MERRIMACK PHARMACEUTICALS IN's ticker is MACK and the CUSIP is 590328209. A total of 43 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 5.04 and the average weighting 0.3%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,051,724 | -25.6% | 85,298 | -25.8% | 0.00% | – |
| Q2 2023 | $1,414,464 | -67.4% | 114,997 | -67.4% | 0.00% | -100.0% |
| Q1 2023 | $4,341,946 | +7.1% | 353,291 | -0.2% | 0.00% | 0.0% |
| Q4 2022 | $4,055,694 | +3068.5% | 353,900 | +937.3% | 0.00% | – |
| Q3 2022 | $128,000 | -23.8% | 34,118 | +21.4% | 0.00% | – |
| Q2 2022 | $168,000 | +136.6% | 28,111 | +148.8% | 0.00% | – |
| Q1 2022 | $71,000 | +39.2% | 11,300 | +6.4% | 0.00% | – |
| Q3 2021 | $51,000 | -73.8% | 10,622 | -65.3% | 0.00% | – |
| Q2 2021 | $195,000 | -73.2% | 30,652 | -73.5% | 0.00% | – |
| Q1 2021 | $727,000 | +48.7% | 115,844 | +63.3% | 0.00% | – |
| Q4 2020 | $489,000 | +579.2% | 70,943 | +292.0% | 0.00% | – |
| Q3 2020 | $72,000 | +84.6% | 18,100 | +53.4% | 0.00% | – |
| Q2 2020 | $39,000 | +39.3% | 11,800 | -9.9% | 0.00% | – |
| Q1 2020 | $28,000 | -9.7% | 13,100 | +30.5% | 0.00% | – |
| Q4 2019 | $31,000 | -50.0% | 10,042 | -26.3% | 0.00% | – |
| Q3 2019 | $62,000 | -24.4% | 13,629 | +1.3% | 0.00% | – |
| Q2 2019 | $82,000 | +26.2% | 13,459 | -20.7% | 0.00% | – |
| Q4 2018 | $65,000 | -66.5% | 16,972 | -53.2% | 0.00% | – |
| Q3 2018 | $194,000 | -47.0% | 36,298 | -51.2% | 0.00% | – |
| Q2 2018 | $366,000 | +205.0% | 74,445 | +533.8% | 0.00% | – |
| Q4 2017 | $120,000 | -34.4% | 11,746 | -6.4% | 0.00% | – |
| Q3 2017 | $183,000 | – | 12,553 | – | 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% |