The S&P 500 market index has been a reliable tool for gauging the economy for decades. The team at Madison Trust Company brings us unique insight into that world with a timeline of the comings and goings of S&P companies.
Companies added to the S&P 500 must meet a few qualifications. They must be publicly traded companies in the U.S. and account for 80% of the total U.S. market cap. As we watched the changes in the timeline, we can see how the economy has shifted. Tech companies appeared on the list in the 80s, and companies like Microsoft and IBM appeared on the list. The most recent newcomers are Lennox International, Workday Inc., and Apollo Global Management, added to the list in December 2024. The timeline also tracks different sectors of business represented in the S&P 500.
infographic by: madisontrust.com
