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, Q4 2023
Institutional positions in Merrimack Pharmaceuticals Inc as of Dec 31, 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
- 67
- +4 vs. Q3 2023
- Shares held
- 9.31M
- +840.9K (+9.9%) vs. Q3 2023
- Total value
- $124.9M
- +$20.4M (+19.6%) vs. Q3 2023
- New holders
- 11
- 24 more added
- Sold out
- 7
- 11 more reduced
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| GAMMA Investing LLC | 2 | $27 | 0.00% | +2 | New |
| The PNC Financial Services Group, Inc. | 8 | $107 | 0.00% | +8 | New |
| Nisa Investment Advisors, LLC | 15 | $201 | 0.00% | 00.0% | Unchanged |
| Armstrong Advisory Group, Inc | 45 | $604 | 0.00% | 00.0% | Unchanged |
| Horrell Capital Management, Inc. | 50 | $1.00K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 106 | $1.00K | 0.00% | +19+21.8% | Added |
| Federated Hermes, Inc. | 85 | $1.14K | 0.00% | −3−3.4% | Reduced |
| TSFG, LLC | 160 | $2.00K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 236 | $3.17K | 0.00% | −4,292−94.8% | Reduced |
| Rise Advisors, LLC | 272 | $3.64K | 0.00% | 00.0% | Unchanged |
| Kayne Anderson Rudnick Investment Management LLC | 300 | $4.02K | 0.00% | 00.0% | Unchanged |
| Sandy Spring Bank | 300 | $4.02K | 0.00% | 00.0% | Unchanged |
| Headlands Technologies LLC | 300 | $4.02K | 0.00% | +300 | New |
| Comerica Bank | 500 | $6.71K | 0.00% | 00.0% | Unchanged |
| Metropolitan Life Insurance Co | 581 | $7.79K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 865 | $11.6K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 979 | $13.1K | 0.00% | +69+7.6% | Added |
| Russell Investments Group, Ltd. | 1,066 | $14.3K | 0.00% | +202+23.4% | Added |
| Tower Research Capital LLC (TRC) | 1,266 | $17.0K | 0.00% | +102+8.8% | Added |
| Legal & General Group Plc | 1,286 | $17.2K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 1,287 | $17.3K | 0.00% | −6,920−84.3% | Reduced |
| GWM Advisors LLC | 1,406 | $18.9K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 1,482 | $20.0K | 0.00% | −105−6.6% | Reduced |
| AJOVista, LLC | 1,544 | $20.7K | 0.03% | +1,544 | New |
| Citigroup Inc | 1,572 | $21.1K | 0.00% | +1,548+6,450.0% | Added |
| California State Teachers Retirement System | 1,723 | $23.1K | 0.00% | −587−25.4% | Reduced |
| Lazard Asset Management LLC | 2,830 | $37.0K | 0.00% | −293−9.4% | Reduced |
| Wells Fargo & Company | 2,792 | $37.4K | 0.00% | +619+28.5% | Added |
| BNP Paribas Arbitrage, SA | 3,034 | $40.7K | 0.00% | +1,495+97.1% | Added |
| STRS Ohio | 3,300 | $44.0K | 0.00% | +3,300 | New |
| Royal Bank of Canada | 3,488 | $47.0K | 0.00% | +2,147+160.1% | Added |
| American International Group, Inc. | 5,204 | $69.8K | 0.00% | −21−0.4% | Reduced |
| MetLife Investment Management | 5,610 | $75.2K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 6,789 | $91.0K | 0.00% | +20.0% | Added |
| FMR LLC | 8,917 | $119.6K | 0.00% | −409−4.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 11,827 | $158.6K | 0.00% | +11,827 | New |
| Invesco Ltd. | 12,066 | $161.8K | 0.00% | +12,066 | New |
| Bank of America Corp | 12,524 | $167.9K | 0.00% | +6,470+106.9% | Added |
| UBS Group AG | 13,217 | $177.2K | 0.00% | +7,369+126.0% | Added |
| Nuveen Asset Management, LLC | 13,719 | $184.0K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 13,951 | $187.1K | 0.00% | +72+0.5% | Added |
| Barclays PLC | 14,380 | $192.8K | 0.00% | +12,535+679.4% | Added |
| Two Sigma Investments, LP | 21,834 | $292.8K | 0.00% | +21,834 | New |
| Charles Schwab Investment Management Inc | 29,628 | $397.3K | 0.00% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 34,200 | $458.6K | 0.01% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 35,197 | $472.0K | 0.00% | +244+0.7% | Added |
| Kennedy Capital Management, Inc. | 46,202 | $619.6K | 0.01% | −47,506−50.7% | Reduced |
| Renaissance Technologies LLC | 48,900 | $656.0K | 0.00% | +48,900 | New |
| Yakira Capital Management, Inc. | 54,118 | $725.7K | 0.24% | 00.0% | Unchanged |
| Rosalind Advisors, Inc. | 60,000 | $804.6K | 0.67% | +60,000 | New |
| Susquehanna International Group, LLP | 80,641 | $1.08M | 0.00% | −76,012−48.5% | Reduced |
| Bank of New York Mellon Corp | 100,197 | $1.34M | 0.00% | +494+0.5% | Added |
| Morgan Stanley | 109,538 | $1.47M | 0.00% | +16,361+17.6% | Added |
| Northern Trust Corp | 116,909 | $1.57M | 0.00% | +1,540+1.3% | Added |
| State Street Corp | 196,705 | $2.64M | 0.00% | +4,861+2.5% | Added |
| Wittenberg Investment Management, Inc. | 210,239 | $2.82M | 0.98% | +500+0.2% | Added |
| Indaba Capital Management, L.P. | 223,459 | $3.00M | 1.72% | +86,657+63.3% | Added |
| Geode Capital Management, LLC | 259,946 | $3.49M | 0.00% | +8,361+3.3% | Added |
| Sio Capital Management, LLC | 288,466 | $3.87M | 1.00% | 00.0% | Unchanged |
| Sepio Capital, LP | 306,680 | $4.11M | 0.35% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 435,645 | $5.84M | 0.00% | −13,107−2.9% | Reduced |
| ADAR1 Capital Management, LLC | 549,418 | $7.37M | 3.30% | +549,418 | New |
| Madison Avenue Partners, LP | 553,085 | $7.42M | 1.05% | 00.0% | Unchanged |
| Vanguard Group Inc | 608,954 | $8.17M | 0.00% | +8,610+1.4% | Added |
| BlackRock Inc. | 743,623 | $9.97M | 0.00% | +52,806+7.6% | Added |
| Newtyn Management, LLC | 1,873,694 | $25.1M | 4.93% | 00.0% | Unchanged |
| Western Standard LLC | 2,172,513 | $29.1M | 27.47% | +278,500+14.7% | Added |
| Centiva Capital, LP | 0 | $0 | 0.00% | −187,803−100.0% | Sold out |
| Fifth Lane Capital, LP | 0 | $0 | 0.00% | −10,929−100.0% | Sold out |
| Mascoma Wealth Management LLC | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −3,398−100.0% | Sold out |
| Dorsey Wright & Associates | 0 | $0 | 0.00% | −1,933−100.0% | Sold out |
| Webster Bank, N. A. | 0 | $0 | 0.00% | −1,527−100.0% | Sold out |
| AdvisorNet Financial, Inc | 0 | $0 | 0.00% | −20−100.0% | Sold out |