Option - LO
Expiration of Trading
Trading ends three business days before the termination of trading in the underlying futures contract.

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Futures - CL
Termination of Trading
Trading in the current delivery month shall cease on the third business day prior to the twenty-fifth calendar day of the month preceding the delivery month.

If the twenty-fifth calendar day of the month is a
non-business day, trading shall cease on the third business day prior to the last business day preceding the twenty-fifth calendar day.

In the event that the official Exchange holiday schedule changes subsequent to the listing of a Crude Oil futures, the originally listed expiration date shall remain in effect.

In the event that the originally listed expiration day is declared a holiday, expiration will move to the business day immediately prior.