CARBO CERAMICS INC's ticker is and the CUSIP is 140781955. A total of 3 filers reported holding CARBO CERAMICS INC in Q3 2013. The put-call ratio across all filers is - and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2013 | $674,000 | – | 10,000 | – | 0.01% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 89,400 | $5,295,000 | 0.08% |
| PEAK6 Group LLC | 59,500 | $3,524,000 | 0.03% |
| Timber Hill LLC | 15,000 | $888,000 | 0.00% |
| Citadel Advisors | 62,000 | $3,672,000 | 0.00% |