Abstract

http://ssrn.com/abstract=1349847
 
 

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Dynamic Hedging of Portfolio Credit Derivatives


Rama Cont


Imperial College London; CNRS - Universite de Paris VI

Yu Hang (Gabriel) Kan


Barclays Capital

September 29, 2008


Abstract:     
We compare the performance of various hedging strategies for index CDO tranches across a variety of models and hedging methods during the recent credit crisis. Our empirical analysis shows evidence for market incompleteness: a large proportion of the risk in CDO tranches appears to be unhedgeable. We also show that, unlike what is commonly assumed, dynamic models do not necessarily perform better the static models, nor do high-dimensional bottom-up models perform better than simpler top-down models. Moreover, top-down and regression-based hedging would have provided significantly better hedges than bottom-up hedging with single name CDS during the Lehman Brothers default event. Our empirical study also reveals that while significantly large moves - "jumps" - do occur in the CDS, index and tranche spreads, these jumps do not necessarily occur on default dates of index constituents, an observation which contradicts the intuition conveyed by some recently proposed credit risk models.

Number of Pages in PDF File: 27

Keywords: hedging, portfolio credit derivatives, index default swaps, collateralized debt obligations, top-down credit risk models, default contagion, spread risk, sensitivity-based hedging, risk minimization

JEL Classification: G13, G12

working papers series


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Date posted: February 26, 2009 ; Last revised: December 7, 2009

Suggested Citation

Cont, Rama and Kan, Yu Hang (Gabriel), Dynamic Hedging of Portfolio Credit Derivatives (September 29, 2008). Available at SSRN: http://ssrn.com/abstract=1349847 or http://dx.doi.org/10.2139/ssrn.1349847

Contact Information

Rama Cont (Contact Author)
Imperial College London ( email )
London, SW7 2AZ
United Kingdom
HOME PAGE: http://www3.imperial.ac.uk/people/r.cont
CNRS - Universite de Paris VI ( email )
Laboratoire de Probabilites & Modeles aleatoires
Universite Pierre & Marie Curie (Paris VI)
Paris, 75252
France
HOME PAGE: http://www.proba.jussieu.fr/pageperso/ramacont/
Yu Hang Kan
Barclays Capital ( email )
London EC3P 3AH
United Kingdom
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