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Correlation in corporate defaults: Contagion or conditional independence?

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  • Lando, David
  • Nielsen, Mads Stenbo

Abstract

We revisit a method used by Das et al. (2007) (DDKS) who jointly test and reject a specification of firm default intensities and the doubly stochastic assumption in intensity models of default. The method relies on a time change result for counting processes. With an almost identical set of default histories recorded by Moody's in the period from 1982 to 2006, but using a different specification of the default intensity, we cannot reject the tests based on time change used in DDKS. We then note that the method proposed by DDKS is mainly a misspecification test in that it has very limited power in detecting violations of the doubly stochastic assumption. For example, it will not detect contagion which spreads through the explanatory variables "covariates" that determine the default intensities of individual firms. Therefore, we perform a different test using a Hawkes process alternative to see if firm-specific variables are affected by occurrences of defaults, but find no evidence of default contagion.

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Bibliographic Info

Article provided by Elsevier in its journal Journal of Financial Intermediation.

Volume (Year): 19 (2010)
Issue (Month): 3 (July)
Pages: 355-372

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Handle: RePEc:eee:jfinin:v:19:y:2010:i:3:p:355-372

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Web page: http://www.elsevier.com/locate/inca/622875

Related research

Keywords: Default correlation Intensity estimation Hawkes process;

References

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  1. Duffie, Darrell & Saita, Leandro & Wang, Ke, 2007. "Multi-period corporate default prediction with stochastic covariates," Journal of Financial Economics, Elsevier, vol. 83(3), pages 635-665, March.
  2. Carling, Kenneth & Jacobson, Tor & Linde, Jesper & Roszbach, Kasper, 2007. "Corporate credit risk modeling and the macroeconomy," Journal of Banking & Finance, Elsevier, vol. 31(3), pages 845-868, March.
  3. Darrell Duffie & Andreas Eckner & Guillaume Horel & Leandro Saita, 2009. "Frailty Correlated Default," Journal of Finance, American Finance Association, vol. 64(5), pages 2089-2123, October.
  4. Sanjiv Das & Darrell Duffie & Nikunj Kapadia & Leandro Saita, 2006. "Common Failings: How Corporate Defaults are Correlated," NBER Working Papers 11961, National Bureau of Economic Research, Inc.
  5. Nickell, Pamela & Perraudin, William & Varotto, Simone, 2000. "Stability of rating transitions," Journal of Banking & Finance, Elsevier, vol. 24(1-2), pages 203-227, January.
  6. Robert A. Jarrow, 2001. "Counterparty Risk and the Pricing of Defaultable Securities," Journal of Finance, American Finance Association, vol. 56(5), pages 1765-1799, October.
  7. André Lucas & Siem Jan Koopman, 2005. "Business and default cycles for credit risk," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 20(2), pages 311-323.
  8. Maria Vassalou & Yuhang Xing, 2004. "Default Risk in Equity Returns," Journal of Finance, American Finance Association, vol. 59(2), pages 831-868, 04.
  9. Edward I. Altman, 1968. "Financial Ratios, Discriminant Analysis And The Prediction Of Corporate Bankruptcy," Journal of Finance, American Finance Association, vol. 23(4), pages 589-609, 09.
  10. Frederic Schoenberg, 2002. "On Rescaled Poisson Processes and the Brownian Bridge," Annals of the Institute of Statistical Mathematics, Springer, vol. 54(2), pages 445-457, June.
  11. M. Davis & V. Lo, 2001. "Infectious defaults," Quantitative Finance, Taylor and Francis Journals, vol. 1(4), pages 382-387.
  12. Philippe Jorion & Gaiyan Zhang, 2009. "Credit Contagion from Counterparty Risk," Journal of Finance, American Finance Association, vol. 64(5), pages 2053-2087, October.
  13. Pierre Collin-Dufresne, 2001. "The Determinants of Credit Spread Changes," Journal of Finance, American Finance Association, vol. 56(6), pages 2177-2207, December.
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Citations

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Cited by:
  1. Didier Rullière & Diana Dorobantu & Areski Cousin, 2009. "An extension of Davis and Lo's contagion model," Working Papers hal-00374367, HAL.
  2. Jennie Bai & Pierre Collin-Dufresne & Robert S. Goldstein & Jean Helwege, 2012. "On bounding credit event risk premia," Staff Reports 577, Federal Reserve Bank of New York.
  3. Alain Monfort & Jean-Paul Renne, 2010. "Default, Liquidity and Crises : An Econometric Framework," Working Papers 2010-46, Centre de Recherche en Economie et Statistique.
  4. Luca Benzoni & Pierre Collin-Dufresne & Robert S. Goldstein & Jean Helwege, 2012. "Modeling credit contagion via the updating of fragile beliefs," Working Paper Series WP-2012-04, Federal Reserve Bank of Chicago.
  5. Trapp, Monika & Wewel, Claudio, 2012. "Transatlantic systemic risk," CFR Working Papers 12-10, University of Cologne, Centre for Financial Research (CFR).
  6. Carlos Castro Iragorri & Stijn Ferrari, 2010. "Measuring the systemic importance of financial institutions using market information," Financial Stability Review, National Bank of Belgium, vol. 8(1), pages 127-141, June.
  7. Jaqueline Terra Moura Marins & Myrian Beatriz Eiras das Neves, 2013. "Credit Default and Business Cycles: an investigation of this relationship in the Brazilian corporate credit market," Working Papers Series 304, Central Bank of Brazil, Research Department.
  8. Jacobson, Tor & Kindell, Rikard & Lindé, Jesper & Roszbach, Kasper F., 2008. "Firm Default and Aggregate Fluctuations," CEPR Discussion Papers 7083, C.E.P.R. Discussion Papers.
  9. Yadong Li & Ariye Shater, 2010. "Valuation Bound of Tranche Options," Papers 1004.1759, arXiv.org.

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