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Responding to criticisms of ESG ratings

September 2019

As ESG becomes more mainstream, investment management firms are being challenged to find the best way to incorporate ESG data into their investment process. While many investment managers now recognize that ESG factors are material, there is still some confusion and skepticism about the reliability and viability of ESG data2.

One of the most pointed areas of criticism within the ESG space has to do with the perceived shortcomings of ESG ratings and scores.

To better understand these criticisms, we want to take this opportunity to briefly discuss the advantages and disadvantages of the different approaches to generating ESG data. Specifically, we will cover two key points: (1) Why self-reported data is not reliable data, and (2) How AI can unlock insights from ESG data.

1. Why self-reported data is not reliable data — especially when it comes to risks
In a world in which companies are 100% transparent and ESG disclosures are standardized, company selfreporting could be used to create robust ESG ratings that accurately reflect how a business deals with different issues. This world does not yet exist. Instead, companies are selectively transparent about what they disclose, which masks relevant ESG risks and calls into question the usability of such ratings to guide investment decisions.1

The major providers of ESG ratings – MSCI and Sustainalytics – have themselves admitted that there are issues with consistency and comparability of ESG disclosures, and as a result are now altering their research methodology to better incorporate external information.2 3

And how RepRisk addresses this problem

At RepRisk, we have always taken an outside-in approach by intentionally not considering any self-reporting in our research. Instead, we analyze more than 90,000 publicly available sources in 20 languages to identify material ESG risks related to specific companies or infrastructure projects. This helps ensure that our data is consistent and objective, allowing our clients to determine whether companies are actually walking the walk, instead of just talking the talk.

2. How AI can unlock insights from ESG data
Another increasingly popular approach among ESG data providers is using technology – such as artificial intelligence and machine learning – to comb through massive sets of unstructured data composed of everything from news articles to government reports. However, this approach comes with its own challenges, mainly the question of how to sort that data into specific and actionable insights that can be used to make better-informed investment decisions.

And how RepRisk addresses this problem

RepRisk pioneered the practice of ESG data science in 2006, becoming the first firm to leverage big data techniques to better understand ESG risks. We recognized from day one that the strength and scalability of any machine learning algorithm is dependent on the quality of the source material.

To maintain this quality, we rely on our team of 80+ highly trained analysts to curate and analyze each risk incident according to a systematic, rules-based methodology. Using this methodology, we have painstakingly built an annotated (i.e. human-labelled) dataset that dates back to January 2007. This dataset comes with two key advantages: (1) it allows us to deploy advanced machine learning to train our algorithms to be more accurate and effective, and (2) it gives us and our clients access to an unbroken time series of high-quality data that can be used for rigorous back-testing and quantitative analysis.

Thanks to this approach, we now have the world's largest and most comprehensive database on ESG and business conduct risks, with unique risk profiles for 130,000+ public and private companies and 30,000+ projects. Our AI and machine learning capabilities empower size and scale of our database, while our human intelligence adds depth and relevance to the data.

We would never claim that any individual ESG rating, data point, or metric is a perfect way to understand a company's behavior and performance. Instead, we view each of these data points as a tool that can be used to get a more complete picture of a company's behavior and intentions. Ultimately, it's still up to each investment manager to complement any third-party data with their own in-house research and investment processes.

Here are some additional sources that provide a perspective on the opportunities and challenges of using ESG data and ESG ratings:


[1] According to SASB, just 10% of companies are integrating sustainability metrics into their 10-K filings.
[3] For example, CSRHub has found that the correlation between the ESG ratings offered by MSCI and Sustainalytics is just 0.32 for companies in the S&P Global 1200 index.