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Beliefs About the Stock Market and Investment Choices: Evidence from a Field Experiment

Author

Listed:
  • Rüdiger Weber

    (WU Vienna and VGSF)

  • Annika Weber

    (Goethe University Frankfurt and SAFE)

  • Christine Laudenbach

    (University of Bonn)

  • Johannes Wohlfart

    (Department of Economics and CEBI, University of Copenhagen)

Abstract

We survey retail investors at an online bank to study how beliefs about the autocorrelation of aggregate stock returns shape investment decisions measured in administrative account data. Individuals' beliefs exhibit substantial heterogeneity and predict trading responses to market movements. We inform half of our respondents that, historically, the autocorrelation of returns was close to zero, which persistently changes their beliefs. The treatment significantly shifts respondents' equity purchases during the Covid-19 crash months later in the direction implied by the belief changes caused by the intervention. Our results provide causal evidence on the drivers of disagreement and trade in asset markets.

Suggested Citation

  • Rüdiger Weber & Annika Weber & Christine Laudenbach & Johannes Wohlfart, 2021. "Beliefs About the Stock Market and Investment Choices: Evidence from a Field Experiment," CEBI working paper series 21-17, University of Copenhagen. Department of Economics. The Center for Economic Behavior and Inequality (CEBI).
    • Handle: RePEc:kud:kucebi:2117
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    References listed on IDEAS

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    Citations

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    Cited by:

    1. Heiner Mikosch & Christopher Roth & Samad Sarferaz & Johannes Wohlfart, 2024. "Uncertainty and Information Acquisition: Evidence from Firms and Households," American Economic Journal: Macroeconomics, American Economic Association, vol. 16(2), pages 375-405, April.
    2. Ropele, Tiziano & Gorodnichenko, Yuriy & Coibion, Olivier, 2022. "Inflation Expectations and Corporate Borrowing Decisions: New Causal Evidence," IZA Discussion Papers 15614, Institute of Labor Economics (IZA).
    3. Peter Haan & Chen Sun & Uwe Sunde & Georg Weizsäcker, 2022. "Non-Additivity of Subjective Expectations over Different Time Intervals," Discussion Papers of DIW Berlin 2027, DIW Berlin, German Institute for Economic Research.
    4. Christine Laudenbach & Michael Ungeheuer & Martin Weber, 2023. "How to Alleviate Correlation Neglect in Investment Decisions," Management Science, INFORMS, vol. 69(6), pages 3400-3414, June.
    5. Alistair Macaulay & James Moberly, 2022. "Heterogeneity in imperfect inflation expectations:theory and evidence from a novel survey," Economics Series Working Papers 970, University of Oxford, Department of Economics.
    6. Rieger, Marc O. & Wang, Mei & Phan, Thuy Chung & Gong, Yujing, 2022. "Trend following or reversal: Does culture affect predictions and trading behavior?," Global Finance Journal, Elsevier, vol. 54(C).
    7. Fries, Tilman & Barron, Kai, 2023. "Narrative Persuasion," VfS Annual Conference 2023 (Regensburg): Growth and the "sociale Frage" 277691, Verein für Socialpolitik / German Economic Association.
    8. Müller, Lara Marie & Harrs, Sören & Rockenbach, Bettina, 2022. "How Narratives Impact Financial Behavior - Experimental Evidence from the COVID-19 Pandemic," VfS Annual Conference 2022 (Basel): Big Data in Economics 264089, Verein für Socialpolitik / German Economic Association.
    9. Alistair Macaulay, 2022. "Heterogeneous Information, Subjective Model Beliefs, and the Time-Varying Transmission of Shocks," CESifo Working Paper Series 9733, CESifo.

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    More about this item

    Keywords

    Expectation Formation; Retail Investors; Trading; Field Experiment;
    All these keywords.

    JEL classification:

    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • D84 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Expectations; Speculations
    • D91 - Microeconomics - - Micro-Based Behavioral Economics - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making
    • E71 - Macroeconomics and Monetary Economics - - Macro-Based Behavioral Economics - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on the Macro Economy
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G41 - Financial Economics - - Behavioral Finance - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making in Financial Markets
    • G50 - Financial Economics - - Household Finance - - - General

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