What is a Call Butterfly Spread in Options?

A call butterfly spread is an options strategy that aims to profit when an underlying asset's price stays within a specific, narrow range until expiration. It combines both bull and bear spreads, using three different strike prices with the same expiration date.

The call butterfly spread is one of the interesting options strategies for beginners in India, offering a way to profit when you expect an asset's price to stay calm. This strategy helps you make money if the market does not move much. It is known for its limited risk and limited profit potential. This means you know your maximum loss and maximum gain upfront. This makes it a popular choice for traders who want to bet on market stability.

How a Call Butterfly Spread Works: An Advanced Options Strategy

This strategy involves four call options with the same expiry date. You buy one call option with a lower strike price (in-the-money or ITM). You sell two call options with a middle strike price (at-the-money or ATM). Finally, you buy one call option with a higher strike price (out-of-the-money or OTM). The distance between the strikes must be equal.

Think of it as two vertical spreads joined together: a bull call spread (buying lower strike call, selling middle strike call) and a bear call spread (selling middle strike call, buying higher strike call). The middle strike call is sold twice, which is why it's often called the "body" of the butterfly.

Setting Up Your Call Butterfly Spread

To build a call butterfly spread, you need to follow these steps:

1. Choose an underlying asset (like a stock or index) you expect to remain stable.
2. Pick an expiration date. All four options must have this same date.
3. Select three strike prices that are equally spaced apart. Let's call them S1, S2, and S3. S1 is the lowest, S2 is the middle, and S3 is the highest.
4. Execute the trades:
   • Buy 1 ITM Call Option at Strike S1.
   • Sell 2 ATM Call Options at Strike S2.
   • Buy 1 OTM Call Option at Strike S3.

Here is how you structure it:

The goal is for the total cost of buying the two calls to be offset by the credit received from selling the two middle calls. You usually pay a small amount (net debit) to set up this strategy.

When to Consider This Options Strategy

You use a call butterfly spread when you believe the underlying asset's price will stay within a certain range. This strategy works best in a neutral or sideways market. You do not expect a big jump or fall in the stock price. If you think the stock will trade flat, this strategy can be very effective. It is also good when volatility is expected to decrease.

Understanding Profit and Loss

Your maximum profit happens if the underlying asset's price is exactly at the middle strike price (S2) at expiration. At this point, the ITM call (S1) is profitable, the OTM call (S3) expires worthless, and the ATM calls (S2) also expire worthless (or close to it, if price is exactly S2).

Your maximum loss occurs if the price goes far below the lowest strike (S1) or far above the highest strike (S3). In these cases, all calls might expire worthless (below S1) or all calls might be deep in the money (above S3), leading to a loss equal to your initial debit.

The breakeven points are usually close to the lower and higher strikes, adjusted for the net premium paid or received.

Example: Building a Call Butterfly
Imagine a stock trading at 100 rupees. You expect it to stay around 100.

You decide to set up a call butterfly spread with 10-rupee wide strikes:

• Buy 1 Call option with a strike price of 90 (ITM). Cost: 12 rupees.
• Sell 2 Call options with a strike price of 100 (ATM). Income per option: 5 rupees. Total income: 10 rupees.
• Buy 1 Call option with a strike price of 110 (OTM). Cost: 1 rupee.

Your total cost (debit) to set up this spread is: (12 + 1) - 10 = 3 rupees. This 3 rupees is your maximum possible loss.

What happens at expiration?

• If stock price is 100:
  • 90 Call: In-the-money by 10 rupees. Value: 10 rupees.
  • 100 Calls: Expire worthless.
  • 110 Call: Expire worthless.
  Your profit = 10 (from 90 call) - 3 (initial debit) = 7 rupees. This is your maximum profit.
• If stock price is 85 (below S1):
  • All calls expire worthless.
  Your loss = 3 rupees (your initial debit). This is your maximum loss.
• If stock price is 115 (above S3):
  • 90 Call: In-the-money by 25 rupees. Value: 25 rupees.
  • 100 Calls: In-the-money by 15 rupees each. You sold two, so you owe 30 rupees.
  • 110 Call: In-the-money by 5 rupees. Value: 5 rupees.
  Net payout at expiration = (25 + 5) - 30 = 0 rupees.Your total loss = 3 rupees (your initial debit). This is also your maximum loss.

Benefits and Drawbacks of This Options Trading Strategy

There are clear reasons why traders choose (or avoid) the call butterfly spread.

• Advantages:
  • Limited Risk: Your maximum loss is known from the start. It is typically the net debit you pay to enter the trade.
  • Defined Profit: You also know your maximum profit. This happens if the stock closes exactly at the middle strike price.
  • Lower Capital Outlay: Compared to some other strategies, the net debit is often small, making it capital-efficient.
  • Neutral Market Play: It is a good strategy when you expect low volatility and a stable market.
• Disadvantages:
  • Limited Profit Potential: While known, the maximum profit is often not very large.
  • Narrow Profit Window: For maximum profit, the stock price needs to be very close to the middle strike at expiration. If it moves too much, your profit shrinks or turns into a loss.
  • Market Timing: You need to be right about the stock staying in a tight range. This can be challenging.
  • Complex Setup: Managing four options at once can be confusing for new traders.

Call Butterfly Spread in the Indian Market

For traders in India looking at advanced options strategies, understanding the call butterfly spread is useful. The National Stock Exchange (NSE) offers a wide range of equity and index options where you can use this strategy. When trading in India, remember the weekly and monthly expiry cycles. These can impact how much time decay affects your options. Always consider factors like liquidity for the specific strikes you choose. Illiquid options can make it hard to enter or exit trades smoothly. You can find more details on options trading rules and contract specifications on the NSE India website. Regulators like SEBI ensure fair trading practices, so understanding the rules is always a good idea.

The call butterfly spread is a powerful options strategy for traders who expect a stock to stay within a specific price range. It offers a clear risk-reward profile, making it easier to manage expectations. While the profit potential is capped, the defined risk is a major benefit. If you are confident about a stock's stability, this strategy gives you a way to potentially profit from that outlook. Make sure you understand the setup and the market conditions that favor this strategy before you use it.