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Smart (phone) investing? A within investor-time analysis of new technologies and trading behavior

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  • Kalda, Ankit
  • Loos, Benjamin
  • Previtero, Alessandro
  • Hackethal, Andreas

Abstract

Using transaction-level data from two German banks, we study the effects of smartphones on investor behavior. Comparing trades by the same investor in the same month across different platforms, we find that smartphones increase purchasing of riskier and lottery-type assets and chasing past returns. After the adoption of smartphones, investors do not substitute trades across platforms and buy also riskier, lottery-type, and hot investments on other platforms. Using smartphones to trade specific assets or during specific hours contributes to explain our results. Digital nudges and the device screen size do not mechanically drive our results. Smartphone effects are not transitory

Suggested Citation

  • Kalda, Ankit & Loos, Benjamin & Previtero, Alessandro & Hackethal, Andreas, 2021. "Smart (phone) investing? A within investor-time analysis of new technologies and trading behavior," SAFE Working Paper Series 303, Leibniz Institute for Financial Research SAFE.
    • Handle: RePEc:zbw:safewp:303
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    References listed on IDEAS

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    Cited by:

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    3. Borsboom, Charlotte & Janssen, Dirk-Jan & Strucks, Markus & Zeisberger, Stefan, 2022. "History matters: How short-term price charts hurt investment performance," Journal of Banking & Finance, Elsevier, vol. 134(C).
    4. Cookson, J. Anthony & Niessner, Marina & Schiller, Christoph M., 2022. "Can Social Media Inform Corporate Decisions? Evidence from Merger Withdrawals," SocArXiv 56yrj, Center for Open Science.

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    Keywords

    fintech; investor behavior; financial risk-taking; lottery-type assets; investment biases; trend chasing; spillover effects;
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