SOURCEFIRE INC's ticker is and the CUSIP is 83616T908. A total of 3 filers reported holding SOURCEFIRE INC in Q2 2013. The put-call ratio across all filers is - and the average weighting 0.0%.
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 20,700 | $1,150,000 | 0.03% |
| Timber Hill LLC | 54,000 | $3,000,000 | 0.01% |
| Citadel Advisors | 77,600 | $4,311,000 | 0.01% |