GROUP ONE TRADING, L.P. - MALLINCKRODT PUB LTD CO ownership

MALLINCKRODT PUB LTD CO's ticker is and the CUSIP is G5785G957. A total of 4 filers reported holding MALLINCKRODT PUB LTD CO in Q2 2020. 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 MALLINCKRODT PUB LTD CO
ValueSharesWeighting
Q3 2020$1,160,000
-65.8%
1,191,500
-5.7%
0.00%
-75.0%
Q2 2020$3,388,000
-40.9%
1,264,000
-56.4%
0.02%
-65.2%
Q1 2020$5,734,000
+92.7%
2,896,000
+239.6%
0.05%
+130.0%
Q4 2019$2,976,000
+79.8%
852,800
+24.2%
0.02%
+53.8%
Q3 2019$1,655,000
-78.3%
686,700
-17.5%
0.01%
-81.2%
Q2 2019$7,642,000
-6.3%
832,500
+121.8%
0.07%
-24.2%
Q1 2019$8,159,000
-38.7%
375,300
-55.5%
0.09%
-20.9%
Q4 2018$13,316,000
-45.5%
842,800
+1.1%
0.12%
-40.4%
Q3 2018$24,424,000
+53.9%
833,300
-2.0%
0.19%
+41.9%
Q2 2018$15,865,000
+67.9%
850,200
+30.3%
0.14%
+43.2%
Q1 2018$9,448,000
-10.8%
652,500
+39.0%
0.10%
+28.4%
Q4 2017$10,592,000
-38.2%
469,500
+2.3%
0.07%
-52.6%
Q3 2017$17,145,000
+48.7%
458,800
+78.3%
0.16%
+30.0%
Q2 2017$11,530,000
+30.7%
257,300
+30.0%
0.12%
+16.5%
Q1 2017$8,820,000
+110.0%
197,900
+134.8%
0.10%
+151.2%
Q4 2016$4,200,000
+69.1%
84,300
+136.8%
0.04%
+51.9%
Q3 2016$2,484,000
-7.5%
35,600
-19.5%
0.03%
-15.6%
Q2 2016$2,686,000
-16.0%
44,200
-15.3%
0.03%
-28.9%
Q1 2016$3,199,000
-86.2%
52,200
-83.2%
0.04%
-83.6%
Q4 2015$23,188,000
-5.9%
310,700
-19.4%
0.27%
-19.6%
Q3 2015$24,636,000
-37.7%
385,300
+14.7%
0.34%
-38.3%
Q2 2015$39,542,000
+2.6%
335,900
+10.4%
0.55%
-8.6%
Q1 2015$38,527,000
-53.7%
304,200
-63.8%
0.60%
-51.8%
Q4 2014$83,225,000
-24.9%
840,400
-31.6%
1.26%
-26.4%
Q3 2014$110,785,000
+725.1%
1,228,900
+632.4%
1.71%
+724.2%
Q2 2014$13,427,000
+11089.2%
167,800
+8731.6%
0.21%
+10250.0%
Q1 2014$120,000
-4.0%
1,900
-20.8%
0.00%0.0%
Q4 2013$125,000
+212.5%
2,400
+166.7%
0.00%
+100.0%
Q3 2013$40,0009000.00%
Other shareholders
MALLINCKRODT PUB LTD CO shareholders Q2 2020
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 1,264,000$3,388,0000.02%
CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0$00.00%
JPMORGAN CHASE & CO 1,000$3,0000.00%
SIMPLEX TRADING, LLC 414$00.00%
View complete list of MALLINCKRODT PUB LTD CO shareholders