Iron Butterfly: Setup and Mechanics
The iron condor's tighter cousin. Pull both short strikes in to the current price and you collect a much bigger credit, in exchange for a smaller target to hit. Here is how it works.
- How an iron butterfly pulls the condor's strikes to the center
- Why it pays a much bigger credit for a tighter target
- Your max profit, max loss, and two breakevens
- How to choose between a condor and a butterfly
Last lesson's iron condor had a wide, comfortable win zone, but the payout was small. Just $160 for tying up a few hundred in risk. Some traders look at that and think, "I want a bigger credit. I am willing to aim more carefully for it."
Here is how you get it. Take the condor and pull both short strikes all the way in to the current price. The closer you sell to where the stock actually is, the more premium you collect. Pull them all the way to the center and you have built an iron butterfly.
Pull the Body to the Center
Apple is at $200. Instead of selling a put down at $190 and a call up at $210 like the condor did, you sell both right at $200, the current price.
You sell the $200 call and the $200 put together. Selling at the money pays richly: $5 each, so $10 a share collected. That pair is your body.
Then you buy your wings for protection, just like before: the $190 put and the $210 call, $1.30 each, so $2.60 a share. After that cost, you keep a net credit of $7.40 a share, $740 for the contract.
Notice the body is just a call and a put sold at the same strike. Sold together like that, the pair is called a straddle, and it is the richest premium on the board, because you are selling the two most valuable options there are. The wings cap your risk, exactly as they did in the condor.
A Bigger Credit for a Tighter Target
The condor gave you a flat-topped win zone, a whole range where you collected the max. The butterfly does not. Because both options you sold sit at $200, you collect the full credit only if Apple finishes right at $200. Away from that center, the profit slides down to a peak instead of a plateau.
Your max profit is the credit: $740, at exactly $200. Both options you sold expire worthless only if Apple pins the center.
Your max loss is one wing minus the credit: $260. The wings are $10 wide, and you keep $7.40, so the most you can lose is $2.60 a share, $260.
Your breakevens are the center plus and minus the credit: $192.60 and $207.40. Anywhere in that band, you still come out ahead. That is wider than people expect, because the fat credit buys a lot of room.
See the tent shape? A sharp peak at $200 instead of the condor's flat table-top. That peak is the price of the bigger credit: more money, but you have to land closer to the center to collect all of it.
Condor or Butterfly?
They are two settings of the same neutral idea. The condor spreads out for safety; the butterfly tightens up for income. Here they are side by side, on the same stock.
The honest tradeoff: the butterfly's bigger credit is tempting, but a flat table-top is much easier to land on than a single peak. Most traders reach for the condor when they just want "somewhere in this range," and the butterfly when they have a strong view that a stock pins a specific level.
When I was advising clients, I always told them the butterfly is the trade for conviction. If you truly believe a stock is stuck at a number, it pays beautifully. If you only believe it will be "around there somewhere," the condor lets you breathe.
When an Iron Butterfly Fits
- You have a strong view the stock pins a specific price
- You want the biggest credit a neutral trade can pay
- Option prices are rich, fattening the credit further
- You are willing to manage it as the stock drifts
- You only expect a loose range (the condor is calmer)
- A big move in either direction is likely
- You cannot keep an eye on the trade as it moves
- An iron butterfly sells a call and a put at the same center strike, with protective wings.
- Selling at the money pays a large credit, here $740, four times the condor's.
- Your max profit ($740) comes only if the stock pins the center strike.
- Your max loss is one wing minus the credit, $260, the smallest of the neutral trades.
- Use a butterfly for a pinned price, a condor for a loose range.
Pop Quiz
Three quick questions to lock it in. Pick an answer and the explanation shows up right away.
Where does an iron butterfly sell its two options?
You sell a call and a put at the same at-the-money strike. Selling right at the price is what pays the big $740 credit.
Why does the butterfly pay so much more than the condor?
At-the-money options carry the most premium, so selling them pays the most. The tradeoff is a narrow target: full profit only near the center strike.
Wings are $10 wide and you collected $740. What is your max loss?
One $10 wing minus the $7.40 credit leaves $2.60 a share, or $260. That small max loss is the upside of collecting such a big credit.
Bottom Line
An iron butterfly is the iron condor with its strikes pulled to the center. You sell both options right at the price, collect a fat credit, and aim for the stock to finish near that center strike. Bigger reward, tighter target. When you have real conviction about where a stock will land, this is the trade that pays you for it.
Next up: Calendar Spreads. So far every spread used one expiration date. Next we add a second. Calendar spreads sell a fast-decaying near-term option and own a slower far-term one, turning time itself into the trade.