MERRIMACK PHARMACEUTICALS IN's ticker is MACK and the CUSIP is 590328209. A total of 38 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q4 2021. The put-call ratio across all filers is 8.21 and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,229,338 | -0.4% | 99,703 | -0.6% | 0.00% | – |
| Q2 2023 | $1,233,899 | +34.1% | 100,317 | +34.0% | 0.00% | – |
| Q1 2023 | $920,275 | +7.2% | 74,880 | 0.0% | 0.00% | – |
| Q4 2022 | $858,124 | +460.9% | 74,880 | +82.9% | 0.00% | – |
| Q3 2022 | $153,000 | -37.3% | 40,951 | 0.0% | 0.00% | – |
| Q2 2022 | $244,000 | -5.8% | 40,951 | -0.1% | 0.00% | – |
| Q1 2022 | $259,000 | +61.9% | 40,996 | 0.0% | 0.00% | – |
| Q4 2021 | $160,000 | -19.2% | 40,996 | 0.0% | 0.00% | – |
| Q3 2021 | $198,000 | -24.4% | 40,996 | 0.0% | 0.00% | – |
| Q2 2021 | $262,000 | -1.1% | 40,996 | -2.9% | 0.00% | – |
| Q1 2021 | $265,000 | +119.0% | 42,225 | +140.7% | 0.00% | – |
| Q4 2020 | $121,000 | +72.9% | 17,543 | +0.2% | 0.00% | – |
| Q3 2020 | $70,000 | +20.7% | 17,512 | 0.0% | 0.00% | – |
| Q2 2020 | $58,000 | +52.6% | 17,512 | +0.0% | 0.00% | – |
| Q1 2020 | $38,000 | -32.1% | 17,511 | -0.7% | 0.00% | – |
| Q4 2019 | $56,000 | -29.1% | 17,631 | 0.0% | 0.00% | – |
| Q3 2019 | $79,000 | -26.2% | 17,631 | 0.0% | 0.00% | – |
| Q2 2019 | $107,000 | -13.0% | 17,631 | 0.0% | 0.00% | – |
| Q1 2019 | $123,000 | +75.7% | 17,631 | -3.4% | 0.00% | – |
| Q4 2018 | $70,000 | -66.8% | 18,255 | -57.6% | 0.00% | – |
| Q2 2018 | $211,000 | -67.0% | 43,069 | -45.8% | 0.00% | – |
| Q1 2018 | $639,000 | -22.3% | 79,426 | -1.0% | 0.00% | – |
| Q4 2017 | $822,000 | -18.1% | 80,210 | +16.2% | 0.00% | – |
| Q3 2017 | $1,004,000 | – | 69,050 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Western Standard LLC | 1,894,013 | $23,353,180 | 21.09% |
| Newtyn Management, LLC | 1,873,694 | $23,102,647 | 5.70% |
| Sio Capital Management, LLC | 288,466 | $3,556,786 | 1.10% |
| Madison Avenue Partners, LP | 553,085 | $6,819,538 | 0.97% |
| WITTENBERG INVESTMENT MANAGEMENT, INC. | 209,739 | $2,586 | 0.95% |
| Indaba Capital Management, L.P. | 136,802 | $1,686,769 | 0.50% |
| Sepio Capital, LP | 306,680 | $3,781,364 | 0.33% |
| Yakira Capital Management, Inc. | 54,118 | $667,275 | 0.18% |
| Centiva Capital, LP | 187,803 | $2,315,611 | 0.05% |
| FIFTH LANE CAPITAL, LP | 10,929 | $134,427 | 0.05% |