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 2023
Institutional positions in Merrimack Pharmaceuticals Inc as of Mar 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
- 50
- +3 vs. Q4 2022
- Shares held
- 7.40M
- −152.9K (−2.0%) vs. Q4 2022
- Total value
- $91.0M
- +$4.41M (+5.1%) vs. Q4 2022
- New holders
- 10
- 14 more added
- Sold out
- 7
- 9 more reduced
Compare with Q4 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, Q1 2023
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Royal Bank of Canada | 8 | $0 | 0.00% | 00.0% | Unchanged |
| 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 |
| Federated Hermes, Inc. | 90 | $1.11K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 160 | $2.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 170 | $2.09K | 0.00% | +2+1.2% | Added |
| FMR LLC | 170 | $2.09K | 0.00% | +170 | 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 |
| Baldwin Brothers Inc | 500 | $6.14K | 0.00% | 00.0% | Unchanged |
| Dark Forest Capital Management LP | 1,060 | $13.0K | 0.00% | +1,060 | New |
| Tower Research Capital LLC (TRC) | 1,235 | $15.0K | 0.00% | −2,007−61.9% | Reduced |
| GWM Advisors LLC | 1,406 | $17.3K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 1,493 | $18.3K | 0.00% | −186−11.1% | Reduced |
| Webster Bank, N. A. | 1,527 | $18.8K | 0.00% | 00.0% | Unchanged |
| Dorsey Wright & Associates | 1,799 | $22.1K | 0.01% | +1,799 | New |
| UBS Group AG | 3,128 | $38.4K | 0.00% | +2,353+303.6% | Added |
| Lazard Asset Management LLC | 4,951 | $60.0K | 0.00% | +4,951 | New |
| Mascoma Wealth Management LLC | 5,000 | $62.0K | 0.02% | 00.0% | Unchanged |
| Barclays PLC | 5,438 | $66.8K | 0.00% | +5,303+3,928.1% | Added |
| Citadel Advisors LLC | 8,491 | $104.4K | 0.00% | +8,491 | New |
| Belvedere Trading LLC | 10,888 | $133.8K | 0.06% | −28,102−72.1% | Reduced |
| Kennedy Capital Management, Inc. | 13,758 | $169.1K | 0.00% | +13,758 | New |
| Brown Advisory Inc | 15,029 | $184.7K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 27,948 | $343.5K | 0.00% | +2,126+8.2% | Added |
| Bridgeway Capital Management, LLC | 34,200 | $420.3K | 0.01% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 34,898 | $428.9K | 0.00% | +20,756+146.8% | Added |
| Jane Street Group, LLC | 37,307 | $458.5K | 0.00% | +37,307 | New |
| Millennium Management LLC | 40,204 | $494.0K | 0.00% | +23,219+136.7% | Added |
| State Street Corp | 50,556 | $621.3K | 0.00% | +1,700+3.5% | Added |
| Morgan Stanley | 54,160 | $665.6K | 0.00% | +44,997+491.1% | Added |
| Yakira Capital Management, Inc. | 72,118 | $886.3K | 0.23% | −13,614−15.9% | Reduced |
| Bank of New York Mellon Corp | 74,880 | $920.3K | 0.00% | 00.0% | Unchanged |
| Marshall Wace, LLP | 98,255 | $1.21M | 0.00% | +98,255 | New |
| Boothbay Fund Management, LLC | 117,436 | $1.44M | 0.04% | +53,225+82.9% | Added |
| Geode Capital Management, LLC | 130,164 | $1.60M | 0.00% | −4,062−3.0% | Reduced |
| Susquehanna International Group, LLP | 138,995 | $1.71M | 0.00% | −116,341−45.6% | Reduced |
| Nantahala Capital Management, LLC | 191,266 | $2.35M | 0.23% | −18,734−8.9% | Reduced |
| Wittenberg Investment Management, Inc. | 197,994 | $2.43M | 0.91% | +6,800+3.6% | Added |
| Invesco Ltd. | 210,507 | $2.59M | 0.00% | +210,507 | New |
| BlackRock Inc. | 222,253 | $2.73M | 0.00% | +12,495+6.0% | Added |
| Sio Capital Management, LLC | 272,843 | $3.35M | 1.66% | +22,843+9.1% | Added |
| Sepio Capital, LP | 294,545 | $3.62M | 0.33% | 00.0% | Unchanged |
| Vanguard Group Inc | 458,521 | $5.64M | 0.00% | −129,500−22.0% | Reduced |
| Dimensional Fund Advisors LP | 466,140 | $5.73M | 0.00% | −5,233−1.1% | Reduced |
| Madison Avenue Partners, LP | 553,085 | $6.80M | 1.46% | +553,085 | New |
| Western Standard LLC | 1,672,463 | $20.6M | 20.85% | +142,969+9.3% | Added |
| Newtyn Management, LLC | 1,873,694 | $23.0M | 4.52% | +105,300+6.0% | Added |
| 22NW, LP | 0 | $0 | 0.00% | −1,015,048−100.0% | Sold out |
| OrbiMed Advisors LLC | 0 | $0 | 0.00% | −73,600−100.0% | Sold out |
| Pura Vida Investments, LLC | 0 | $0 | 0.00% | −64,100−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −42,490−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −11,181−100.0% | Sold out |
| Freedom Wealth Alliance, LLC | 0 | $0 | 0.00% | −1,820−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −354−100.0% | Sold out |