This copy is for your personal, non-commercial use only. To order presentation-ready copies for distribution to your colleagues, clients or customers visit http://www.djreprints.com. To the Editor: Small-cap stocks have underperformed this year because many individual investors have been liquidating stocks and mutual funds (“Small-Caps Break Out,” Cover Story, Dec. 6). Pension funds and other large investors have focused on S&P 500 index companies. The Russell 2000 index “broke out” this week when the weekly average inflows into equity funds rose to $2.9 billion for the first time in months.