Reverse Butterfly
A reverse butterfly, also known as a long butterfly (because it involves "buying" volatility), is a strategy used when a trader expects a stock to make a significant move away from its current price but is unsure of the direction. It is the exact opposite of the standard butterfly. Instead of hoping for a "pin" at a specific price, the trader wants the stock to break out and move past either the upper or lower strike. This is achieved by selling one ITM option, buying two ATM options, and selling one OTM option.
Traders enter a reverse butterfly when they believe a stock is on the verge of a major breakout—perhaps due to an impending court ruling, merger news, or an earnings surprise—but the standard straddle or strangle feels too expensive. Because you are selling the "wings" (the outer strikes) and buying the "body" (the middle strikes), the net cost of the trade is significantly reduced. This strategy is entered for a net credit, meaning you are paid to take the position.
The payoff structure is an inverted "tent." The maximum risk occurs if the stock expires exactly at the middle (short) strike price. In this worst-case scenario, the trader loses the difference between the strikes minus the credit received. However, if the stock moves sharply higher or lower and stays outside the wings, the trader keeps the initial credit as their maximum profit. For example, if you sell a $95 call, buy two $100 calls, and sell a $105 call for a $1 credit, your max loss is $400 (at $100), but you keep the $100 profit if the stock is below $95 or above $105.
Time decay (theta) is the enemy of the reverse butterfly. Since you are "net long" two at-the-money options, the position loses value every day the stock stays near the middle strike. Conversely, the strategy is "long vega." It benefits from a spike in implied volatility, which inflates the value of the middle options faster than the outer ones, potentially allowing you to exit for a profit before the stock even reaches the outer strikes.
Managing a reverse butterfly requires a "breakout or bust" mentality. If the stock makes its move early, it is often wise to close the position and capture the credit plus any volatility expansion. If the stock lingers near the center strike as expiration approaches, the "gamma" risk increases, and the position can lose value rapidly. Because the max profit is capped at the initial credit, this is a "high probability of a small win" vs. a "low probability of a larger loss" trade-off.
The reverse butterfly is a specialized volatility tool for traders who want to bet against a "pin." It is particularly useful when you believe a stock has been consolidated for too long and is about to experience a violent move, but you want to define your risk more strictly than you would with a naked straddle.
