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- Historical Market Capitalizations of current & past S&P 500 companies between 3/31/1979 and 12/31/2016. The dataset includes the market values for 1,366 different companies.
- The market caps are available for the last day of each quarter between 3/31/1979 and 12/31/2004 and for the last day of each month since 1/31/2005.
- The data is in Excel format. Check the sample file to see what the data looks like.
- Data quality guaranteed by Siblis Research but if you are not fully happy with the data for any reason you are entitled to a full refund.