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December 9, 2019


Repurchase Agreements (Repos): A Primer


Repurchase agreements (repos) are a major source of short-
term funding for financial institutions. Repos are a policy
concern because they have long been identified as a
potential source of systemic risk, meaning that problems in
that market could lead to broader financial instability.

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Repos are legally arranged as a contract between two
parties to sell a security, such as a Treasury bond, and then
repurchase it at a later date at a higher prearranged price
(Figure 1). Economically, a repo is equivalent to a short-
term collateralized loan, with the security serving as
collateral and the percentage change in price between sale
and repurchase acting as the interest rate on the loan (called
the repo rate). From the borrower's perspective, the
transaction is called a repo (or an RP); from the lender's
perspective, it is called a reverse repo (or an RRP).

Figure I. Bilateral Repurchase Agreement



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Repos' characteristics vary widely, including the length to
maturity, whether they last for a specified term or are open-
ended, types of collateral accepted, and the size of the
haircut (i.e., the difference in value between the securities
sold and cash delivered). As a result, repo rates vary based
on these varying characteristics. Generally, repos are short-
term and repo rates are relatively low.
Repos can be bilateral or triparty. In bilateral repos, cash
and securities are exchanged directly between the two
parties. In triparty repos, the cash and securities are
exchanged through a third-party clearing bank. In the
United States, the Bank of New York Mellon (BoNYM) is
currently the only clearing bank for triparty repos. Triparty
repos eliminate the risk that the counterparty to the repo
will not fulfill its terms at the unwind date. Instead,
counterparty risk is borne by the clearing bank if it provides
credit. Bilateral repos can also eliminate counterparty risk if
they are cleared. The primary U.S. clearinghouse for repos
is the Fixed Income Clearing Corporation (FICC). FICC's
counterparty exposure is mitigated through margin
requirements, which require cash to be posted upfront.


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Repos are large-scale transactions that do not directly
involve retail investors. Financial institutions enter into
repos either because (1) one institution has short-term
borrowing needs and another institution has unused cash
that it would like to earn interest on (as shown in Figure 1);
or (2) one institution needs to borrow a certain security
(e.g., to complete a short sale) and another institution is
willing to lend it for cash.

Many types of financial institutions participate in repo
markets, including hedge funds, money market funds,
pension funds, insurance companies, government-sponsored
enterprises, and banks. Typically, repos involve securities
dealers on at least one side of the transaction. Securities
dealers are market makers in securities markets, requiring
them to borrow and lend securities and cash to execute
client orders. Many of the largest securities dealers are
owned by large bank holding companies or foreign bank
organizations.

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According to the Federal Reserve (Fed), there were $3.9
trillion of repos outstanding in the second quarter of 2019,
up 21.6% from the previous year. However, outstanding
repos are probably lower now than they were before the
financial crisis. Due to data gaps, the current relative size of
bilateral versus triparty repos and different institutions'
shares of the repo market are uncertain.


In the 2007-2009 financial crisis, problems in the repo
market contributed to the widespread liquidity problems
faced by financial firms, including Bear Stearns and
Lehman Brothers. Many types of financial firms face a
liquidity mismatch, meaning that their assets are less liquid
(i.e., easily convertible into cash) than their liabilities. To
meet ongoing cash-flow needs, some of these firms convert
securities into cash by borrowing short term in the repo
market. But the amount of borrowing available on the repo
market depends on the willingness of other firms with
surplus cash to lend it. In normal conditions, firms are
relatively indifferent about whom they lend to in repo
markets because they are protected by collateral. During the
financial crisis, some argue that firms became less willing
to lend and required higher-quality collateral or a larger
haircut (particularly for non-Treasury collateral), thereby
reducing the amount of liquidity available to firms
including solvent firms. Although all short-term credit
markets can be subject to this sort of run in a panic, the repo
market is a particular concern because of its size and use by
a broad range of financial firms. The plethora of different
types of firms using repos also meant there was inconsistent


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