Underlying asset means:
(1) The security or other asset that will be delivered upon exercise of an option; or
(2) In the case of a cash-settled option, the securities or other assets which comprise the index or other measure from which the option's value is derived.
12 CFR § 220.2
The terms used in this part have the meanings given them in section 3 of the Act or as defined in this section as follows: