Cahiers du CEREMADE

Unité Mixte de Recherche du C.N.R.S. N°7534
Abstract : We study an equilibrium model for the pricing of a defaultable zero coupon bond issued by a firm in the framework of Back (1992). The market consists of a risk-neutral informed agent, noise traders and a market maker who sets the price using the total order. When the insider does not trade, the default time possesses a default intensity in market s view as in reduced-form credit risk models. However, we show that, in the equilibrium, the modelling becomes structural in the sense that the default time becomes the first time that some continuous observation process falls below a certain barrier. Interestingly, the firm value is still not observable. We also establish the no expected trade theorem that the insider trades are inconspicuous.
Insider trading in an equilibrium model with default: a passage from reduced-form to structural modelling
CAMPI Luciano, CETIN Umut
Université de PARIS - DAUPHINE
Place du Maréchal de Lattre De Tassigny - 75775 PARIS CEDEX 16 - FRANCE
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