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

• Paulson & Co owns 4.93M shares worth $137.26M
• Vanguard owns 3.20M shares worth $89.55M
• Halcyon Offshore Asset Management owns 1.90M shares worth $52.84M
• STATE STREET CORPORATION owns 1.81M shares worth $42.06M
• Carlson Capital owns 1.40M shares worth $38.79M
• Harvard Management Company owns 1.29M shares worth $36.05M
• Ameriprise Financial owns 1.20M shares worth $33.42M
• Global Thematic Partners owns 1.11M shares worth $30.97M
• Alkeon Capital Management owns 1.03M shares worth $19.21M
• Thrivent Financial for Lutherans owns 978311 shares worth $18.20M
• T. Rowe Price Associates owns 955400 shares worth $26.75M
• Pine River Capital Management owns 925297 shares worth $25.73M
• RoundKeep Capital Advisors owns 816075 shares worth $22.70M
• First Eagle Investment Management owns 782000 shares worth $21.78M
• Havens Advisors owns 760000 shares worth $21.14M
• Parnassus Investments owns 705000 shares worth $13.11M
• D. E. Shaw & Co owns 669848 shares worth $18.66M
• American Century Companies owns 665808 shares worth $18.54M
• Tyrus Capital owns 641000 shares worth $14.92M
• P. SCHOENFELD ASSET MANAGEMENT owns 600000 shares worth $16.69M
• Nomura Holdings owns 581610 shares worth $16.16M
• JPMORGAN CHASE & CO owns 575642 shares worth $16.00M
• Millennium Management owns 574987 shares worth $15.99M
• Wellington Management Company owns 572492 shares worth $13.32M
• STRATTON MANAGEMENT owns 564000 shares worth $13.12M
• Hudson Bay Capital Management owns 547225 shares worth $15.24M
• Chartwell Investment Partners owns 546515 shares worth $10.17M
• Inves owns 534947 shares worth $14.88M
• NUMERIC INVESTORS owns 518100 shares worth $9.64M
• AQR Capital Management owns 514587 shares worth $14.33M
• ING Investment Management Co Address: 10 State House Square owns 514331 shares worth $11.97M
• Origin Asset Management owns 504150 shares worth $11.73M
• Sparta Asset Management owns 478874 shares worth $11.14M
• Sandell Asset Management owns 470000 shares worth $13.07M
• Allen Investment Management owns 465000 shares worth $12.93M
• GOLDMAN SACHS owns 451703 shares worth $12.56M
• Magnetar Financial owns 450000 shares worth $10.47M
• Integre Advisors owns 438452 shares worth $8.16M
• TIG Advisors owns 428317 shares worth $9.97M
• Munder Capital Management owns 427984 shares worth $7.96M
• First Trust Advisors owns 407689 shares worth $9.49M

• Norges Bank Investment Management sold on March 31, 2012
• Renaissance Technologies sold on Sept. 30, 2011
• REINHART MAHONEY CAPITAL MANAGEMENT sold on Sept. 30, 2011
• Plural Investments sold on Sept. 30, 2011
• ClearBridge Advisors sold on Aug. 11, 2011
• Principal Financial sold on June 30, 2011
• Apex Capital Management sold on March 31, 2011
• WESTWOOD MANAGEMENT CORP /TX sold on Dec. 31, 2010
• Adage Capital Partners GP sold on Dec. 31, 2010
• Coatue Management sold on Dec. 31, 2010
• Heather K. Mellem, Esq. sold on Dec. 31, 2010
• OppenheimerFunds sold on Dec. 31, 2010
• Jennison Associates sold on Dec. 31, 2010
• FMR sold on Dec. 31, 2010
• Level Management sold on Sept. 30, 2008
• Roxbury Capital Management sold on Dec. 31, 2004

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