Chapter 18
Unified Credit-Equity Modeling
This chapter surveys a modeling framework for the unified valuation of corporate debt, credit, and equity derivatives.In this framework, the defaultable stock price is seen as the fundamental observable state variable. Corporate debt, credit, and equity derivatives on a given firm are seen as contingent claims on the defaultable stock. We model the defaultable stock price as a jump-to-default extended diffusion. In particular, we survey the jump-to-default extended constant elasticity of variance (JDCEV) model of Carr and Linetsky ...