S&P 500 Index sector composition over time

Sources: FactSet and Wells Fargo Investment Institute. Biennial data from January 1, 1990 to September 30, 2021. The Telecommunications Services sectors was replaced with the Communications Services sector on September 28, 2018. The composition of the indexes prior to 2018 still reflect the prior sector composition. An index is unmanaged and not available for direct investment. For illustrative purposes only. It does not represent any specific investment or represent the experience of individual investors. See “Index Definitions and Asset Class Risk Disclosures” link above for equity sector risks.

Key Takeaways

  • The S&P 500 Index has changed significantly over the past 30 years. Today, the largest sector within the S&P 500 Index is Information Technology, which did not even exist when the benchmark was created in 1957.
  • The Energy sector weighting shrank from nearly 15% in 2008 to low single digits today as global oil supply has increased and demand growth has stabilized.