Any corporate fiduciary and its cofiduciary, if any, may invest in:
(1) A common trust fund or collective trust fund containing only investments authorized for fiduciaries, established and maintained by the corporate fiduciary or by any affiliate of the corporate fiduciary within the meaning of section 1504 of the Internal Revenue Code of 1986 (Public Law 99-514, 26 U.S.C. § 1504) and otherwise in conformity with the laws of this Commonwealth and of the United States.
(2) A mortgage investment fund containing only mortgages and other investments authorized for fiduciaries, established and maintained by the corporate fiduciary in conformity with the laws of this Commonwealth and of the United States.