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| Kopula-CDO-Modell× | Merton-Ausfallmodell× | |
|---|---|---|
| Fachgebiet | Quantitative Finanzwirtschaft | Quantitative Finanzwirtschaft |
| Familie | Regression model | Regression model |
| Entstehungsjahr≠ | 2000 | 1974 |
| Urheber≠ | David X. Li | Robert C. Merton |
| Typ≠ | Credit Portfolio Model | Credit Risk Model |
| Wegweisende Quelle≠ | Li, D. X. (2000). On default correlation: A copula function approach. Journal of Fixed Income, 9(4), 43-54. DOI ↗ | Merton, R. C. (1974). On the pricing of corporate debt: The risk structure of interest rates. Journal of Finance, 29(2), 449-470. DOI ↗ |
| Aliasnamen | Copula Default Model, CDO Pricing | Structural Credit Model, Asset-to-Equity Model |
| Verwandt | 3 | 3 |
| Zusammenfassung≠ | The copula CDO model (Li 2000) uses Gaussian copulas to price collateralized debt obligations (CDOs) by modeling joint default probabilities across a portfolio of bonds. The model became the industry standard for CDO pricing but was heavily criticized post-2008 for underestimating tail risk and correlation breakdowns during crises. | The Merton model (1974) is a structural approach to credit risk in which a firm defaults when its asset value falls below liabilities at maturity. Equity is viewed as a call option on firm value, and debt is an implicit short put position. The model links company fundamentals (asset volatility) to default probability and is foundational for modern credit risk measurement. |
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