Journal of Credit Risk

Risk.net

Forwards and European options on CDO tranches

John Hull and Alan White

ABSTRACT

Now that the market for cash and synthetic collateralized debt obligations (CDOs) is well established, there is increased interest in trading forward contracts and options on CDO tranches. This article develops models for valuing these instruments. The model for valuing European options on CDO tranches has similarities to the standard market model for valuing European swap options and to the model for valuing options on credit default swaps (CDSs). Once default probabilities, the expected recovery rates and the degree to which defaults tend to cluster have been estimated, it enables traders to calculate option prices from CDO tranche swap spread volatilities and vice versa.

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