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Learning about Unprecedented Events: Agent-Based Modelling and the Stock Market Impact of COVID-19

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  • Bazzana, Davide
  • Colturato, Michele
  • Savona, Roberto

Abstract

We model the learning process of market traders during the unprecedented COVID-19 event. We introduce a behavioral heterogeneous agents’ model with bounded rationality by including a correction mechanism through representativeness (Gennaioli et al., 2015). To inspect the market crash induced by the pandemic, we calibrate the STOXX Europe 600 Index, when stock markets suffered from the greatest single-day percentage drop ever. Once the extreme event materializes, agents tend to be more sensitive to all positive and negative news, subsequently moving on to close-to-rational. We find that the deflation mechanism of less representative news seems to disappear after the extreme event.

Suggested Citation

  • Bazzana, Davide & Colturato, Michele & Savona, Roberto, 2021. "Learning about Unprecedented Events: Agent-Based Modelling and the Stock Market Impact of COVID-19," FEEM Working Papers 314928, Fondazione Eni Enrico Mattei (FEEM).
    • Handle: RePEc:ags:feemwp:314928
    DOI: 10.22004/ag.econ.314928
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    Farm Management; Risk and Uncertainty;

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