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, Q3 2023
Institutional positions in Merrimack Pharmaceuticals Inc as of Sep 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
- 63
- +1 vs. Q2 2023
- Shares held
- 8.47M
- +464.6K (+5.8%) vs. Q2 2023
- Total value
- $104.4M
- +$5.97M (+6.1%) vs. Q2 2023
- New holders
- 7
- 17 more added
- Sold out
- 6
- 16 more reduced
Compare with Q2 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, Q3 2023
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Western Standard LLC | 1,894,013 | $23.4M | 21.09% | +221,550+13.2% | Added |
| Newtyn Management, LLC | 1,873,694 | $23.1M | 5.70% | 00.0% | Unchanged |
| BlackRock Inc. | 690,817 | $8.52M | 0.00% | +14,527+2.1% | Added |
| Vanguard Group Inc | 600,344 | $7.40M | 0.00% | +43,546+7.8% | Added |
| Madison Avenue Partners, LP | 553,085 | $6.82M | 0.97% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 448,752 | $5.53M | 0.00% | −11,208−2.4% | Reduced |
| Sepio Capital, LP | 306,680 | $3.78M | 0.33% | +12,135+4.1% | Added |
| Sio Capital Management, LLC | 288,466 | $3.56M | 1.10% | −2,283−0.8% | Reduced |
| Geode Capital Management, LLC | 251,585 | $3.10M | 0.00% | +7,783+3.2% | Added |
| Wittenberg Investment Management, Inc. | 209,739 | $2.59M | 0.95% | +4,745+2.3% | Added |
| State Street Corp | 191,844 | $2.37M | 0.00% | +17,739+10.2% | Added |
| Centiva Capital, LP | 187,803 | $2.32M | 0.12% | +187,803 | New |
| Susquehanna International Group, LLP | 156,653 | $1.93M | 0.00% | +83,038+112.8% | Added |
| Indaba Capital Management, L.P. | 136,802 | $1.69M | 0.50% | +136,802 | New |
| Northern Trust Corp | 115,369 | $1.42M | 0.00% | −623−0.5% | Reduced |
| Bank of New York Mellon Corp | 99,703 | $1.23M | 0.00% | −614−0.6% | Reduced |
| Kennedy Capital Management, Inc. | 93,708 | $1.16M | 0.03% | +2,202+2.4% | Added |
| Morgan Stanley | 93,177 | $1.15M | 0.00% | +10,492+12.7% | Added |
| Yakira Capital Management, Inc. | 54,118 | $667.3K | 0.18% | −10,000−15.6% | Reduced |
| Goldman Sachs Group Inc | 34,953 | $431.0K | 0.00% | +20,811+147.2% | Added |
| Bridgeway Capital Management, LLC | 34,200 | $421.7K | 0.01% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 29,628 | $365.3K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 13,879 | $171.1K | 0.00% | +1,313+10.4% | Added |
| Nuveen Asset Management, LLC | 13,719 | $169.2K | 0.00% | 00.0% | Unchanged |
| Fifth Lane Capital, LP | 10,929 | $134.4K | 0.14% | 00.0% | Unchanged |
| FMR LLC | 9,326 | $115.0K | 0.00% | +8,990+2,675.6% | Added |
| New York State Common Retirement Fund | 8,207 | $101.2K | 0.00% | +107+1.3% | Added |
| JPMorgan Chase & Co | 6,787 | $83.7K | 0.00% | −1,557−18.7% | Reduced |
| Bank of America Corp | 6,054 | $74.6K | 0.00% | +2,239+58.7% | Added |
| UBS Group AG | 5,848 | $72.1K | 0.00% | −711−10.8% | Reduced |
| MetLife Investment Management | 5,610 | $69.2K | 0.00% | 00.0% | Unchanged |
| American International Group, Inc. | 5,225 | $64.4K | 0.00% | +186+3.7% | Added |
| Mascoma Wealth Management LLC | 5,000 | $61.6K | 0.02% | 00.0% | Unchanged |
| Group One Trading, L.P. | 4,528 | $55.8K | 0.00% | +4,528 | New |
| Citadel Advisors LLC | 3,398 | $41.9K | 0.00% | −299−8.1% | Reduced |
| Lazard Asset Management LLC | 3,123 | $38.0K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 2,310 | $28.5K | 0.00% | −1,173−33.7% | Reduced |
| Wells Fargo & Company | 2,173 | $26.8K | 0.00% | −2,273−51.1% | Reduced |
| Dorsey Wright & Associates | 1,933 | $23.8K | 0.01% | −67−3.4% | Reduced |
| Barclays PLC | 1,845 | $22.7K | 0.00% | −3,772−67.2% | Reduced |
| Amalgamated Bank | 1,587 | $20.0K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 1,539 | $19.0K | 0.00% | −1,187−43.5% | Reduced |
| Webster Bank, N. A. | 1,527 | $18.8K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 1,406 | $17.3K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,341 | $16.0K | 0.00% | +86+6.9% | Added |
| Legal & General Group Plc | 1,286 | $15.9K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,164 | $14.4K | 0.00% | −9,403−89.0% | Reduced |
| Deutsche Bank AG | 910 | $11.2K | 0.00% | +910 | New |
| Ameritas Investment Partners, Inc. | 865 | $10.7K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 864 | $10.7K | 0.00% | +864 | New |
| Metropolitan Life Insurance Co | 581 | $7.16K | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 500 | $6.17K | 0.00% | +500 | New |
| Kayne Anderson Rudnick Investment Management LLC | 300 | $3.70K | 0.00% | 00.0% | Unchanged |
| Sandy Spring Bank | 300 | $3.70K | 0.00% | 00.0% | Unchanged |
| Rise Advisors, LLC | 272 | $3.35K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 160 | $2.00K | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 88 | $1.08K | 0.00% | −2−2.2% | Reduced |
| Horrell Capital Management, Inc. | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 87 | $1.00K | 0.00% | 00.0% | Unchanged |
| Armstrong Advisory Group, Inc | 45 | $555 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 24 | $296 | 0.00% | −3,093−99.2% | Reduced |
| AdvisorNet Financial, Inc | 20 | $247 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 15 | $185 | 0.00% | +15 | New |
| Nantahala Capital Management, LLC | 0 | $0 | 0.00% | −111,148−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −87,037−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −46,437−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −14,405−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −10,749−100.0% | Sold out |
| CWM, LLC | 0 | $0 | 0.00% | −275−100.0% | Sold out |