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

• Jet Capital Investors owns 2.42M shares worth $6.35M
• Sophrosyne Capital owns 2.05M shares worth $7.35M
• Vanguard owns 1.51M shares worth $5.40M
• Cowen owns 691112 shares worth $1.81M
• STATE STREET CORPORATION owns 620582 shares worth $2.22M
• Scoggin owns 550000 shares worth $1.97M
• Nollenberger Capital Partners owns 531475 shares worth $4.50M
• Gardner Lewis Asset Management owns 468112 shares worth $1.18M
• Balyasny Asset Management owns 315600 shares worth $795312
• Beech Hill Advisors owns 285830 shares worth $1.02M
• Millennium Management owns 252286 shares worth $635760
• D. E. Shaw & Co owns 234644 shares worth $840025
• J. Goldman & Co owns 226136 shares worth $809566
• Geode Capital Management owns 197416 shares worth $706749
• Capital Tactics Advisors owns 192844 shares worth $485966
• Walleye Trading owns 176441 shares worth $462275
• Bridgeway Capital Management owns 173600 shares worth $454832
• Wellington Management Company owns 166591 shares worth $436468
• TIAA-CREF Investment Management owns 152548 shares worth $546121
• CalPERS owns 142300 shares worth $509434
• Deerfield Management Company owns 96614 shares worth $345878
• Guggenheim Capital, LLC Managers owns 94965 shares worth $310535
• Oxford Asset Management owns 71436 shares worth $240024
• ALLIANCEBERNSTEIN owns 68523 shares worth $245312
• Barclays owns 65200 shares worth $165608
• Tudor Investment Corporation owns 64900 shares worth $218064
• Teachers Advisors owns 64363 shares worth $205961
• Charles Schwab Investment Management owns 62296 shares worth $163838
• California State Teachers Retirement System owns 61037 shares worth $219122

• Nomura Holdings sold on Dec. 31, 2011
• Gruber & McBaine Capital Management sold on Sept. 30, 2011
• Royal Bank of Canada sold on Sept. 30, 2011
• Capstone Investment Advisors sold on Sept. 30, 2011
• GOLDMAN SACHS sold on Sept. 30, 2011
• Credit Suisse AG sold on Sept. 30, 2011
• Perceptive Advisors sold on Sept. 30, 2011
• Weiss Asset Management LP[1 sold on June 30, 2011
• Ramius sold on March 31, 2011
• Oracle Investment Management sold on March 31, 2011
• FMR sold on Dec. 31, 2010
• NUMERIC INVESTORS sold on Dec. 31, 2010
• ClariVest Asset Management sold on Dec. 31, 2010
• Steinberg Asset Management sold on Dec. 31, 2010

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