Company level ESG ratings from different rating agencies show low correlation due to differences in their methodologies. As a result, investors must reconcile these differences for themselves…
— An Evolution in ESG Indexing; BlackRock (2018)
Investors should not treat ESG scores as settled facts to be used on their own, but as potentially worthwhile analysis that needs to be understood before being acted on…
— Is Tesla or Exxon More Sustainable? It Depends Whom You Ask; The Wall Street Journal (2018)