List of S&P 400 companies
Below is a list of companies having stocks that are included in the S&P MidCap 400 (S&P 400) stock market index. The index, maintained by S&P Dow Jones Indices, comprises the common stocks of 400 mid-cap, mostly American, companies. Although called the S&P 400, the index sometimes contains more than 400 stocks when it includes two or more share classes of stock from one of its component companies.