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ERM Report Ranks ESG Ratings Agencies and Urges Action to Maintain Business and Investor Trust

ERM Report Ranks ESG Ratings Agencies and Urges Action to Maintain Business and Investor Trust

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ERM, the world’s largest pure play sustainability consultancy, has published its latest assessment of the ESG ratings landscape. Rate the Raters, developed by ERM’s SustainAbility Institute, finds that, while demand is surging, raters face rising concerns from corporates and investors around data accuracy and the overall quality and usefulness of ESG ratings.

More than half of surveyed companies report that they engage with at least six ESG ratings providers. CDP was ranked by corporate survey respondents as the best ESG rater for both quality and usefulness. Investors also rated CDP as the top ESG rating provider for usefulness but perceive ISS-ESG to be the leader on quality. In addition to CDP and ISS-ESG, other ESG ratings most frequently cited by corporates and investors for quality and usefulness are Sustainalytics, MSCI, EcoVadis, and Bloomberg.

Investor demand is the primary driver of engagement with ESG raters, with 57% of companies citing it as their top motivation, followed by performance assessment which was cited by 21%. This reflects the growing integration of ESG ratings and data into investment strategies. Forty-three percent of investor respondents ranked requirements by their firms to integrate ESG ratings and data into their investment practices as a top reason for using ESG ratings providers, compared with just 12% in 2018/19.

However, the report finds that over a quarter (29%) of corporates have low to very low trust that ESG ratings accurately reflect ESG performance, and half (52%) have only moderate trust. Overall corporate perceptions of ESG raters’ quality and usefulness have dropped since 2018/19.

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Investors surveyed demonstrated higher levels of trust, with 59% reporting moderate trust and 38% reporting high to very high trust in ESG ratings providers. However, the survey also reveals a notable trend for investors to develop in-house ESG indicators, metrics, and ratings themselves, reflecting the efforts investors have made in recent years to build their own ESG expertise.

Across both investors and companies, around half see “greater consistency and comparability across ratings methodologies” and “improved quality and disclosure of methodology” as key issues for ESG raters to fix in order to maintain trust.

ERM’s report is published against the backdrop of an increasingly dynamic sustainable investing environment. ESG funds are growing rapidly, and the ESG performance of companies is being intensely scrutinized. Companies also face increasing ESG disclosure requirements, with regulators in the E.U., the U.S., and other regions finalizing far-reaching new rules.

Tom Reichert, ERM Group CEO, said: “We know first-hand how crucial ESG ratings are to spurring action on the sustainability agenda and ensuring the highest performing organizations get the recognition and financing they need. 

“However our survey shows that the ESG ratings industry is at a crossroads. How raters respond to the pressures they face will determine what the field looks like in the decade to come.

“It is in everyone’s interests to ensure that ESG ratings are transparent, robust, and trusted. We look forward to sharing this report to stimulate new discussions around how we can work together to shape a sustainable investment environment that meets the needs of companies, investors, and raters.”


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