ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044108. A total of 151 filers reported holding ION GEOPHYSICAL CORP in Q2 2013. The put-call ratio across all filers is 2.71 and the average weighting 0.1%.
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| VILLERE ST DENIS J & CO LLC | 13,745,184 | $71,475,000 | 3.35% |
| Parametrica Management Ltd | 23,896 | $124,000 | 1.55% |
| PACIFIC GLOBAL INVESTMENT MANAGEMENT CO | 272,275 | $1,416,000 | 0.28% |
| Cortina Asset Management, LLC | 1,224,368 | $6,367,000 | 0.25% |
| WISCONSIN CAPITAL MANAGEMENT LLC | 95,000 | $494,000 | 0.21% |
| WealthTrust Axiom LLC | 97,410 | $506,000 | 0.21% |
| Quotient Investors, LLC | 143,800 | $748,000 | 0.20% |
| SNOW CAPITAL MANAGEMENT LP | 664,175 | $3,454,000 | 0.15% |
| Highlander Capital Management, LLC | 26,500 | $137,800,000 | 0.14% |
| NCM Capital Advisers, Inc. | 22,900 | $119,000 | 0.13% |