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The Dual Role Of Equilibrium Price In Competitive Economies With Asymmetric Information

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  • Dejan Trifunović

Abstract

This paper analyses equilibrium in competitive markets with asymmetrically informed agents. In contrast to Walrasian equilibrium, where equilibrium price is only an indicator of relative scarcity, in the models studied in this paper equilibrium price has two additional roles. It conveys and aggregates the private information of agents in the economy. Each agent infers the private information of other agents by studying the equilibrium price. This implies that agents in this setting have higher cognitive capabilities than Walrasian agents. The equilibrium concept used to describe these additional roles of equilibrium price is called Rational Expectations Equilibrium (REE).

Suggested Citation

  • Dejan Trifunović, 2008. "The Dual Role Of Equilibrium Price In Competitive Economies With Asymmetric Information," Economic Annals, Faculty of Economics and Business, University of Belgrade, vol. 53(178-179), pages 7-43, July - De.
    • Handle: RePEc:beo:journl:v:53:y:2008:i:178-179:p:7-43
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    References listed on IDEAS

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    1. Milgrom, Paul & Stokey, Nancy, 1982. "Information, trade and common knowledge," Journal of Economic Theory, Elsevier, vol. 26(1), pages 17-27, February.
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    More about this item

    Keywords

    Fully revealing rational expectations equilibrium; Noisy rational expectations equilibrium; Information aggregation; Stock market crashes;
    All these keywords.

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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