ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044207. A total of 71 filers reported holding ION GEOPHYSICAL CORP in Q3 2018. The put-call ratio across all filers is 0.12 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2021 | $2,000 | 0.0% | 636 | -9.8% | 0.00% | – |
| Q1 2021 | $2,000 | 0.0% | 705 | -12.1% | 0.00% | – |
| Q4 2020 | $2,000 | +100.0% | 802 | -26.6% | 0.00% | – |
| Q3 2020 | $1,000 | -80.0% | 1,092 | -46.3% | 0.00% | – |
| Q2 2020 | $5,000 | +400.0% | 2,033 | +50.3% | 0.00% | – |
| Q1 2020 | $1,000 | -75.0% | 1,353 | +189.1% | 0.00% | – |
| Q4 2019 | $4,000 | +33.3% | 468 | +15.0% | 0.00% | – |
| Q3 2019 | $3,000 | 0.0% | 407 | +5.4% | 0.00% | – |
| Q2 2019 | $3,000 | -40.0% | 386 | +5.2% | 0.00% | – |
| Q1 2019 | $5,000 | +150.0% | 367 | +10.2% | 0.00% | – |
| Q4 2018 | $2,000 | -71.4% | 333 | -25.5% | 0.00% | – |
| Q3 2018 | $7,000 | -12.5% | 447 | +34.2% | 0.00% | – |
| Q2 2018 | $8,000 | -11.1% | 333 | 0.0% | 0.00% | – |
| Q1 2018 | $9,000 | +28.6% | 333 | 0.0% | 0.00% | – |
| Q4 2017 | $7,000 | +133.3% | 333 | 0.0% | 0.00% | – |
| Q3 2017 | $3,000 | – | 333 | +2461.5% | 0.00% | – |
| Q2 2017 | $0 | – | 13 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Gates Capital Management | 582,946 | $2,827,000 | 0.10% |
| ALGERT GLOBAL LLC | 42,959 | $208,000 | 0.06% |
| Spark Investment Management LLC | 64,678 | $313,000 | 0.02% |
| IMPAX ASSET MANAGEMENT LLC | 50,000 | $243,000 | 0.01% |
| A.R.T. Advisors, LLC | 41,680 | $202,000 | 0.01% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 155,724 | $755,000 | 0.01% |
| Alambic Investment Management, L.P. | 13,900 | $67,000 | 0.01% |
| OXFORD ASSET MANAGEMENT LLP | 49,379 | $239,000 | 0.01% |
| Connor, Clark & Lunn Investment Management Ltd. | 83,021 | $403,000 | 0.00% |
| ROYCE & ASSOCIATES LP | 71,880 | $349,000 | 0.00% |