

What delta should I sell a strangle at?

A common choice is 15 to 20 delta on each side, which puts the strikes roughly one standard deviation from the stock price and gives about a 70 percent probability that both expire worthless. Selling closer to 30 delta collects more credit but gets tested more often. Lower deltas widen the range but the credit may not justify the margin.

When should I close a short strangle?

Most systematic sellers close at 50 percent of the maximum profit, at a loss of two to three times the credit, or at around 21 days to expiration, whichever comes first. Closing early sacrifices a little premium in exchange for avoiding the gamma risk that dominates the final weeks.

Short Strangle Calculator & strategy guide

VolatilityAdvancedNeutralUndefined risk

Sell an OTM call and OTM put to profit from low volatility with a wider profit range than a straddle.

Payoff at expiration

Worked example: XYZ at $100, 45 days to expiration

Profit Loss Breakeven

Max profit: +$350; Total premium received
Max loss: Unlimited; Unlimited
Breakevens: $91.50 & $108.50; Put strike − total premium · Call strike + total premium

The trade · net credit $3.50 a share ($350)

Sell $105 call · $1.90
Sell $95 put · $1.60

Price this short strangle on SPY with today's chain — then change the ticker, strikes and expiry.

Open in Build

What is a short strangle?

A short strangle is a two-leg, market-neutral premium selling strategy in which you sell an out-of-the-money call and an out-of-the-money put on the same underlying with the same expiration. You collect both premiums up front, and that credit is the maximum profit. The trade wins if the stock stays between the two short strikes through expiration so that both options expire worthless.

Compared with a short straddle, the strangle collects less premium but gives the stock room to move. The profit zone is the full width between the strikes plus the credit on each side, so the position tolerates ordinary day-to-day volatility better. It is short theta, profiting from time decay every day, and short vega, profiting when implied volatility falls. It is also short gamma, so a fast move in either direction hurts more than the change in stock price alone would suggest.

The payoff diagram is a flat plateau between the short strikes, sloping down on either side once the stock passes a strike, and crossing zero at the breakevens. Beyond the breakevens the loss grows one dollar per share for every dollar the stock moves, with no ceiling on the upside and a floor only at a stock price of zero on the downside. An iron condor is a short strangle with protective wings added to cap those losses.

Setup

Leg	Strike	Expiry
Sell 1 call	1 strike OTM	Near
Sell 1 put	1 strike OTM	Near

Short Strangle example

XYZ trades at $100 with 45 days to expiration. You sell the $105 call for $1.90 and the $95 put for $1.60. The net credit is $3.50 per share, or $350 per strangle. The breakevens are $108.50 and $91.50, giving a $17.00-wide profit zone.

Stock at expiration	Result
$100 (unchanged), or anywhere between $95 and $105	Both options expire worthless. You keep the full $350 credit, the maximum profit.
$108.50 or $91.50	Breakeven. One option is $3.50 in the money, exactly offsetting the credit. P&L is $0.
$112	The call is $7.00 in the money and the put is worthless. Loss is $700 minus the $350 credit, or −$350.
$80	The put is $15.00 in the money and the call is worthless. Loss is $1,500 minus the $350 credit, or −$1,150.

Maximum profit is the $350 credit if XYZ closes anywhere between $95 and $105. The trade remains profitable between $91.50 and $108.50. Beyond those points the loss grows by $100 per dollar of stock movement with no upper limit on a rally.

When to use a short strangle

Implied volatility is elevated relative to its recent history, so out-of-the-money options are rich and likely to contract.
You expect the stock to stay within a range and want a wider margin for error than a short straddle offers.
There is no earnings report or other known catalyst inside the expiration window, or IV is high enough that you are willing to sell through it.
You have margin approval for naked options and enough capital to hold the position through a temporary move against you.
Typical entries use 30 to 60 days to expiration and short strikes around the 15 to 20 delta on each side, roughly one standard deviation from the stock price.

Risks to understand

Losses are unlimited on the upside and very large on the downside. A single gap through a strike can exceed many months of collected credits.
A rise in implied volatility inflates both short options at once, causing a mark-to-market loss and a higher margin requirement before the stock has even reached a strike.
The reward-to-risk ratio is poor by construction. In the example you collect $350 while a $20 move against you costs more than $1,000, so a high win rate is essential.
Early assignment is possible once a short option goes in the money, particularly the put near an ex-dividend date or when extrinsic value has nearly disappeared.
Margin requirements expand as the stock moves toward a strike, and a forced liquidation during a volatility spike locks in losses at the worst time.

Managing the trade

Close the position at 50 percent of the credit received. Waiting for the last half of the premium exposes you to the steepest gamma risk for a small additional gain.
When the stock approaches one strike, roll the untested side closer to the current price to collect more credit and shift the breakeven in your favor.
Roll the tested side out in time, and if needed further away from the stock, ideally for a net credit, to give the trade room to recover.
Set a hard stop at two to three times the credit received, and honor it. A short strangle left to run against a trending stock has no natural floor.
Consider closing or rolling at around 21 days to expiration regardless of P&L, because the remaining premium is small relative to the gamma risk in the final weeks.

Short Strangle FAQs

How do you calculate short strangle breakeven?: The upper breakeven is the short call strike plus the total credit received, and the lower breakeven is the short put strike minus the total credit. With a $105 call and a $95 put sold for $3.50 combined, the trade is profitable at expiration anywhere between $91.50 and $108.50.
Is a short strangle risky?: Yes, in the sense that the maximum loss is undefined: unlimited on the upside and large on the downside. The probability of profit on any single trade is high, often 65 to 75 percent with one-standard-deviation strikes, but the occasional large loss can outweigh many wins unless position size and stop rules are strict.
Short strangle vs iron condor: which is better?: An iron condor adds long wings that cap the loss and cut the margin requirement, but the wings cost premium so the credit is smaller. A short strangle collects more and has a wider profit zone, but it needs substantially more margin and carries unlimited upside risk. Most retail traders use condors; strangles are more common in larger accounts with portfolio margin.
How much margin does a short strangle require?: Under Reg T the requirement is roughly 20 percent of the stock value minus the out-of-the-money amount plus the premium, calculated on the side with the higher requirement, plus the premium of the other side. For the example that comes to about $1,850. The requirement is recalculated daily and rises as the stock moves toward a strike.
What delta should I sell a strangle at?: A common choice is 15 to 20 delta on each side, which puts the strikes roughly one standard deviation from the stock price and gives about a 70 percent probability that both expire worthless. Selling closer to 30 delta collects more credit but gets tested more often. Lower deltas widen the range but the credit may not justify the margin.
When should I close a short strangle?: Most systematic sellers close at 50 percent of the maximum profit, at a loss of two to three times the credit, or at around 21 days to expiration, whichever comes first. Closing early sacrifices a little premium in exchange for avoiding the gamma risk that dominates the final weeks.