Efficiency Properties of Rational Expectations Equilibria with Asymmetric Information

No 1468, Econometric Society World Congress 2000 Contributed Papers from Econometric Society

Abstract: We analyze the welfare properties of rational expectations equilibria (REE) in economies with asymmetrically informed agents and incomplete markets. We ask whether a planner can improve upon an equilibrium allocation, using an individually rational and incentive compatible mechanism, and subject to the same asset constraints as agents. For an REE that reveals any information at all, the planner can generically bring about an interim Pareto improvement even conditional on the information that is available to agents in equilibrium. He can do so by altering prices while keeping their informational content fixed. Furthermore, for any partially revealing equilibrium, the planner can generically effect an ex post Pareto improvement by providing more information to agents, while controlling for price effects.

Date: 2000-08-01
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Working Paper: Efficiency Properties of Rational Expectations Equilibria with Asymmetric Information (2001)
Working Paper: Efficiency properties of rational expectations equilibria with asymmetric information (2001)
Working Paper: Efficiency Properties of Rational Expectations Equilibria with Asymmetric Information (2001)
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