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Complementarities in information acquisition with short-term trades

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  • Christophe Chamley

    (Department of Economics, Boston University)

Abstract

In a financial market where agents trade for short-term profit and where news can increase the uncertainty of the public belief, there are strategic complementarities in the acquisition of private information and if the cost of information is sufficient small, a continuum of equilibrium strategies. Imperfect observation of past prices reduces the continuum of Nash-equilibrium to a Strongly Rational-Expectations Equilibrium. In that equilibrium, there are two sharply different regimes for the evolution of the price, the volume of trade and the information acquisition.

Suggested Citation

  • Christophe Chamley, 2006. "Complementarities in information acquisition with short-term trades," Boston University - Department of Economics - Working Papers Series WP2006-042, Boston University - Department of Economics.
    • Handle: RePEc:bos:wpaper:wp2006-042
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    Cited by:

    1. Christian Hellwig & Laura Veldkamp, 2009. "Knowing What Others Know: Coordination Motives in Information Acquisition," Review of Economic Studies, Oxford University Press, vol. 76(1), pages 223-251.
    2. Alper, C. Emre & Ardic, Oya Pinar & Fendoglu, Salih, 2007. "The Economics of Uncovered Interest Parity Condition for Emerging Markets: A Survey," MPRA Paper 4079, University Library of Munich, Germany.
    3. C. Emre Alper & Oya Pinar Ardic & Salih Fendoglu, 2009. "The Economics Of The Uncovered Interest Parity Condition For Emerging Markets," Journal of Economic Surveys, Wiley Blackwell, vol. 23(1), pages 115-138, February.

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    Keywords

    endogenous information; short-term gain; micro-structure; strategic complementarity; multiple equilibria; Strongly Rational-Expectations Equilibrium; trading frenzies.;
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