השוואת שיטות
סקרו את השיטות שבחרתם זו לצד זו; שורות שבהן יש הבדל מודגשות.
| מודל הקופולה ל-CDO× | מודל מרטון להתנהגות פשיטת רגל× | |
|---|---|---|
| תחום | מימון כמותי | מימון כמותי |
| משפחה | Regression model | Regression model |
| שנת המקור≠ | 2000 | 1974 |
| הוגה השיטה≠ | David X. Li | Robert C. Merton |
| סוג≠ | Credit Portfolio Model | Credit Risk Model |
| מקור מכונן≠ | 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 ↗ |
| כינויים | Copula Default Model, CDO Pricing | Structural Credit Model, Asset-to-Equity Model |
| קשורות | 3 | 3 |
| תקציר≠ | 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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