Sustainalytics is a company that rates the sustainability of listed companies based on their environmental, social and corporate governance (ESG) performance. The company was born from a merger between Toronto-based Jantzi Research, which was founded in 1992 by Sustainalytics' current CEO Michael Jantzi, and its European counterpart. In October 2017, the firm had offices in 13 cities around the world and served more than 450 institutional investor clients.