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

• Renaissance Technologies owns 175500 shares worth $66690
• Knight Capital owns 84997 shares worth $39098
• GRT Capital Partners owns 71450 shares worth $65019
• Vanguard owns 61940 shares worth $24776
• Bank of America Corporation owns 50235 shares worth $0
• T. Rowe Price Associates owns 28765 shares worth $10067
• Geode Capital Management owns 20234 shares worth $8093
• Oppenheimer & Co owns 15000 shares worth $7050
• Stafford Asset Management owns 13566 shares worth $43004
• UBS AG owns 13403 shares worth $5093
• CalPERS owns 12575 shares worth $5030
• Buckingham Asset Management owns 10220 shares worth $3985
• Public Employees' Retirement Association of Colorado owns 2575 shares worth $3012
• KBC Group NV owns 350 shares worth $0
• Inves owns 118 shares worth $0
• Wells Fargo & Company owns 16 shares worth $0
• Dan Callahan owns 15 shares worth $15

• Ladenburg Thalmann Financial Services sold on Dec. 31, 2011
• Royal Bank of Canada sold on Sept. 30, 2011
• FIRST NEW YORK SECURITIES sold on June 30, 2011
• Ameriprise Financial sold on June 30, 2011
• D. E. Shaw & Co sold on March 31, 2011
• Barclays sold on March 31, 2011
• AXA sold on March 31, 2011
• Johnson Financial sold on March 31, 2011

• Coca-Cola Company (KO)
• Abbott Laboratories (ABT)
• Johnson & Johnson (JNJ)
• Hospira (HSP)
• Core Laboratories N.V. (CLB)
• Kimberly-Clark Corporation (KMB)
• PetSmart (PETM)
• C.R. Bard (BCR)
• Campbell Soup Company (CPB)
• Becton, Dickinson and (BDX)
• Hess (HES)
• CA (CA)
• Google (GOOG)
• Amedisys (AMED)
• Boston Beer Company (SAM)
• School Specialty (SCHS)
• General Cable Corporation (BGC)
• Celgene Corporation (CELG)
• Centene Corporation (CNC)
• QLogic Corporation (QLGC)
• ARCA biopharma (ABIO)