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, Q2 2021
Institutional positions in Merrimack Pharmaceuticals Inc as of Jun 30, 2021. 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
- −1 vs. Q1 2021
- Shares held
- 7.87M
- −61.2K (−0.8%) vs. Q1 2021
- Total value
- $50.3M
- +$479.0K (+1.0%) vs. Q1 2021
- New holders
- 5
- 7 more added
- Sold out
- 6
- 17 more reduced
Compare with Q1 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, Q2 2021
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| AdvisorNet Financial, Inc | 20 | $0 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 136 | $1.00K | 0.00% | −1−0.7% | Reduced |
| Federated Hermes, Inc. | 220 | $1.00K | 0.00% | −2−0.9% | Reduced |
| O'Shaughnessy Asset Management, LLC | 141 | $1.00K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 160 | $1.00K | 0.00% | 00.0% | Unchanged |
| Sandy Spring Bank | 300 | $2.00K | 0.00% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 328 | $2.00K | 0.00% | +328 | New |
| UBS Group AG | 499 | $3.00K | 0.00% | −1,194−70.5% | Reduced |
| Baldwin Brothers Inc | 500 | $3.00K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 525 | $3.00K | 0.00% | +525 | New |
| Bank of America Corp | 1,351 | $9.00K | 0.00% | +35+2.7% | Added |
| Royal Bank of Canada | 2,008 | $13.0K | 0.00% | 00.0% | Unchanged |
| Webster Bank, N. A. | 3,055 | $20.0K | 0.00% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 10,500 | $67.0K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 11,187 | $71.0K | 0.00% | −1,105−9.0% | Reduced |
| Morgan Stanley | 11,161 | $72.0K | 0.00% | +5,218+87.8% | Added |
| Cetera Advisor Networks LLC | 13,400 | $86.0K | 0.00% | +13,400 | New |
| Brown Advisory Inc | 15,029 | $96.0K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 19,152 | $122.0K | 0.00% | −1,592−7.7% | Reduced |
| Northern Trust Corp | 31,678 | $203.0K | 0.00% | −4,535−12.5% | Reduced |
| Group One Trading, L.P. | 34,493 | $220.0K | 0.00% | +34,493 | New |
| Marshall Wace, LLP | 39,150 | $250.0K | 0.00% | −52,616−57.3% | Reduced |
| Bank of New York Mellon Corp | 40,996 | $262.0K | 0.00% | −1,229−2.9% | Reduced |
| Susquehanna International Group, LLP | 41,822 | $267.0K | 0.00% | −64,507−60.7% | Reduced |
| Two Sigma Advisers, LP | 42,166 | $269.0K | 0.00% | −116,079−73.4% | Reduced |
| State Street Corp | 46,556 | $297.0K | 0.00% | +35,371+316.2% | Added |
| Bridgeway Capital Management, LLC | 59,200 | $378.0K | 0.01% | −5,000−7.8% | Reduced |
| Yakira Capital Management, Inc. | 60,634 | $387.0K | 0.06% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 62,119 | $397.0K | 0.00% | −154,722−71.4% | Reduced |
| Geode Capital Management, LLC | 96,692 | $617.0K | 0.00% | +5,484+6.0% | Added |
| Renaissance Technologies LLC | 101,970 | $652.0K | 0.00% | −86,191−45.8% | Reduced |
| BlackRock Inc. | 187,090 | $1.20M | 0.00% | −68,413−26.8% | Reduced |
| Wittenberg Investment Management, Inc. | 189,294 | $1.21M | 0.49% | +3,096+1.7% | Added |
| Point72 Asset Management, L.P. | 209,563 | $1.34M | 0.01% | +209,563 | New |
| Sepio Capital, LP | 221,439 | $1.42M | 0.12% | +2,532+1.2% | Added |
| Dimensional Fund Advisors LP | 517,645 | $3.31M | 0.00% | −1,575−0.3% | Reduced |
| Bronte Capital Management Pty Ltd. | 548,836 | $3.51M | 0.53% | −1,843−0.3% | Reduced |
| Nantahala Capital Management, LLC | 571,946 | $3.65M | 0.20% | −37,028−6.1% | Reduced |
| Vanguard Group Inc | 618,609 | $3.95M | 0.00% | 00.0% | Unchanged |
| 22NW, LP | 1,241,896 | $7.94M | 2.13% | 00.0% | Unchanged |
| Western Standard LLC | 1,269,558 | $8.11M | 4.84% | +257,987+25.5% | Added |
| Newtyn Management, LLC | 1,548,883 | $9.87M | 2.73% | 00.0% | Unchanged |
| Voya Financial Advisors, Inc. | 0 | $0 | 0.00% | −13,400−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −10,124−100.0% | Sold out |
| Mascoma Wealth Management LLC | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −2,579−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −320−100.0% | Sold out |
| The PNC Financial Services Group, Inc. | 0 | $0 | 0.00% | −200−100.0% | Sold out |