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

• Vanguard owns 2.07M shares worth $96.65M
• Timpani Capital Management owns 2.06M shares worth $2.06M
• Renaissance Technologies owns 1.96M shares worth $91.52M
• Palo Alto Investors owns 1.93M shares worth $90.39M
• Icahn Capital owns 1.93M shares worth $61.38M
• Hussman Econometrics Advisors owns 898000 shares worth $42.04M
• Century Capital Management owns 754959 shares worth $35.34M
• Waddell & Reed Financial owns 749756 shares worth $35.10M
• Columbus Circle Investors owns 738235 shares worth $34.55M
• CITADEL ADVISORS owns 648412 shares worth $30.35M
• Neuberger Berman owns 642156 shares worth $28.86M
• Visium Asset Management owns 606914 shares worth $28.40M
• KALMAR INVESTMENTS INC /DE/ owns 605745 shares worth $28.35M
• Sentinel Asset Management owns 589400 shares worth $22.47M
• STATE STREET CORPORATION owns 541641 shares worth $25.35M
• Bank of America Corporation owns 388685 shares worth $14.22M
• Jacobs Levy Equity Management owns 387270 shares worth $18.12M
• Driehaus Capital Management owns 304960 shares worth $11.63M
• Chartwell Investment Partners owns 296110 shares worth $13.86M
• Cupps Capital Management owns 295818 shares worth $15.54M
• Perella Weinberg Partners Capital Management owns 276663 shares worth $12.95M
• Teachers Advisors owns 275425 shares worth $12.89M
• Nuveen Asset Management owns 271612 shares worth $0
• Turner Investments owns 256904 shares worth $12.02M
• Loomis, Sayles and owns 256149 shares worth $11.96M
• CR Intrinsic Investors owns 240000 shares worth $11.23M
• William Blair $ Company owns 210235 shares worth $9.84M
• Wellington Management Company owns 209337 shares worth $9.80M
• Frank Russell Company owns 203113 shares worth $9.34M
• Parnassus Investments owns 200000 shares worth $6.70M
• Ameriprise Financial owns 199810 shares worth $8.98M
• Two Sigma Investments owns 195223 shares worth $7.44M
• Heather K. Mellem, Esq. owns 194818 shares worth $9.12M

• Norges Bank Investment Management sold on March 31, 2012
• CARL C. ICAHN, INDIVIDUAL sold on March 31, 2011
• Pier Capital sold on March 31, 2011
• CalPERS sold on March 31, 2011
• FMR sold on Dec. 31, 2010
• Rainier Investment Management sold on Dec. 31, 2010
• Arbor Capital Management sold on Dec. 31, 2010
• Roxbury Capital Management sold on June 30, 2009
• Manulife Asset Management sold on Sept. 30, 2006

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• Conceptus (CPTS)
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• Cyberonics (CYBX)
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