ction into Subsecs. and referred simply to fiduciaries, deleting listing of specific types of fiduciaries, i.e. trustees, executors, administrators, guardians and conservators; P.A. 88-104 added a new Subsec. (c) re investments in securities by a banking institution acting as a fiduciary; P.A. 88-364 amended Subsec. (c)(2) by adding the words during the existence of any underwriting or selling sy