NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Profitable Informed Trading in a Simple General Equilibrium Model of Asset Pricing

James Dow, Gary Gorton

NBER Working Paper No. 4315*
Issued in April 1993
NBER Program(s):   AP

This paper presents a simple general equilibrium model of asset pricing in which profitable informed trading can occur without any "noise" added to the model. It shows that models of profitable informed trading must restrict the portfolio choices of uninformed traders: in particular, they cannot buy the market portfolio. In this model, profitable informed trading lowers the welfare of all agents when compared across steady states.

*Published: JET, Vol. 67, no. 2 (1995): 327-369.

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