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posted on 13 August 2017

Dynamics In The Repo Market

from Liberty Street Economics

-- this post authored by James Egelhof, Antoine Martin, and Noah Zinsmeister

Since the global financial crisis, central bankers and other prudential authorities have been working to design and implement new banking regulations, known as Basel III, to reduce risk in the financial sector. Although most features of the Basel III regime are implemented consistently across jurisdictions, some important details vary. In particular, banks headquartered in the euro area,

Switzerland, and Japan report their leverage ratios - essentially, capital divided by total consolidated assets - as a snapshot of their value on the last day of the quarter. In contrast, institutions headquartered in the United States and the United Kingdom report most leverage ratio components as averages of their daily values over the quarter. In this post, we study the impact of this difference in regulatory implementation on rates and quantities borrowed in the U.S. repo market.

Quarter-end reporting might create incentives for banks to temporarily adjust their balance sheet - decreasing leverage around quarter-end dates and increasing it on other days, for example. These dynamics have been discussed in academic research, by New York Fed officials, most recently in a speech by Simon Potter, the head of the Bank’s Markets Group, and in a recent blog post on plans for future general collateral repo reference rates. A recent report published by the Committee on the Global Financial System provides a more global view on the effect of regulation on repo markets.

The U.S. repo market provides a useful setting to look at quarter-end dynamics for several reasons. We have good data on this market and it has several segments in which we can observe differences that help highlight the economic mechanisms at play. The U.S. repo market is also very liquid, which makes it easy for banks to temporarily reduce balances. Finally, repo transactions, particularly those backed by Treasury securities, are very safe; hence, they are quite likely to be affected by the leverage ratio. Indeed, because these transactions are so safe, their effect on the size of a bank’s balance sheet, when weighted by risk, is small. However, by design the leverage ratio treats all bank assets equally, regardless of risks. Very safe transactions have a low return and are thus less attractive to banks than other activities that have higher risk and a higher return, if the leverage ratio binds.

Tri-Party Repo

We first look at the tri-party repo market, where large investment banks obtain cash against their inventory of securities, or the securities of their clients. Here we use the term “bank" to include securities dealers, most of which are part of regulated banking organizations. We exclude interbank transactions - cleared through the General Collateral Finance Repo Service (GCF Repo®, hereafter GCF Repo) - which are considered separately below. Our expectation is that institutions that report quarter-end snapshots will reduce their repo borrowing around these days as they reduce the size of their balance sheet, and that institutions that report daily averages over the quarter will either keep the same level of activity or, perhaps, increase their activity to pick up some of the slack. The chart below provides strong evidence that euro area and Swiss (hereafter European) banks pull away from the tri-party repo market around quarter-end dates, while we see little change for institutions from other jurisdictions. Perhaps surprisingly, we do not observe much change in behavior among Japanese banks, which are included in the “Other" category. This is consistent with the work of Ben Munyan, who also observes much larger swings in repo borrowing for European banks.

Views from the Repo Market

As European banks sharply decrease their demand for cash around quarter-end dates, we would expect, all else equal, that the repo rate would decrease as lenders compete by lowering the rate that they are willing to accept to invest cash with the remaining borrowers. Instead, the preceding chart shows that the Fed’s overnight reverse repo (ON RRP) program reduces the disruptions this retrenchment might otherwise cause by accepting the cash that lenders cannot invest otherwise. As a result, repo rates remain stable, as shown in the chart below.

Views from the Repo Market

GCF Repo

We now turn to the GCF repo market. This segment, which includes interdealer activity settled on the tri-party platform, is interesting, in part, because interdealer repos are cleared by the Fixed Income Clearing Corporation (FICC). FICC plays the role of central counterparty in this market, meaning that it stands between counterparties to a trade, becoming the buyer to every seller and the seller to every buyer. This is important because accounting and regulatory capital rules allow a bank to record the net value of two transactions on its balance sheets if these transactions have the same counterparty and maturity date and satisfy other technical requirements.

In the tri-party market, banks typically borrow cash, and the only way for them to reduce the size of their balance sheets is to reduce their gross activity. In contrast, banks both borrow and lend cash in the interdealer market, and what matters for the accounting size of their balance sheets is the amount of net activity. The chart below shows the net and gross overnight activity of GCF participants. Net activity is the amount borrowed minus the amount lent, whereas gross activity is the sum of the amount borrowed and the amount lent. We focus on overnight activity because all overnight trades have the same maturity date, one of the requirements for balance sheet netting.

The chart shows that European banks are typically net lenders during the quarter. Consistent with what we would expect if these banks were trying to increase their regulatory ratios, their net position systematically moves toward zero on quarter-end dates. The table below the chart shows that, excluding quarter-end-day data from our sample, European banks lend about $33 billion, on average, each day. On quarter-end dates, in contrast, they lend less than $0.25 billion, on average. The table also shows that European banks’ average gross position decreases by less than $20 billion on quarter-end dates.

U.S. banks also exhibit quarter-end trends in the GCF repo market - a pattern they do not display in the tri-party repo market. This is largely because of the nature of GCF repo transactions; in this market, the net position across all banks must always be zero, as every dollar lent by one bank must be borrowed by another. In other words, any change in the net activity of a subset of banks has to be offset by a corresponding change for the other banks. Thus, the quarter-end movements of U.S. banks are likely a result of European banks’ shifts in activity. Indeed, while European banks reduce their gross activity somewhat on quarter-end dates to achieve their desired net-zero position, U.S. banks increase their gross activity.

Views from the Repo Market

Views from the Repo Market

If the shift in net lending at quarter-end is driven by European banks’ reduced willingness to lend, then borrowers should need to increase the rate they offer to pay to attract the cash they need. The chart below, which displays the spread between the rate in the GCF repo market and the ON RRP offering rate, shows that this is the case (albeit not at the end of 2016).

Views from the Repo Market


Our findings suggest that the implementation details of financial regulations can have important implications for global financial markets. In this example, differences in implementation of the leverage ratio in the United States compared to Europe appear to have a significant impact on the U.S. repo market. Another important lesson is that financial regulations can impact monetary policy implementation. Here, the ON RRP facility appears to have played a useful role as a shock absorber in the tri-party repo market by limiting the effect of variations in European banks’ demand for funds on broader money market conditions.


The views expressed in this post are those of the authors and do not necessarily reflect the position of the Federal Reserve Bank of New York or the Federal Reserve System. Any errors or omissions are the responsibility of the authors.


About the Authors

Egelhof_JamesJames Egelhof is an assistant vice president in the Federal Reserve Bank of New York’s Markets Group.

Antoine MartinAntoine Martin is a senior vice president in the Bank’s Research and Statistics Group.

Noah ZinsmeisterNoah Zinsmeister is a senior research analyst in the Bank’s Research and Statistics Group.

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