CFR›Title 17›Chapter IV›Part 450›17 CFR 450.5 Citation17 CFR 450.5CorpusDaily eCFRDisplayed edition2026-06-08Last updated2026-06-08 § 450.5 Effective date.This part shall be effective October 31, 1987. Previous 450.4 § 450.4 Custodial holdings of government securities.