Butterfly Spread: Limited-Risk Range Trading Setup
Butterfly Spread: A Practical Guide for Traders
A butterfly spread is an option strategy used when a trader expects the underlying to stay near a specific price by expiry. It uses three strike prices and four contracts. The strategy offers limited risk and limited reward and works well in range-bound markets.
This guide explains the butterfly spread and how Indian traders can use it.
What Is a Butterfly Spread?
A butterfly spread is a three-strike option strategy. It combines a bull spread and a bear spread around a middle strike.
A common long call butterfly uses:
- Buy one call at the lower strike
- Sell two calls at the middle strike
- Buy one call at the higher strike
All options share the same expiry.
How a Butterfly Spread Works
The strategy reaches its maximum profit if the underlying expires at the middle strike. The maximum loss is the net premium paid.
The breakeven points are the lower strike plus the net premium and the higher strike minus the net premium.
Why Use a Butterfly Spread
Traders use this strategy when:
- They expect the underlying to stay near a target price
- They want a low-cost trade with defined risk
- They expect volatility to fall
- They have a clear price target
The trade-off is a narrow profit zone.
Butterfly Spread Setup
A typical setup uses calls or puts.
Long Call Butterfly
- Buy lower call
- Sell two ATM or near-ATM calls
- Buy higher call
Long Put Butterfly
- Buy higher put
- Sell two ATM or near-ATM puts
- Buy lower put
Both deliver similar payoffs.
Butterfly Spread in Indian Markets
You can use this strategy on:
Weekly butterflies are popular near expiry.
Example of a Butterfly Spread
Suppose Nifty trades at 22,000 and you expect it to expire near 22,000.
- Buy 21,800 call at ₹250
- Sell two 22,000 calls at ₹150 each
- Buy 22,200 call at ₹80
Net cost = 250 – (2 × 150) + 80 = ₹80
Maximum profit at 22,000 = (200 – 80) = ₹120 per point per lot
Maximum loss = ₹80 per point per lot
Breakevens = 21,880 and 22,120
The trade earns most if Nifty expires near 22,000.
Risk and Reward
The butterfly spread has clear features:
- Limited risk
- Limited reward
- Low cost
- Narrow profit zone
This makes it a clean range strategy.
When to Use a Butterfly Spread
The strategy fits when:
- You expect range-bound action
- You have a clear target price
- Volatility is steady
- You have a defined risk plan
Match these conditions to your view.
When Not to Use It
Avoid this trade when:
- You expect a strong trend
- You expect a big volatility move
- You need flexibility in timing
- You cannot manage three legs
A mismatch can lock you in losses.
Common Mistakes With the Strategy
New traders often:
- Pick the wrong middle strike
- Trade butterflies too early in the contract
- Skip the IV check
- Use too much size
A clean plan beats hopeful trades.
Tips for Better Use
A few habits help:
- Match the middle strike to your target
- Use wider strikes for more buffer
- Avoid trading during high uncertainty
- Plan exits at clear profit levels
- Keep a trade journal
Sound habits build steady results.
Butterfly Spread vs Iron Butterfly
The two differ:
- Butterfly spread: uses calls or puts only
- Iron butterfly: uses both calls and puts (credit trade)
Both target a tight range.
Butterfly Spread and Volatility
Volatility plays a role:
- Higher IV at entry: butterfly may be cheaper
- Falling IV after entry: helps the short calls
- Stable IV: time decay supports the trade
Check IV before placing.
Adjusting a Butterfly Spread
If the trade moves against you, you can:
- Roll the wings to a new range
- Close the spread early
- Convert to a different strategy
These adjustments need practice.
Butterfly Spread in Strategy Trees
The trade fits inside many wider plans:
- A part of a broken-wing butterfly
- Combined with calendar spreads
- Used near expiry for tight range bets
Each variant has its own behaviour.
Key Takeaways
- A butterfly spread uses three strikes and four contracts
- It targets a specific price by expiry
- It has limited risk and limited reward
- It works best in range-bound markets
- Indian traders can apply it to Nifty, Bank Nifty, and F&O stocks
The butterfly spread is a fine tool for traders who can pick targets with care. Plan strikes wisely, control your size, and let the trade work inside a clear range view.
