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 | ||||
|---|---|---|---|---|---|---|
| Q2 2023 | $132,213 | +26663.8% | 10,749 | -73.3% | 0.00% | – |
| Q1 2023 | $494 | +153.3% | 40,204 | +136.7% | 0.00% | – |
| Q4 2022 | $195 | -99.7% | 16,985 | +51.8% | 0.00% | – |
| Q2 2021 | $71,000 | -7.8% | 11,187 | -9.0% | 0.00% | – |
| Q1 2021 | $77,000 | +5.5% | 12,292 | +17.0% | 0.00% | – |
| Q1 2019 | $73,000 | -33.0% | 10,503 | -62.7% | 0.00% | – |
| Q4 2018 | $109,000 | -84.7% | 28,184 | -78.9% | 0.00% | -100.0% |
| Q3 2018 | $712,000 | -15.1% | 133,650 | -21.8% | 0.00% | 0.0% |
| Q2 2018 | $839,000 | -20.8% | 170,906 | +30.0% | 0.00% | 0.0% |
| Q1 2018 | $1,059,000 | -49.5% | 131,504 | -35.7% | 0.00% | -66.7% |
| Q4 2017 | $2,097,000 | +125.2% | 204,566 | +219.6% | 0.00% | +200.0% |
| Q3 2017 | $931,000 | – | 63,999 | – | 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% |