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Rational expectations equilibrium with uncertain proportion of informed traders

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  • Gao, Feng
  • Song, Fengming
  • Wang, Jun

Abstract

This paper introduces uncertainty regarding the proportion of informed traders in a rational expectation equilibrium model with asymmetric information. The proportion uncertainty dramatically changes the properties of the resulting equilibrium. First, it may generate multiple nonlinear rational expectations equilibria, which can help explain the excessive volatility of stock prices. Second, the expected price informativeness is a non-monotonic function of the proportion of informed traders, which suggests that the traders will have more incentive to become informed as the proportion of informed traders gets larger.

Suggested Citation

  • Gao, Feng & Song, Fengming & Wang, Jun, 2013. "Rational expectations equilibrium with uncertain proportion of informed traders," Journal of Financial Markets, Elsevier, vol. 16(3), pages 387-413.
  • Handle: RePEc:eee:finmar:v:16:y:2013:i:3:p:387-413
    DOI: 10.1016/j.finmar.2012.04.001
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Banerjee, Snehal & Green, Brett, 2015. "Signal or noise? Uncertainty and learning about whether other traders are informed," Journal of Financial Economics, Elsevier, vol. 117(2), pages 398-423.
    2. H. Henry Cao & Dongyan Ye, 2016. "Transaction Risk, Derivative Assets, and Equilibrium," Quarterly Journal of Finance (QJF), World Scientific Publishing Co. Pte. Ltd., vol. 6(01), pages 1-20, March.
    3. Hatchondo, Juan Carlos & Krusell, Per & Schneider, Martin, 2014. "Asset Trading and Valuation with Uncertain Exposure," Working Paper 14-5, Federal Reserve Bank of Richmond.

    More about this item

    Keywords

    Nonlinear rational expectations equilibrium; Asymmetric information; Multiplicity; Complementarity;

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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