Changes in Stock List

Any modification to the list of tradable issues of an exchange. These modifications include: new listings, supplemental security listings, substitutional listings, deletions, name changes, and stock symbol changes.

Clearing Day

Any business day on which the clearing corporation is open to effect trade clearing and settlement.

Cash Settlement

Settlement of an option contract not by delivery of the underlying shares, but by a cash payment of the difference between the strike or exercise price and the underlying settlement price.