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Thoratec Announces Presentations at Upcoming Investor Conferences Nov 7, 2011 05:00PM
Notable Analyst Rating Changes 04/18: (AONE) (KBH) (CBEY) Upgraded; (MRVL) (CIM) (GPS) Downgraded Apr 18, 2011 10:58AM
Lazard Capital Upgrades Thoratec (THOR) to Buy Apr 18, 2011 10:31AM
Notable Analyst Rating Changes 01/28: RAX, NVDA, GE, BPZ Upgraded; T, INFN, THOR, AMZN Downgraded Jan 28, 2011 10:53AM
Notable Analyst Rating Changes 11/11: INTC, SVA, SCCO, MRT Upgraded; CSCO, AA, THOR, FTR Downgraded Nov 11, 2010 11:25AM


Jun 28, 2010 11:52AM Lazard Capital Upgrades Thoratec Corporation (THOR) to Hold
Feb 18, 2010 10:47AM Notable Analyst Rating Changes 02/18: BEAT, CRM, FSLR, NUE Upgrades; XNPT, CSCX, NTAP, THOR Downgraded
Feb 18, 2010 09:01AM Lazard Capital Downgrades Thoratec (THOR) to Sell
Jul 30, 2009 09:28AM Lazard Capital Downgrades Thoratec (THOR) to Hold
Sep 4, 2008 05:13PM Lazard Upgrades Thoratec (THOR) to Hold