S&P 600 Price, Real-time Quote & News

The S&P 600 is a stock market index tracking the stock performance of 600 companies listed on stock exchanges in the United States that are considered to have small market capitalizations. The S&P 600 is a subset of the S&P 1500, comprising about 2.6% of its market cap as of August 31, 2026. It is maintained by S&P Dow Jones Indices and its components are selected by a committee. The index is a public-float-weighted/capitalization-weighted index. The index includes approximately 2.5% of the total market capitalization of U.S. public companies, with an aggregate market capitalization of more than $1.4 trillion as of December 31, 2025. The median market capitalization of the components of the index is $2.6 billion and components range in market capitalization from $357 million to $12.1 billion. Products linked to the S&P 600 include index funds as well as derivatives, which are available for trading in many countries with the goal of replicating the performance of the index. Wikipedia

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