Iron Condor

What it is and when to use it

An iron condor is a bet that price will NOT move much. It is built from four legs of the same expiry: sell a put below the market and buy another further below, sell a call above and buy another further above. The two short legs collect; the two long legs cost money and exist to cap the loss. The net is a credit that lands in the account the day you open it.

The moment to use it is not "when the market is quiet", which is the most widespread mistake, but when implied volatility is HIGH against its own history and you expect it to fall. A condor is short vega: it profits when implied volatility drops, because the options you sold are worth less. Opening one with implied volatility on the floor is collecting little for the same risk, and it leaves the door open for volatility to rise and the position to lose even if price never moves.

It is also not an "income" strategy. Its distribution of outcomes is many small wins and a few large losses: with short strikes at 16 delta, the trade wins roughly two times in three and when it loses, it loses two or three times what it wins. Profitability depends on managing the ones that go wrong, not on getting the ones that go right.

How it is built

Four legs, one expiry, and both wings the same distance from their short leg. That symmetry is not cosmetic: if one wing is wider than the other, the maximum loss on that side is larger and the position stops being neutral even though the diagram still looks it.

• Sell 1 out-of-the-money put — the leg that defines your floor. Between 0.15 and 0.20 delta in common practice.
• Buy 1 put further down — the wing that caps the loss below.
• Sell 1 out-of-the-money call — your ceiling, at a delta similar to the short put.
• Buy 1 call further up — the wing that caps the loss above.

Strikes are chosen by delta, not by distance in points. An option’s delta approximates its probability of finishing in the money, so selling 0.16 delta on both sides is what makes the position genuinely symmetric in probability, which is what matters.

A full worked example

SPY at 580.00 with 45 days to expiry. Premiums from a Black-Scholes model with a 4.2% risk-free rate, a 1.2% dividend yield and a 15% base implied volatility with skew: these are model premiums, not market quotes, and with those inputs anyone can reproduce them.

Net credit = 2.85 × 100 = $285, with $715 of maximum risk.

Both spreads are 10 points wide. The $285 credit is the most the position can make; the maximum loss is the width minus the credit, (10 − 2.85) × 100 = $715, and it is only reached if price finishes below 545 or above 620.

Maximum profit, maximum loss and break-evens

The band between the two break-evens is 60.70 points, 10.5% of the underlying. Put another way: SPY can fall 4.8% or rise 5.7% in 45 days and the position still does not lose money.

• Maximum profit = net credit received = $285. Reached with price anywhere between 555 and 610 at expiry, where all four legs expire worthless.
• Maximum loss = (spread width − credit) × 100 = (10 − 2.85) × 100 = $715.
• Downside break-even = short put strike − credit = 555 − 2.85 = 552.15.
• Upside break-even = short call strike + credit = 610 + 2.85 = 612.85.

Look at the ratio: $715 risked to make $285, that is 2.5 to 1 against. That is the deal in every premium-selling strategy, and the reason the hit rate has to be high for it to pay. At this ratio you need to be right more than 71.5% of the time just to break even before commissions.

The position Greeks

All four legs add up. These figures are per contract of the combined position, already multiplied by 100:

Negative gamma is what explains why this position is managed rather than left alone. While price sits in the middle, positive theta adds up quietly; as soon as price approaches a short leg, gamma makes delta deteriorate faster and faster, and in the final week that deterioration is brutal.

Management: when to close, when to roll

A condor is not held to expiry. All the profit left in the final days is worth far less than the gamma risk you have to carry to collect it.

Close at 50% of the credit

Buying the condor back when it is worth half what you sold it for — here, at 1.43 — captures half the profit in well under half the time, and removes the stretch where gamma does the most damage. It is the management rule with the most empirical support in all of premium selling.

Get out at 21 days to expiry

Whatever price is doing. From there gamma grows faster than theta contributes, and the position’s risk profile stops resembling the one you accepted when you opened it.

If price breaks a wing

Close the threatened side or roll that half out and away — never both halves. Rolling the good side toward price to "collect more" is increasing risk exactly when the position is telling you that you read it wrong.

Do not average in

Opening a second condor to offset the first doubles exposure to a move that is already happening. If the thesis was the range and the range has broken, the thesis was false.

Common mistakes

Opening it with implied volatility low

This is the mistake that quietly costs the most. With implied volatility at lows you collect little premium for exactly the same risk, and the position ends up short vega at the worst possible moment: implied volatility can only go up from there.

Picking strikes by points instead of delta

Placing the legs "30 points either side" gives a position that is asymmetric in probability, because the volatility skew makes puts at equal distance both dearer and likelier than calls. Selling 0.16 delta on both sides is symmetric.

Holding to expiry to squeeze the last dollar

The final days contribute a small fraction of the credit and concentrate most of the gamma risk. It is the worst risk-for-reward trade in the position’s whole life.

Opening it over a scheduled event

Earnings or a rate decision inside the life of the position turns a bet on a range into a binary bet. Implied volatility already reflects it in the premium, so that extra credit is not a bargain: it is the price of the event.