Why investors have fallen in love with small American firms

Believe itor not, corporate America still makes room for the little guy. Around half of working Americans are employed by a firm with less than 500 workers. Nine in ten banks are community institutions that hold less than $10bn in assets. This rather parochial picture, however, is not reflected in the country’s stockmarket, where the falling number of public companies and extreme concentration of value are a concern. Among America’s 3,000 largest public firms, the biggest 1,000 account for 95% of total value. The next 2,000, which form the Russell 2000 index, are collectively worth less than Apple, the world’s most valuable company.