31 C.F.R. § 363.208 Can I transfer my marketable Treasury security from my TreasuryDirect® account to an account in another book-entry system?
Title 31 - Money and Finance: Treasury
After the initial 45-calendar day holding period for your marketable Treasury security (see §363.203) you can transfer your security to an account in Legacy Treasury Direct or to an account in the commercial book-entry system in increments of $1000.
Title 31: Money and Finance: Treasury
PART 363—REGULATIONS GOVERNING SECURITIES HELD IN TREASURYDIRECT
Subpart F—Marketable Treasury Securities
§ 363.208 Can I transfer my marketable Treasury security from my TreasuryDirect