Iron Condor vs Iron Butterfly
An iron condor sells a put spread and a call spread with a gap between the short strikes, creating a wide profitable range. An iron butterfly sells both at the same strike, which collects more premium and narrows the profitable range to a point.
These are usually taught as two strategies and they are one structure with a dial on it. Both sell a put spread and a call spread; the only question is whether the two short strikes sit apart or on top of each other.
What each one is
An iron condor sells a put spread below the price and a call spread above it, leaving a gap between the short strikes where price can sit. Iron condor covers the four legs.
An iron butterfly does the same with both short strikes at the same price, which removes the gap. Iron butterfly covers it, and credit spread covers the two-leg building block both are made of.
One structure, one dial. Whereas the names suggest different ideas, moving the short strikes together converts a condor into a butterfly continuously — there is no boundary between them, only a spectrum of width.
Where they differ
How wide the profitable range is. The condor gives price room — anywhere between the short strikes keeps the full credit. The butterfly’s maximum profit occurs at exactly one price, and falls away in both directions from there.
How much premium arrives. The butterfly’s short options are at the money, so they carry the most time value and the credit is larger. The condor’s are further out and cheaper, so the credit is smaller — that is the payment for the wider zone.
What forecast each requires. A condor needs you to be right that price stays within a range — a statement about volatility. A butterfly needs you to be right about roughly where price finishes, which is a directional forecast as well.
Where the worst case sits. For both it is a finish beyond the long strikes. The maximum loss is defined in each case, and the butterfly’s larger credit means a smaller net loss at the wings for the same strike widths.
Where they agree
Both are short volatility. Each wants stillness, and both lose value when expected movement rises even if price has not gone anywhere yet.
Both have defined risk. The long options cap the loss, which is the entire reason to use these rather than selling options naked.
Both are four-leg structures. That means four bid-ask spreads at entry and potentially four at exit, which is a real cost in an illiquid chain.
And both are hurt by the same thing — a large move in either direction, which on this site’s shared series happens on the bars where range reaches the p90 of 1.101 or the maximum of 2.338.
Which one to use
Use a condor when your view is only that nothing much will happen. If you cannot say where price will finish, paying for a wide zone is exactly right and the smaller credit is the cost of not knowing.
Use a butterfly when you have a specific level in mind. A pin near a large open interest strike, or a level you expect price to gravitate to — that is a real view, and the butterfly pays more for it.
Use a condor when you cannot watch the position. The wider zone means fewer situations in which a modest move requires a decision.
And use neither in a chain with wide spreads. Four legs means the bid-ask is paid four times, which can consume a substantial share of the credit before anything happens.
Why the dial framing is more useful than the names
Because it exposes the actual trade-off. Every step you move the short strikes closer collects more premium and narrows the range that keeps it. There is no free version, and seeing it as one continuous choice stops the two names from implying that a different judgement is involved.
And because it clarifies what you are actually forecasting. Wide means you are forecasting calm; narrow means you are forecasting a destination, which is a stronger claim and priced as one.
The original data
Of the 24,971 videos in the search corpus, no title compares these two directly. Iron condors appear in 5 videos at a median of 5,660 views across 5 channels. Iron butterflies appear in 1 video, at 27,675 views.
One video on iron butterflies, in a corpus of 24,971. The entire defined-risk neutral category is covered by six videos, and the single butterfly video draws nearly five times the audience of the average condor one — which is the shape of a subject nobody has bothered to cover properly.
On the chart above the confidence level chooses the structure. Vaguely calm is a condor; specifically here is a butterfly, and pretending to the second when you mean the first is how the narrow zone gets missed.
When it fails
The characteristic failure is choosing the butterfly for its larger credit without having a price forecast. The bigger premium is visible on the ticket and the narrower profitable range is not, so the structure gets picked for the number rather than for the view — and then price drifts a modest distance, which a condor would have absorbed comfortably, and the position is at a loss. The extra credit was payment for a precision the trader never actually claimed to have, and it is collected in advance while the requirement only becomes apparent later.
A second failure is adjusting a losing side and doubling the risk. Rolling one spread out often converts a defined-risk position into something with more exposure than it started with.
A third is trading four legs in an illiquid chain, where the spreads consume much of the credit.
A fourth is holding through an event that raises implied volatility, which hurts both immediately.
And a fifth is treating the defined maximum loss as unlikely rather than as the number to size from.
Related
Iron condor covers the wide four-leg structure. Iron butterfly covers the version with the short strikes together. And credit spread covers the two-leg block both are assembled from.
Once you see that a butterfly is a condor with the middle strikes collapsed together, the choice stops being between two strategies and becomes a single dial: how wide a range do you want, and how much premium will you accept for it.
— Michael Whitman
This page is educational, not financial advice. Test every idea on your own charts before risking money.