CHARLES SCHWAB INVESTMENT MANAGEMENT INC - ION GEOPHYSICAL CORP ownership

ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044207. A total of 71 filers reported holding ION GEOPHYSICAL CORP in Q2 2016. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
CHARLES SCHWAB INVESTMENT MANAGEMENT INC ownership history of ION GEOPHYSICAL CORP
ValueSharesWeighting
Q1 2019$373,000
+262.1%
25,776
+30.2%
0.00%
Q4 2018$103,000
-88.3%
19,800
-64.9%
0.00%
-100.0%
Q3 2018$879,000
+60.1%
56,475
+150.0%
0.00%
Q2 2018$549,000
+361.3%
22,590
+53.8%
0.00%
Q1 2016$119,00014,6860.00%
Other shareholders
ION GEOPHYSICAL CORP shareholders Q2 2016
NameSharesValueWeighting ↓
GSA CAPITAL PARTNERS LLP 54,182$132,0000.02%
BRIDGEWAY CAPITAL MANAGEMENT, LLC 77,400$188,0000.00%
Renaissance Technologies 1,004,267$2,440,0000.00%
SeaCrest Wealth Management, LLC 10,000$24,0000.00%
FARMERS & MERCHANTS INVESTMENTS INC 20,763$50,0000.00%
Neuberger Berman Group LLC 284,018$690,0000.00%
ACADIAN ASSET MANAGEMENT LLC 79,526$193,0000.00%
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 17,876$43,0000.00%
DEUTSCHE BANK AG\ 300,000$729,0000.00%
MORGAN STANLEY 747$2,0000.00%
View complete list of ION GEOPHYSICAL CORP shareholders