Citadel Advisors - ZIX CORP ownership

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ZIX CORP's ticker is and the CUSIP is 98974P900. A total of 2 filers reported holding ZIX CORP in Q4 2014. The put-call ratio across all filers is - and the average weighting 0.0%.

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Filings
Quarter-by-quarter ownership
Citadel Advisors ownership history of ZIX CORP
ValueSharesWeighting
Q4 2015$16,000
+33.3%
3,200
+14.3%
0.00%–
Q3 2015$12,000
-80.6%
2,800
-76.5%
0.00%–
Q2 2015$62,000
+181.8%
11,900
+116.4%
0.00%–
Q1 2015$22,000
+214.3%
5,500
+161.9%
0.00%–
Q3 2014$7,0000.0%2,100
+31.2%
0.00%–
Q4 2013$7,000–1,600–0.00%–
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Other shareholders
ZIX CORP shareholders Q4 2014
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 6,900$25,0000.00%
SIMPLEX TRADING, LLC 6$1,0000.00%
View complete list of ZIX CORP shareholders