Liquidity Risk and Correlation Risk: A Clinical Study of the General Motors and Ford Downgrade of May 2005
Viral V. Acharya
New York University - Leonard N. Stern School of Business; Centre for International Finance and Regulation (CIFR); Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER); New York University (NYU) - Department of Finance
Stephen M. Schaefer
London Business School - Institute of Finance and Accounting
London Business School
November 18, 2007
The GM and Ford downgrade to junk status during May 2005 caused a wide-spread sell-off in their corporate bonds. Using a novel dataset, we document that this sell-off appears to have generated significant liquidity risk for market-makers, as evidenced in the significant imbalance in their quotes towards sales. We also document that simultaneously, there was excess co-movement in the fixed-income securities of all industries, not just in those of auto firms. In particular, using credit-default swaps (CDS) data, we find a substantial increase in the co-movement between innovations in the CDS spreads of GM and Ford and those of firms in all other industries, the increase being greatest during the period surrounding the actual downgrade and reversing sharply thereafter. We show that a measure of liquidity risk faced by corporate bond market-makers - specifically, the imbalance towards sales in the volume and frequency of quotes on GM and Ford bonds - explains a significant portion of this excess co-movement. Additional robustness checks suggest that this relationship between the liquidity risk faced by market-makers and the correlation risk for other securities in which they make markets was likely causal. Overall, the evidence is supportive of theoretical models which imply that funding liquidity risk faced by financial intermediaries is a determinant of market prices during stress times.
Number of Pages in PDF File: 66
Keywords: market liquidity, funding liquidity, excess co-movement, inventory risk, financial crises
JEL Classification: G12, G13, G14, G21, G22working papers series
Date posted: March 5, 2008 ; Last revised: September 29, 2008
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