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 2024
Institutional positions in Merrimack Pharmaceuticals Inc as of Jun 30, 2024. 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
MACK is no longer listed, and 13F filings after Q1 2024 list far fewer holders. See Q1 2024
- Institutional holders
- 12
- −58 vs. Q1 2024
- Shares held
- 437.3K
- −8.85M (−95.3%) vs. Q1 2024
- Total value
- $5.32M
- −$131.8M (−96.1%) vs. Q1 2024
- New holders
- 4
- 2 more added
- Sold out
- 62
- 2 more reduced
Compare with Q1 2024: 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 2024
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Dimensional Fund Advisors LP | 318,995 | $4.83M | 0.00% | −79,006−19.9% | Reduced |
| Goldman Sachs Group Inc | 29,807 | $451.0K | 0.00% | +15,336+106.0% | Added |
| Rhumbline Advisers | 2,480 | $37.5K | 0.00% | −11,039−81.7% | Reduced |
| Rise Advisors, LLC | 272 | $4.11K | 0.00% | 00.0% | Unchanged |
| JBF Capital, Inc. | 39,637 | $1.19K | 0.00% | +39,637 | New |
| Marshall Wace, LLP | 38,221 | $1.15K | 0.00% | +38,221 | New |
| Cornerstone Planning Group LLC | 231 | $0 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 106 | $0 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 15 | $0 | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 22 | $0 | 0.00% | +17+340.0% | Added |
| Caldwell Sutter Capital, Inc. | 7,458 | $0 | 0.00% | +7,458 | New |
| Farther Finance Advisors, LLC | 77 | $0 | 0.00% | +77 | New |
| Western Standard LLC | 0 | $0 | 0.00% | −2,172,513−100.0% | Sold out |
| Newtyn Management, LLC | 0 | $0 | 0.00% | −1,873,694−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −902,350−100.0% | Sold out |
| BlackRock Inc. | 0 | $0 | 0.00% | −723,294−100.0% | Sold out |
| Vanguard Group Inc | 0 | $0 | 0.00% | −620,847−100.0% | Sold out |
| Madison Avenue Partners, LP | 0 | $0 | 0.00% | −387,221−100.0% | Sold out |
| Sepio Capital, LP | 0 | $0 | 0.00% | −298,545−100.0% | Sold out |
| Invesco Ltd. | 0 | $0 | 0.00% | −277,124−100.0% | Sold out |
| Geode Capital Management, LLC | 0 | $0 | 0.00% | −272,015−100.0% | Sold out |
| State Street Corp | 0 | $0 | 0.00% | −246,853−100.0% | Sold out |
| Wittenberg Investment Management, Inc. | 0 | $0 | 0.00% | −210,239−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −162,184−100.0% | Sold out |
| Yakira Capital Management, Inc. | 0 | $0 | 0.00% | −120,756−100.0% | Sold out |
| Northern Trust Corp | 0 | $0 | 0.00% | −117,548−100.0% | Sold out |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −94,895−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −77,397−100.0% | Sold out |
| Morgan Stanley | 0 | $0 | 0.00% | −39,442−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −34,200−100.0% | Sold out |
| Charles Schwab Investment Management Inc | 0 | $0 | 0.00% | −29,628−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −20,401−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −19,000−100.0% | Sold out |
| Nuveen Asset Management, LLC | 0 | $0 | 0.00% | −13,719−100.0% | Sold out |
| Johnson Investment Counsel Inc | 0 | $0 | 0.00% | −13,480−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −12,442−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −11,786−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −11,124−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −10,800−100.0% | Sold out |
| Martingale Asset Management L P | 0 | $0 | 0.00% | −10,520−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −10,006−100.0% | Sold out |
| Aristides Capital LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −8,263−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −7,348−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −5,610−100.0% | Sold out |
| American International Group, Inc. | 0 | $0 | 0.00% | −5,160−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −5,077−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −3,964−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −3,211−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −2,830−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −1,956−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −1,406−100.0% | Sold out |
| New York State Common Retirement Fund | 0 | $0 | 0.00% | −1,287−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −1,111−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −1,053−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −980−100.0% | Sold out |
| Ameritas Investment Partners, Inc. | 0 | $0 | 0.00% | −865−100.0% | Sold out |
| Metropolitan Life Insurance Co | 0 | $0 | 0.00% | −581−100.0% | Sold out |
| Comerica Bank | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −444−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −435−100.0% | Sold out |
| Deutsche Bank AG | 0 | $0 | 0.00% | −383−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −353−100.0% | Sold out |
| Kayne Anderson Rudnick Investment Management LLC | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Sandy Spring Bank | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −280−100.0% | Sold out |
| The PNC Financial Services Group, Inc. | 0 | $0 | 0.00% | −165−100.0% | Sold out |
| TSFG, LLC | 0 | $0 | 0.00% | −160−100.0% | Sold out |
| POM Investment Strategies, LLC | 0 | $0 | 0.00% | −69−100.0% | Sold out |
| Horrell Capital Management, Inc. | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| Armstrong Advisory Group, Inc | 0 | $0 | 0.00% | −45−100.0% | Sold out |
| GAMMA Investing LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Capital Advisors, Ltd. LLC | 0 | $0 | 0.00% | −28−100.0% | Sold out |