A financial institution must be a collector depositary that accepts term investments, an investor depositary, or a retainer depositary to participate in the investment program. Depositaries electing to participate in the investment program can receive Treasury's investments in obligations of the depositary from the following sources:
(a) FTDs that have been credited to the depositary's TIP main account balance pursuant to subpart C of this part;
(b) EFTPS ACH credit and debit transactions, Fedwire [supreg] non-value transactions, and Fedwire [supreg] value transfers pursuant to subpart B of this part;
(c) Direct investments, SDIs, dynamic investments, and term investments pursuant to subpart D of this part; and
(d) Other excess Treasury operating funds.