Compare call and put butterflies with the same strikes through expiration payoff, debit, liquidity, assignment and capital treatment.
Equivalent shape
A long call butterfly and long put butterfly using identical strikes and expiration can produce the same payoff at expiration under standard assumptions. Put-call parity links their theoretical values.
Pricing differences
Dividends, interest rates, borrow conditions and bid-ask markets can create different executable debits. Compare complete orders instead of assuming quoted legs produce perfect parity.
Assignment exposure
Both contain two short body options that can be assigned early if American-style and ITM. Call assignment interacts with dividends, while put assignment can create long shares.
Choose the cleaner market
Prefer the version with better liquidity, tighter combined pricing and simpler account handling. The strategic forecast should not change merely because puts or calls look familiar.
A practical example
The 95/100/105 call butterfly and put butterfly may show nearly identical modeled expiration P&L, while their combined bid-ask spreads differ by $0.15.
This simplified example focuses on one structure and selected expiration outcomes. Live option prices also reflect the underlying price, time decay, rates, dividends, liquidity and transaction costs. Greeks are theoretical estimates, not guarantees.
Frequently asked questions
Are call and put butterflies identical?
Their expiration payoff can be equivalent, but execution and assignment differ.
Which is cheaper?
Compare live net prices; there is no permanent winner.
Can either be entered for a credit?
Market pricing and structure may create unusual credits, which require careful payoff verification.
Continue the Butterfly Spreads cluster
Explore related guides: Long Butterfly vs Short Iron Butterfly · Implied Volatility and Vega in a Butterfly Spread · Butterfly Spread Explained: Strategy, Risk and Reward. For a structured sequence, use the free Level 12 – Butterfly Spread course.
Options involve risk and are not suitable for every investor. This material is educational and is not investment, tax or legal advice. Greeks are theoretical estimates, and contract terms and broker requirements can vary.