8. Intuitive Surgical ( ISRG) Company Profile: Intuitive Surgical designs, manufactures and markets its da Vinci robotic surgical systems, EndoWrist instruments, and surgical accessories. 2011 Total Return: 34.5% Current Share Price: $346.87 (Aug. 25) Shares of Intuitive Surgical briefly topped $400 in July after the company posted second-quarter financial results. The company posted earnings of $2.91 a share on revenue of $426 million, which both topped analysts' expectations. The report was strong enough to push Goldman Sachs analysts to upgrade the stock the next day to "neutral" from "sell." Another 11 analysts rate the stock "hold," according to a Bloomberg survey, while the remaining eight say investors should buy the stock. The average price target of $407.73 means analysts expect the stock to rise another 17.5% from current levels.