The 10 largest companies in the S&P 500 by their share of the S&P 500's total market cap from 1985 to 2024.
Data comes from Goldmans Sachs and the American Enterprise Institute.
Key Takeaways
Tech companies barely appeared in the top 10 before 2000 but now make up the majority by 2024.
Consumer staples and iconic brands like Phillip Morris and Coca-Cola were once giants in the S&P 500 but no longer crack the top rankings.
Oil was ruled the market, with Exxon Mobil consistently ranking near the top from 1985 through 2005 before being overtaken by tech.
