MERRIMACK PHARMACEUTICALS IN's ticker is MACK and the CUSIP is 590328209. A total of 74 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q4 2017. The put-call ratio across all filers is 1.37 and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q1 2019 | $70,000 | -62.8% | 10,100 | -79.3% | 0.00% | -76.9% |
| Q4 2018 | $188,000 | -49.9% | 48,909 | -30.6% | 0.01% | -38.1% |
| Q3 2018 | $375,000 | +25.8% | 70,489 | +15.8% | 0.02% | +23.5% |
| Q2 2018 | $298,000 | -36.9% | 60,848 | +3.7% | 0.02% | -43.3% |
| Q1 2018 | $472,000 | +333.0% | 58,700 | +448.6% | 0.03% | +400.0% |
| Q4 2017 | $109,000 | – | 10,700 | – | 0.01% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Newtyn Management, LLC | 362,335 | $3,714,000 | 0.57% |
| Rubric Capital Management LP | 410,244 | $4,205,000 | 0.52% |
| WITTENBERG INVESTMENT MANAGEMENT, INC. | 83,811 | $859,000 | 0.37% |
| Yakira Capital Management, Inc. | 83,969 | $861,000 | 0.28% |
| KEMPNER CAPITAL MANAGEMENT INC. | 14,898 | $153,000 | 0.10% |
| STONEBRIDGE CAPITAL MANAGEMENT INC | 18,550 | $200,000 | 0.07% |
| BOGLE INVESTMENT MANAGEMENT L P /DE/ | 66,498 | $681,000 | 0.05% |
| Cannell & Co. | 75,467 | $774,000 | 0.03% |
| Trexquant Investment LP | 21,347 | $219,000 | 0.02% |
| PDT Partners, LLC | 58,004 | $595,000 | 0.02% |