Iron Butterflies and Condors: Defined-Risk Volatility Positions

Summary

This article explains how iron butterflies and iron condors combine four option legs to create defined-risk positions. It describes long and short versions, their relationships to straddles and strangles, and how the outer options, or wings, limit potential losses for sellers and potential gains for buyers. A long position pays a net debit and benefits from rising implied volatility and a sufficiently large price move; a short position receives a net credit and generally benefits from lower volatility and prices remaining near the center of its range.

Bitcoin examples illustrate the leg structure and compare payoff profiles with straddles and strangles. The article also notes that comparable payoff shapes can be constructed using only calls or only puts, although the payoff measured in bitcoin can differ even when the dollar payoff is similar. These are conceptual examples rather than a complete pricing or risk analysis: outcomes depend on option premiums, strikes, and the underlying asset’s settlement currency, and the article does not evaluate a trading strategy’s performance.

Key ideas

• Iron butterflies use a shared central strike, while iron condors place the put and call spreads apart to create a wider range.
• Long versions pay a debit, have limited loss, and seek a large price move or an increase in implied volatility.
• Short versions collect a credit, cap both gains and losses, and generally benefit when price stays near the central strike or range.
• The wings limit risk for sellers and limit potential gains for buyers.
• Using calls or puts alone can preserve dollar payoff shape while changing payoff in the underlying asset.

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.