As used in this Act, unless the context otherwise requires:
(a) "Fiduciary" means a corporation qualified to administer trusts in this State under "An Act to provide for and regulate the administration of trusts by trust companies", approved June 15, 1887, as amended, or under "An Act authorizing foreign corporations, including banks, and national banking associations domiciled in other states, to act in a fiduciary capacity in this State upon certain conditions herein set forth", approved July 13, 1953, as amended, when acting either alone or as a co-fiduciary with others in any of the following capacities, namely: testamentary trustee, trustee appointed by any court, trustee under any written agreement, declaration or instrument of trust, executor, administrator, administrator to collect, guardian, agent, custodian, depositary, or any like fiduciary capacity.(b) "Security" means stocks, bonds, debentures, notes or other security of a corporation, and all other instruments of a type commonly dealt in upon securities exchanges or markets or commonly recognized in any area in which it is issued or dealt in as a medium for investment.(c) "Clearing corporation" means a corporation as defined in Article 8 of the Uniform Commercial Code which is authorized to accept and execute trusts.