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 2022
Institutional positions in Merrimack Pharmaceuticals Inc as of Dec 31, 2022. 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
- 47
- +6 vs. Q3 2022
- Shares held
- 7.55M
- −457.2K (−5.7%) vs. Q3 2022
- Total value
- $86.6M
- +$56.5M (+188.1%) vs. Q3 2022
- New holders
- 12
- 14 more added
- Sold out
- 6
- 11 more reduced
Compare with Q3 2022: 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 2022
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q3 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Newtyn Management, LLC | 1,768,394 | $20.3M | 4.18% | +1,300+0.1% | Added |
| Western Standard LLC | 1,529,494 | $17.5M | 15.43% | +357,031+30.5% | Added |
| 22NW, LP | 1,015,048 | $11.6M | 6.28% | −215,966−17.5% | Reduced |
| Vanguard Group Inc | 588,021 | $6.74M | 0.00% | −19,783−3.3% | Reduced |
| Dimensional Fund Advisors LP | 471,373 | $5.40M | 0.00% | −928−0.2% | Reduced |
| Sepio Capital, LP | 294,545 | $3.38M | 0.29% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 255,336 | $2.93M | 0.01% | +213,718+513.5% | Added |
| Sio Capital Management, LLC | 250,000 | $2.87M | 1.53% | +250,000 | New |
| Nantahala Capital Management, LLC | 210,000 | $2.41M | 0.22% | −219,596−51.1% | Reduced |
| BlackRock Inc. | 209,758 | $2.40M | 0.00% | +2,975+1.4% | Added |
| Wittenberg Investment Management, Inc. | 191,194 | $2.19M | 0.89% | +2,500+1.3% | Added |
| Geode Capital Management, LLC | 134,226 | $1.54M | 0.00% | +33,418+33.2% | Added |
| Yakira Capital Management, Inc. | 85,732 | $982.5K | 0.20% | −30,089−26.0% | Reduced |
| Bank of New York Mellon Corp | 74,880 | $858.1K | 0.00% | +33,929+82.9% | Added |
| OrbiMed Advisors LLC | 73,600 | $843.5K | 0.02% | +73,600 | New |
| Boothbay Fund Management, LLC | 64,211 | $735.9K | 0.02% | +64,211 | New |
| Pura Vida Investments, LLC | 64,100 | $734.6K | 0.12% | +64,100 | New |
| State Street Corp | 48,856 | $559.9K | 0.00% | +2,300+4.9% | Added |
| Two Sigma Investments, LP | 42,490 | $486.9K | 0.00% | +20,971+97.5% | Added |
| Belvedere Trading LLC | 38,990 | $446.8K | 0.25% | +18,938+94.4% | Added |
| Bridgeway Capital Management, LLC | 34,200 | $391.9K | 0.01% | 00.0% | Unchanged |
| Northern Trust Corp | 25,822 | $295.9K | 0.00% | +1,842+7.7% | Added |
| Millennium Management LLC | 16,985 | $195.0K | 0.00% | +16,985 | New |
| Brown Advisory Inc | 15,029 | $172.2K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 14,142 | $162.1K | 0.00% | +14,142 | New |
| Two Sigma Advisers, LP | 11,181 | $128.1K | 0.00% | −7,500−40.1% | Reduced |
| Morgan Stanley | 9,163 | $105.0K | 0.00% | +2,649+40.7% | Added |
| Mascoma Wealth Management LLC | 5,000 | $57.3K | 0.02% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,242 | $37.0K | 0.00% | +3,057+1,652.4% | Added |
| Freedom Wealth Alliance, LLC | 1,820 | $20.9K | 0.03% | +1,820 | New |
| Bank of America Corp | 1,679 | $19.2K | 0.00% | +143+9.3% | Added |
| Webster Bank, N. A. | 1,527 | $17.0K | 0.00% | −1,528−50.0% | Reduced |
| UBS Group AG | 775 | $8.88K | 0.00% | −4,421−85.1% | Reduced |
| Baldwin Brothers Inc | 500 | $5.73K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 354 | $4.00K | 0.00% | +354 | New |
| Kayne Anderson Rudnick Investment Management LLC | 300 | $3.44K | 0.00% | 00.0% | Unchanged |
| Sandy Spring Bank | 300 | $3.44K | 0.00% | 00.0% | Unchanged |
| Rise Advisors, LLC | 272 | $3.11K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 160 | $2.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 168 | $1.93K | 0.00% | −71−29.7% | Reduced |
| Barclays PLC | 135 | $1.55K | 0.00% | +135 | New |
| Federated Hermes, Inc. | 90 | $1.03K | 0.00% | −1−1.1% | Reduced |
| Horrell Capital Management, Inc. | 50 | $1.00K | 0.00% | +50 | New |
| Armstrong Advisory Group, Inc | 45 | $516 | 0.00% | +45 | New |
| AdvisorNet Financial, Inc | 20 | $229 | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 1,406 | $16 | 0.00% | +1,406 | New |
| Royal Bank of Canada | 8 | $0 | 0.00% | −3,531−99.8% | Reduced |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −1,100,994−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −13,718−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −11,930−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −8,692−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| City State Bank | 0 | $0 | 0.00% | −25−100.0% | Sold out |