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The S&P 500 is a stock market index maintained by S&P Dow Jones Indices.It comprises 503 common stocks which are issued by 500 large-cap companies traded on the American stock exchanges (including the 30 companies that compose the Dow Jones Industrial Average).
It is one of the most commonly followed equity indices and includes approximately 80% of the total market capitalization of U.S. public companies, with an aggregate market cap of more than $43 trillion as of January 2024. [2] [6] The S&P 500 index is a free-float weighted/capitalization-weighted index.
The following is a list of publicly traded companies having the greatest market capitalization, sometimes described as their "market value": [1]. Market capitalization is calculated by multiplying the share price on a selected day and the number of outstanding shares on that day.
The top 10 companies by market cap in the S&P 500 comprise 37.6% of the index. And the top 25 companies make up 50% of the index. That means just 5% of companies are responsible for half of the S ...
Given the benchmark's market cap distribution, which allows larger stocks to contribute more to the index's movements, the S&P 500 has added about 19% this year. ... Magnificent Seven's net profit ...
List of trillion-dollar companies *Market cap data as of Dec. 13, 2024. 1. Apple (AAPL) Apple designs and makes a variety of consumer tech products and has one of the best-known brands in the ...
However, the S&P 100 actually includes 101 larger US company stocks due to holding two different share classes of Alphabet Inc. Constituents of the S&P 100 are selected for sector balance and represent nearly 71% of the market capitalization of the S&P 500 and 61% of the market capitalization of the U.S. equity markets as of December 2024.
For example, if Company A had 20 million shares outstanding and a share price of $500, its market cap is as follows: $500 x 20,000,000 = $10,000,000,000 market capitalization