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Sample‐Path Large Deviations in Credit Risk

Author

Listed:
  • V. J. G. Leijdekker
  • M. R. H. Mandjes
  • P. J. C. Spreij

Abstract

The event of large losses plays an important role in credit risk. As these large losses are typically rare, and portfolios usually consist of a large number of positions, large deviation theory is the natural tool to analyze the tail asymptotics of the probabilities involved. We first derive a sample‐path large deviation principle (LDP) for the portfolio′s loss process, which enables the computation of the logarithmic decay rate of the probabilities of interest. In addition, we derive exact asymptotic results for a number of specific rare‐event probabilities, such as the probability of the loss process exceeding some given function.

Suggested Citation

  • V. J. G. Leijdekker & M. R. H. Mandjes & P. J. C. Spreij, 2011. "Sample‐Path Large Deviations in Credit Risk," Journal of Applied Mathematics, John Wiley & Sons, vol. 2011(1).
  • Handle: RePEc:wly:jnljam:v:2011:y:2011:i:1:n:354171
    DOI: 10.1155/2011/354171
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    References listed on IDEAS

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