The broken wing butterfly is an advanced options strategy derived from the more common butterfly spread. Unlike a standard butterfly, which is symmetrical in its risk and reward, a broken wing butterfly has an irregular wing, meaning the distance between the two call or two put strikes is uneven. This asymmetry is purposefully created to alter the payoff diagram, often with the goal of reducing the initial cost of the spread or creating a larger potential profit on one side while maintaining a defined risk profile. For example, a bullish broken wing butterfly might sacrifice some upside potential or increase the downside risk slightly to either receive a credit upfront or reduce the debit paid when initiating the trade. The strategy typically involves three different strike prices of calls or puts, with the middle strike being sold twice, and the outer strikes bought once. The 'broken wing' aspect comes from making the distance between one of the outer strikes and the middle strike different from the distance between the other outer strike and the middle strike. This adjustment can result in a wider profit zone on one side of the underlying price movement or a reduced maximum loss, making it a versatile tool for traders who have a specific directional bias but want to maintain features of a traditional butterfly spread, such as limited risk. It requires careful selection of strike prices and expiration dates to achieve the desired risk-reward characteristics.
The primary difference lies in the spacing of the strike prices; a regular butterfly has equidistant strikes, while a broken wing butterfly has uneven spacing between its strikes. This uneven spacing causes an asymmetry in the risk/reward profile, often to achieve a specific profit target or reduce the cost.
While the standard butterfly is often considered neutral, the broken wing butterfly can be used with a slight directional bias due to its asymmetrical nature. Traders adjust the 'broken wing' to favor a slight move up or down, making it a strategy with a nuanced directional leaning.
A broken wing butterfly generally features a limited maximum profit and a limited maximum loss, similar to a regular butterfly. However, the exact profit and loss zones are shifted and reshaped due to the uneven strike distances, influencing where the strategy performs best.