12 C.F.R. § 252.60 – Applicability.

(a) General applicability. This subpart applies to any U.S. bank holding company that is identified as a global systemically important BHC.
(b) Initial applicability. A global systemically important BHC shall be subject to the requirements of this subpart beginning on the later of:
1. (1) January 1, 2019; or
2. (2) 1095 days (three years) after the date on which the company becomes a global systemically important BHC.