MERRIMACK PHARMACEUTICALS IN's ticker is MACK and the CUSIP is 590328209. A total of 65 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q3 2023. The put-call ratio across all filers is 0.58 and the average weighting 0.4%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $26,794 | -51.0% | 2,173 | -51.1% | 0.00% | – |
| Q2 2023 | $54,686 | +2517.8% | 4,446 | +2515.3% | 0.00% | – |
| Q1 2023 | $2,089 | +8.5% | 170 | +1.2% | 0.00% | – |
| Q4 2022 | $1,925 | +92.5% | 168 | -29.7% | 0.00% | – |
| Q3 2022 | $1,000 | – | 239 | +95.9% | 0.00% | – |
| Q2 2022 | $0 | – | 122 | +5.2% | 0.00% | – |
| Q1 2022 | $0 | – | 116 | 0.0% | 0.00% | – |
| Q4 2021 | $0 | – | 116 | 0.0% | 0.00% | – |
| Q3 2021 | $0 | -100.0% | 116 | -14.7% | 0.00% | – |
| Q2 2021 | $1,000 | 0.0% | 136 | -0.7% | 0.00% | – |
| Q1 2021 | $1,000 | 0.0% | 137 | 0.0% | 0.00% | – |
| Q4 2020 | $1,000 | – | 137 | +3.8% | 0.00% | – |
| Q3 2020 | $0 | – | 132 | +3.1% | 0.00% | – |
| Q2 2020 | $0 | – | 128 | 0.0% | 0.00% | – |
| Q1 2020 | $0 | – | 128 | +156.0% | 0.00% | – |
| Q4 2019 | $0 | – | 50 | 0.0% | 0.00% | – |
| Q3 2019 | $0 | – | 50 | 0.0% | 0.00% | – |
| Q2 2019 | $0 | – | 50 | 0.0% | 0.00% | – |
| Q1 2019 | $0 | -100.0% | 50 | -99.7% | 0.00% | – |
| Q1 2018 | $151,000 | -19.3% | 18,837 | +3.0% | 0.00% | – |
| Q4 2017 | $187,000 | +125.3% | 18,287 | +220.5% | 0.00% | – |
| Q3 2017 | $83,000 | – | 5,706 | – | 0.00% | – |
Download | ||||||
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% |