MERRIMACK PHARMACEUTICALS IN's ticker is and the CUSIP is 590328900. A total of 4 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q3 2014. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q2 2016 | $58,000 | -84.6% | 10,800 | -76.0% | 0.00% | – |
| Q1 2016 | $377,000 | +314.3% | 45,000 | +291.3% | 0.00% | – |
| Q4 2015 | $91,000 | -61.4% | 11,500 | -58.5% | 0.00% | – |
| Q3 2015 | $236,000 | -23.9% | 27,700 | +10.4% | 0.00% | – |
| Q2 2015 | $310,000 | +23.5% | 25,100 | +19.0% | 0.00% | – |
| Q1 2015 | $251,000 | 0.0% | 21,100 | -5.0% | 0.00% | – |
| Q4 2014 | $251,000 | +2.4% | 22,200 | -20.4% | 0.00% | – |
| Q3 2014 | $245,000 | +0.8% | 27,900 | -16.2% | 0.00% | – |
| Q2 2014 | $243,000 | +150.5% | 33,300 | +72.5% | 0.00% | – |
| Q1 2014 | $97,000 | +61.7% | 19,300 | +70.8% | 0.00% | – |
| Q4 2013 | $60,000 | +1100.0% | 11,300 | +769.2% | 0.00% | – |
| Q3 2013 | $5,000 | – | 1,300 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 196,700 | $1,727,000 | 0.03% |
| PEAK6 Group LLC | 92,400 | $811,000 | 0.01% |
| Citadel Advisors | 27,900 | $245,000 | 0.00% |
| BLAIR WILLIAM & CO/IL | 5,000 | $43,000 | 0.00% |