MSCI ESG Ratings Definition, Methodology, Example (2024)

What Are MSCI ESG Ratings?

MSCI ESG ratings are a comprehensive measure of a company’s long-term commitment to socially responsible investments (SRI) and environmental, social, and governance (ESG) investment standards. In particular, the MSCI ESG ratings focus on a company’s exposure to financially relevant ESG risks.

ESG and SRI investing prioritize a company’s positive contributions to its community, the environment, and social impact. Scoring companies along ESG dimensions allows socially conscious investors to screen potential investments to fit with their investment goals and values.

Key Takeaways

  • MSCI ESG ratings measure a company’s resilience to long-term, financially relevant ESG (environment, social, governance) risks.
  • ESG investing has grown to become an important and influential investment strategy, largely motivated by values of social responsibility and corporate accountability.
  • MSCI’s ESG ratings score along all three dimensions of ESG and rank potential investments on a letter-scale from AAA (leaders) to CCC (laggards).

Understanding MSCI ESG Ratings

ESG investing has become increasingly popular over the past decade. The US SIF: The Forum for Sustainable and Responsible Investment reports that in 2020, more than $17 trillion of professionally managed assets were held in sustainable assets, around one-third of all assets under management. With its growing popularity, data providers have also created various scoring criteria upon which to rank and grade potential ESG investments, allowing socially responsible investors to make more informed decisions when choosing which companies, ETFs, or mutual funds to include in their portfolios.

Alongside MSCI, several other financial firms have developed their own proprietary ESG scoring models, including Russell Investments and Standard & Poors (S&P), among others.

MSCI’s ratings decompose ESG into its three thematic components: the environment, social responsibility, and corporate governance.

Under the environmental dimension, key issues include:

  • contribution to climate change
  • a company’s utilization of "natural capital" (such as biodiversity and raw materials sourcing)
  • pollution and waste management
  • use of green technologies and renewable energy

Under social:

  • health, safety, and human capital development
  • product and consumer safety
  • community relations
  • social opportunities

And, under governance:

  • corporate governance fairness and accountability
  • transparency and ethics

How Do MSCI ESG Ratings Work?

Analyzing metrics within each of these key issue items, MSCI scores the companies that it rates on each key issue from zero to ten, with zero indicating virtually no exposure and ten representing very high exposure to a particular ESG risk or opportunity. MSCI also evaluates companies on exposure to controversial business activities (e.g., weapons, tobacco, gambling, etc.). The data informing these scores are obtained from corporate filings, financial statements, and press releases in addition to almost half of all data coming from hundreds of third-party media, academic, NGO, regulatory, and government sources.

Scores based on individual metrics are aggregated, weighted, and scaled to the relevant industry sector to arrive at an intuitive letter-based grade, akin to lettered credit scores issued by credit rating companies.

Leader/LaggardLetter ScoreNumerical Score
AAA8.571-10.000
LeaderAA7.143-8.570
A5.714-7.142
AverageBBB4.286-5.713
BB2.857-4.285
LaggardB1.429-2.856
CCC0.000-1.428

Source: MSCI

According to MSCI, a "leader" (rated AAA & AA) indicates a company leading its industry in managing the most significant ESG risks and opportunities. "Average" (rated A, BBB, or BB) companies are described by a mixed or unexceptional track record of managing ESG risks and opportunities relative to industry peers; while a "laggard" (rated B or CCC) trails its industry based on its high exposure and failure to manage significant ESG risks.

Real-World Example of MSCI ESG Ratings: Tesla, Inc.

To illustrate how MSCI ESG ratings can be used by investors, let’s take a look at the electric vehicle producer, Tesla, Inc. (TSLA). The company earns an overall grade of "A," putting it on the higher end of "average" among the 41 companies in the car industry rated by MSCI. Digging into its rating, Tesla excels in corporate governance and environmental risks, maintaining a relatively small carbon footprint while both utilizing and investing in green technologies. The company scores an average grade for product quality and safety, with the company making headlines in the past for exploding batteries, undesirable crash test ratings, and accidents involving the cars’ self-driving "autopilot" feature – although CEO Elon Musk has publicly announced a commitment to improving both driver and bystander safety.

What truly drags down Tesla’s MSCI ESG rating is its below-average score for product quality and safety. The battery banks in its cars have been known to spontaneously combust and the National Transportation Safety Board (NTSB) has accused Tesla for neglecting driver safety, calling certain Autopilot features "completely inadequate" and citing Autopilot as the probable cause of several deadly crashes involving Tesla cars.

Tesla has also been criticized for its labor management practices. For instance, the company has been found to be in violation of labor laws by blocking unionization, and that it has violated the National Labor Relations Act multiple times. More recently, the company’s leadership has come under fire for keeping plants open and unsafe during the COVID-19 pandemic, leading several of its workers to come down with the illness.

Despite earning only an "average" score, it is worth noting that only one company covered in the auto industry (including both automobiles and auto parts) currently earns "leader" status on MSCI’s ESG ratings – the French auto parts maker, Valeo SE.

What Is ESG in Investing?

Environmental, social, and governance (ESG) criteria are used to screen investments based on corporate policies and to encourage companies to act responsibly. ESG also helps investors who care about these issues to screen for those companies that rank highly in social and environmental responsibility.

What Is MSCI's Implied Temperature Rise?

MSCI has recently developed an ESG screening criterion known as Implied Temperature Rise (ITR), whichis an intuitive, forward-looking metric, expressed in degrees Celsius, designed to show the temperature alignment of companies, portfolios, and funds with global temperature goals. Implied Temperature Rise can help investors assess the environmental alignment of companies, portfolios, funds, and benchmarks with net-zero carbon emissions targets by the middle of this century.

How Many Companies Does MSCI's ESG Ratings Cover?

As of 2022, MSCI has ESG ratings for more than 8,500 companies worldwide.

Investopedia requires writers to use primary sources to support their work. These include white papers, government data, original reporting, and interviews with industry experts. We also reference original research from other reputable publishers where appropriate. You can learn more about the standards we follow in producing accurate, unbiased content in oureditorial policy.

  1. US SIF: The Forum for Sustainable and Responsible Investment. "The US SIF Foundation’s Biennial “Trends Report” Finds That Sustainable Investing Assets Reach $17.1 Trillion."

  2. S&P Global Ratings. “ESG Evaluation,” Page 2.

  3. Russell Investments. "Materiality Matters,” Page 1.

  4. MSCI. "MSCI ESG Ratings Methodology, Executive Summary," Page 4.

  5. MSCI. "MSCI Sustainable Select Index Methodology," Page 7.

  6. MSCI. "MSCI Sustainable Select Index Methodology," Pages 11-12.

  7. MSCI. "MSCI Sustainable Select Index Methodology," Page 7.

  8. MSCI. "MSCI ESG Ratings Methodology, Executive Summary," Page 11.

  9. MSCI. "ESG Ratings."

  10. MSCI. "ESG Ratings & Climate Search Tool: Tesla."

  11. Washington Post. "Tesla Model S erupts in flames, prompting NHTSA to step in."

  12. Reuters. "US NTSB head criticizes Tesla over vehicle self-driving feature."

  13. U.S. Securities and Exchange Commission. “Notice of Exempt Solicitation Pursuant to Rule 14a-103.”

  14. Tesla. “Impact Report 2020,” Page 56.

  15. Tesla. “Tesla Operational Update.”

  16. MSCI. "ESG Ratings & Climate Search Tool: Valeo SE."

  17. MSCI. "What is Implied Temperature Rise (ITR)?"

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MSCI ESG Ratings Definition, Methodology, Example (2024)

FAQs

What is the ESG MSCI rating methodology? ›

MSCI ESG Fund Ratings include over 300 metrics in seven categories: summary, risk, impact, values alignment, Sustainable Development Goals (SDG) alignment, climate change, and European Union (EU) sustainable finance. Metrics are calculated using the weighted average of a given metric.

What is the ESG score methodology? ›

The category scores are rolled up into three pillar scores – environmental, social and corporate governance. The ESG pillar score is a relative sum of the category weights, which vary per industry for the environmental and social categories. For governance, the weights remain the same across all industries.

What is the methodology of ESG rating agencies? ›

ESG rating agencies

collect data on all kinds of factors, such as greenhouse gas emissions, working procedures, diversity of company boards, and engagement with communities, to evaluate the company's overall performance.

What is the ESG corporate rating methodology? ›

ESG ratings and methodologies evaluate the sustainability and societal impacts of organizations. They give investors and companies insight into how well a company is doing in environmental responsibility, labour practices, and corporate governance.

What is the MSCI EM IMI ESG Screened index methodology? ›

The MSCI ESG Screened Indexes use company ratings and research provided by MSCI ESG Research. In particular, the Indexes use the following MSCI ESG Research products: MSCI ESG Controversies, MSCI Business Involvement Screening Research and MSCI Climate Change Metrics.

How do you reference an MSCI ESG rating? ›

Companies may reference their MSCI ESG Rating in the following way: “In [YEAR], [COMPANY] received a rating of [RATING] (on a scale of AAA- CCC) in the MSCI ESG Ratings assessment.” “As of [YEAR], [COMPANY] received an MSCI ESG Rating of [LETTER RATING].”

What is the Bloomberg ESG rating methodology? ›

Bloomberg ESG scores are constructed at the BECS Level 3 - Peer Group level. The Overall ESG score evaluates a company's aggregated ESG performance, across E, S and G Pillars. The score is based on Bloomberg's view of ESG financial materiality.

What is the methodology of Bloomberg ESG score? ›

Bloomberg's ES Scores are fully transparent, showing the connection between each score and the company-reported data driving it. The ES Scores methodology, available on BESG <GO>, provides details on overall approach, industry-specific drivers, quantitative methods and all model inputs.

What is the Thomson Reuters ESG score methodology? ›

Thomson Reuters ESG Scores are calculated and available for all companies and historical fiscal periods in the ESG Global Coverage, consisting of 6,000+ public companies globally. ESG Score is an overall company score based on the self-reported information in the environmental, social and corporate governance pillars.

How do rating agencies and ESG methodologies compare? ›

ESG rating works similarly to credit rating. Credit rating agencies assess companies based on financial factors. Usually, their results are closely related and systematic owing to the use of similar, well-defined ratios. Most analyses performed by ESG agencies are based on non-financial data.

How are ESG ratings measured? ›

MSCI's ESG ratings look at 1000+ data points (KPIs, policies, targets, etc.), considering exposure metrics (how exposed is the company to industry material issues), management metrics (how is the company managing each issue), and 35 ESG key Issues.

What are the three primary approaches to measuring a company's ESG performance? ›

Understanding ESG Performance

When it comes to comparing ESG ratings, three main approaches are used by investors: Comparing ratings to peers managing comparable portfolios. Leveraging a standard industry benchmark index.

What is the ESG rating methodology Refinitiv? ›

ESG scores from Refinitiv are designed to transparently and objectively measure a company's relative ESG performance, commitment and effectiveness, based on company-reported data. This covers 10 main themes including emissions, environmental product innovation, human rights, shareholders and so on.

What is the ESG scoring methodology Refinitiv? ›

Refinitiv® ESG Scores are designed to transparently and objectively measure a company's relative ESG performance, commitment and effectiveness across the three E, S and G pillars and 10 themes (emissions, environmental product innovation, human rights, shareholders, etc…) based on publicly reported data.

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