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 2023
Institutional positions in Merrimack Pharmaceuticals Inc as of Jun 30, 2023. 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
- 62
- +12 vs. Q1 2023
- Shares held
- 8.01M
- +603.6K (+8.2%) vs. Q1 2023
- Total value
- $98.5M
- +$7.50M (+8.2%) vs. Q1 2023
- New holders
- 18
- 18 more added
- Sold out
- 6
- 10 more reduced
Compare with Q1 2023: 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 2023
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| AdvisorNet Financial, Inc | 20 | $246 | 0.00% | 00.0% | Unchanged |
| Armstrong Advisory Group, Inc | 45 | $554 | 0.00% | 00.0% | Unchanged |
| Horrell Capital Management, Inc. | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 87 | $1.00K | 0.00% | +87 | New |
| Federated Hermes, Inc. | 90 | $1.11K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 160 | $2.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 275 | $3.00K | 0.00% | +275 | New |
| Rise Advisors, LLC | 272 | $3.34K | 0.00% | 00.0% | Unchanged |
| Kayne Anderson Rudnick Investment Management LLC | 300 | $3.69K | 0.00% | 00.0% | Unchanged |
| Sandy Spring Bank | 300 | $3.69K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 336 | $4.13K | 0.00% | +166+97.6% | Added |
| Metropolitan Life Insurance Co | 581 | $7.15K | 0.00% | +581 | New |
| Ameritas Investment Partners, Inc. | 865 | $10.6K | 0.00% | +865 | New |
| Royal Bank of Canada | 1,255 | $15.0K | 0.00% | +1,247+15,587.5% | Added |
| Legal & General Group Plc | 1,286 | $15.8K | 0.00% | +1,286 | New |
| GWM Advisors LLC | 1,406 | $17.3K | 0.00% | 00.0% | Unchanged |
| Webster Bank, N. A. | 1,527 | $18.8K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 1,587 | $20.0K | 0.00% | +1,587 | New |
| Dorsey Wright & Associates | 2,000 | $24.6K | 0.01% | +201+11.2% | Added |
| BNP Paribas Arbitrage, SA | 2,726 | $33.5K | 0.00% | +2,726 | New |
| Lazard Asset Management LLC | 3,123 | $38.0K | 0.00% | −1,828−36.9% | Reduced |
| Citigroup Inc | 3,117 | $38.3K | 0.00% | +3,117 | New |
| California State Teachers Retirement System | 3,483 | $42.8K | 0.00% | +3,483 | New |
| Citadel Advisors LLC | 3,697 | $45.5K | 0.00% | −4,794−56.5% | Reduced |
| Bank of America Corp | 3,815 | $46.9K | 0.00% | +2,322+155.5% | Added |
| Wells Fargo & Company | 4,446 | $54.7K | 0.00% | +4,276+2,515.3% | Added |
| Mascoma Wealth Management LLC | 5,000 | $61.1K | 0.02% | 00.0% | Unchanged |
| American International Group, Inc. | 5,039 | $62.0K | 0.00% | +5,039 | New |
| MetLife Investment Management | 5,610 | $69.0K | 0.00% | +5,610 | New |
| Barclays PLC | 5,617 | $69.1K | 0.00% | +179+3.3% | Added |
| UBS Group AG | 6,559 | $80.7K | 0.00% | +3,431+109.7% | Added |
| New York State Common Retirement Fund | 8,100 | $99.6K | 0.00% | +8,100 | New |
| JPMorgan Chase & Co | 8,344 | $102.6K | 0.00% | +8,344 | New |
| Tower Research Capital LLC (TRC) | 10,567 | $130.0K | 0.00% | +9,332+755.6% | Added |
| Millennium Management LLC | 10,749 | $132.2K | 0.00% | −29,455−73.3% | Reduced |
| Fifth Lane Capital, LP | 10,929 | $134.4K | 0.13% | +10,929 | New |
| Rhumbline Advisers | 12,566 | $154.6K | 0.00% | +12,566 | New |
| Nuveen Asset Management, LLC | 13,719 | $168.7K | 0.00% | +13,719 | New |
| Goldman Sachs Group Inc | 14,142 | $173.9K | 0.00% | −20,756−59.5% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 14,405 | $177.2K | 0.00% | +14,405 | New |
| Charles Schwab Investment Management Inc | 29,628 | $364.4K | 0.00% | +29,628 | New |
| Bridgeway Capital Management, LLC | 34,200 | $420.7K | 0.01% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 46,437 | $571.2K | 0.02% | −70,999−60.5% | Reduced |
| Yakira Capital Management, Inc. | 64,118 | $788.7K | 0.21% | −8,000−11.1% | Reduced |
| Susquehanna International Group, LLP | 73,615 | $905.5K | 0.00% | −65,380−47.0% | Reduced |
| Morgan Stanley | 82,685 | $1.02M | 0.00% | +28,525+52.7% | Added |
| Marshall Wace, LLP | 87,037 | $1.07M | 0.00% | −11,218−11.4% | Reduced |
| Kennedy Capital Management, Inc. | 91,506 | $1.13M | 0.03% | +77,748+565.1% | Added |
| Bank of New York Mellon Corp | 100,317 | $1.23M | 0.00% | +25,437+34.0% | Added |
| Nantahala Capital Management, LLC | 111,148 | $1.37M | 0.17% | −80,118−41.9% | Reduced |
| Northern Trust Corp | 115,992 | $1.43M | 0.00% | +88,044+315.0% | Added |
| State Street Corp | 174,105 | $2.14M | 0.00% | +123,549+244.4% | Added |
| Wittenberg Investment Management, Inc. | 204,994 | $2.52M | 0.91% | +7,000+3.5% | Added |
| Geode Capital Management, LLC | 243,802 | $3.00M | 0.00% | +113,638+87.3% | Added |
| Sio Capital Management, LLC | 290,749 | $3.58M | 1.26% | +17,906+6.6% | Added |
| Sepio Capital, LP | 294,545 | $3.62M | 0.29% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 459,960 | $5.66M | 0.00% | −6,180−1.3% | Reduced |
| Madison Avenue Partners, LP | 553,085 | $6.80M | 1.48% | 00.0% | Unchanged |
| Vanguard Group Inc | 556,798 | $6.85M | 0.00% | +98,277+21.4% | Added |
| BlackRock Inc. | 676,290 | $8.32M | 0.00% | +454,037+204.3% | Added |
| Western Standard LLC | 1,672,463 | $20.6M | 17.86% | 00.0% | Unchanged |
| Newtyn Management, LLC | 1,873,694 | $23.0M | 5.44% | 00.0% | Unchanged |
| Invesco Ltd. | 0 | $0 | 0.00% | −210,507−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −37,307−100.0% | Sold out |
| Brown Advisory Inc | 0 | $0 | 0.00% | −15,029−100.0% | Sold out |
| Belvedere Trading LLC | 0 | $0 | 0.00% | −10,888−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −1,060−100.0% | Sold out |
| Baldwin Brothers Inc | 0 | $0 | 0.00% | −500−100.0% | Sold out |