Matrix USA Rating Changes 3/4 Mar 4, 2008 09:44AM

Upgrades:
American Electric Power (NYSE: AEP) from Hold to Buy; Aspen Technology (Nasdaq: AZPN) from Sell to Hold; BE Aerospace (Nasdaq: BEAV) from Buy to Strong Buy; Bristol-Myers Squibb (NYSE: BMY) from Sell to Buy; El Paso Corp. (NYSE: EP) from Hold to Buy; Infospace (Nasdaq: INSP) from Strong Sell to Sell; Integrys Energy Group (NYSE: TEG) ...