ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044207. A total of 67 filers reported holding ION GEOPHYSICAL CORP in Q4 2016. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2017 | $133,000 | -39.0% | 14,000 | -72.0% | 0.01% | -33.3% |
| Q2 2017 | $218,000 | -10.3% | 50,000 | 0.0% | 0.01% | -14.3% |
| Q1 2017 | $243,000 | -19.0% | 50,000 | 0.0% | 0.01% | -17.6% |
| Q4 2016 | $300,000 | -12.5% | 50,000 | 0.0% | 0.02% | -15.0% |
| Q3 2016 | $343,000 | +9.9% | 50,000 | 0.0% | 0.02% | +11.1% |
| Q2 2016 | $312,000 | – | 50,000 | – | 0.02% | – |
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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% |