Counterparty Risk and Contingent CDS Valuation Under Correlation Between Interest-Rates and Default
by Damiano Brigo of FitchSolutions & Imperial College, London, and
March 26, 2008
Abstract: We consider counterparty risk for interest rate payo s in presence of correlation between the default event and interest rates. The previous analysis of Brigo and Masetti (2006), assuming independence, is further extended to interest rate payoffs different from simple swap portfolios. A stochastic intensity model with possible jumps is adopted for the default event. We find that correlation between interest-rates and default has a relevant impact on the positive adjustment to be subtracted from the default free price to take into account counterparty risk. We analyze the pattern of such impacts as product characteristics and tenor structures change through some fundamental numerical examples. We find the counterparty risk adjustment to decrease with the correlation for receiver payoffs, while the analogous adjustment for payer payoffs increases. The impact of correlation decreases when the default probability increases. Finally, our analysis applies naturally also to Contingent Credit Default Swaps.
Keywords: Counterparty Risk, Contingent Credit Default Swap, Hybrid Products, Interest-rate default Correlation, Risk Neutral Valuation, Default Risk, Interest rate models, Default intensity models.
Previously titled: Counterparty Risk Valuation Under Correlation Between Interest-rates and Default
This paper is republished as Ch.10 in...