ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044207. A total of 44 filers reported holding ION GEOPHYSICAL CORP in Q1 2021. The put-call ratio across all filers is 0.79 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2022 | $0 | – | 66 | +340.0% | 0.00% | – |
| Q2 2021 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q1 2021 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q4 2020 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q3 2020 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q2 2020 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q3 2019 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q2 2019 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q1 2019 | $0 | – | 15 | 0.0% | 0.00% | – |
| Q4 2018 | $0 | – | 15 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Gates Capital Management | 1,024,835 | $14,799,000 | 0.66% |
| Alambic Investment Management, L.P. | 21,128 | $305,000 | 0.12% |
| Spark Investment Management LLC | 110,687 | $1,598,000 | 0.07% |
| NJ State Employees Deferred Compensation Plan | 20,000 | $289,000 | 0.05% |
| ELLINGTON MANAGEMENT GROUP LLC | 11,500 | $166,000 | 0.03% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 130,216 | $1,880,000 | 0.02% |
| Jefferies Group LLC | 176,800 | $2,553,000 | 0.02% |
| Engineers Gate Manager LP | 24,551 | $355,000 | 0.02% |
| PDT Partners, LLC | 14,743 | $213,000 | 0.01% |
| ROYCE & ASSOCIATES LP | 71,880 | $1,038,000 | 0.01% |