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| Title: | 資產群組之動態違約模型──以信用擔保債權為例
On the Dynamic Characterization of Correlated Defaults in the Pricing of Collateral Debts Obligations |
| Authors: | 陳美君
Chen, Mei-Chun |
| Contributors: | 江彌修
陳美君
Chen, Mei-Chun |
| Keywords: | 違約
叢聚
信用
傳染 |
| Date: | 2008 |
| Issue Date: | 2009-09-14 09:31:20 (UTC+8) |
| Abstract: | 本文以建構存活率(survival probability) 之動態過程, 提出簡易的動態信用模型, 可應用於資產群組之信用風險衡量, 及評價廣泛的信用衍生性商品。本研究將模型應用於信用擔保債權(collateralized debt obligation, CDO) 之評價, 再延伸至遠期信用擔保債權之評價。模型假設存活率生成函數(survival probability generating function) 之動態過程乃一含有漂浮項(drift term)的跳躍過程(jump process), 以形容信用事件發生對違約可能性提高之現象。為改善卜瓦松過程中每期信用事件獨立之缺點, 本文假設信用事件之發生頻率為三參數之伽瑪分配(Gamma distribution), 使違約事件之傳染效果(contagious effect) 及叢聚現象更為明顯。模型中所有參數均可以信用擔保債權之市價予以校準, 並且理論價格與市價十分相近。本文提供以信評資料估計信用事件發生頻率之方法, 估計所得之損失分配與市價所隱含之損失分配接近; 故本模型可以充份運用信用評等之資訊, 並可以更合理地評價信用資產群組之價值。 |
| Reference: | • Andersen, L., J. Sidenius, and S., Basu, (2003), ”All Your Hedges
in One Basket,” Risk, 16, 67-72.
• Black, F. and J. C. Cox, (1976), ”Valuing corporate securities:
some effects of bond indenture provisions,” Journal of Finance
31, 351-367.
• Davis, M., and Lo, V. (2001), ”Infectious Defaults”, Quantitative
Finance 1, 382-387.
• Duffie, D. and K. Singleton, (1999), ”Modeling term structures
of defaultable bonds,” Review of Financial Studies 12, 687-720.
• Duffie, D. and N. Garleanu (2001), ”Risk and valuation of collateralized
debt obligations,” Financial Analyst’s Journal 57(1),
41-59.
• Giesecke, K. (2003), ”A Simple Exponential Model for Dependent
Defaults,” Journal of Fixed Income 13(3), 74-83.
• Hull, J., and A. White (2004), ”Valuation of a CDO and nth
to Default CDS without Monte Carlo Simulation,” Journal of
Derivatives, 12 8-23.
• Hull, J., and A. White (2006), ”Valuing Credit Derivatives Using
an Implied Copula Approach,” Journal of Derivatives, 14 8-28.
• Hull, J., and A. White (2008), ”Dynamic Models of Portfolio
Credit Risk: a Simplified Approach,” Journal of Derivatives,
64
15, 9-28.
• Jarrow, R. and S. Turnbull, (1995), ”Pricing Derivatives on Financial
Securities Subject to Credit Risk,”Journal of Finance
50, 53- 85.
• Jarrow, R., D. Lando, and S. Turnbull, (1997), ”A Markov
Model for the Term Structure of Credit Spread,” Review of Financial
Studies 10, 481- 523.
• Laurent, J.P. and J. Gregory, (2003), ”Basket default swaps,
CDO’s and factor copulas,” working paper, ISFA Actuarial School,
University of Lyon.
• Li, D.X. (2000), ”On Default Correlation: A Copula Approach,”
Journal of Fixed Income, 9 43-54.
• Longstaff, F., and A. Rajan (2008), ”An Empirical Analysis of
the Pricing of Collateralized Debt Obligations,” Journal of Finance,
63, 529-563.
• Merton, R.C., (1974), ”On the Pricing of Corporate Debt: The
Risk Structure of Interest Rates,” Journal of Finance, 29 449-
470.
• Vasicek, O., (1987), ”Probability of Loss on a Loan Portfolio,”
Working Paper, KMV. (Published in Risk, December 2002 with
the title ”Loan Portfolio Value”)
• Ruohonenastin, M., (1987), ”On a Model for the Claim Number
Processm,” Astin Bulletin, Vol 18.
• A˘gca, S¸., D. Agrawal and S., (2008), Islam ”Implied Correlations:
Smiles or Smirks?” Journal of Derivatives, 16.
• CreditRisk+ (1997), Credit Suisse First Boston, ”A credit risk
management framework.” Available at http://www.csfb.com/creditrisk.
• Standard & Poor’s, (2007), ”Annual Global Corporate Default
Study and Rating Transitions.”
Available at http://www.standardandpoors.com/ratingsdirect. |
| Description: | 碩士
國立政治大學
金融研究所
96352009
97 |
| Source URI: | http://thesis.lib.nccu.edu.tw/record/#G0096352009 |
| Data Type: | thesis |
| Appears in Collections: | [金融學系] 學位論文
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