Option Expiration Month.

The month an option expires.

Syntax: OptionExpirationMonth([Symbol])

[Symbol] = Optional.

Examples:

OptionExpirationMonth(YMMED)

[Symbol] = Optional.

The expiration month for the May 120 Call in YHOO.

OptionExpirationMonth()
The expiration month for the May 120 Call in the security on the current line.