GROUP ONE TRADING, L.P. - CYBERONICS INC ownership

CYBERONICS INC's ticker is CYBX and the CUSIP is 23251P102. A total of 187 filers reported holding CYBERONICS INC in Q3 2013. The put-call ratio across all filers is 0.69 and the average weighting 0.1%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of CYBERONICS INC
ValueSharesWeighting
Q2 2013$5,0001000.00%
Other shareholders
CYBERONICS INC shareholders Q3 2013
NameSharesValueWeighting ↓
Palo Alto Investors LP 1,919,518$97,396,00010.21%
OBERWEIS ASSET MANAGEMENT INC/ 103,792$5,266,0001.50%
Century Capital Management, LLC 687,239$34,871,0001.45%
HUSSMAN STRATEGIC ADVISORS, INC. 509,000$25,827,0001.42%
Nichols Asset Management LLC 97,675$4,956,0001.37%
WASHINGTON CAPITAL MANAGEMENT, INC 83,616$4,243,0001.13%
QUANTUM CAPITAL MANAGEMENT 97,139$4,929,0000.97%
Matarin Capital Management, LLC 22,035$1,118,0000.94%
KALMAR INVESTMENTS INC /DE/ 887,440$45,029,0000.80%
Matterhorn Capital Management, LLC 30,610$1,553,0000.78%
View complete list of CYBERONICS INC shareholders