MERRIMACK PHARMACEUTICALS IN's ticker is and the CUSIP is 590328909. A total of 3 filers reported holding MERRIMACK PHARMACEUTICALS IN in Q1 2023. The put-call ratio across all filers is - and the average weighting 0.0%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $460,692 | – | 40,200 | – | 0.02% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| GROUP ONE TRADING, L.P. | 107,000 | $1,315,030 | 0.01% |
| SIMPLEX TRADING, LLC | 65,500 | $804 | 0.00% |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | $0 | 0.00% |