“Two companies, Morningstar and Truvalue Labs, represent two distinctly different ways to assess companies on ESG data.”

[COMMENTARY] I say there’s a need for both and even more variety of opinions. What makes a person a buyer of a stock and the other a seller? More often than not, it’s one’s assessment of future returns. Hence, diversity of opinion is what stock markets — and thus ratings — are all about.
Man vs. machine: A tale of two sustainability ratings systems, by Mark Tulay, May 25, 2020, GreenBiz, USA.