QUESTCOR PHARMACEUTICALS INC's ticker is and the CUSIP is 74835Y951. A total of 3 filers reported holding QUESTCOR PHARMACEUTICALS INC in Q4 2013. The put-call ratio across all filers is - and the average weighting 0.2%.
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 502,100 | $27,339,000 | 0.41% |
| BALYASNY ASSET MANAGEMENT L.P. | 428,400 | $23,326,000 | 0.30% |
| Citadel Advisors | 92,200 | $5,020,000 | 0.01% |