May 3, 2013 10:58AM Piper Jaffray Downgrades Westport Innovations (WPRT) to Neutral
Oct 31, 2012 09:32AM Pre-Open Movers 10/31: (WRC) (OPNT) (GNRC) Higher; (WU) (CRNT) (FB) Lower (more...)
Jun 11, 2012 11:42AM China Trucking Shift to Natural Gas to Benefit Westport Innovations (WPRT)
Apr 10, 2012 11:52AM Notable Analyst Rating Changes 04/10: (HOG) (DELL) (AIG) Upgraded; (ALTH) (FHN) (JEC) Downgraded
Apr 10, 2012 07:38AM Piper Jaffray Starts Westport Innovations (WPRT) at Overweight
Nov 5, 2010 11:04AM Notable Analyst Rating Changes 11/05: NVDA, AXP, PCS, TC Upgraded; BIG, PT, CLWR, WPRT Downgraded