Option Expiration Code.

The month an option expires.

Syntax: OptionExpirationCode([Symbol])

[Symbol] = Optional.

Examples:

OptionExpirationCode(YMMED)

[Symbol] = Optional.

The expiration month for the May 120 Call in YHOO.

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