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 2024
Institutional positions in Merrimack Pharmaceuticals Inc as of Mar 31, 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
- Institutional holders
- 70
- +3 vs. Q4 2023
- Shares held
- 9.28M
- −26.0K (−0.3%) vs. Q4 2023
- Total value
- $137.1M
- +$12.3M (+9.8%) vs. Q4 2023
- New holders
- 12
- 15 more added
- Sold out
- 9
- 21 more reduced
Compare with Q4 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, Q1 2024
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Western Standard LLC | 2,172,513 | $32.1M | 30.25% | 00.0% | Unchanged |
| Newtyn Management, LLC | 1,873,694 | $27.7M | 5.51% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 902,350 | $13.3M | 3.64% | +352,932+64.2% | Added |
| BlackRock Inc. | 723,294 | $10.7M | 0.00% | −20,329−2.7% | Reduced |
| Vanguard Group Inc | 620,847 | $9.17M | 0.00% | +11,893+2.0% | Added |
| Dimensional Fund Advisors LP | 398,001 | $5.88M | 0.00% | −37,644−8.6% | Reduced |
| Madison Avenue Partners, LP | 387,221 | $5.72M | 0.92% | −165,864−30.0% | Reduced |
| Sepio Capital, LP | 298,545 | $4.41M | 0.38% | −8,135−2.7% | Reduced |
| Invesco Ltd. | 277,124 | $4.09M | 0.00% | +265,058+2,196.7% | Added |
| Geode Capital Management, LLC | 272,015 | $4.02M | 0.00% | +12,069+4.6% | Added |
| State Street Corp | 246,853 | $3.65M | 0.00% | +50,148+25.5% | Added |
| Wittenberg Investment Management, Inc. | 210,239 | $3.11M | 1.06% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 162,184 | $2.40M | 0.00% | +113,284+231.7% | Added |
| Yakira Capital Management, Inc. | 120,756 | $1.78M | 0.62% | +66,638+123.1% | Added |
| Northern Trust Corp | 117,548 | $1.74M | 0.00% | +639+0.5% | Added |
| Bank of New York Mellon Corp | 94,895 | $1.40M | 0.00% | −5,302−5.3% | Reduced |
| Susquehanna International Group, LLP | 77,397 | $1.14M | 0.00% | −3,244−4.0% | Reduced |
| Morgan Stanley | 39,442 | $582.6K | 0.00% | −70,096−64.0% | Reduced |
| Bridgeway Capital Management, LLC | 34,200 | $505.1K | 0.01% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 29,628 | $437.6K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 20,401 | $301.3K | 0.00% | −1,433−6.6% | Reduced |
| STRS Ohio | 19,000 | $280.0K | 0.00% | +15,700+475.8% | Added |
| Goldman Sachs Group Inc | 14,471 | $213.7K | 0.00% | −20,726−58.9% | Reduced |
| Nuveen Asset Management, LLC | 13,719 | $202.6K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 13,519 | $199.7K | 0.00% | −432−3.1% | Reduced |
| Johnson Investment Counsel Inc | 13,480 | $199.1K | 0.00% | +13,480 | New |
| UBS Group AG | 12,442 | $183.8K | 0.00% | −775−5.9% | Reduced |
| JPMorgan Chase & Co | 11,786 | $174.1K | 0.00% | +4,997+73.6% | Added |
| Jane Street Group, LLC | 11,124 | $164.3K | 0.00% | +11,124 | New |
| Schonfeld Strategic Advisors LLC | 10,800 | $159.5K | 0.00% | +10,800 | New |
| Martingale Asset Management L P | 10,520 | $155.4K | 0.00% | +10,520 | New |
| Sherbrooke Park Advisers LLC | 10,006 | $147.8K | 0.03% | +10,006 | New |
| Aristides Capital LLC | 10,000 | $147.7K | 0.06% | +10,000 | New |
| FMR LLC | 8,263 | $122.0K | 0.00% | −654−7.3% | Reduced |
| Barclays PLC | 7,348 | $108.5K | 0.00% | −7,032−48.9% | Reduced |
| MetLife Investment Management | 5,610 | $82.9K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 5,160 | $76.2K | 0.00% | −44−0.8% | Reduced |
| BNP Paribas Arbitrage, SA | 5,077 | $75.0K | 0.00% | +2,043+67.3% | Added |
| Bank of America Corp | 3,964 | $58.5K | 0.00% | −8,560−68.3% | Reduced |
| Wells Fargo & Company | 3,211 | $47.4K | 0.00% | +419+15.0% | Added |
| Lazard Asset Management LLC | 2,830 | $41.0K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1,956 | $28.9K | 0.00% | +384+24.4% | Added |
| GWM Advisors LLC | 1,406 | $20.8K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 1,287 | $19.0K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 1,111 | $16.4K | 0.00% | +45+4.2% | Added |
| California State Teachers Retirement System | 1,053 | $15.6K | 0.00% | −670−38.9% | Reduced |
| Legal & General Group Plc | 980 | $14.5K | 0.00% | −306−23.8% | Reduced |
| Ameritas Investment Partners, Inc. | 865 | $12.8K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 581 | $8.58K | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 500 | $7.38K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 444 | $6.56K | 0.00% | +444 | New |
| Royal Bank of Canada | 435 | $6.00K | 0.00% | −3,053−87.5% | Reduced |
| Deutsche Bank AG | 383 | $5.66K | 0.00% | −596−60.9% | Reduced |
| Amalgamated Bank | 353 | $5.00K | 0.00% | −1,129−76.2% | Reduced |
| Kayne Anderson Rudnick Investment Management LLC | 300 | $4.43K | 0.00% | 00.0% | Unchanged |
| Sandy Spring Bank | 300 | $4.43K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 280 | $4.14K | 0.00% | −986−77.9% | Reduced |
| Rise Advisors, LLC | 272 | $4.01K | 0.00% | 00.0% | Unchanged |
| Cornerstone Planning Group LLC | 231 | $3.46K | 0.00% | +231 | New |
| The PNC Financial Services Group, Inc. | 165 | $2.44K | 0.00% | +157+1,962.5% | Added |
| TSFG, LLC | 160 | $2.00K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 106 | $2.00K | 0.00% | 00.0% | Unchanged |
| POM Investment Strategies, LLC | 69 | $1.02K | 0.00% | +69 | New |
| Horrell Capital Management, Inc. | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Armstrong Advisory Group, Inc | 45 | $604 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 15 | $222 | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 2 | $30 | 0.00% | 00.0% | Unchanged |
| Nelson, Van Denburg & Campbell Wealth Management Group, LLC | 2 | $29 | 0.00% | +2 | New |
| CWM, LLC | 5 | $0 | 0.00% | +5 | New |
| Capital Advisors, Ltd. LLC | 28 | $0 | 0.00% | +28 | New |
| Sio Capital Management, LLC | 0 | $0 | 0.00% | −288,466−100.0% | Sold out |
| Indaba Capital Management, L.P. | 0 | $0 | 0.00% | −223,459−100.0% | Sold out |
| Rosalind Advisors, Inc. | 0 | $0 | 0.00% | −60,000−100.0% | Sold out |
| Kennedy Capital Management, Inc. | 0 | $0 | 0.00% | −46,202−100.0% | Sold out |
| Allspring Global Investments Holdings, LLC | 0 | $0 | 0.00% | −11,827−100.0% | Sold out |
| AJOVista, LLC | 0 | $0 | 0.00% | −1,544−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −236−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −85−100.0% | Sold out |