As of 2023-01-31
The S&P 500 has a market capitalization of $34.086 trillion dollars. The total market cap is calculated by summing the market capitalization of every company in the index. Each company's calculated market cap is based on the outstanding float share count. The float share count can be less than the total share count outstanding. The floating share count multiplied by the price per share determines the market cap of each company in the index. The total S&P market cap is calculated as of 2023-01-31.