Thoratec (THOR +5.3%) trades higher today after Wells Fargo ups the shares to Outperform and...

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

Thoratec (THOR +5.3%) trades higher today after Wells Fargo ups the shares to Outperform and raises its valuation by roughly 20%. The move comes a day after the FDA approved rival HeartWare International's (HTWR -5.4%) heart-pumping device, and Wells notes that THOR's competing product showed a lower incidence of stroke in recent trials.