Insider Trading With Different Risk Attitudes

Abstract

This paper investigates the effect of different risk attitudes on the financial decisions of two insiders trading in the stock market. We consider a static version of the Kyle (1985) model with two insiders. Insider 1 is risk neutral while insider 2 is risk averse with negative exponential utility. First, we prove the existence of a unique linear equilibrium. Second, we obtain somewhat surprising results on how the risk attitudes affect the market liquidity, the price efficiency, when we carry out a comparative static analysis with respect to Tighe (1989) and Holden and Subrahmanyam(1994) models