Butterfly Spread
A low-cost, defined-risk strategy that profits from minimal price movement around a target strike.
The butterfly spread is a three-strike, four-leg options strategy that combines a bull spread and a bear spread sharing a middle strike. The classic 1:2:1 butterfly buys 1 lower-strike, sells 2 middle-strike, and buys 1 higher-strike option. Quintal Mind provides real-time butterfly calculations across multiple ratios including 1:2:1, 1:3:2, 1:4:3, 1:5:4, and 2:5:3.
Strategy Structure
Buy 1 lower-strike Call + Sell 2 middle-strike Calls + Buy 1 upper-strike Call (equidistant strikes).
Profit & Loss Profile
Market Outlook
Neutral — expecting the underlying to expire at or very near the middle strike.
When to Use
- You expect price to pin at a specific level (common on expiry)
- You want a high reward-to-risk ratio with defined risk
- Premium selling strategies are too capital intensive
- You want to express a precise price view cheaply
When to Avoid
- When you expect large moves in either direction
- In high-IV environments (butterflies become expensive)
- Far from expiry (low gamma, butterfly value doesn't emerge until near expiry)
- If you can't accept a high probability of small loss
Ideal Conditions
- You have a precise price target at expiry (the middle strike)
- Low IV environment where debit butterflies are cheap
- Expiry-day plays for maximum gamma/pin effect
- When you want a cheap, low-risk bet on price pinning
Greeks Impact
Near-zero at the middle strike. Changes as price moves toward the wings.
Positive gamma near the middle strike far from expiry, becomes strongly negative near expiry (which is when butterfly profits emerge).
Negative theta far from expiry, but can become positive near expiry as the middle short strikes decay faster.
Negative vega — butterflies benefit from IV contraction (short 2 ATM options have the most vega).
Nifty Example
Setup: Buy 22400 CE at ₹115, Sell 2× 22500 CE at ₹55 each, Buy 22600 CE at ₹20. Net debit = 115 - (2×55) + 20 = ₹25. Max profit at 22500 = (100 - 25) × 25 = ₹1,875. Max loss = ₹25 × 25 = ₹625. Reward:Risk = 3:1.
If profitable: If Nifty expires at 22500, the 22400 CE is worth 100, the two 22500 CEs expire worthless, and the 22600 CE expires worthless. Spread value = 100. Profit = (100 - 25) × 25 = ₹1,875.
If loss: If Nifty expires below 22400 or above 22600, all legs expire worthless (or in the money by the same amount). Max loss = ₹625.
Adjustments & Risk Management
- Shift the entire butterfly to a new center strike if the underlying moves
- Add a second butterfly at a different strike to create a "double butterfly" or "condor butterfly"
- Convert to an iron butterfly by splitting into puts and calls for potentially better fills
- Scale into the position — enter partial size first, add more if price moves toward center
Butterfly Ratios on Quintal Mind
Quintal Mind calculates butterflies in real-time across multiple ratio configurations: the classic 1:2:1, the asymmetric 1:3:2, 1:4:3, 1:5:4, and the skewed 2:5:3. Each ratio has different risk-reward characteristics and is suited to different market conditions.
The 1:2:1 is the standard butterfly with equal wings. The 1:3:2 and higher ratios create "broken-wing" butterflies that can be entered for credits but carry directional risk on one side. These are popular among Nifty traders who want to sell premium with butterfly-like payoffs.
Expiry Day Butterfly Trading
Butterfly spreads are particularly powerful on expiry day because gamma works in your favor if the price pins near the middle strike. On Nifty weekly expiry (Thursday), butterflies centered around round numbers (22500, 22000, etc.) or max pain levels can offer 5:1 to 10:1 payoffs for a small debit.
The key risk on expiry day is pin risk — if the underlying settles exactly at your short strike, you face assignment risk on the short legs. Always close your butterfly before the final minutes of trading to avoid unexpected assignment.
Related Strategies
See Butterfly Spread in Real-Time
Track live Butterfly Spread values across multiple strikes and expiries on Quintal Mind.
Try Quintal Mind Free →