SpiderRock Trading LLC - CYBERONICS INC ownership

CYBERONICS INC's ticker is and the CUSIP is 23251P10. A total of 1 filers reported holding CYBERONICS INC in Q1 2015. The put-call ratio across all filers is - and the average weighting 0.1%.

Quarter-by-quarter ownership
SpiderRock Trading LLC ownership history of CYBERONICS INC
ValueSharesWeighting
Q4 2014$83,000
+315.0%
1,500
+400.0%
0.23%
+111.0%
Q4 2013$20,000
+300.0%
300
+200.0%
0.11%
+263.3%
Q3 2013$5,0001000.03%
Other shareholders
CYBERONICS INC shareholders Q1 2015
NameSharesValueWeighting ↓
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 141,507$9,187,0000.06%
View complete list of CYBERONICS INC shareholders