In-House Research and Direct Engagement Overtake ESG Ratings as Investors Top Sustainability Tools

Institutional investors are shifting their approach to sustainability evaluation, increasingly depending on proprietary research and direct corporate engagement rather than external environmental, social, and governance ratings. According to recent findings from the Rate the Raters report published by sustainability consulting firm ERM, trust and perceived quality regarding external ESG ratings have declined over recent years. Despite this trend, reliance on underlying rating data remains embedded in mainstream financial workflows as participants navigate evolving regulatory environments.

Shifting Preferences in Corporate Sustainability Evaluation

The study gathered insights from fifty-three investment industry professionals representing firms that collectively manage an estimated twenty-three and a half trillion dollars in assets across global regions including North America, Europe, the Middle East, Africa, Asia Pacific, and Latin America. Results indicate a notable departure from historical reliance on commercial scores. When asked to evaluate their trust in ESG ratings for accurately assessing sustainability performance, respondents assigned an average score of three point zero five out of five, dropping from three point three one recorded in the prior survey conducted in two thousand twenty-three.

Consequently, the hierarchy of tools utilized for decision-making has experienced a structural reordering. Corporate ESG ratings dropped to seventh place as a useful information source for active investment decisions, falling from the top spot held in the previous study. Internal research methodologies and direct engagement initiatives now occupy the first and second positions respectively, followed closely by corporate sustainability disclosures.

Nuanced Views on Materiality and Regulatory Impacts

Despite declining trust metrics, external scorecards continue to serve operational functions within institutional houses. Over half of the surveyed investment professionals stated that ratings provide data material to investment performance, though this figure experienced a slight decrease. Furthermore, the proportion of participants acknowledging ratings as a credible information source rose to forty-four percent compared to thirty-seven percent previously.

Organizations offering these evaluative products have seen shifts in market perception. Among specific providers, MSCI climbed to the leading position in perceived quality and usefulness, followed by entities such as CDP, EcoVadis, and Standard and Poor Global. Market participants highlighted several areas for future improvement to enhance utility:

• Greater concentration on relevant and material sustainability issues
• Better structural linkage to underlying corporate financial performance
• Improved transparency, disclosure, and quality of assessment methodologies

Looking ahead, market participants anticipate that incoming mandatory reporting rules will alter adoption patterns. A significant majority of respondents expect that regulatory mandates regarding corporate disclosures will drive an increased reliance on structured rating data in coming years, reinforcing the integration of sustainability metrics into broader risk management and portfolio construction strategies.