Assertion: call's expiration date | /r/HasProperty | important
Facets:
Source sentences:
text: The expiration date is important because it helps traders to price the value of the put and the call, which is known as the time value, and is used in various option pricing models such as the Black Scholes Model.
text: The expiration date is an important part of defining a stock option and the value (or premium) that is tied to the contract.