GROUP ONE TRADING, L.P. - DOCUMENT SEC SYS INC ownership

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DOCUMENT SEC SYS INC's ticker is and the CUSIP is 25614T950. A total of 1 filers reported holding DOCUMENT SEC SYS INC in Q4 2018. The put-call ratio across all filers is - and the average weighting 0.0%.

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Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of DOCUMENT SEC SYS INC
ValueSharesWeighting
Q3 2018$0
-100.0%
100
-99.0%
0.00%–
Q1 2018$13,000
-61.8%
9,900
-47.1%
0.00%–
Q4 2017$34,000–18,700–0.00%–
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Other shareholders
DOCUMENT SEC SYS INC shareholders Q4 2018
NameSharesValueWeighting ↓
SIMPLEX TRADING, LLC 86$27,0000.00%
GROUP ONE TRADING, L.P. 18,700$34,0000.00%
View complete list of DOCUMENT SEC SYS INC shareholders