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The Wisdom of the Crowd in Dynamic Economies

Author

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  • Pietro Dindo

    (Department of Economics, University Of Venice CÃ Foscari)

  • Filippo Massari

    (Australian School of Business, University of New South Wales, Sydney, Australia)

Abstract

The Wisdom of the Crowd applied to financial markets asserts that prices represent a consensus belief that is more accurate than individual beliefs. However, a market selection argument implies that prices eventually reflect only the beliefs of the most accurate agent. In this paper, we show how to reconcile these alternative points of view. In markets in which agents naively learn from equilibrium prices, a dynamic Wisdom of the Crowd holds. Market participation increases agents' accuracy, and equilibrium prices are more accurate than the most accurate agent.

Suggested Citation

  • Pietro Dindo & Filippo Massari, 2017. "The Wisdom of the Crowd in Dynamic Economies," Working Papers 2017:17, Department of Economics, University of Venice "Ca' Foscari", revised 2018.
    • Handle: RePEc:ven:wpaper:2017:17
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    2. Datta, Bikramaditya & Sethi, Rajiv, 2023. "The dynamics of leverage and the belief distribution of wealth," Journal of Economic Behavior & Organization, Elsevier, vol. 212(C), pages 20-31.
    3. Bottazzi, Giulio & Giachini, Daniele & Ottaviani, Matteo, 2023. "Market selection and learning under model misspecification," Journal of Economic Dynamics and Control, Elsevier, vol. 156(C).
    4. Michele Vodret & Iacopo Mastromatteo & Bence Tóth & Michael Benzaquen, 2023. "Microfounding GARCH models and beyond: a Kyle-inspired model with adaptive agents," Journal of Economic Interaction and Coordination, Springer;Society for Economic Science with Heterogeneous Interacting Agents, vol. 18(3), pages 599-625, July.
    5. Daniele Giachini, 2018. "Rationality and Asset Prices under Belief Heterogeneity," LEM Papers Series 2018/07, Laboratory of Economics and Management (LEM), Sant'Anna School of Advanced Studies, Pisa, Italy.
    6. Bikramaditya Datta & Rajiv Sethi, 2023. "The Dynamics of Leverage and the Belief Distribution of Wealth," Papers 2304.03436, arXiv.org.
    7. Paritosh Chandra Sinha, 2023. "Attention to the Fads and Fashions in the Indian Stock Markets During COVID-19," Vision, , vol. 27(2), pages 202-224, April.
    8. Daniele Giachini, 2021. "Rationality and asset prices under belief heterogeneity," Journal of Evolutionary Economics, Springer, vol. 31(1), pages 207-233, January.
    9. Zawadzka-Pąk Urszula K., 2022. "Participatory Budgeting as the Instrument of Technologically Supported Dialogue in Cracow, Poland," TalTech Journal of European Studies, Sciendo, vol. 12(2), pages 3-19, December.
    10. Giulio Bottazzi & Pietro Dindo & Daniele Giachini, 2019. "Momentum and reversal in financial markets with persistent heterogeneity," Annals of Finance, Springer, vol. 15(4), pages 455-487, December.
    11. Andrea Antico & Giulio Bottazzi & Daniele Giachini, 2022. "On the evolutionary stability of the sentiment investor," LEM Papers Series 2022/09, Laboratory of Economics and Management (LEM), Sant'Anna School of Advanced Studies, Pisa, Italy.
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    More about this item

    Keywords

    Wisdom of the Crowd; Heterogeneous Beliefs; Market Selection Hypothesis; Naive Learning;
    All these keywords.

    JEL classification:

    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets
    • D01 - Microeconomics - - General - - - Microeconomic Behavior: Underlying Principles
    • G1 - Financial Economics - - General Financial Markets

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