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Using Social Media to Identify the Effects of Congressional Viewpoints on Asset Prices

Author

Listed:
  • Francesco Bianchi
  • Roberto Gómez-Cram
  • Howard Kung

Abstract

We use a high-frequency identification approach to document that individual politicians affect asset prices. We exploit the regular flow of viewpoints contained in Congress members’ tweets. Supportive (critical) tweets increase (decrease) the stock prices of the targeted firm and the corresponding industry in minutes around the tweet. The bulk of the stock price effects is concentrated in the tweets revealing news about future legislative action. The effects are amplified around committee meeting days, especially when the tweet originates from committee members and influential politicians. Overall, we show that Congress members’ social media accounts are an important source of political news.

Suggested Citation

  • Francesco Bianchi & Roberto Gómez-Cram & Howard Kung, 2024. "Using Social Media to Identify the Effects of Congressional Viewpoints on Asset Prices," The Review of Financial Studies, Society for Financial Studies, vol. 37(7), pages 2244-2272.
    • Handle: RePEc:oup:rfinst:v:37:y:2024:i:7:p:2244-2272.
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    File URL: http://hdl.handle.net/10.1093/rfs/hhae001
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    More about this item

    JEL classification:

    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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