S&P_600
S&P 600
Stock market index
The S&P SmallCap 600 Index (S&P 600) is a stock market index established by S&P Global Ratings. It covers roughly the small-cap range of American stocks, using a capitalization-weighted index.
To be included in the index, a stock must have a total market capitalization that ranges from $900 million to $5.8 billion.[1] These market cap eligibility criteria are for addition to an index, not for continued membership. As a result, an index constituent that appears to violate criteria for addition to that index is not removed unless ongoing conditions warrant an index change.[1]
Additionally, same as S&P 500 and S&P 400, there is a financial viability requirement. Companies must have positive as-reported earnings over the most recent quarter, as well as over the most recent four quarters (summed together).
As of 29 December 2023[update], the index's median market cap was $1.74 billion and covered roughly three percent of the total US stock market. These smallcap stocks cover a narrower range of capitalization than the companies covered by the Russell 2000 Smallcap index which range from $169 million to $4 billion,[2] excluding some of the smallest companies. The S&P 400 MidCap index combined with the SmallCap 600 compose the S&P 1000, and the S&P 1000 plus the S&P 500 compose the S&P 1500. The index was launched on October 28, 1994[3] and its ticker symbols are either SML, ^SML, SP600 or ^SP600 depending on the financial website.