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In Rememberance: World Trade Center (WTC)

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Do Credit Spreads Reflect Stationary Leverage Ratios?

by Pierre Collin-Dufresne of Carnegie Mellon University, and
Robert S. Goldstein of Washington University, St. Louis

October 2001

Abstract. Most structural models of default preclude the firm from altering its capital structure. In practice, firms adjust outstanding debt levels in response to changes in firm value, thus generating mean-reverting leverage ratios. We propose a structural model of default with stochastic interest rates that captures this mean reversion. Our model generates credit spreads that are larger for low-leverage firms, and less sensitive to changes in firm value, both of which are more consistent with empirical findings than predictions of extant models. Further, the term structure of credit spreads can be upward sloping for speculative-grade debt, consistent with recent empirical findings.

Published in: Journal of Finance, Vol. 56, No. 5, (October 2001), pp. 1929-1958.

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