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

XENOPORT INC's ticker is XNPT and the CUSIP is 98411C100. A total of 87 filers reported holding XENOPORT INC in Q4 2013. The put-call ratio across all filers is - and the average weighting 0.1%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of XENOPORT INC
ValueSharesWeighting
Q1 2016$46,000
+360.0%
10,182
+441.0%
0.00%
Q4 2015$10,000
-16.7%
1,882
-44.9%
0.00%
Q3 2015$12,000
-40.0%
3,418
+5.0%
0.00%
Q2 2015$20,000
+42.9%
3,254
+66.5%
0.00%
Q1 2015$14,000
-83.3%
1,954
-79.5%
0.00%
-100.0%
Q4 2014$84,000
+90.9%
9,554
+15.7%
0.00%0.0%
Q3 2014$44,000
-71.4%
8,254
-74.1%
0.00%
-50.0%
Q2 2014$154,000
+926.7%
31,854
+1119.5%
0.00%
Q3 2013$15,000
+36.4%
2,612
+13.7%
0.00%
Q2 2013$11,0002,2980.00%
Other shareholders
XENOPORT INC shareholders Q4 2013
NameSharesValueWeighting ↓
ARMISTICE CAPITAL, LLC 1,600,000$9,808,0003.52%
DAFNA Capital Management LLC 531,032$3,255,0002.75%
SENZAR ASSET MANAGEMENT, LLC 1,722,100$10,556,0001.81%
GREAT POINT PARTNERS LLC 485,000$2,973,0001.16%
Opus Point Partners Management, LLC 130,000$797,0000.63%
Kazazian Asset Management, LLC 65,022$399,0000.39%
Baker Brothers Advisors 6,508,622$39,898,0000.35%
Orbimed Advisors 5,768,400$35,360,0000.26%
CORRADO ADVISORS, LLC 74,500$457,0000.21%
NJ State Employees Deferred Compensation Plan 130,000$797,0000.16%
View complete list of XENOPORT INC shareholders