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An application to credit risk of a hybrid Monte Carlo-Optimal quantization method

Author

Listed:
  • Giorgia Callegaro

    (SNS - Scuola Normale Superiore di Pisa)

  • Abass Sagna

    (LPMA - Laboratoire de Probabilités et Modèles Aléatoires - UPMC - Université Pierre et Marie Curie - Paris 6 - UPD7 - Université Paris Diderot - Paris 7 - CNRS - Centre National de la Recherche Scientifique)

Abstract

In this paper we use a hybrid Monte Carlo-Optimal quantization method to approximate the conditional survival probabilities of a firm, given a structural model for its credit defaul, under partial information. We consider the case when the firm's value is a non-observable stochastic process $(V_t)_{t \geq 0}$ and inverstors in the market have access to a process $(S_t)_{t \geq 0}$, whose value at each time t is related to $(V_s, s \leq t)$. We are interested in the computation of the conditional survival probabilities of the firm given the "investor information". As a application, we analyse the shape of the credit spread curve for zero coupon bonds in two examples.

Suggested Citation

  • Giorgia Callegaro & Abass Sagna, 2013. "An application to credit risk of a hybrid Monte Carlo-Optimal quantization method," Post-Print hal-00400666, HAL.
    • Handle: RePEc:hal:journl:hal-00400666
    Note: View the original document on HAL open archive server: https://hal.science/hal-00400666
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    References listed on IDEAS

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    1. Gobet, Emmanuel, 2000. "Weak approximation of killed diffusion using Euler schemes," Stochastic Processes and their Applications, Elsevier, vol. 87(2), pages 167-197, June.
    2. Delia Coculescu & Hélyette Geman & Monique Jeanblanc, 2008. "Valuation of default-sensitive claims under imperfect information," Finance and Stochastics, Springer, vol. 12(2), pages 195-218, April.
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