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Iron Butterfly

Neutral4 legscreditneutral

A short straddle with wings. The iron condor's tighter cousin — a bigger credit for a narrower range, with both tails still capped.

The Strategy Builder does not construct this one — the reference shelf is broader than the picker. You can still build it by hand: add the legs below in the builder's leg table.

What it is

Sell the at-the-money call and put, buy a wing above and below. It is a short straddle with defined risk, or equally an iron condor whose short strikes have been pulled together to the same price.

The credit is much larger than a condor's on the same wings, because at-the-money options are the expensive ones. The trade-off is that the profitable range collapses from a plateau to a peak.

Both tails are capped by the wings, so unlike the short straddle it has a maximum loss that can actually be stated.

How it is built

Priced off the guide's shared chain, on a $50 stock. Every figure beneath the diagram is computed from these legs by the same engine the Strategy Builder uses.

ActionWhatStrikeQtyPrice
Sellput$501$2.60
Sellcall$501$2.80
Buyput$451$1.50
Buycall$551$1.20
$0$45$50$55now $50$47.30$52.70stock price at expiryprofit / loss
Max profit
$270
Max loss
−$230
Break-evens
$47.30 / $52.70
Net credit
$270

Collateral held: $500 — the gross amount tied up, before the premium received.

Both $50 options sold, both $5-wide wings bought, for $2.70 of net credit. A tent rather than a plateau: peak profit exactly at $50, sloping away on both sides, capped at both wings. Compare the iron condor on the same chain — half the credit, but a flat top rather than a point.

Reading the shape

A tent. Maximum profit at exactly the short strike, falling away linearly in both directions.

Two break-evens, at the short strike plus and minus the net credit.

Flat maximum loss beyond each wing: the width less the credit.

How it is used

It suits a strong expectation that a stock finishes near a specific price — a pin — rather than merely inside a range.

Against the iron condor the choice is credit versus width of the profitable zone. The butterfly pays roughly twice as much and requires the stock to land far more precisely.

Four legs and four sets of costs, and the short strikes sit at the money where they are most sensitive to movement. It is the most execution-sensitive structure in this chapter.

Run the iron condor on the same wings and compare. If the range you actually believe in is wider than a point, the condor is expressing the view you hold.
Maximum profit requires a near-exact landing. In practice the realistic outcome is a partial one, and the structure's headline credit overstates what usually gets kept.
At-the-money short options carry the most gamma, so the position reprices faster than any condor as expiry approaches.

Like everything in this guide, these are descriptions of structures and conditions — context for your own decisions, not instructions to trade.