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Heroes, just for one day: The impact of Donald Trump’s tweets on stock prices

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  • Machus, Tobias
  • Mestel, Roland
  • Theissen, Erik

Abstract

We analyze the effect of Donald Trump’s tweets on individual stock returns. We use intraday (minute-by-minute) data in order to uncover causal effects of the tweets on prices and trading activity. We find that the tweets cause increased trading activity but do not have lasting effects on stock prices. We also find evidence of abnormal returns, increased trading volume and increased investor attention before the tweets. This finding is consistent with Donald Trump’s tweets not providing new information but rather being comments on events that happened, and already attracted investor attention, before the tweet.

Suggested Citation

  • Machus, Tobias & Mestel, Roland & Theissen, Erik, 2022. "Heroes, just for one day: The impact of Donald Trump’s tweets on stock prices," Journal of Behavioral and Experimental Finance, Elsevier, vol. 33(C).
    • Handle: RePEc:eee:beexfi:v:33:y:2022:i:c:s2214635021001386
    DOI: 10.1016/j.jbef.2021.100594
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    1. Dragomirescu-Gaina, Catalin & Philippas, Dionisis & Goutte, Stéphane, 2023. "How to ‘Trump’ the energy market: Evidence from the WTI-Brent spread," Energy Policy, Elsevier, vol. 179(C).

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    More about this item

    Keywords

    Trump tweets; Market reactions; Investor attention; Media attention;
    All these keywords.

    JEL classification:

    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G15 - Financial Economics - - General Financial Markets - - - International Financial Markets

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