The E and S of Green Firms

Yale economist Kelly Shoe and Boston College professor Samuel Hartzmark analyze what ESG investors think of as green firms and brown firms. They find that about a fifth of firms are responsible for almost all of the environmental impact they have on the world. Green firms tend to be services firms; Think Spotify, Prudential, Goldman Sachs,. Allstate MetLife, American Express is one of the greenest firms in our sample.