Long Call
Butterfly
A low-cost tent trade that peaks at a single target strike — put a small debit at risk for a high reward-to-cost ratio if the market pins exactly where you expect.
What is a long call butterfly?
A long call butterfly is a three-strike, four-leg options strategy built entirely with call options. You buy one lower-strike call, sell two middle-strike calls, and buy one higher-strike call — all sharing the same expiry, with the strikes equally spaced. The two sold middle calls fund the two bought outer calls, leaving you with a small net debit. That debit is the most you can ever lose, making this a strictly defined-risk strategy.
The payoff profile resembles a tent or butterfly wing: flat and small below the lower strike, rising to a sharp peak at the middle strike, then falling back to flat above the upper strike. The strategy suits a trader who has a precise view on where the underlying will settle at expiry — in India F&O, many traders use max pain analysis or support/resistance levels to pick the middle strike, aiming for the NSE weekly expiry cycle where theta accelerates in the final few days.
Key takeaways
- The strategy requires a precise price target — max profit is earned only if the underlying expires exactly at the middle strike.
- Max loss is the net debit paid, which occurs if the underlying moves far beyond either outer strike.
- The profit zone is narrow but the reward-to-cost ratio can be very high, often 5:1 or better on well-placed butterflies.
- With four legs and three strikes, execution discipline matters — leg in carefully to avoid slippage.
- Time decay (theta) helps as expiry nears if price is already close to the middle strike.
How it works
Think of the long call butterfly as combining a bull call spread and a bear call spread that share the middle strike. The lower bull spread gains when price rises toward the middle; the upper bear spread starts losing when price exceeds the middle. Those gains and losses offset precisely, capping both the maximum profit and maximum loss. The result is a clean, symmetric tent shape with two breakeven points flanking the middle strike.
In practice, NSE butterfly traders most commonly use weekly NIFTY or Bank Nifty options. The strategy works best when implied volatility is elevated (fattening the premium you receive on the two sold middle calls) and when you have a high-conviction price target. Entering the trade early in the expiry week and riding theta into expiry is a common approach among experienced F&O traders on NSE.
The numbers that matter
Worked NIFTY example
Suppose NIFTY is near 22,500 and you expect it to pin at 22,500 into Thursday weekly expiry. You enter the following trade (illustrative premiums only):
- Buy 1 lot 22,400 call at ₹160.
- Sell 2 lots 22,500 call at ₹100 each (collect ₹200 total).
- Buy 1 lot 22,600 call at ₹55.
- Net debit: (160 + 55) − 200 = ₹15 per unit, or ₹15 × 75 = ₹1,125 per lot set.
| NIFTY at expiry | P&L per unit | P&L (lot set ×75) |
|---|---|---|
| 22,300 (below lower) | −₹15 | −₹1,125 |
| 22,415 (lower breakeven) | ₹0 | ₹0 |
| 22,500 (peak) | +₹85 | +₹6,375 |
| 22,585 (upper breakeven) | ₹0 | ₹0 |
| 22,700 (above upper) | −₹15 | −₹1,125 |
Notice the risk-reward: you risk ₹1,125 to potentially earn ₹6,375 — roughly a 5.7:1 ratio. The catch is that you need NIFTY to settle within a 170-point corridor around 22,500 just to avoid losing the debit, and precisely at 22,500 to hit the peak.
When to use it
- You have a high-conviction price target and low directional uncertainty into expiry.
- Implied volatility is elevated, making the two sold middle calls richer and reducing your net debit.
- You want a low absolute cost trade — the butterfly's small debit caps the damage on a wrong call.
- You are trading the final days of an NSE weekly expiry where theta accelerates and the pinning effect is strongest.
Risks to respect
- Narrow profit zone: even a modest move away from the middle strike can erode most of the potential gain quickly.
- Four legs mean four bid-ask spreads — slippage on entry and exit can materially reduce the attractiveness of a small-debit trade.
- Early exit complexity: unwinding all four legs simultaneously at fair prices is harder mid-trade than it looks on a payoff diagram.
- IV crush can hurt if entered early: a fall in implied volatility before expiry reduces the value of all options, which can work against you if you need to exit before expiry.
Long call butterfly vs iron condor
Both are neutral, defined-risk strategies, but they target different market conditions. A long call butterfly bets on a precise pin at a single strike — its profit tent is narrow and peaked. An iron condor uses four strikes and profits from a wider range between two outer boundaries, with a flat maximum profit plateau rather than a single peak. If you have a specific price target, the butterfly can offer a better reward-to-cost ratio; if you just want to sell volatility in a range, the condor is more forgiving.
Long call butterfly vs long straddle
A long straddle is the directional opposite in spirit: it profits from a large move in either direction and loses if price stays near the strike. A long call butterfly does the reverse — it profits from price staying near the strike and loses if price moves far away. Both have defined risk equal to the net debit (straddle) or net debit (butterfly), but the butterfly is almost always cheaper to enter. Choose the butterfly when you want to sell volatility cheaply; choose the straddle when you expect a breakout.
Frequently asked questions
When does a long call butterfly make money?
It profits when the underlying expires near the middle strike at expiry. Maximum profit occurs exactly at the middle strike; the position loses a capped amount equal to the net debit if price moves far beyond either outer strike.
What is the maximum loss on a long call butterfly?
The maximum loss is limited to the net debit paid to enter the trade. This occurs if the underlying expires below the lowest strike or above the highest strike at expiry.
How many legs does a long call butterfly have?
Four legs across three strikes: buy 1 lower-strike call, sell 2 middle-strike calls, and buy 1 higher-strike call. All options share the same expiry and the strikes are typically equally spaced.
What is the difference between a butterfly and an iron condor?
A long call butterfly profits from a precise pin at the middle strike — its tent is narrow and peaked. An iron condor profits from a wider price range between two outer boundaries, with a flat maximum profit plateau. The condor is more forgiving; the butterfly has a higher reward-to-cost ratio when you have a precise target.
The bottom line
The long call butterfly is one of the most capital-efficient neutral strategies available in NSE F&O: a small debit funds a potential reward that can be five times or more that cost if you nail the target. The discipline required is the trade-off — you need a precise price forecast and careful execution across four legs. For traders who study max pain, support/resistance and options open interest concentrations to identify pinning levels, this strategy rewards that analytical work with an asymmetric payoff.
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Related strategies & terms
- Iron Condor — a wider, flat-topped range play using both calls and puts.
- Iron Butterfly — similar tent shape but built with both calls and puts at the middle strike.
- Long Straddle — the payoff opposite: profits from a big move away from the strike.
- Max Pain · Defined Risk · Breakeven · Theta