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5. Range Resources ( RRC)

Company profile: Range Resources explores for and produces natural gas in the U.S. "The company focuses on unconventional plays, with large acreage positions in the Marcellus Shale, Virginia, Mid-Continent and Permian regions," Morningstar says.

Share performance: up 1,903%

Investors takeout: T. Rowe Price, the biggest shareholder by far, cut its stake by about 20% in the third quarter, bringing its holding to 2.2%.


4. Intuitive Surgical ( ISRG)

Company profile: The company develops, produces and sells a robotic system for assisting minimally invasive surgery called the "da Vinci" system.

Share performance: up 2,195%

Investors takeout: The total number of owners grew by 36% over the past eight quarters to Sept. 30, but the top 10 owners trimmed their stakes by a miniscule amount.

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