ION GEOPHYSICAL CORP's ticker is and the CUSIP is 462044958. A total of 2 filers reported holding ION GEOPHYSICAL CORP in Q4 2013. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2015 | $6,000 | +20.0% | 2,700 | +50.0% | 0.00% | – |
| Q4 2014 | $5,000 | +400.0% | 1,800 | +350.0% | 0.00% | – |
| Q3 2014 | $1,000 | -97.1% | 400 | -95.1% | 0.00% | -100.0% |
| Q2 2014 | $35,000 | -58.8% | 8,200 | -59.2% | 0.00% | 0.0% |
| Q1 2014 | $85,000 | +117.9% | 20,100 | +70.3% | 0.00% | 0.0% |
| Q4 2013 | $39,000 | -18.8% | 11,800 | +28.3% | 0.00% | 0.0% |
| Q3 2013 | $48,000 | +100.0% | 9,200 | +130.0% | 0.00% | 0.0% |
| Q2 2013 | $24,000 | – | 4,000 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 400 | $1,000 | 0.00% |
| Citadel Advisors | 9,600 | $27,000 | 0.00% |