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A trillion dollars race—how ChatGPT affects stock prices

Author

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  • Marcin Pietrzak

    (Polish Academy of Sciences)

Abstract

This study examines the short-term stock market impact of ChatGPT-related corporate announcements among the universe of the US-listed companies. Using the event study method, it identifies statistically significant abnormal returns for firms referencing ChatGPT in SEC filings between January and May 2023. The findings reveal sectoral differences: the information technology sector consistently benefits, while financials and energy face heightened risks. Firm-specific factors, such as market capitalization, beta, and company age, are associated with the magnitude of market reactions. This research highlights the transformative potential of generative AI on capital markets and offers valuable insights for investors, policymakers, and future technological adoption.

Suggested Citation

  • Marcin Pietrzak, 2025. "A trillion dollars race—how ChatGPT affects stock prices," Future Business Journal, Springer, vol. 11(1), pages 1-16, December.
    • Handle: RePEc:spr:futbus:v:11:y:2025:i:1:d:10.1186_s43093-025-00470-5
    DOI: 10.1186/s43093-025-00470-5
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    More about this item

    Keywords

    Market reaction; ChatGPT; AI; Generative; Stock markets; Event study;
    All these keywords.

    JEL classification:

    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G30 - Financial Economics - - Corporate Finance and Governance - - - General
    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes

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