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Insider trading in an equilibrium model with default: a passage from reduced-form to structural modelling

Campi, Luciano; Cetin, Umut (2007), Insider trading in an equilibrium model with default: a passage from reduced-form to structural modelling, Finance and Stochastics, 11, 4, p. 591-602. http://dx.doi.org/10.1007/s00780-007-0038-4

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Type
Article accepté pour publication ou publié
Date
2007
Journal name
Finance and Stochastics
Volume
11
Number
4
Publisher
Springer
Pages
591-602
Publication identifier
http://dx.doi.org/10.1007/s00780-007-0038-4
Metadata
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Author(s)
Campi, Luciano
Cetin, Umut
Abstract (EN)
We study, in the framework of Back [Rev. Financial Stud. 5(3), 387–409 (1992)], an equilibrium model for the pricing of a defaultable zero coupon bond issued by a firm. 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 the market’s view as in reduced-form credit risk models. However, we show that, in 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’s trades are inconspicuous.
Subjects / Keywords
Bessel bridge; Insider trading; Equilibrium; Reduced-form models; Structural models; Default
JEL
G12 - Asset Pricing; Trading Volume; Bond Interest Rates
D82 - Asymmetric and Private Information; Mechanism Design

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