Under his thumb the effect of president Donald Trump’s Twitter messages on the US stock market

• Heleen Brans ,

  Contributed equally to this work with: Heleen Brans, Bert Scholtens

  Roles Investigation, Methodology, Project administration, Writing – original draft

  Affiliation Department of Finance, Faculty of Economics and Business, University of Groningen, Groningen, The Netherlands

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• Bert Scholtens

  Contributed equally to this work with: Heleen Brans, Bert Scholtens

  Roles Conceptualization, Methodology, Project administration, Supervision, Validation, Writing – review & editing

  * E-mail: l.j.r.scholtens@rug.nl

  Affiliations Department of Finance, Faculty of Economics and Business, University of Groningen, Groningen, The Netherlands, School of Management, University of Saint Andrews, St Andrews, Scotland, United Kingdom

  http://orcid.org/0000-0001-5774-5191

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