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The Determinants of ESG Ratings: Rater Ownership Matters

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  • Dragon Yongjun Tang
  • Jiali Yan
  • Yaqiong Yao

Abstract

We examine whether and how common ownership affects Environmental, Social, and Governance (ESG) ratings—an important research question given the increasing use of these ratings in investment decisions and corporate evaluations. We find that companies with major shareholders in common with the rating agency (“sister firms”) tend to receive higher ESG ratings. When a company becomes a sister firm through a change in the rating agency's ownership structure, its rating from that agency is subsequently upgraded, whereas its ESG ratings from other agencies remain unchanged. Sister firms exhibit greater rating disagreements across agencies than other firms. The higher ESG ratings for sister firms are partly attributable to the transfer of immaterial positive ESG information through common owners. The common ownership effect is more pronounced when the owner can exert a greater influence on the rating agency. Moreover, sister firms with initially elevated ratings demonstrate poorer future ESG performance. Overall, our findings suggest that owners can affect ESG ratings of their portfolio companies in a way consistent with their influence and interest.

Suggested Citation

  • Dragon Yongjun Tang & Jiali Yan & Yaqiong Yao, 2026. "The Determinants of ESG Ratings: Rater Ownership Matters," Journal of Accounting Research, John Wiley & Sons, Ltd., vol. 64(2), pages 1087-1130, May.
    • Handle: RePEc:bla:joares:v:64:y:2026:i:2:p:1087-1130
    DOI: 10.1111/1475-679X.70016
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