The date of receipt by the Commission of the certification approving a security for listing and registration shall be the date on which the certification is actually received by the Commission or the date on which the application for registration to which the certification relates is actually received by the Commission, whichever date is later.
17 C.F.R. §240.12d1-4
Sec. 12, 48 Stat. 892, as amended; 15 U.S.C. 78l