Merrimack Pharmaceuticals Inc
MACKDelisted May 10, 2024- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001274792
Merrimack Pharmaceuticals Inc was delisted on May 10, 2024; its insiders filed their last Form 4 on Dec 28, 2023; 70 institutions reported holding it in 13F filings for Q1 2024, worth $137.1M in total; no superinvestor held it.
13F holders, Q1 2022
Institutional positions in Merrimack Pharmaceuticals Inc as of Mar 31, 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
- 40
- +3 vs. Q4 2021
- Shares held
- 7.90M
- +407.0K (+5.4%) vs. Q4 2021
- Total value
- $49.4M
- +$20.1M (+68.4%) vs. Q4 2021
- New holders
- 4
- 8 more added
- Sold out
- 1
- 10 more reduced
Compare with Q4 2021: 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 | $137.1M |
| Q4 2023 | 67 | $124.9M |
| 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 | $29.3M |
| Q3 2021 | 38 | $37.1M |
| Q2 2021 | 42 | $50.3M |
| Q1 2021 | 43 | $49.8M |
Institutions, Q1 2022
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q4 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Newtyn Management, LLC | 1,713,612 | $10.8M | 2.59% | +164,729+10.6% | Added |
| 22NW, LP | 1,241,896 | $7.86M | 2.85% | 00.0% | Unchanged |
| Western Standard LLC | 1,172,463 | $6.80M | 6.46% | 00.0% | Unchanged |
| Vanguard Group Inc | 608,204 | $3.85M | 0.00% | −8,644−1.4% | Reduced |
| Bronte Capital Management Pty Ltd. | 578,313 | $3.66M | 0.52% | +40,729+7.6% | Added |
| Nantahala Capital Management, LLC | 516,817 | $3.27M | 0.23% | −53,154−9.3% | Reduced |
| Dimensional Fund Advisors LP | 482,484 | $3.05M | 0.00% | −6,203−1.3% | Reduced |
| Point72 Asset Management, L.P. | 341,685 | $2.16M | 0.01% | 00.0% | Unchanged |
| Sepio Capital, LP | 296,546 | $1.88M | 0.16% | +217,717+276.2% | Added |
| BlackRock Inc. | 211,439 | $1.34M | 0.00% | −1,224−0.6% | Reduced |
| Wittenberg Investment Management, Inc. | 188,694 | $1.19M | 0.45% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 99,662 | $630.0K | 0.00% | +2,970+3.1% | Added |
| Yakira Capital Management, Inc. | 88,683 | $561.0K | 0.08% | +15,233+20.7% | Added |
| Bridgeway Capital Management, LLC | 59,200 | $374.0K | 0.01% | 00.0% | Unchanged |
| State Street Corp | 46,556 | $294.0K | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 40,996 | $259.0K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 37,730 | $239.0K | 0.00% | +10,431+38.2% | Added |
| Simplex Trading, LLC | 37,819 | $239.0K | 0.01% | +37,819 | New |
| Two Sigma Investments, LP | 30,739 | $194.0K | 0.00% | −5,227−14.5% | Reduced |
| Northern Trust Corp | 25,063 | $159.0K | 0.00% | −88−0.3% | Reduced |
| Two Sigma Advisers, LP | 23,181 | $147.0K | 0.00% | −2,500−9.7% | Reduced |
| Brown Advisory Inc | 15,029 | $95.0K | 0.00% | 00.0% | Unchanged |
| Radnor Capital Management, LLC | 13,332 | $84.0K | 0.02% | 00.0% | Unchanged |
| Group One Trading, L.P. | 10,586 | $67.0K | 0.00% | +10,586 | New |
| Morgan Stanley | 6,123 | $39.0K | 0.00% | +1,001+19.5% | Added |
| Mascoma Wealth Management LLC | 5,000 | $32.0K | 0.01% | 00.0% | Unchanged |
| Royal Bank of Canada | 3,508 | $22.0K | 0.00% | −9−0.3% | Reduced |
| Webster Bank, N. A. | 3,055 | $19.0K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 2,303 | $15.0K | 0.00% | +2,106+1,069.0% | Added |
| Bank of America Corp | 1,236 | $8.00K | 0.00% | −21−1.7% | Reduced |
| Baldwin Brothers Inc | 500 | $3.00K | 0.00% | 00.0% | Unchanged |
| Rise Advisors, LLC | 272 | $2.00K | 0.00% | 00.0% | Unchanged |
| Sandy Spring Bank | 300 | $2.00K | 0.00% | 00.0% | Unchanged |
| Kayne Anderson Rudnick Investment Management LLC | 300 | $2.00K | 0.00% | +300 | New |
| Cubist Systematic Strategies, LLC | 368 | $2.00K | 0.00% | +368 | New |
| Tower Research Capital LLC (TRC) | 193 | $1.00K | 0.00% | −435−69.3% | Reduced |
| Federated Hermes, Inc. | 91 | $1.00K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 160 | $1.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 116 | $0 | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 20 | $0 | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −19,461−100.0% | Sold out |