Input interpretation
![diagonal option spread](../image_source/250e9879bb300732f3ba33413da5c1a0.png)
diagonal option spread
Input values
![option name | European first strike price | $50 (US dollars) second strike price | $55 (US dollars) first time to expiration | 2 months second time to expiration | 3 months option type | call underlying price | $49 (US dollars) volatility | 20% dividend yield | 1% risk-free interest rate | 0.12%](../image_source/ae489c0b6ecca14517650cd9cb77a1b5.png)
option name | European first strike price | $50 (US dollars) second strike price | $55 (US dollars) first time to expiration | 2 months second time to expiration | 3 months option type | call underlying price | $49 (US dollars) volatility | 20% dividend yield | 1% risk-free interest rate | 0.12%
Invalid date
![(the expiration date cannot be before the current date, nor can the time to expiration be negative)](../image_source/643c71f1f8d31b84a4e1e787cc696b60.png)
(the expiration date cannot be before the current date, nor can the time to expiration be negative)