Iron Condor: The Complete Guide to Selling Range-Bound Options
The iron condor is the professional trader's workhorse — a four-leg options strategy that profits when markets stay quiet. Learn how to build one, price it correctly, and manage it like a pro.
- 1
Sell an OTM Call and an OTM Put
Choose strikes outside the current price — typically at the 15–20 delta level on each side. You collect premium on both. This credit goes into your account immediately.
- 2
Buy a further OTM Call and Put to cap your risk
Purchase cheaper options beyond each short strike. These define your maximum loss and turn the naked short strangle into a defined-risk iron condor.
- 3
Maximum profit if the underlying stays between your short strikes
If the price of the underlying closes between your short put and short call at expiry, all four options expire worthless and you keep the full net premium collected.
- 4
Maximum loss if the underlying moves beyond either long strike
If price breaks through a long strike, you lose the wing width minus the premium collected. Your loss is fixed — you cannot lose more than this no matter how far price moves.
When to Use This Strategy
A Short Iron Condor is a non-directional, premium-selling strategy. Use it when you expect the underlying to stay within a defined price range through expiry — sideways or mildly volatile markets. It thrives in high implied volatility (IV) environments where you can sell rich premium and collect a larger credit. Avoid it before earnings, central bank decisions, or any binary event that can cause a sudden gap move.
The Numbers: Max Profit, Max Loss, Break-Even
What Is an Iron Condor?
An iron condor is a non-directional options strategy built from four options contracts on the same underlying asset and expiry. It combines two vertical spreads: a bear call spread above the current price and a bull put spread below it. The result is a defined-risk, defined-reward trade that collects premium and profits if the underlying asset stays within a specific price range until expiry.
The strategy is named for the shape of its profit/loss diagram — wide wings above and below, a flat profit zone in the middle, and steep losses only at the extremes. Professional traders and market makers use iron condors extensively because they monetize one of the most reliable phenomena in options markets: implied volatility is almost always priced higher than realised volatility.
Core Logic
You are selling fear. Options buyers pay a premium for protection. As a condor seller, you collect that premium and keep it if the market does not move dramatically. Your edge is statistical — roughly 68% of price moves land within one standard deviation of the current price.
The Four Legs Explained
To construct an iron condor on an index trading at a round number, you might structure the four legs as follows:
| Leg | Action | Strike | Role |
|---|---|---|---|
| 1 | Buy 1 Put | 21,400 | Defines max loss on downside |
| 2 | Sell 1 Put | 21,600 | Collects premium, forms lower wing |
| 3 | Sell 1 Call | 22,400 | Collects premium, forms upper wing |
| 4 | Buy 1 Call | 22,600 | Defines max loss on upside |
The 21,600–22,400 range is your profit zone. The 200-point wings on each side cap your maximum loss. If the index stays inside 21,600–22,400 through expiry, you keep the entire net premium collected.
Profit, Loss, and Break-Even
- Net premium received = (premium from short put) + (premium from short call) − (cost of long put) − (cost of long call)
- Max profit = net premium received (if underlying closes between short strikes at expiry)
- Max loss = spread width − net premium received (if underlying closes beyond either long strike)
- Upper break-even = short call strike + net premium
- Lower break-even = short put strike − net premium
Worked Example
Sell $95 Put for $2.00. Buy $90 Put for $0.75. Sell $105 Call for $2.25. Buy $110 Call for $0.75. Net credit = $2.00 + $2.25 − $0.75 − $0.75 = $2.75. Max loss = $5.00 − $2.75 = $2.25. Break-evens: $92.25 on downside, $107.75 on upside. On a 7-day expiry, the probability of staying inside that range is approximately 72%.
Choosing the Right Strikes
Strike selection is the single biggest factor in an iron condor's expected value. There are three common frameworks:
1. Delta-Based Placement
The most systematic method. Sell the short strikes at approximately 15–20 delta on each side. At 16 delta, each short strike has a roughly 84% probability of expiring out-of-the-money. This is the standard 'one standard deviation' condor used by institutional traders.
2. Technical Level Placement
Place short strikes just beyond strong support and resistance zones. If the index has major support at 21,700 and resistance at 22,350, sell the 21,600 put and 22,400 call — just outside the technical boundaries. This combines statistical probability with market structure awareness.
3. Round-Number / Expiry Gravity
For weekly options, market makers concentrate open interest at round numbers. Selling strikes at psychological levels (round numbers like 100, 105, 110) gives your short strikes additional pinning probability as market makers defend those levels into expiry.
Best Practice
Combine all three: find strikes near the 16-delta line that also align with key technical levels. When both the probability model and the chart agree on the same strike, you have the strongest possible placement.
When to Enter: Implied Volatility Is Everything
Iron condors only make sense when options are expensive relative to their history. The key metric is Implied Volatility Rank (IVR) — where current IV sits within its 52-week range. An IVR of 0 means IV is at a 52-week low; an IVR of 100 means it is at its yearly high.
| IVR | Interpretation | Recommended Action |
|---|---|---|
| 0–20 | Options cheap — low premium available | Avoid condors; consider debit spreads instead |
| 20–40 | Fair value — moderate opportunity | Consider condors with tighter wings |
| 40–60 | Elevated — good condor environment | Standard entry zone for full-size positions |
| 60+ | Spiked — high premium but a reason exists | Enter with caution; check for news catalyst first |
Catalyst Rule
Never enter an iron condor before a known high-impact event — earnings, central bank or Fed policy decisions, CPI/inflation data releases. A single news event can blow through both wings within minutes of the announcement.
Expiry Selection and Theta Decay
Theta decay — the gradual erosion of option time value — is the engine of this strategy. Theta accelerates sharply in the final 30 days before expiry, which is why most premium sellers target 30–45 DTE for entry.
- 0–7 DTE (weekly options): Very high theta but extreme gamma risk. Small intraday moves cause outsized P&L swings. Suitable only for experienced traders with active monitoring.
- 21–45 DTE: The professional sweet spot. Enough premium to justify the trade, theta is accelerating, and there is time to adjust if the market moves against you.
- 60+ DTE: Premium is richer but theta is slow. Ties up margin capital for longer. Better reserved for very high-IV environments.
Trade Management: Where Profits Are Made or Lost
Take Profit at 50%
Research consistently shows that closing condors at 50% of max profit dramatically improves long-term risk-adjusted returns. If you collected 85 points, close the trade when you can buy it back for 42. You capture the bulk of the gain in roughly half the time and free capital for a new trade.
The 21-Day Exit Rule
If the trade has not reached your profit target and you reach 21 DTE, close it regardless of P&L. Gamma risk increases sharply in the final three weeks. The remaining premium does not justify the danger of a sudden move.
Rolling a Threatened Wing
If the underlying approaches one of your short strikes, you can 'roll' that spread: close the threatened side and reopen it further out-of-the-money, usually for a small net credit. Only roll if you can do so for a credit — never for a debit. Roll only once; if the trade is threatened again, accept the loss and close entirely.
The Most Common Mistake
Never add more contracts to a losing condor to 'average down.' The instinct to recover losses by doubling position size is the fastest way to blow up a trading account. Stick to your maximum loss limit, take the loss, and move on.
Iron Condor vs. Related Strategies
| Strategy | Structure | Risk Profile | Best Market Condition |
|---|---|---|---|
| Iron Condor | 4 legs — two OTM spreads | Defined risk both sides | Low-to-moderate movement expected |
| Iron Butterfly | 4 legs — ATM short strikes | Defined risk, narrow zone | Expect no movement at all |
| Short Strangle | 2 legs — naked OTM shorts | Unlimited risk | High IV, experience required |
| Credit Spread | 2 legs — one spread only | Defined risk one side | Directional bias with defined risk |
Applying This to Your Market
The principles below apply to any liquid index or equity options market:
- Lot sizes: the index lot is currently 75 units, a banking sector index is 30 units (verify current your local financial regulator-mandated sizes before trading as they change periodically).
- Settlement: check whether your market uses European-style (cash settled, no early assignment) or American-style options — the difference affects how you manage positions near expiry.
- Weekly expiry creates a reliable rhythm. Institutional players typically roll positions the day before expiry.
- central bank meetings (scheduled periodically) and fiscal budget day day are the highest-risk sessions for any short-volatility strategy. Close all condors before these events.
Position Sizing: The Foundation of Long-Term Survival
Risk no more than 2–5% of your total trading capital on a single iron condor position. On a $50,000 account that is $1,000–$2,500 per trade. If your condor's max loss is $500 per contract, trade two contracts. Never increase size simply to generate larger premium income — that is how traders blow up.
Risk Disclosure
Options trading involves substantial risk of loss and is not suitable for all investors. Past performance does not guarantee future results. All examples on this page are for educational purposes only and do not constitute investment advice. Consult a licensed financial advisor before trading.
Key Takeaways
- An iron condor profits when the underlying stays between your two short strikes at expiry.
- Max profit = net premium received. Max loss = spread width minus premium received.
- Probability of profit is typically 60–75% at standard strike distances.
- Manage winners early — close at 50% of max profit to reduce time in trade.
- Implied volatility rank (IVR) above 30 is the primary entry signal.
- Always define your position size: risk no more than 2–5% of portfolio per trade.