Iron Condor Options Strategy: Payoff, Breakevens, and Risk

Editorial responsibility: Oliver Sinz · Last verified: October 26, 2026

An iron condor is a four-leg options position that combines a short put spread below the current price with a short call spread above it, all in the same expiration. The standard (short) iron condor is opened for a net credit. It earns its maximum profit if the underlying finishes between the two short strikes at expiration, and two long “wing” options cap its loss at expiration.

That summary is accurate, but it describes only the last day of the trade. Before expiration, the position’s value moves with price, time, and implied volatility. The loss cap also holds only if all four legs stay intact through settlement. This guide covers the construction and formulas, works through a fully specified example, and then examines what the payoff diagram leaves out.

All prices in this article are hypothetical, model-generated illustrations, not market quotes. Nothing here is a recommendation to trade.

How an iron condor is built

A short iron condor uses four options on the same underlying, all with the same expiration, at four strikes K1 < K2 < K3 < K4:

Legs 1 and 2 form a bull put spread, and legs 3 and 4 form a bear call spread. Both are credit spreads, so the combined position opens for a net credit. The short strikes are usually out of the money at entry. The two wings are often, but not necessarily, the same width.

One structural fact drives most of the risk analysis. At expiration, the underlying cannot be below K2 and above K3 at the same time, so at most one of the two spreads can finish in the money. The maximum loss is therefore set by one wing, not both, and exchange margin rules size the requirement from one wing as well (see the margin discussion below).

Two ranges matter at expiration. The maximum-profit range runs between the short strikes, K2 to K3, where all four options expire worthless. The wider profitable range runs between the two breakevens, where the position still keeps part of the credit.

Naming notes. The credit position described here is what most sources mean by “iron condor.” The reversed, debit version (buy K2 and K3, sell K1 and K4) is a long or reverse iron condor, which profits from a large move in either direction. A plain “condor” uses only calls or only puts. A long call condor (buy K1, sell K2, sell K3, buy K4, all calls) has the same expiration profile as the short iron condor but costs a debit. For European-style options, put-call parity links the two: in the example below, the call condor’s model value ($3.02) equals the present value of the $5 wing width ($4.98) minus the iron condor’s credit ($1.96).

Iron condor formulas: credit, maximum profit, maximum loss, breakevens

All amounts below are per share. Multiply by the contract multiplier, which is 100 shares for standard U.S. equity options. S_T is the underlying price at expiration.

• Net credit (C) = (K2 put premium − K1 put premium) + (K3 call premium − K4 call premium)
• Maximum profit = C, earned when K2 ≤ S_T ≤ K3
• Put-side maximum loss = (K2 − K1) − C, when S_T ≤ K1 (a negative result means that side cannot lose)
• Call-side maximum loss = (K4 − K3) − C, when S_T ≥ K4 (same caveat)
• Overall maximum loss = max(K2 − K1, K4 − K3) − C
• Lower breakeven = K2 − C, which exists only if C < K2 − K1
• Upper breakeven = K3 + C, which exists only if C < K4 − K3

Between K1 and K2, and again between K3 and K4, the expiration P&L changes dollar for dollar with the underlying. In a balanced condor, no-arbitrage pricing keeps the credit below the wing width, so both breakevens exist. With unequal wings (an “unbalanced” or “skewed” condor), the position takes on a directional tilt, and the credit can exceed the narrower wing’s width. That side then cannot lose money at expiration and has no breakeven. With the worked example’s model inputs, for instance, a 94/95/105/110 condor collects $1.29. It earns exactly $0.29 per share at or below $94, its only breakeven is $106.29, and its maximum loss is $3.71, on the call side. None of these formulas include commissions, fees, or early assignment; those are covered later.

A worked iron condor example

Hypothetical assumptions:

• Underlying XYZ at $100.00, 44 calendar days to expiration
• 25% implied volatility at every strike, 4.0% risk-free rate, no dividends
• Premiums are Black–Scholes–Merton theoretical values, rounded to the cent and treated as frictionless fills (no bid-ask spread or commissions). This is the European-style model from Black and Scholes (1973) and Merton (1973).

A binomial-tree check shows that American-style early exercise would add only about $0.003 to the 90 put and $0.011 to the 95 put here. That is immaterial for this example.

• Net credit: $1.32 + $1.74 − $0.40 − $0.70 = $1.96 per share, or $196 per condor
• Maximum profit: $196, if XYZ finishes anywhere in the maximum-profit range of $95 to $105
• Maximum loss: ($5.00 − $1.96) × 100 = $304, if XYZ finishes at or below $90 or at or above $110
• Breakevens: $95 − $1.96 = $93.04 and $105 + $1.96 = $106.96, so the profitable range at expiration lies between $93.04 and $106.96
• Reward-to-risk at expiration: $196 / $304 ≈ 0.64

Plotted, these points form the familiar iron condor payoff diagram. There is a flat plateau at +$196 between the short strikes, straight slopes through each breakeven, and flat floors at −$304 beyond the wings.

The call side is closer in probability terms even though both short strikes are $5 away. That is why the 105 call carries a larger delta and premium than the 95 put. Under a flat-volatility lognormal model, equal dollar distances are not equal risks. Real option chains are rarely flat, though. The Options Industry Council describes a “smirk” in which downside strikes carry higher implied volatility, with a shape that varies with market conditions. Real premiums can therefore differ noticeably from this flat-volatility illustration.

Before expiration: why the payoff diagram is not your P&L

The expiration table answers one question: what happens if every leg is held to settlement? Before that, the position is marked at its current value. The grid below reprices the same four options with the same model, keeping implied volatility at 25%, as the stock moves and time passes. Each cell is the P&L per condor from closing at model value: the $196 credit minus the cost to buy the condor back. The 44-day row shows an instantaneous move right after entry.

Four patterns stand out:

1. Early moves are muted in both directions. A jump to $110 right after entry produces a model loss of about $119, not $304, because the options still hold time value.
2. Profit arrives late. With XYZ pinned at $100, the model gain is about $44 with 30 days left, $119 with 15 days left, and $185 with 5 days left. Less than a quarter of the credit is earned in the first two weeks; roughly 70% accrues between 30 and 5 days before expiration.
3. Inside the breakevens is not the same as profitable. With 30 days left and XYZ at $95, the edge of the maximum-profit range and well inside the profitable range at expiration, the model P&L is still slightly negative.
4. Sensitivity to price near the short strikes grows over time. A $2 drop from $95 to $93 costs about $45 with 30 days left and about $112 with 5 days left.

Closing early realizes the credit minus the actual closing price. The grid uses frictionless theoretical marks; real closing trades pay bid-ask spreads and commissions, and market prices can differ from any model value.

Price, time, and volatility: how the Greeks change across the range

Greeks are model sensitivities: the approximate change in theoretical value for a small change in one input, with the others held constant. They are local estimates, not forecasts. The table shows the example position with 30 days left at 25% implied volatility, per condor:

Three readings matter for an iron condor:

• Delta and gamma. Near the center, delta is close to zero and gamma is negative. Small moves barely register, but any sustained move turns the position directional against that move. The position becomes long delta as XYZ falls toward the put side and short delta as it rises toward the call side.
• Theta. Time decay helps in the middle of the range, at roughly $3.84 per day at $100. Near and beyond a long strike, theta turns negative. There, the options’ remaining time value is the only thing keeping the loss below its maximum, and its decay pushes the position toward that maximum.
• Vega. Vega is negative in the middle and turns positive near and beyond the long strikes. The shorthand “iron condors benefit from falling volatility” holds only while the underlying sits well inside the wings.

The same point, repriced with 30 days left under uniform implied-volatility shifts (P&L per condor):

At $100, a rise in implied volatility from 25% to 35% moves the model P&L from +$44 to −$33 with no change in price. At $112, the same rise reduces the loss.

Two caveats apply. Real volatility changes are rarely uniform across strikes. And around anticipated events such as earnings, implied volatility often falls after the announcement while the price jumps at the same time. The realized result is the net of a vega gain and a price-driven loss, and a large enough move overwhelms the volatility effect.

Probability of profit versus expected value

Iron condors are often described as “high-probability” trades. The table compares three condors with $5 wings at different distances from the $100 price, all priced with the same model:

The probabilities are risk-neutral: they come from the lognormal distribution implied by the same assumptions that produced the premiums. They are not forecasts.

The trade-off is plain. Moving the short strikes outward raises the probability of profit, lowers the credit, and raises the maximum loss. It does not change the model’s verdict on value, because no-arbitrage pricing prices probability and payoff together: each theoretical credit is the present value of the condor’s expected payout at expiration under these risk-neutral probabilities. For the 90/95/105/110 condor, that expected payout is about $196.84. Discounted at 4% for 44 days, it is $195.89, the unrounded theoretical credit. Collecting the rounded $196.00 is worth $0.11 today, and that rounding is the only model “edge.”

Measured at expiration with the credit left uninvested instead, the expected P&L is about −$0.84: the $0.11 rounding gain minus roughly $0.95 of forgone interest on the credit. The conditional figures use this convention: about a 58% chance of a profit, an average gain of about $173 when the trade is profitable, and an average loss of about $238 when it is not, which net to that −$0.84. Under either convention, all three condors in the table come out within about a dollar of zero per condor before transaction costs.

Actual outcomes depend on the real-world distribution of price changes, not on the model. Volatility, drift, and the frequency of large jumps can all differ from the model. Whether a given market’s implied volatility tends to exceed the volatility that is later realized is an empirical question, and the answer can change. Transaction costs then subtract from whatever remains.

Practitioner conventions fit the same framework. Schwab’s iron condor guide describes common choices: 30 to 60 days to expiration, short strikes near 15 to 20 delta, and a credit of roughly one-third of the wing width. These are positions on the probability-versus-payoff curve. They are not sources of expected profit on their own.

Early assignment, dividends, and the limits of “defined risk”

Options on individual U.S. stocks and ETFs are generally American-style, so the holder can exercise at any time and a writer can be assigned before expiration. The Options Industry Council notes that deep in-the-money puts are often exercised early and that call writers should watch dividend dates. Two cases matter for iron condors.

A deep in-the-money short put. Suppose XYZ falls to $85 with 10 days left. The 95 put’s European model value is $9.90, below its $10 intrinsic value, and a binomial model of the American-style put values it at exactly $10. In other words, the holder gains nothing by waiting, so immediate exercise is optimal. If assigned, the account buys 100 shares at $95 ($9,500), protected below $90 by the long put. The expiration loss limit still holds in principle. However, the position is now stock plus a long put, which needs cash or margin financing and has a different risk profile.

A short call before an ex-dividend date. Early exercise of an in-the-money call becomes rational when its remaining time value is smaller than the upcoming dividend. The worked example assumed no dividends, so suppose that after entry the company declares a regular $1.00 quarterly dividend that goes ex 10 days before expiration. OCC does not adjust listed options for ordinary dividends; a non-ordinary cash dividend (one outside a regular dividend policy) of $0.125 per share or more would generally trigger an adjustment (SEC Release 34-99641).

The day before the ex-date, XYZ trades at $112. If the stock drops by the dividend to $111, the model values the 105 call at about $6.29, only $0.29 of time value, so the holder exercises for $7.00 of intrinsic value. The account is now short 100 shares at $105, owes the dividend on them, and still holds the 110 call and the put spread.

Assignment does not simply add the dividend to the loss. The ex-date price drop gains the short shares about $1.00, which offsets the dividend owed. Had the call not been exercised, its value would have fallen from about $7.00 to $6.29, a $0.71 gain for the writer. The immediate cost of the assignment, measured at the ex-date, is therefore about $71 per condor in the model: the dividend minus the call’s remaining time value. Measured at expiration, the assignment costs the full $100 whenever XYZ finishes at or above $105 and improves the result whenever XYZ finishes below $104. The outcome depends on how the remaining position is managed (ignoring stock-borrow costs and interest):

• XYZ finishes at or above $110 with everything held: covering the short through the 110 call gives a loss of ($110 − $105) + $1.00 − $1.96 = $4.04 per share. That is $404 instead of the “maximum” $304.
• XYZ falls back: the short shares now profit from a decline, for example +$596 if XYZ finishes at $100.
• The hedge changes: buying the shares back ends the short exposure. Selling the 110 call, or letting it expire while still short, removes the upside cap.

After any assignment, the original maximum loss, maximum profit, and breakevens no longer describe the position, and margin is recalculated on whatever positions remain.

European-style, cash-settled index options such as SPX options can be exercised only at expiration and settle in cash. That removes early assignment and share delivery, but settlement timing carries its own risk, covered next.

Expiration risks: pin risk and after-hours exercise

Three mechanics shape what happens on the final day:

• Exercise by exception. Under OCC’s process, expiring equity and index options that are at least $0.01 in the money are exercised unless contrary instructions are submitted. A brokerage firm’s own threshold may differ (OIC).
• The decision window extends past the close. For standardized equity options, holders have until 5:30 p.m. ET on expiration day to make final exercise decisions, although brokerage firms may set an earlier cut-off (FINRA). After-hours news can therefore lead to exercise of an option that closed slightly out of the money, or abandonment of one that closed slightly in the money.
• Pin risk. If XYZ closes very near $95 or $105, the writer cannot know until after the close whether the short option will be assigned.

The more dangerous case is a broken pair. Suppose XYZ closes at $92. The short 95 put is $3 in the money and will likely be assigned, but the long 90 put expires worthless. The expiration table shows −$104. The account, however, now holds 100 shares bought at $95 with no protective put. If XYZ opens the next trading day at $85, the loss becomes ($95 − $85) − $1.96 = $8.04 per share, or $804. That is well beyond the $304 maximum. According to the OIC, the only way to avoid assignment on a given day is to close the short option before that day’s market close.

Cash-settled index options remove the stock-delivery problem but not timing risk. For AM-settled SPX options, trading ends on the business day before the exercise-settlement value is calculated. Positions held into settlement are therefore exposed to the overnight move with no way to trade the expiring options. PM-settled SPXW options trade on their expiration day (Cboe).

Transaction costs, execution, and margin

Four legs mean four bid-ask spreads and four commissions on entry, and potentially again on exit or adjustment. Suppose each leg fills $0.05 less favorably than the theoretical values used above and the commission is $0.65 per contract (both hypothetical; actual costs vary by broker and market):

• Net credit: $1.96 − 4 × $0.05 = $1.76, plus $2.60 in opening commissions
• Maximum profit: $176.00 − $2.60 = $173.40 (11.5% less than the frictionless figure)
• Maximum loss: $324.00 + $2.60 = $326.60 (7.4% more)
• Breakevens: about $93.27 and $106.73

Because the frictionless trade at theoretical values had a model expected value of about zero, these frictions translate almost one-for-one into an expected cost of about $22.60 per condor, before any closing trades, regulatory fees, or assignment fees. Entering all four legs as a single multi-leg order avoids legging risk, meaning the risk of prices moving between separate fills. Fill quality still depends on the liquidity at each strike, and wide markets in the wings can consume a large share of a small credit.

Margin and capital. For the balanced $5-wide example, four figures are easy to confuse:

• Gross wing width: $5 × 100 = $500, the most the condor can cost to settle at expiration, since only one wing can finish in the money.
• Maximum expiration loss: $500 − $196 credit = $304.
• Cboe minimum requirement: $610. That is $500 from Cboe’s maximum-potential-loss computation, which nets intrinsic values at each strike price with no allowance for premium, plus the $110 cost of the long options, which must be paid in full. The $306 of short-option proceeds may be applied (Cboe Margin Manual).
• Net capital committed: $610 − $306 = $304 under that minimum, equal to the maximum expiration loss.

These are exchange minimums. Brokers may require more, and the calculation changes if the position changes (after a partial assignment, for example), so a given account’s collateral is not necessarily $304. Cboe permits the strategy in a cash account only when all options are European-style, cash-settled, and expire together. Broker policies, not this article, determine what an individual account requires.

How the iron condor compares with nearby neutral strategies

Key takeaways

• A short iron condor’s expiration P&L depends only on the four strikes and the net credit. It earns the maximum profit between the short strikes and is profitable between the breakevens. Maximum loss = wider wing width − credit; lower breakeven = short put strike − credit; upper breakeven = short call strike + credit. Each breakeven exists only if the credit is smaller than that side’s wing width.
• Before expiration, P&L is driven by price, time, and implied volatility together. Gains arrive late, early moves are muted, and sensitivity to price near the short strikes rises as expiration approaches.
• Theta and vega change sign near the long strikes. “Benefits from time decay and falling volatility” holds only while the underlying is well inside the wings.
• A higher probability of profit is paid for with a smaller credit and a larger maximum loss. Under the pricing model, the expected value is roughly zero before costs, and costs reduce it further.
• “Defined risk” is a statement about expiration with all legs intact. Early assignment, dividends, pin risk, after-hours exercise decisions, and settlement timing can all produce losses beyond the formula.

Primary sources

• Options Clearing Corporation: Characteristics and Risks of Standardized Options · Interpretative guidance on contract adjustments for cash dividends (SEC Release 34-99641)
• Options Industry Council: Exercising Options · Options Exercise FAQ · Volatility Skew and Options: An Overview
• FINRA: Exercise Cut-Off Time for Expiring Options
• Cboe: Margin Manual · SPX Options · SPX Options Product Specifications
• Black, F., and Scholes, M. (1973). The Pricing of Options and Corporate Liabilities. Journal of Political Economy, 81(3), 637–654.
• Merton, R. C. (1973). Theory of Rational Option Pricing. Bell Journal of Economics and Management Science, 4(1), 141–183.