The Russell 2000 index , which tracks smaller company stocks , fell 1.40 , or 0.3 percent , to 408.83 .
The Russell 2000 index , the barometer of smaller company stocks , fell 2.52 to 410.23 .
The program spreads further only when a computer user selects the attached program that then secretly mails itself to e-mail addresses stored in the user 's computer .