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

• Jefferies owns 81.26M shares worth $302.30M
• Blackstone owns 56.88M shares worth $211.58M
• Pine River Capital Management owns 10.46M shares worth $38.92M
• Vanguard owns 7.86M shares worth $29.24M
• Royce & Associates owns 4.80M shares worth $12.87M
• Wentworth, Hauser & Violich owns 3.42M shares worth $12.74M
• STATE STREET CORPORATION owns 3.11M shares worth $11.57M
• Wellington Management Company owns 3.03M shares worth $36.21M
• S.A.C. Capital Advisors owns 3.00M shares worth $11.17M
• Paradigm Capital Management owns 2.59M shares worth $30.92M
• Oxford Asset Management owns 2.26M shares worth $8.40M
• David W. Seeley owns 2.01M shares worth $7.49M
• GOLDMAN SACHS owns 1.81M shares worth $21.57M
• Ascend Capital owns 1.59M shares worth $5.90M
• JPMORGAN CHASE & CO owns 1.50M shares worth $17.93M
• Opus Capital owns 1.49M shares worth $17.85M
• Robeco Investment Management owns 1.48M shares worth $17.71M
• Centaurus Capital owns 1.41M shares worth $4.95M
• AQR Capital Management owns 1.38M shares worth $16.43M
• Ameriprise Financial owns 1.31M shares worth $15.60M
• Principal Financial owns 1.28M shares worth $15.26M
• Barclays owns 1.14M shares worth $4.23M
• Geode Capital Management owns 1.07M shares worth $3.96M
• Credit Suisse AG owns 1.01M shares worth $3.77M
• Pentwater Capital Management owns 1000000 shares worth $3.51M
• Philadelphia Financial Management of San Francis owns 992868 shares worth $11.74M
• D. E. Shaw & Co owns 962583 shares worth $3.38M
• Frank Russell Company owns 948998 shares worth $11.15M
• BUCKHEAD CAPITAL MANAGEMENT owns 901931 shares worth $10.66M
• UBS AG owns 895176 shares worth $3.14M
• Signia Capital Management owns 861845 shares worth $10.29M
• CITADEL ADVISORS owns 834685 shares worth $2.93M
• PEAK6 Investments owns 828210 shares worth $2.90M

• FRIESS ASSOCIATES sold on Sept. 30, 2011
• Nuveen Asset Management sold on Sept. 30, 2011
• Royal Bank of Canada sold on Sept. 30, 2011
• Schroder Investment Management sold on March 31, 2011
• --- --------------------- ---------------------- sold on March 31, 2011
• TCW sold on March 31, 2011
• Wells Fargo & Company sold on March 31, 2011
• FMR sold on Dec. 31, 2010
• Tudor Investment Corporation sold on June 30, 2008

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