Irrational Exuberance?

Monday, 26 Feb 2007 | 2:05 PM ET

Weâ??ve gone nearly four years without a single day of losses on the S&P exceeding 2%. CNBCâ??s Erin Burnett discusses whether todayâ??s markets are just exuberant or irrationally exuberant with Robert Balentine President Wilmington Trust Investment Mgmt. CEO, and Howard Silverblatt, S&P sr. index analyst