Do Rare Events Explain CDX Tranche Spreads?

Do Rare Events Explain CDX Tranche Spreads?

  • SANG BYUNG SEO
  • JESSICA A. WACHTER

Article first published online: 10th August 2018 DOI: 10.1111/jofi.12705

Abstract


We investigate whether a model with time‐varying probability of economic dis‐ aster can explain prices of collateralized debt obligations. We focus on senior tranches of the CDX, an index of credit default swaps on investment grade rms. These assets do not incur losses until a large fraction of previously stable rms default, and thus are deep out‐of‐the money put options on the overall economy. When calibrated to consumption data and to the equity premium, the model explains the spreads on CDX tranches prior to and during the 2008–2009 crisis.

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