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Naive traders and mispricing in prediction markets

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  • Serrano-Padial, Ricardo

Abstract

This paper studies pricing patterns in a speculative market with asymmetric information populated by both sophisticated and naive traders. Three pricing regimes arise in equilibrium: perfect pricing, with prices equalling asset values, partial mispricing and complete mispricing. Perfect pricing obtains when the presence of naive traders is small although not necessarily zero. When the fraction of naive traders is moderate prices are correct for some values but not for others. Finally, complete mispricing typically arises when the presence of naive traders is sufficiently high. Mispricing exhibits a systematic pattern of overpricing low values and underpricing high values.

Suggested Citation

  • Serrano-Padial, Ricardo, 2012. "Naive traders and mispricing in prediction markets," Journal of Economic Theory, Elsevier, vol. 147(5), pages 1882-1912.
    • Handle: RePEc:eee:jetheo:v:147:y:2012:i:5:p:1882-1912
    DOI: 10.1016/j.jet.2012.05.020
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    Cited by:

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    2. Marco Ottaviani & Peter Norman Sørensen, 2015. "Price Reaction to Information with Heterogeneous Beliefs and Wealth Effects: Underreaction, Momentum, and Reversal," American Economic Review, American Economic Association, vol. 105(1), pages 1-34, January.
    3. Xavier Vives, 2011. "A Large-Market Rational Expectations Equilibrium Model," CESifo Working Paper Series 3485, CESifo.
    4. Qingbin Gong & Xundi Diao, 2022. "Bounded rationality, asymmetric information and mispricing in financial markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 74(1), pages 235-264, July.
    5. repec:hal:journl:dumas-00809694 is not listed on IDEAS
    6. Vincent P. Crawford & Miguel A. Costa-Gomes & Nagore Iriberri, 2010. "Strategic Thinking," Levine's Working Paper Archive 661465000000001148, David K. Levine.
    7. Buckley, Winston & Long, Hongwei & Perera, Sandun, 2014. "A jump model for fads in asset prices under asymmetric information," European Journal of Operational Research, Elsevier, vol. 236(1), pages 200-208.
    8. Cheng, Feiyang & Chiao, Chaoshin & Wang, Chunfeng & Fang, Zhenming & Yao, Shouyu, 2021. "Does retail investor attention improve stock liquidity? A dynamic perspective," Economic Modelling, Elsevier, vol. 94(C), pages 170-183.

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    More about this item

    Keywords

    Naive traders; Double auction; Common values; Private information; Prediction markets; Favorite-longshot bias;
    All these keywords.

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D44 - Microeconomics - - Market Structure, Pricing, and Design - - - Auctions
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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