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Federal Reserve Bank of San Francisco
Working Paper Series
A black swan in the money market
John B. Taylor
John C. Williams
Abstract

At the center of the financial market crisis of 2007-2008 was a highly unusual jump in spreads between the overnight inter-bank lending rate and term London inter-bank offer rates (Libor). Because many private loans are linked to Libor rates, the sharp increase in these spreads raised the cost of borrowing and interfered with monetary policy. The widening spreads became a major focus of the Federal Reserve, which took several actions--including the introduction of a new term auction facility (TAF)--to reduce them. This paper documents these developments and, using a no-arbitrage model of the term structure, tests various explanations, including increased risk and greater liquidity demands, while controlling for expectations of future interest rates. We show that increased counterparty risk between banks contributed to the rise in spreads and find no empirical evidence that the TAF has reduced spreads. The results have implications for monetary policy and financial economics.


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John B. Taylor & John C. Williams, A black swan in the money market, Federal Reserve Bank of San Francisco, Working Paper Series 2008-04, 2008.
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Keywords: Interest rates ; Monetary policy
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