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Long Butterfly

Neutral3 legsdebitneutral

Buy one call, sell two above it, buy one above that. A cheap, precise bet that a stock lands on a particular price.

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

Three strikes, four contracts: long the wings, short twice the middle. The debit is small because the two short middles pay for most of the long wings.

It is the debit mirror of the iron butterfly — same tent shape, but paid for rather than collected, and peaking where you want the stock to land rather than where you don't.

Maximum loss is the debit, which on the example is a fraction of the maximum gain. That ratio is why butterflies attract attention.

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
Buycall$501$2.80
Sellcall$552$1.20
Buycall$601$0.45
$0$50$55$60now $50$50.85$59.15stock price at expiryprofit / loss
Max profit
$415
Max loss
−$85
Break-evens
$50.85 / $59.15
Net debit
$85

Collateral held: $85 — the gross amount tied up, before the premium received.

A $50 call bought, two $55 calls sold, a $60 call bought — an $0.85 debit for a structure that pays up to $4.15 if the stock lands on $55. The reward-to-cost ratio is the appeal; the narrow peak is the catch.

Reading the shape

Flat at the debit loss below the lower wing and above the upper one.

A peak at the middle strike, where the long lower call is deep in the money and the shorts expire worthless.

Two break-evens, close either side of the peak.

How it is used

It suits a specific price target on a specific date — a pin, an expected settlement level, a strike with heavy open interest.

The favourable risk-reward is real but the probability is correspondingly low. A structure paying five to one wins roughly that rarely.

Lower implied volatility makes it cheaper, like every debit structure.

Butterflies are usually a statement about a date as much as a price. Without a reason the stock should be at that strike on that day, the structure has no thesis.
The profitable zone is narrow and the peak only materializes at expiry. Held earlier, the position is worth far less than the diagram's peak suggests.
Three strikes and an unbalanced quantity make this the easiest structure here to mis-enter. The middle leg is two contracts, not one.

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