The S&P 500 ESG Index Turns 5! Margaret Dorn Senior Director, Head of ESG Indices, North America S&P Dow Jones Indices The S&P 500® ESG Index celebrated its fifth birthday on Jan. 28, 2024. Over the past five years, the index has become an important piece of the sustainable indexing puzzle for investors looking to leverage the strength of the S&P 500 while incorporating meaningful and measurable sustainability-focused enhancements.