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

• Empire Capital Management owns 2.55M shares worth $35.55B
• Wellington Management Company owns 1.34M shares worth $18.75M
• RGM Capital owns 1.08M shares worth $15.08M
• MICHAEL R. MURPHY owns 665754 shares worth $9.64M
• FRIESS ASSOCIATES owns 593000 shares worth $12.18M
• Renaissance Technologies owns 585540 shares worth $8.17M
• Vanguard owns 559525 shares worth $7.82M
• Neuberger Berman owns 538484 shares worth $7.52M
• Signia Capital Management owns 489277 shares worth $6.83M
• WALL STREET ASSOCIATES owns 446100 shares worth $8.81M
• Whitman Capital owns 382026 shares worth $7.55M
• Columbus Circle Investors owns 366165 shares worth $7.24M
• Frank Russell Company owns 308300 shares worth $4.40M
• STATE STREET CORPORATION owns 298538 shares worth $4.17M
• S Squared Technology owns 237100 shares worth $3.34M
• Polar Capital owns 236990 shares worth $3.34M
• Coe Capital Management owns 227754 shares worth $4.68M
• Nuveen Asset Management owns 185688 shares worth $0
• Sparta Asset Management owns 182385 shares worth $3.60M
• Portolan Capital Management owns 167276 shares worth $2.42M
• Ardsley Advisory Partners owns 160000 shares worth $2.25M
• Rice Hall James & Associates owns 155952 shares worth $2.20M
• MCKINLEY CAPITAL MANAGEMENT owns 139801 shares worth $2.87M
• ARGENT CAPITAL MANAGEMENT owns 135925 shares worth $1.90M
• Whale Rock Capital Management owns 131585 shares worth $2.70M
• American Century Companies owns 130591 shares worth $2.58M

• Driehaus Capital Management sold on Sept. 30, 2011
• ESSEX INVESTMENT MANAGEMENT sold on Sept. 30, 2011
• Perimeter Capital Partners sold on Sept. 30, 2011
• Manatuck Hill Partners sold on Sept. 30, 2011
• Oberweis Asset Management sold on Sept. 30, 2011
• Eudaimonia Asset Management sold on Sept. 30, 2011
• Pier Capital sold on March 31, 2011
• DePrince Race & Zollo sold on Dec. 31, 2010
• FMR sold on Dec. 31, 2010
• Roumell Asset Management sold on Dec. 31, 2010
• Keane Capital Management sold on Dec. 31, 2010

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