MERRIMACK PHARMACEUTICALS IN's ticker is MACK and the CUSIP is 590328209. A total of 63 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q2 2023. The put-call ratio across all filers is 0.21 and the average weighting 0.4%.
Quarter-by-quarter ownership
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| 22NW, LP | 749,302 | $2,892,000 | 1.80% |
| Clearline Capital LP | 316,425 | $1,221,000 | 0.84% |
| Newtyn Management, LLC | 888,620 | $3,430,000 | 0.67% |
| Western Standard LLC | 150,363 | $580,000 | 0.54% |
| WITTENBERG INVESTMENT MANAGEMENT, INC. | 222,467 | $859,000 | 0.40% |
| BVF INC/IL | 721,935 | $2,787,000 | 0.36% |
| Sepio Capital, LP | 411,676 | $1,589,000 | 0.12% |
| Yakira Capital Management, Inc. | 66,934 | $258,000 | 0.09% |
| J. Goldman & Co LP | 152,095 | $587,000 | 0.04% |
| Spark Investment Management LLC | 48,909 | $188,000 | 0.01% |