SIMPLEX TRADING, LLC - ION GEOPHYSICAL CORP ownership

ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044207. A total of 40 filers reported holding ION GEOPHYSICAL CORP in Q3 2020. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of ION GEOPHYSICAL CORP
ValueSharesWeighting
Q2 2022$0
-100.0%
2,000
-58.3%
0.00%
Q3 2021$10,0000.0%4,7920.0%0.00%
Q2 2021$10,000
+400.0%
4,792
+249.0%
0.00%
Q3 2020$2,000
-80.0%
1,373
-83.0%
0.00%
Q1 2020$10,0000.0%8,060
+617.1%
0.00%
Q3 2019$10,000
-47.4%
1,124
-54.7%
0.00%
Q2 2019$19,000
-82.1%
2,481
-66.3%
0.00%
Q1 2019$106,0007,359
+15557.4%
0.00%
Q4 2018$0
-100.0%
47
-96.7%
0.00%
-100.0%
Q4 2017$27,000
+800.0%
1,411
+118.4%
0.00%
Q4 2016$3,0000.0%646
+18.5%
0.00%
Q3 2016$3,0005450.00%
Other shareholders
ION GEOPHYSICAL CORP shareholders Q3 2020
NameSharesValueWeighting ↓
Gates Capital Management 1,212,408$6,280,0000.35%
New Jersey Better Educational Savings Trust 22,000$114,0000.15%
NJ State Employees Deferred Compensation Plan 48,000$249,0000.05%
Spark Investment Management LLC 79,800$413,0000.03%
BRIDGEWAY CAPITAL MANAGEMENT, LLC 177,305$918,0000.01%
Engineers Gate Manager LP 16,334$85,0000.01%
Renaissance Technologies 1,026,523$5,317,0000.01%
A.R.T. Advisors, LLC 17,445$90,0000.01%
Point72 Hong Kong Ltd 1,893$10,0000.01%
PDT Partners, LLC 16,300$84,0000.01%
View complete list of ION GEOPHYSICAL CORP shareholders