See Repurchase Agreement.

Repurchase Agreement. This is a money-market instrument usually used to raise short-term capital by dealers in government securities. The dealer sells the government securities to investors, usually on an overnight basis, and buys them back the following day. For the party selling the security (and agreeing to repurchase it in the future) it is a repo; for the party on the other end of the transaction (buying the security and agreeing to sell in the future) it is a reverse repo.

Agreements to repurchase securities (bona fide transactions under repurchase agreements; the subject of the agreement is still allocated to the borrower). From the perspective of the lender, such agreements are known as reverse repos.