Is SCOR a good stock to own? Find out who bought COMSCORE, who sold COMSCORE (SCOR) stock, and who holds a large position in COMSCORE.

• Cadian Capital Management owns 3.62M shares worth $60.71M
• PRIMECAP Management Company owns 3.38M shares worth $56.67M
• Sageview Capital owns 2.92M shares worth $48.99M
• Vanguard owns 1.91M shares worth $32.10M
• Frontier Capital Management owns 1.22M shares worth $16.79M
• HMI Capital owns 1.15M shares worth $15.78M
• Pivot Point Capital Partners owns 1.08M shares worth $23.11M
• Manning & Napier Advisors owns 724930 shares worth $15.51M
• KALMAR INVESTMENTS INC /DE/ owns 686788 shares worth $10.47M
• STATE STREET CORPORATION owns 672868 shares worth $11.29M
• ClearBridge Advisors owns 640751 shares worth $10.75M
• Chartwell Investment Partners owns 620255 shares worth $10.21M
• Pier Capital owns 618187 shares worth $13.11M
• Inves owns 493234 shares worth $10.46M
• Conestoga Capital Advisors owns 490361 shares worth $7.48M
• William Blair $ Company owns 483666 shares worth $7.96M
• Frank Russell Company owns 482572 shares worth $8.35M
• Stephens Investment Management owns 461746 shares worth $7.04M
• Principal Financial owns 449472 shares worth $7.40M
• ZWJ Investment Counsel owns 418045 shares worth $7.01M
• Schroder Investment Management owns 409200 shares worth $6.24M
• Fort Washington Investment Advisors owns 406347 shares worth $6.82M
• S.A.C. Capital Advisors owns 366309 shares worth $6.15M
• Summit Creek Advisors owns 344350 shares worth $5.78M

• FRED ALGER MANAGEMENT sold on Sept. 30, 2011
• Kingdon Capital Management sold on Sept. 30, 2011
• Polar Capital sold on Sept. 30, 2011
• T. Rowe Price Associates sold on Aug. 12, 2011
• Criterion Capital Management sold on June 30, 2011
• GOLDMAN SACHS sold on June 30, 2011
• Columbus Circle Investors sold on June 30, 2011
• Next Century Growth Investors sold on June 30, 2011
• OppenheimerFunds sold on June 30, 2011
• Sparta Asset Management sold on March 31, 2011
• Wells Fargo & Company sold on March 31, 2011
• Henderson sold on Dec. 31, 2010
• Sandler Capital Management sold on Dec. 31, 2010
• Arbor Capital Management sold on Dec. 31, 2010
• M A WEATHERBIE & CO sold on Dec. 31, 2010
• Maverick Capital sold on Sept. 30, 2008