The S&P SmallCap 600 (S&P 600) stock market index, maintained by S&P Dow Jones Indices, comprises the common stocks of 600 small-cap, mostly American, companies. Although called the "S&P 600", the index contains 603 stocks because it includes two share classes of stock from three of its component companies (Central Garden & Pet Company, Clearway Energy and Under Armour).

Stocks here are cross referenced with the following index funds to compose the list: Vanguard S&P Small-Cap 600 ETF () SPDR Portfolio S&P 600 Small Cap ETF () iShares Core S&P Small-Cap ETF () These index funds may be reconstituted at different intervals resulting in a small difference in holdings.

S&P 600 component stocks

The companies listed here are sorted alphabetically by ticker symbol by default.