QUESTCOR PHARMACEUTICALS INC's ticker is and the CUSIP is 74835Y901. A total of 2 filers reported holding QUESTCOR PHARMACEUTICALS INC in Q4 2013. The put-call ratio across all filers is - and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2013 | $5,259,000 | – | 150,000 | – | 0.07% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 260,900 | $14,206,000 | 0.21% |
| Citadel Advisors | 86,800 | $4,726,000 | 0.01% |