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

QUALYS INC's ticker is and the CUSIP is 74758T903. A total of 3 filers reported holding QUALYS INC in Q1 2023. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of QUALYS INC
ValueSharesWeighting
Q3 2023$1,052,595
-86.4%
6,900
-88.5%
0.00%
-84.0%
Q2 2023$7,750,200
+1032.1%
60,000
+883.6%
0.02%
+1150.0%
Q4 2022$684,603
-94.2%
6,100
-92.8%
0.00%
-91.3%
Q3 2022$11,848,000
+23.9%
85,000
+12.1%
0.02%
+53.3%
Q2 2022$9,561,000
-25.9%
75,800
-16.3%
0.02%
+15.4%
Q1 2022$12,902,000
+34.5%
90,600
+29.6%
0.01%
+62.5%
Q4 2021$9,592,000
+1205.0%
69,900
+959.1%
0.01%
+700.0%
Q3 2021$735,000
-77.3%
6,600
-79.5%
0.00%
-75.0%
Q2 2021$3,242,000
+291.5%
32,200
+307.6%
0.00%
+300.0%
Q1 2021$828,000
+424.1%
7,900
+507.7%
0.00%
Q4 2020$158,000
+1480.0%
1,300
+1200.0%
0.00%
Q3 2020$10,000
-52.4%
100
-50.0%
0.00%
Q2 2020$21,000
-94.7%
200
-95.7%
0.00%
-100.0%
Q2 2018$396,000
+395.0%
4,700
+327.3%
0.00%
+200.0%
Q1 2018$80,000
+35.6%
1,100
+10.0%
0.00%
Q4 2017$59,000
-72.2%
1,000
-85.9%
0.00%
-100.0%
Q2 2016$212,000
+417.1%
7,100
+343.8%
0.00%
+200.0%
Q1 2016$41,000
-72.5%
1,600
-64.4%
0.00%
-50.0%
Q4 2015$149,000
+2383.3%
4,500
+2150.0%
0.00%
Q3 2015$6,000
-99.2%
200
-98.9%
0.00%
-100.0%
Q2 2015$706,000
-19.6%
17,500
-7.4%
0.01%
-28.6%
Q1 2015$878,000
+262.8%
18,900
+195.3%
0.01%
+250.0%
Q4 2014$242,000
+98.4%
6,400
+39.1%
0.00%
+100.0%
Q3 2014$122,000
+2340.0%
4,600
+2200.0%
0.00%
Q2 2014$5,000
-83.9%
200
-83.3%
0.00%
-100.0%
Q1 2014$31,000
+10.7%
1,2000.0%0.00%
Q4 2013$28,000
+366.7%
1,200
+300.0%
0.00%
Q3 2013$6,000
-71.4%
300
-76.9%
0.00%
-100.0%
Q2 2013$21,0001,3000.00%
Other shareholders
QUALYS INC shareholders Q1 2023
NameSharesValueWeighting ↓
SIMPLEX TRADING, LLC 53,200$6,9170.01%
JANE STREET GROUP, LLC 11,300$1,469,2260.00%
CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0$00.00%
View complete list of QUALYS INC shareholders