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Estimation of the Default Risk of Publicly Traded Canadian Companies

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  • Georges Dionne
  • Sadok Laajimi
  • Sofiane Mejri
  • Madalina Petrescu

Abstract

Two models of default risk are prominent in the financial literature: Merton's structural model and Altman's non-structural model. Merton's structural model has the benefit of being responsive, since the probabilities of default can continually be updated with the evolution of firms' asset values. Its main flaw lies in the fact that it may over- or underestimate the probabilities of default, since asset values are unobservable and must be extrapolated from the share prices. Altman's nonstructural model, on the other hand, is more precise, since it uses firms' accounting data-but it is less flexible. In this paper, the authors investigate the hybrid contingent claims approach with publicly traded Canadian companies listed on the Toronto Stock Exchange. The authors' goal is to assess how their ability to predict companies' probability of default is improved by combining the companies' continuous market valuation (structural model) with the value given in their financial statements (non-structural model). The authors' results indicate that the predicted structural probabilities of default (PDs from the structural model) contribute significantly to explaining default probabilities when PDs are included alongside the retained accounting variables in the hybrid model. The authors also show that quarterly updates to the PDs add a large amount of dynamic information to explain the probabilities of default over the course of a year. This flexibility would not be possible with a non-structural model. The authors conduct a preliminary analysis of correlations between structural probabilities of default for the firms in their database. Their results indicate that there are substantial correlations in the studied data.

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Bibliographic Info

Paper provided by Bank of Canada in its series Working Papers with number 06-28.

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Length: 63 pages
Date of creation: 2006
Date of revision:
Handle: RePEc:bca:bocawp:06-28

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Keywords: Debt management; Credit and credit aggregates; Financial markets; Recent economic and financial developments; Econometric and statistical methods;

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References

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  17. Chunsheng Zhou, 1997. "A jump-diffusion approach to modeling credit risk and valuing defaultable securities," Finance and Economics Discussion Series, Board of Governors of the Federal Reserve System (U.S.) 1997-15, Board of Governors of the Federal Reserve System (U.S.).
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Cited by:
  1. Reisz, Alexander S. & Perlich, Claudia, 2007. "A market-based framework for bankruptcy prediction," Journal of Financial Stability, Elsevier, Elsevier, vol. 3(2), pages 85-131, July.
  2. Maria Giuli & Dean Fantazzini & Mario Maggi, 2008. "A New Approach for Firm Value and Default Probability Estimation beyond Merton Models," Computational Economics, Society for Computational Economics, Society for Computational Economics, vol. 31(2), pages 161-180, March.

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