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 | $55,830 | +24.1% | 4,528 | -62.0% | 0.00% | – |
| Q3 2022 | $45,000 | -51.6% | 11,930 | -23.3% | 0.00% | – |
| Q2 2022 | $93,000 | +38.8% | 15,555 | +46.9% | 0.00% | – |
| Q1 2022 | $67,000 | -55.9% | 10,586 | -66.4% | 0.00% | – |
| Q3 2021 | $152,000 | -30.9% | 31,535 | -8.6% | 0.00% | – |
| Q2 2021 | $220,000 | +209.9% | 34,493 | +52.5% | 0.00% | – |
| Q4 2019 | $71,000 | +1675.0% | 22,621 | +3202.3% | 0.00% | – |
| Q2 2019 | $4,000 | -20.0% | 685 | -12.7% | 0.00% | – |
| Q1 2019 | $5,000 | +66.7% | 785 | 0.0% | 0.00% | – |
| Q4 2018 | $3,000 | -90.6% | 785 | -87.1% | 0.00% | – |
| Q3 2018 | $32,000 | -71.7% | 6,084 | -73.6% | 0.00% | -100.0% |
| Q2 2018 | $113,000 | +3666.7% | 23,045 | +5426.4% | 0.00% | – |
| Q1 2018 | $3,000 | -62.5% | 417 | -22.5% | 0.00% | – |
| Q3 2017 | $8,000 | – | 538 | – | 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% |