The LSE Directory / Alternative data
MSCI ESG Research LLC is a wholly owned subsidiary of MSCI Inc. (NYSE: MSCI) that produces environmental, social and governance ratings, climate risk data and sustainability research for use in investment decisions. Its flagship product, MSCI ESG Ratings, assigns each covered company an industry-relative letter grade from AAA to CCC using a rules-based methodology that scores how well a company manages the ESG risks and opportunities judged most likely to be financially material to its specific sub-industry, with the governance pillar assessed for every company regardless of sector. Ratings are built from public disclosures supplemented by government, NGO, media and other alternative data rather than a company-completed questionnaire, and even companies with minimal direct disclosure still receive a rating based on available information. Coverage extends to more than 17,000 corporate issuers and roughly 999,000 securities globally. The firm's stated differentiator versus other ESG data providers is its financial-materiality filter: only environmental and social issues MSCI judges capable of creating a meaningful cost or benefit for a company's business are scored for that company's industry, rather than scoring every possible corporate-responsibility topic uniformly. Beyond the headline letter rating, MSCI ESG Research sells a climate analytics suite including Implied Temperature Rise, which converts a company's disclosed and projected emissions trajectory into an implied degree of global warming against the remaining carbon budget, Climate Value-at-Risk, a scenario-based model of the financial impact of carbon pricing, regulation and physical climate events, and a Low Carbon Transition score. Its client base is almost entirely institutional: asset managers, pension funds, sovereign wealth funds, endowments, banks and other investment advisers, plus the corporate issuers being rated; the unit does not manage client money or make investment recommendations, and MSCI ESG Research LLC is registered with the SEC as an investment adviser under the Investment Advisers Act of 1940. The business is a rollup of several pioneering ESG research firms rather than a single organic startup. KLD Research and Analytics, founded in 1988, and Innovest Strategic Value Advisors were both acquired by RiskMetrics Group in 2009 (Innovest in February for about 16 million dollars, KLD in November for about 10 million dollars); MSCI then acquired RiskMetrics Group itself in June 2010 in a cash-and-stock deal valued at roughly 1.57 billion dollars, and MSCI ESG Research LLC was assembled on that base, with MSCI dating its ESG Ratings lineage to 1999 through legacy firms KLD, Innovest, IRRC and GMI Ratings, the last of which MSCI ESG Research acquired separately in 2014. MSCI also acquired climate analytics firm Carbon Delta in 2019. Parent company MSCI Inc. employed about 6,100 people as of early 2026 and had more than 16.5 trillion dollars in assets benchmarked to its indexes as of 2025; ESG Research sits alongside MSCI's index, portfolio-analytics and real-estate product lines. In March 2026 MSCI rolled out version 5.0 of the ESG Ratings model, live across its platforms by June 2026, shifting scoring emphasis from documented policy and disclosure toward measurable, financially material performance outcomes; MSCI estimated the update would change the rating of about 37 percent of rated issuers, roughly two-thirds of that from the model change itself and the remainder from routine data refreshes. Regulatory oversight of the ESG ratings industry itself is changing: the EU's ESG Ratings Regulation, Regulation (EU) 2024/3005, took effect on 2 July 2026, bringing ESG rating providers operating in the EU under direct ESMA supervision. MSCI's own legal disclosures state that on 2 July 2026 it notified ESMA of its intention to apply for authorization to operate as a regulated ESG rating provider in the EU, placing it among the global ESG rating agencies moving through that new registration process.
