Dependent default and recovery: MCMC study of downturn LGD credit risk model

Pavel V. Shevchenko and Xiaolin Luo

Papers from arXiv.org

Abstract: There is empirical evidence that recovery rates tend to go down just when the number of defaults goes up in economic downturns. This has to be taken into account in estimation of the capital against credit risk required by Basel II to cover losses during the adverse economic downturns; the so-called "downturn LGD" requirement. This paper presents estimation of the LGD credit risk model with default and recovery dependent via the latent systematic risk factor using Bayesian inference approach and Markov chain Monte Carlo method. This approach allows joint estimation of all model parameters and latent systematic factor, and all relevant uncertainties. Results using Moody's annual default and recovery rates for corporate bonds for the period 1982-2010 show that the impact of parameter uncertainty on economic capital can be very significant and should be assessed by practitioners.

Date: 2011-12
New Economics Papers: this item is included in nep-ban, nep-ecm and nep-rmg
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Published in ANZIAM Journal 53, pp. C185-C202, 2012

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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:1112.5766

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