MERRIMACK PHARMACEUTICALS IN's ticker is MACK and the CUSIP is 590328209. A total of 44 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q2 2021. The put-call ratio across all filers is - and the average weighting 0.2%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,085 | -2.0% | 88 | -2.2% | 0.00% | – |
| Q2 2023 | $1,107 | +0.1% | 90 | 0.0% | 0.00% | – |
| Q1 2023 | $1,106 | +7.3% | 90 | 0.0% | 0.00% | – |
| Q4 2022 | $1,031 | +3.1% | 90 | -1.1% | 0.00% | – |
| Q3 2022 | $1,000 | 0.0% | 91 | 0.0% | 0.00% | – |
| Q2 2022 | $1,000 | 0.0% | 91 | 0.0% | 0.00% | – |
| Q1 2022 | $1,000 | 0.0% | 91 | 0.0% | 0.00% | – |
| Q4 2021 | $1,000 | 0.0% | 91 | -58.6% | 0.00% | – |
| Q3 2021 | $1,000 | 0.0% | 220 | 0.0% | 0.00% | – |
| Q2 2021 | $1,000 | 0.0% | 220 | -0.9% | 0.00% | – |
| Q1 2021 | $1,000 | -50.0% | 222 | 0.0% | 0.00% | – |
| Q4 2020 | $2,000 | +100.0% | 222 | -33.3% | 0.00% | – |
| Q3 2020 | $1,000 | 0.0% | 333 | -15.1% | 0.00% | – |
| Q2 2020 | $1,000 | -50.0% | 392 | -61.8% | 0.00% | – |
| Q1 2020 | $2,000 | -66.7% | 1,027 | -43.9% | 0.00% | – |
| Q4 2019 | $6,000 | -25.0% | 1,832 | 0.0% | 0.00% | – |
| Q3 2019 | $8,000 | -50.0% | 1,832 | -31.1% | 0.00% | – |
| Q2 2019 | $16,000 | -72.9% | 2,657 | -68.8% | 0.00% | – |
| Q1 2019 | $59,000 | -68.4% | 8,513 | -82.4% | 0.00% | -100.0% |
| Q4 2018 | $187,000 | -28.1% | 48,323 | -0.8% | 0.00% | 0.0% |
| Q3 2018 | $260,000 | -40.9% | 48,707 | -45.6% | 0.00% | 0.0% |
| Q2 2018 | $440,000 | -49.9% | 89,540 | -18.0% | 0.00% | -66.7% |
| Q1 2018 | $879,000 | -27.2% | 109,179 | -7.2% | 0.00% | 0.0% |
| Q4 2017 | $1,207,000 | – | 117,710 | – | 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% |