Copula-Based Factor Model for Credit Risk Analysis

Meng-Jou Lu, Cathy Yi-Hsuan Chen and Wolfgang Karl H\"ardle

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Abstract: A standard quantitative method to access credit risk employs a factor model based on joint multivariate normal distribution properties. By extending a one-factor Gaussian copula model to make a more accurate default forecast, this paper proposes to incorporate a state-dependent recovery rate into the conditional factor loading, and model them by sharing a unique common factor. The common factor governs the default rate and recovery rate simultaneously and creates their association implicitly. In accordance with Basel III, this paper shows that the tendency of default is more governed by systematic risk rather than idiosyncratic risk during a hectic period. Among the models considered, the one with random factor loading and a state-dependent recovery rate turns out to be the most superior on the default prediction.

Date: 2020-09, Revised 2020-10
New Economics Papers: this item is included in nep-rmg
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Published in Review of Quantitative Finance and Accounting, 49, pages 949 to 971, 2017

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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2009.12092

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