If you want to be short volatility into earnings without the unlimited risk of a naked strangle, two defined-risk structures dominate: the iron condor and the iron butterfly. Both profit from IV crush and a contained move, and both cap your worst case with long “wings.”
How each one is built
- Iron condor: sell an OTM put spread + sell an OTM call spread. You collect premium and win if the stock finishes between the two short strikes.
- Iron butterfly: sell an ATM call + ATM put (the body) and buy OTM wings. Same idea, but the short strikes sit right at the money.
Side-by-side comparison
| Factor | Iron condor | Iron butterfly |
|---|---|---|
| Short strikes | Two separate OTM strikes | Both at the money |
| Premium collected | Lower | Higher |
| Profit zone | Wide | Narrow |
| Max profit location | Anywhere between shorts | Exactly at the strike |
| Max loss | Defined (width − credit) | Defined (width − credit) |
| Best when | You expect a quiet, contained move | You expect very little movement and want max premium |
The risk you’re taking
Both structures are short the move: they lose when earnings produce a gap larger than your short strikes. The wings cap that loss, but the loss can still be several times the credit you collected. The whole game is choosing strikes so your breakevens sit beyond a high percentile of the stock’s past earnings moves.
When to use each
- Iron condor — you expect a contained move but want a buffer on both sides; you’ll collect less but have a wider margin for error.
- Iron butterfly — you expect the stock to barely move and want maximum premium; the trade-off is a narrow profit zone that punishes any real move.
- Inverse butterfly (long vol) — flip it: a long straddle with short wings keeps an upside-on-a-big-move thesis while cutting cost. Covered in our strategies overview.
Frequently asked questions
What is an iron condor?
An iron condor sells an out-of-the-money put spread and an out-of-the-money call spread at the same time. It collects premium and profits if the stock stays between the short strikes, with a defined maximum loss capped by the long wings.
What is the difference between an iron condor and an iron butterfly?
An iron butterfly sells the call and put at the same at-the-money strike, while an iron condor sells them at separate out-of-the-money strikes. The butterfly collects more premium but has a narrow profit zone; the condor collects less but has a wider profit zone.
Are iron condors good for earnings?
They can be, because they are defined-risk and benefit from IV crush. The risk is that earnings produce a move larger than the short strikes. They work best on names whose actual moves tend to stay inside the implied move, with strikes set beyond a high percentile of past moves.