Acumen Pharmaceuticals, Inc.
ABOS- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001576885
No open-market purchases or sales by Acumen Pharmaceuticals, Inc. insiders were filed in the last 90 days; 96 institutions reported holding it in 13F filings for Q2 2026, worth $127.8M in total; no superinvestor holds it.
13F holders, Q4 2021
Institutional positions in Acumen Pharmaceuticals, Inc. as of Dec 31, 2021. 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
- 52
- +12 vs. Q3 2021
- Shares held
- 25.6M
- +1.69M (+7.1%) vs. Q3 2021
- Total value
- $172.9M
- −$182.1M (−51.3%) vs. Q3 2021
- New holders
- 13
- 23 more added
- Sold out
- 1
- 6 more reduced
1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ABOS 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 | 96 | $127.8M |
| Q1 2026 | 84 | $108.5M |
| Q4 2025 | 71 | $75.2M |
| Q3 2025 | 69 | $61.1M |
| Q2 2025 | 71 | $43.6M |
| Q1 2025 | 81 | $44.8M |
| Q4 2024 | 80 | $73.2M |
| Q3 2024 | 73 | $107.7M |
| Q2 2024 | 81 | $105.5M |
| Q1 2024 | 80 | $175.6M |
| Q4 2023 | 67 | $147.6M |
| Q3 2023 | 66 | $179.2M |
| Q2 2023 | 53 | $126.6M |
| Q1 2023 | 62 | $112.8M |
| Q4 2022 | 60 | $155.1M |
| Q3 2022 | 50 | $275.9M |
| Q2 2022 | 47 | $120.5M |
| Q1 2022 | 57 | $106.1M |
| Q4 2021 | 52 | $172.9M |
| Q3 2021 | 41 | $357.4M |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2021
Shares, value and share of portfolio for each institution holding Acumen Pharmaceuticals, Inc.; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FinTrust Capital Advisors, LLC | 20 | $0 | 0.00% | +20 | New |
| Bedel Financial Consulting, Inc. | 240 | $2.00K | 0.00% | +240 | New |
| Ameritas Investment Partners, Inc. | 735 | $5.00K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 888 | $6.00K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 857 | $6.00K | 0.00% | +247+40.5% | Added |
| Wells Fargo & Company | 2,075 | $14.0K | 0.00% | +2,024+3,968.6% | Added |
| Royal Bank of Canada | 2,370 | $16.0K | 0.00% | +1,269+115.3% | Added |
| Citigroup Inc | 3,891 | $26.0K | 0.00% | +2,797+255.7% | Added |
| American International Group, Inc. | 5,335 | $36.0K | 0.00% | +88+1.7% | Added |
| New York State Common Retirement Fund | 5,481 | $37.0K | 0.00% | +5,481 | New |
| California State Teachers Retirement System | 5,659 | $38.0K | 0.00% | +479+9.2% | Added |
| Deutsche Bank AG | 5,824 | $39.0K | 0.00% | +306+5.5% | Added |
| Tower Research Capital LLC (TRC) | 6,523 | $44.0K | 0.00% | +5,828+838.6% | Added |
| JPMorgan Chase & Co | 7,240 | $49.0K | 0.00% | +3,568+97.2% | Added |
| Cubist Systematic Strategies, LLC | 11,545 | $78.0K | 0.00% | +11,545 | New |
| Nuveen Asset Management, LLC | 12,922 | $81.0K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 13,300 | $90.0K | 0.00% | −93,800−87.6% | Reduced |
| Chicago Partners Investment Group LLC | 17,960 | $92.0K | 0.01% | +3,156+21.3% | Added |
| Squarepoint Ops LLC | 18,818 | $127.0K | 0.00% | +18,818 | New |
| Bank of New York Mellon Corp | 19,180 | $129.0K | 0.00% | +1,235+6.9% | Added |
| Jump Financial, LLC | 20,097 | $136.0K | 0.01% | +20,097 | New |
| Morgan Stanley | 20,633 | $139.0K | 0.00% | +20,064+3,526.2% | Added |
| Bank of America Corp | 21,095 | $143.0K | 0.00% | +20,105+2,030.8% | Added |
| Renaissance Technologies LLC | 21,609 | $146.0K | 0.00% | +21,609 | New |
| Charles Schwab Investment Management Inc | 24,037 | $163.0K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 27,167 | $184.0K | 0.00% | +8,853+48.3% | Added |
| STRS Ohio | 33,300 | $225.0K | 0.00% | +31,100+1,413.6% | Added |
| Millennium Management LLC | 37,163 | $251.0K | 0.00% | +37,163 | New |
| Rex Capital Advisors, LLC | 65,336 | $442.0K | 0.23% | +65,336 | New |
| Citadel Advisors LLC | 74,523 | $504.0K | 0.00% | +35,177+89.4% | Added |
| Ergoteles LLC | 77,152 | $522.0K | 0.02% | +77,152 | New |
| HRT Financial LP | 81,917 | $553.0K | 0.00% | +81,917 | New |
| Schonfeld Strategic Advisors LLC | 86,543 | $585.0K | 0.01% | +86,543 | New |
| Northern Trust Corp | 94,984 | $642.0K | 0.00% | +7,583+8.7% | Added |
| State Street Corp | 111,363 | $753.0K | 0.00% | +11,588+11.6% | Added |
| Pura Vida Investments, LLC | 126,060 | $852.0K | 0.09% | +51,060+68.1% | Added |
| Marshall Wace, LLP | 156,250 | $1.06M | 0.00% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 171,879 | $1.16M | 0.00% | +64,073+59.4% | Added |
| BVF Inc | 289,663 | $1.96M | 0.07% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 323,264 | $2.19M | 0.00% | +259,629+408.0% | Added |
| Moore Capital Management, LP | 358,482 | $2.42M | 0.06% | −11,101−3.0% | Reduced |
| Woodline Partners LP | 480,681 | $3.25M | 0.05% | +11,887+2.5% | Added |
| Guardian Point Capital, LP | 500,000 | $3.38M | 0.78% | 00.0% | Unchanged |
| Vanguard Group Inc | 554,973 | $3.75M | 0.00% | −769,925−58.1% | Reduced |
| Franklin Resources Inc | 602,266 | $4.07M | 0.00% | −335,234−35.8% | Reduced |
| Janus Henderson Group PLC | 627,263 | $4.24M | 0.00% | −232,918−27.1% | Reduced |
| Laurion Capital Management LP | 656,848 | $4.44M | 0.08% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 1,571,918 | $10.6M | 0.25% | −7,273−0.5% | Reduced |
| Deep Track Capital, LP | 1,933,040 | $13.1M | 0.97% | +1,933,040 | New |
| BlackRock Inc. | 3,109,670 | $21.0M | 0.00% | +240,879+8.4% | Added |
| Sands Capital Ventures, LLC | 3,417,075 | $23.1M | 3.42% | 00.0% | Unchanged |
| Ra Capital Management, L.P. | 9,770,773 | $66.0M | 1.16% | 00.0% | Unchanged |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −78−100.0% | Sold out |
| Marshall Wace North America L.P. | – | – | – | – | Not filed |