SIMPLEX TRADING, LLC - XENOPORT INC ownership

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XENOPORT INC's ticker is and the CUSIP is 98411C900. A total of 3 filers reported holding XENOPORT INC in Q3 2015. The put-call ratio across all filers is - and the average weighting 0.0%.

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Filings
Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of XENOPORT INC
ValueSharesWeighting
Q2 2016$6,000–148
+1380.0%
0.00%–
Q1 2016$0–10
-33.3%
0.00%–
Q4 2015$0
-100.0%
15
-89.0%
0.00%–
Q3 2015$1,000–136
+491.3%
0.00%–
Q1 2015$0
-100.0%
23
-23.3%
0.00%
-100.0%
Q4 2014$14,000–30–0.00%–
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Other shareholders
XENOPORT INC shareholders Q3 2015
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 17,400$100,0000.00%
Citadel Advisors 3,200$18,0000.00%
View complete list of XENOPORT INC shareholders