Merrimack Pharmaceuticals Inc
MACKDelisted- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001274792
Merrimack Pharmaceuticals Inc was delisted in 2024; its insiders filed their last Form 4 on Dec 28, 2023; 70 institutions reported holding it in 13F filings for Q1 2024, worth $138.5M in total; no superinvestor held it.
13F holders, Q2 2022
Institutional positions in Merrimack Pharmaceuticals Inc as of Jun 30, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 42
- +2 vs. Q1 2022
- Shares held
- 8.06M
- +159.3K (+2.0%) vs. Q1 2022
- Total value
- $48.0M
- −$1.39M (−2.8%) vs. Q1 2022
- New holders
- 3
- 11 more added
- Sold out
- 1
- 11 more reduced
Compare with Q1 2022: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MACK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1 | $0 |
| Q1 2026 | 1 | $0 |
| Q4 2025 | 1 | $0 |
| Q3 2025 | 1 | $0 |
| Q2 2025 | 1 | $0 |
| Q1 2025 | 1 | $0 |
| Q4 2024 | 2 | $370.7K |
| Q3 2024 | 2 | $0 |
| Q2 2024 | 12 | $5.32M |
| Q1 2024 | 70 | $138.5M |
| Q4 2023 | 67 | $126.4M |
| Q3 2023 | 63 | $104.4M |
| Q2 2023 | 62 | $98.5M |
| Q1 2023 | 50 | $91.0M |
| Q4 2022 | 47 | $86.6M |
| Q3 2022 | 41 | $30.0M |
| Q2 2022 | 42 | $48.0M |
| Q1 2022 | 40 | $49.4M |
| Q4 2021 | 37 | $29.4M |
| Q3 2021 | 38 | $37.1M |
| Q2 2021 | 42 | $50.3M |
| Q1 2021 | 43 | $49.8M |
Institutions, Q2 2022
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q1 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Newtyn Management, LLC | 1,758,005 | $10.5M | 1.98% | +44,393+2.6% | Added |
| Western Standard LLC | 1,269,558 | $7.55M | 5.73% | +97,095+8.3% | Added |
| 22NW, LP | 1,241,896 | $7.39M | 3.92% | 00.0% | Unchanged |
| Vanguard Group Inc | 608,204 | $3.62M | 0.00% | 00.0% | Unchanged |
| Bronte Capital Management Pty Ltd. | 578,313 | $3.44M | 0.42% | 00.0% | Unchanged |
| Nantahala Capital Management, LLC | 491,509 | $2.92M | 0.25% | −25,308−4.9% | Reduced |
| Dimensional Fund Advisors LP | 476,708 | $2.84M | 0.00% | −5,776−1.2% | Reduced |
| Point72 Asset Management, L.P. | 335,108 | $1.99M | 0.01% | −6,577−1.9% | Reduced |
| Sepio Capital, LP | 316,313 | $1.88M | 0.19% | +19,767+6.7% | Added |
| BlackRock Inc. | 207,715 | $1.24M | 0.00% | −3,724−1.8% | Reduced |
| Wittenberg Investment Management, Inc. | 188,694 | $1.12M | 0.47% | 00.0% | Unchanged |
| Yakira Capital Management, Inc. | 115,821 | $689.0K | 0.11% | +27,138+30.6% | Added |
| Geode Capital Management, LLC | 100,808 | $599.0K | 0.00% | +1,146+1.1% | Added |
| Bridgeway Capital Management, LLC | 59,200 | $352.0K | 0.01% | 00.0% | Unchanged |
| State Street Corp | 46,556 | $277.0K | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 40,951 | $244.0K | 0.00% | −45−0.1% | Reduced |
| Susquehanna International Group, LLP | 38,747 | $231.0K | 0.00% | +1,017+2.7% | Added |
| Simplex Trading, LLC | 36,468 | $216.0K | 0.01% | −1,351−3.6% | Reduced |
| Two Sigma Investments, LP | 24,919 | $148.0K | 0.00% | −5,820−18.9% | Reduced |
| Northern Trust Corp | 23,803 | $142.0K | 0.00% | −1,260−5.0% | Reduced |
| Two Sigma Advisers, LP | 18,981 | $113.0K | 0.00% | −4,200−18.1% | Reduced |
| Citadel Advisors LLC | 16,211 | $97.0K | 0.00% | +16,211 | New |
| Group One Trading, L.P. | 15,555 | $93.0K | 0.00% | +4,969+46.9% | Added |
| Brown Advisory Inc | 15,029 | $89.0K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 14,142 | $84.0K | 0.00% | +14,142 | New |
| Morgan Stanley | 7,358 | $43.0K | 0.00% | +1,235+20.2% | Added |
| Mascoma Wealth Management LLC | 5,000 | $30.0K | 0.01% | 00.0% | Unchanged |
| Royal Bank of Canada | 3,508 | $21.0K | 0.00% | 00.0% | Unchanged |
| Webster Bank, N. A. | 3,055 | $18.0K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 1,536 | $9.00K | 0.00% | +300+24.3% | Added |
| UBS Group AG | 1,244 | $8.00K | 0.00% | −1,059−46.0% | Reduced |
| Cubist Systematic Strategies, LLC | 800 | $5.00K | 0.00% | +432+117.4% | Added |
| Baldwin Brothers Inc | 500 | $3.00K | 0.00% | 00.0% | Unchanged |
| Kayne Anderson Rudnick Investment Management LLC | 300 | $2.00K | 0.00% | 00.0% | Unchanged |
| Sandy Spring Bank | 300 | $2.00K | 0.00% | 00.0% | Unchanged |
| Rise Advisors, LLC | 272 | $2.00K | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 91 | $1.00K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 160 | $1.00K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 60 | $0 | 0.00% | −133−68.9% | Reduced |
| Wells Fargo & Company | 122 | $0 | 0.00% | +6+5.2% | Added |
| AdvisorNet Financial, Inc | 20 | $0 | 0.00% | 00.0% | Unchanged |
| City State Bank | 25 | $0 | 0.00% | +25 | New |
| Radnor Capital Management, LLC | 0 | $0 | 0.00% | −13,332−100.0% | Sold out |