MERRIMACK PHARMACEUTICALS IN's ticker is and the CUSIP is 590328950. A total of 3 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q3 2015. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2017 | $37,000 | -46.4% | 977 | -35.6% | 0.00% | -33.3% |
| Q1 2017 | $69,000 | +53.3% | 1,518 | +434.5% | 0.00% | 0.0% |
| Q4 2016 | $45,000 | +2150.0% | 284 | +735.3% | 0.00% | – |
| Q3 2016 | $2,000 | -93.5% | 34 | -61.8% | 0.00% | -100.0% |
| Q2 2016 | $31,000 | +93.8% | 89 | +29.0% | 0.00% | +100.0% |
| Q1 2016 | $16,000 | +433.3% | 69 | -9.2% | 0.00% | – |
| Q4 2015 | $3,000 | -90.9% | 76 | -74.2% | 0.00% | -100.0% |
| Q3 2015 | $33,000 | – | 295 | +4114.3% | 0.00% | – |
| Q2 2015 | $0 | – | 7 | -41.7% | 0.00% | – |
| Q1 2015 | $0 | -100.0% | 12 | -14.3% | 0.00% | – |
| Q4 2014 | $1,000 | – | 14 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 134,400 | $1,144,000 | 0.02% |
| SIMPLEX TRADING, LLC | 295 | $33,000 | 0.00% |
| Citadel Advisors | 27,100 | $231,000 | 0.00% |