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Volatile temperatures and their effects on equity returns and firm performance

Author

Listed:
  • Bortolan, Leonardo
  • Dey, Atreya
  • Taschini, Luca

Abstract

We establish the financial materiality of temperature variability by demonstrating its impact on US firms and investors. A long-short strategy that sorts firms based on exposure earns a market-adjusted alpha of 39 basis points per month. This variability metric is related to aggregate decreases in firm profitability, with asymmetric effects across industries. These outcomes are driven by reductions in consumer demand and labor productivity coupled with changes in media and investor attention. The geographically scalable statistical framework provides a reference for assessing the quantitative effects of climate-related physical risks, offering a metric for improving the disclosure of material climate risks.

Suggested Citation

  • Bortolan, Leonardo & Dey, Atreya & Taschini, Luca, 2024. "Volatile temperatures and their effects on equity returns and firm performance," LSE Research Online Documents on Economics 128521, London School of Economics and Political Science, LSE Library.
    • Handle: RePEc:ehl:lserod:128521
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    File URL: http://eprints.lse.ac.uk/128521/
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    More about this item

    Keywords

    corporate climate reporting; climate attention; temperature variability; stock returns; firm performance;
    All these keywords.

    JEL classification:

    • C21 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models
    • C23 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Models with Panel Data; Spatio-temporal Models
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming

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