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Aggregate Confusion: The Divergence of ESG Ratings
[Corporate social responsibility and firm risk: theory and empirical evidence]

Author

Listed:
  • Florian Berg
  • Julian F Kölbel
  • Roberto Rigobon

Abstract

This paper investigates the divergence of environmental, social, and governance (ESG) ratings based on data from six prominent ESG rating agencies: Kinder, Lydenberg, and Domini (KLD), Sustainalytics, Moody’s ESG (Vigeo-Eiris), S&P Global (RobecoSAM), Refinitiv (Asset4), and MSCI. We document the rating divergence and map the different methodologies onto a common taxonomy of categories. Using this taxonomy, we decompose the divergence into contributions of scope, measurement, and weight. Measurement contributes 56% of the divergence, scope 38%, and weight 6%. Further analyzing the reasons for measurement divergence, we detect a rater effect where a rater’s overall view of a firm influences the measurement of specific categories. The results call for greater attention to how the data underlying ESG ratings are generated.

Suggested Citation

  • Florian Berg & Julian F Kölbel & Roberto Rigobon, 2022. "Aggregate Confusion: The Divergence of ESG Ratings [Corporate social responsibility and firm risk: theory and empirical evidence]," Review of Finance, European Finance Association, vol. 26(6), pages 1315-1344.
    • Handle: RePEc:oup:revfin:v:26:y:2022:i:6:p:1315-1344.
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    File URL: http://hdl.handle.net/10.1093/rof/rfac033
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    References listed on IDEAS

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    More about this item

    Keywords

    Corporate social responsibility; Corporate sustainability; ESG ratings; Divergence;
    All these keywords.

    JEL classification:

    • M14 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Business Administration - - - Corporate Culture; Diversity; Social Responsibility
    • G24 - Financial Economics - - Financial Institutions and Services - - - Investment Banking; Venture Capital; Brokerage

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