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A large-market rational expectations equilibrium model

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  • Vives, Xavier

    (IESE Business School)

Abstract

This paper presents a market with asymmetric information where a privately revealing equilibrium obtains in a competitive framework and where incentives to acquire information are preserved. The equilibrium is efficient, and the paradoxes associated with fully revealing rational expectations equilibria are precluded without resorting to noise traders. The rate at which equilibria in finite replica markets with n traders approach the equilibrium in the continuum economy is 1 n , slower than the rate of convergence to price-taking behavior (1 n ); and the per capita welfare loss is dissipated at the rate 1 n , slower than the rate at which inefficiency due to market power vanishes (1 n2 ). The model admits a einterpretation in which behavioral traders coexist with rational traders, and it allows us to characterize the amount of induced mispricing.

Suggested Citation

  • Vives, Xavier, 2011. "A large-market rational expectations equilibrium model," IESE Research Papers D/924, IESE Business School.
    • Handle: RePEc:ebg:iesewp:d-0924
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    References listed on IDEAS

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    1. Andreu Mas-Colell & Xavier Vives, 1993. "Implementation in Economies with a Continuum of Agents," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 60(3), pages 613-629.
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    Cited by:

    1. Peck, James, 2014. "A battle of informed traders and the market game foundations for rational expectations equilibrium," Games and Economic Behavior, Elsevier, vol. 88(C), pages 153-173.

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    More about this item

    Keywords

    adverse selection; information acquisition; double auction; multi-unit auctions; rate convergence; behavioral traders; complementarities;
    All these keywords.

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • D84 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Expectations; Speculations
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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