ESG Investing: Criteria, Ratings, and Strategies
ESG (Environmental, Social, and Governance) investing incorporates non-financial factors into investment analysis to evaluate material risks and opportunities. Environmental criteria assess a company's carbon footprint, water use, biodiversity impacts, waste management, and exposure to climate regulation risk. Social criteria assess labor practices, supply chain standards, community relations, product safety, and data privacy. Governance criteria assess board independence, executive compensation, shareholder rights, transparency, and anti-corruption practices. ESG data providers (MSCI, Sustainalytics, S&P Global, Bloomberg) score companies on these dimensions, enabling investors to screen portfolios. ESG strategies vary: negative screening excludes specific industries (fossil fuels, weapons, tobacco); positive screening selects best-in-class companies within each sector; thematic investing focuses on specific sustainability themes (renewable energy, water infrastructure, sustainable agriculture); impact investing targets measurable social and environmental outcomes alongside financial returns. Performance: a 2022 Morgan Stanley Institute for Sustainable Investing analysis of 3,000 funds found that sustainable equity funds had median annualized returns 1.1% higher than traditional funds from 2004–2021, with lower downside risk during market crashes. Key caveat: ESG ratings are inconsistent across providers — a company can receive an 'A' from MSCI and a 'C' from Sustainalytics due to different weighting methodologies. Investigate multiple sources before concluding a company is 'sustainable.'