VANGUARD GROUP INC - ION GEOPHYSICAL CORP ownership

ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044207. A total of 44 filers reported holding ION GEOPHYSICAL CORP in Q3 2017. The put-call ratio across all filers is 3.70 and the average weighting 0.0%.

Quarter-by-quarter ownership
VANGUARD GROUP INC ownership history of ION GEOPHYSICAL CORP
ValueSharesWeighting
Q1 2022$881,000
+10.0%
1,009,992
+11.0%
0.00%
Q4 2021$801,000
-32.0%
910,310
+2.8%
0.00%
Q3 2021$1,178,000
-33.4%
885,730
+4.6%
0.00%
Q2 2021$1,769,000
+76.4%
846,529
+80.5%
0.00%
Q1 2021$1,003,000
-9.1%
469,040
+3.3%
0.00%
Q4 2020$1,104,000
+61.9%
454,240
-0.0%
0.00%
Q3 2020$682,000
-38.7%
454,296
-4.4%
0.00%
Q2 2020$1,112,000
+79.6%
475,270
-2.6%
0.00%
Q1 2020$619,000
-85.4%
488,1610.0%0.00%
Q4 2019$4,237,000
+8.4%
488,161
+13.9%
0.00%
Q3 2019$3,910,000
-2.2%
428,712
-13.6%
0.00%
Q2 2019$3,996,000
-43.3%
496,465
+1.8%
0.00%
Q1 2019$7,044,000
+380.5%
487,760
+72.4%
0.00%
Q4 2018$1,466,000
-82.1%
282,979
-46.2%
0.00%
Q3 2018$8,184,000
-30.9%
526,320
+8.0%
0.00%
Q2 2018$11,847,000
+3.7%
487,542
+15.7%
0.00%
Q1 2018$11,422,000
+47.3%
421,496
+7.4%
0.00%
Q4 2017$7,752,000
+252.2%
392,547
+69.6%
0.00%
Q3 2017$2,201,000
+74.3%
231,422
-20.3%
0.00%
Q2 2017$1,263,000
-27.7%
290,417
-19.3%
0.00%
Q1 2017$1,747,000
-33.1%
360,088
-17.2%
0.00%
Q4 2016$2,610,000
-8.7%
435,060
+4.2%
0.00%
Q3 2016$2,859,000
+13.0%
417,326
+2.8%
0.00%
Q2 2016$2,530,000
-26.0%
405,982
-4.1%
0.00%
Q1 2016$3,421,000423,3530.00%
Other shareholders
ION GEOPHYSICAL CORP shareholders Q3 2017
NameSharesValueWeighting ↓
Alambic Investment Management, L.P. 73,913$674,0000.51%
Gates Capital Management 539,855$4,923,0000.21%
Spark Investment Management LLC 100,000$912,0000.12%
BRIDGEWAY CAPITAL MANAGEMENT, LLC 130,216$1,188,0000.02%
Squarepoint Ops LLC 98,634$900,0000.01%
Quantamental Technologies LLC 2,371$22,0000.01%
Renaissance Technologies 901,519$8,222,0000.01%
ROYCE & ASSOCIATES LP 71,880$656,0000.01%
Neuberger Berman Group LLC 480,187$4,377,0000.01%
ACADIAN ASSET MANAGEMENT LLC 106,808$974,0000.00%
View complete list of ION GEOPHYSICAL CORP shareholders