ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044108. A total of 135 filers reported holding ION GEOPHYSICAL CORP in Q4 2013. The put-call ratio across all filers is 2.89 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2015 | $6,000 | +20.0% | 11,881 | 0.0% | 0.00% | – |
| Q3 2015 | $5,000 | -61.5% | 11,881 | 0.0% | 0.00% | -100.0% |
| Q2 2015 | $13,000 | -50.0% | 11,881 | 0.0% | 0.00% | -50.0% |
| Q1 2015 | $26,000 | -21.2% | 11,881 | 0.0% | 0.00% | 0.0% |
| Q4 2014 | $33,000 | 0.0% | 11,881 | 0.0% | 0.00% | 0.0% |
| Q3 2014 | $33,000 | -34.0% | 11,881 | 0.0% | 0.00% | -50.0% |
| Q2 2014 | $50,000 | 0.0% | 11,881 | 0.0% | 0.00% | 0.0% |
| Q1 2014 | $50,000 | +28.2% | 11,881 | 0.0% | 0.00% | +33.3% |
| Q4 2013 | $39,000 | -37.1% | 11,881 | 0.0% | 0.00% | -50.0% |
| Q3 2013 | $62,000 | – | 11,881 | – | 0.01% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|