OPTIMER PHARMACEUTICALS INC's ticker is OPTR and the CUSIP is 68401H104. A total of 105 filers reported holding OPTIMER PHARMACEUTICALS INC in Q3 2013. The put-call ratio across all filers is 3.49 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2013 | $3,896,000 | – | 269,265 | – | 0.56% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GABELLI & Co INVESTMENT ADVISERS, INC. | 796,617 | $10,029,000 | 2.18% |
| LONGFELLOW INVESTMENT MANAGEMENT CO LLC | 757,000 | $9,531,000 | 1.51% |
| WATER ISLAND CAPITAL LLC | 2,939,810 | $37,042,000 | 1.43% |
| SECTOR GAMMA AS | 376,393 | $4,739,000 | 1.22% |
| ALPINE ASSOCIATES ADVISORS | 2,213,127 | $27,885,000 | 1.12% |
| BB BIOTECH AG | 1,422,200 | $17,905,000 | 0.97% |
| TOURADJI CAPITAL MANAGEMENT, LP | 25,000 | $315,000 | 0.97% |
| JET CAPITAL INVESTORS L P | 1,027,589 | $12,937,000 | 0.94% |
| DAVIDSON KEMPNER CAPITAL MANAGEMENT LLC | 1,845,022 | $23,229,000 | 0.77% |
| Standard Investments LLC | 256,160 | $3,225,000 | 0.62% |