Artikel
Application of vine copulas to credit portfolio risk modeling
In this paper, we demonstrate the superiority of vine copulas over conventional copulas when modeling the dependence structure of a credit portfolio. We show statistical and economic implications of replacing conventional copulas by vine copulas for a subportfolio of the Euro Stoxx 50 and the S&P 500 companies, respectively. Our study includes D-vines and R-vines where the bivariate building blocks are chosen from the Gaussian, the t and the Clayton family. Our findings are (i) the conventional Gauss copula is deficient in modeling the dependence structure of a credit portfolio and economic capital is seriously underestimated; (ii) D-vine structures offer a better statistical fit to the data than classical copulas, but underestimate economic capital compared to R-vines; (iii) when mixing different copula families in an R-vine structure, the best statistical fit to the data can be achieved which corresponds to the most reliable estimate for economic capital.
- Sprache
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Englisch
- Erschienen in
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Journal: Journal of Risk and Financial Management ; ISSN: 1911-8074 ; Volume: 9 ; Year: 2016 ; Issue: 2 ; Pages: 1-15 ; Basel: MDPI
- Klassifikation
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Wirtschaft
- Thema
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pair-copula constructions
vine copulas
Archimedean and elliptical copulas
credit portfolio risk
economic capital
R-vine
D-vine
- Ereignis
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Geistige Schöpfung
- (wer)
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Geidosch, Marco
Fischer, Matthias
- Ereignis
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Veröffentlichung
- (wer)
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MDPI
- (wo)
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Basel
- (wann)
-
2016
- DOI
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doi:10.3390/jrfm9020004
- Handle
- Letzte Aktualisierung
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10.03.2025, 11:44 MEZ
Datenpartner
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Objekttyp
- Artikel
Beteiligte
- Geidosch, Marco
- Fischer, Matthias
- MDPI
Entstanden
- 2016