Shares of heart-pump maker Thoratec (THOR) -10.8% premarket after reporting weaker-than-expected...

|About: Thoratec Corporation (THOR)|By:, SA News Editor

Shares of heart-pump maker Thoratec (THOR) -10.8% premarket after reporting weaker-than-expected Q3 sales and lowering FY2011 guidance. "This inconsistency is a mark of a market in early development and will not raise confidence in future forecasts," Robert W. Baird's Lawrence Neibor says.