AMEX comp flatlines at about 3 PM <A HREF="http://finance.yahoo.com/q/bc?s=%5EXAX&t=1d&l=on&z=m&q=l&c=" target="_blank">http://finance.yahoo.com/q/bc?s=%5EXAX&t=1d&l=on&z=m&q=l&c=</A>