विधियों की तुलना करें

	कॉपुला सीडीओ मॉडल	जोखिम-उदासीन मूल्यांकन
क्षेत्र	मात्रात्मक वित्त	मात्रात्मक वित्त
परिवार	Regression model	Regression model
उद्भव वर्ष	2000	1979
प्रवर्तक	David X. Li	John Harrison and David Kreps
प्रकार	Credit Portfolio Model	Fundamental Principle
मौलिक स्रोत	Li, D. X. (2000). On default correlation: A copula function approach. Journal of Fixed Income, 9(4), 43-54.	Harrison, J. M., & Kreps, D. M. (1979). Martingales and arbitrage in multiperiod securities markets. Journal of Economic Theory, 20(3), 381-408.
उपनाम	Copula Default Model, CDO Pricing	Risk-Neutral Measure, Q-Measure
संबंधित	3	4
सारांश	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.	Risk-neutral valuation (1979) is the fundamental principle that derivative prices equal the expected payoff discounted at the risk-free rate, computed under a risk-neutral probability measure (Q-measure). This principle, formalized by Harrison and Kreps, eliminates the need to estimate risk premia and is the foundation of modern derivatives pricing.