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

• Empire Capital Management owns 38.59M shares worth $99.96B
• Artis Capital Management, L P owns 14.26M shares worth $24.25M
• Vanguard owns 13.24M shares worth $34.29M
• T. Rowe Price Associates owns 7.02M shares worth $18.18M
• STATE STREET CORPORATION owns 4.11M shares worth $10.65M
• S.A.C. Capital Advisors owns 4.02M shares worth $10.41M
• First Trust Advisors owns 3.98M shares worth $10.30M
• Contour Asset Management owns 3.42M shares worth $8.87M
• Perimeter Capital Partners owns 2.80M shares worth $8.12M
• Inves owns 2.47M shares worth $5.29M
• Shannon River Fund Management owns 2.32M shares worth $6.72M
• Manatuck Hill Partners owns 2.18M shares worth $6.33M
• Timberline Asset Management owns 2.14M shares worth $5.54M
• Norges Bank Investment Management owns 2.05M shares worth $3.49M
• Thomas Weisel Asset Management owns 1.93M shares worth $3.27M
• Renaissance Technologies owns 1.64M shares worth $3.51M
• Millennium Management owns 1.28M shares worth $2.42M
• GOLDMAN SACHS owns 1.25M shares worth $2.68M
• Frank Russell Company owns 1.23M shares worth $2.03M
• Ironwood Investment Management owns 1.20M shares worth $3.48M
• Royce & Associates owns 1.12M shares worth $2.91M
• CR Intrinsic Investors owns 1.10M shares worth $2.64M
• Geode Capital Management owns 1.09M shares worth $2.83M

• Polar Capital sold on June 30, 2011
• Central Securities Corporation sold on June 30, 2011
• WEISS MULTI-STRATEGY ADVISERS sold on June 30, 2011
• OZ Management sold on March 31, 2011
• Roxbury Capital Management sold on March 31, 2011
• Pier Capital sold on March 31, 2011
• Oxford Asset Management sold on March 31, 2011
• Jacobs Levy Equity Management sold on March 31, 2011
• Archon Capital Management sold on Dec. 31, 2010
• Technical Financial Services sold on Dec. 31, 2010
• Barclays sold on Dec. 31, 2010
• Balyasny Asset Management sold on Dec. 31, 2010
• Tudor Investment Corporation sold on Dec. 31, 2006
• Navellier & Associates sold on Dec. 31, 2003

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