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

• Whale Rock Capital Management owns 773382 shares worth $22.34M
• CRCM owns 700000 shares worth $16.14M
• FIL owns 435300 shares worth $12.57M
• CITADEL ADVISORS owns 391595 shares worth $11.31M
• Inves owns 378979 shares worth $10.95M
• Wellington Management Company owns 353693 shares worth $10.22M
• Acadian Asset Management owns 326391 shares worth $8.60M
• Joho Capital owns 252116 shares worth $6.84M
• Schroder Investment Management owns 206400 shares worth $5.96M
• Hellman Jordan Management owns 199800 shares worth $5.77M
• Hermes Pensions Management owns 137577 shares worth $3.97M
• Renaissance Technologies owns 129600 shares worth $3.74M
• Waddell & Reed Financial owns 127800 shares worth $2.70M
• Soros Fund Management owns 110000 shares worth $2.99M
• Allianz Asset Management AG owns 101876 shares worth $2.94M
• Cavalry Management owns 100310 shares worth $2.63M
• Cascabel Management owns 100000 shares worth $2.89M
• J. Goldman & Co owns 100000 shares worth $2.11M
• Jefferies owns 93542 shares worth $2.54M
• S.A.C. Capital Advisors owns 88000 shares worth $2.54M
• Two Sigma Investments owns 85192 shares worth $2.46M
• MCKINLEY CAPITAL MANAGEMENT owns 75941 shares worth $2.19M
• Symmetry Peak Management owns 73150 shares worth $1.92M
• TCS Capital Management owns 70126 shares worth $1.84M
• Barclays owns 69514 shares worth $1.83M
• D. E. Shaw & Co owns 67971 shares worth $1.96M
• WestEnd Capital Management owns 57070 shares worth $1.55M
• Oberweis Asset Management owns 55000 shares worth $1.59M
• Deere & Company owns 54759 shares worth $1.58M
• UBS AG owns 49922 shares worth $1.31M

• Discovery Capital Management sold on Sept. 30, 2011
• Capital Growth Management sold on Sept. 30, 2011
• Norges Bank Investment Management sold on Sept. 30, 2011
• Oxford Asset Management sold on Sept. 30, 2011
• Frank Russell Company sold on Sept. 30, 2011
• Millennium Management sold on Sept. 30, 2011
• PEAK6 Investments sold on Sept. 30, 2011
• Emerging Sovereign sold on June 30, 2011
• GOLDMAN SACHS sold on June 30, 2011
• Sansar Capital Management sold on June 30, 2011
• Contour Asset Management sold on March 31, 2011
• OppenheimerFunds sold on March 31, 2011
• Bank of America Corporation sold on March 31, 2011
• SPINNER ASSET MANAGEMENT sold on March 31, 2011
• FMR sold on Dec. 31, 2010
• Credit Agricole S.A. sold on Dec. 31, 2010
• Balyasny Asset Management sold on Dec. 31, 2010
• Crestwood Capital Management sold on Dec. 31, 2010
• Platinum Investment Mangement sold on Dec. 31, 2010
• MARTIN CURRIE sold on Dec. 31, 2009

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• Google (GOOG)
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• Amazon (AMZN)
• MicroStrategy Incorporated (MSTR)
• CommVault Systems (CVLT)
• Changyou (CYOU)
• Giant Interactive (GA)