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 2023
Institutional positions in Acumen 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
- +2 vs. Q3 2023
- Shares held
- 38.4M
- −4.27M (−10.0%) vs. Q3 2023
- Total value
- $147.6M
- −$29.6M (−16.7%) vs. Q3 2023
- New holders
- 20
- 28 more added
- Sold out
- 18
- 9 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: 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 | $107.8M |
| Q2 2024 | 81 | $105.5M |
| Q1 2024 | 80 | $176.3M |
| Q4 2023 | 67 | $147.8M |
| Q3 2023 | 66 | $181.4M |
| Q2 2023 | 53 | $126.6M |
| Q1 2023 | 62 | $114.0M |
| Q4 2022 | 60 | $158.0M |
| Q3 2022 | 50 | $278.4M |
| 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 2023
Shares, value and share of portfolio for each institution holding Acumen Pharmaceuticals, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 14,932,063 | $57.3M | 0.90% | 00.0% | Unchanged |
| Sands Capital Ventures, LLC | 3,417,075 | $13.1M | 3.65% | 00.0% | Unchanged |
| Franklin Resources Inc | 3,358,809 | $12.9M | 0.01% | +520,044+18.3% | Added |
| Rock Springs Capital Management LP | 2,300,059 | $8.83M | 0.22% | −512,520−18.2% | Reduced |
| Laurion Capital Management LP | 1,895,023 | $7.28M | 0.26% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,839,552 | $7.06M | 0.00% | −17,000−0.9% | Reduced |
| Knollwood Investment Advisory, LLC | 1,628,510 | $6.25M | 1.30% | 00.0% | Unchanged |
| Millennium Management LLC | 1,495,284 | $5.74M | 0.01% | −221,006−12.9% | Reduced |
| Alyeska Investment Group, L.P. | 733,203 | $2.82M | 0.02% | +119,381+19.4% | Added |
| Jane Street Group, LLC | 604,620 | $2.32M | 0.00% | +587,832+3,501.5% | Added |
| Parkman Healthcare Partners LLC | 603,497 | $2.32M | 0.33% | +103,683+20.7% | Added |
| Hudson Bay Capital Management LP | 564,400 | $2.17M | 0.02% | +39,400+7.5% | Added |
| Schonfeld Strategic Advisors LLC | 561,542 | $2.16M | 0.02% | −83,570−13.0% | Reduced |
| Susquehanna International Group, LLP | 499,794 | $1.92M | 0.00% | +322,015+181.1% | Added |
| Pathstone Holdings, LLC | 479,149 | $1.84M | 0.01% | +479,149 | New |
| Ikarian Capital, LLC | 315,265 | $1.21M | 0.33% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 264,603 | $1.02M | 0.00% | 00.0% | Unchanged |
| BlackRock Inc. | 248,095 | $952.7K | 0.00% | −335,319−57.5% | Reduced |
| Tang Capital Management LLC | 246,895 | $948.1K | 0.09% | +246,895 | New |
| Two Sigma Investments, LP | 244,416 | $938.6K | 0.00% | +112,065+84.7% | Added |
| Citigroup Inc | 147,811 | $567.6K | 0.00% | +109,313+283.9% | Added |
| Man Group plc | 144,630 | $555.4K | 0.00% | +144,630 | New |
| D. E. Shaw & Co., Inc. | 138,029 | $530.0K | 0.00% | +138,029 | New |
| Citadel Advisors LLC | 131,116 | $503.5K | 0.00% | +130,884+56,415.5% | Added |
| Two Sigma Advisers, LP | 129,700 | $498.0K | 0.00% | +109,612+545.7% | Added |
| Goldman Sachs Group Inc | 114,732 | $440.6K | 0.00% | +57,433+100.2% | Added |
| Bank of America Corp | 104,369 | $400.8K | 0.00% | +87,894+533.5% | Added |
| Jump Financial, LLC | 103,000 | $395.5K | 0.01% | +69,100+203.8% | Added |
| Acadian Asset Management LLC | 91,496 | $350.0K | 0.00% | +91,496 | New |
| Catalyst Financial Partners LLC | 89,699 | $344.4K | 0.10% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 88,626 | $340.3K | 0.00% | +62,513+239.4% | Added |
| State Street Corp | 85,078 | $326.7K | 0.00% | +25,300+42.3% | Added |
| Boothbay Fund Management, LLC | 82,182 | $315.6K | 0.01% | +20,997+34.3% | Added |
| 683 Capital Management, LLC | 78,431 | $301.2K | 0.03% | +78,431 | New |
| Northern Trust Corp | 56,678 | $217.6K | 0.00% | +488+0.9% | Added |
| Dimensional Fund Advisors LP | 55,791 | $214.2K | 0.00% | −19,811−26.2% | Reduced |
| Squarepoint Ops LLC | 52,829 | $202.9K | 0.00% | +52,829 | New |
| Barclays PLC | 47,347 | $181.8K | 0.00% | +24,922+111.1% | Added |
| Caption Management, LLC | 40,000 | $153.6K | 0.02% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 33,945 | $130.3K | 0.00% | +22,920+207.9% | Added |
| Cubist Systematic Strategies, LLC | 33,905 | $130.2K | 0.00% | +33,905 | New |
| ExodusPoint Capital Management, LP | 32,256 | $124.0K | 0.00% | +32,256 | New |
| Intrepid Financial Planning Group LLC | 30,150 | $115.8K | 0.06% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 29,100 | $111.7K | 0.01% | +29,100 | New |
| Tower Research Capital LLC (TRC) | 29,089 | $111.7K | 0.00% | +26,961+1,267.0% | Added |
| American Century Companies Inc | 24,728 | $95.0K | 0.00% | +10,912+79.0% | Added |
| Virtu Financial LLC | 23,787 | $91.0K | 0.01% | +23,787 | New |
| Morgan Stanley | 23,126 | $88.8K | 0.00% | +887+4.0% | Added |
| Susquehanna Portfolio Strategies, LLC | 21,903 | $84.1K | 0.00% | +21,903 | New |
| Simplex Trading, LLC | 21,422 | $82.0K | 0.00% | +9,974+87.1% | Added |
| Balyasny Asset Management LLC | 20,578 | $79.0K | 0.00% | +20,578 | New |
| Y-Intercept (Hong Kong) Ltd | 19,348 | $74.3K | 0.01% | +19,348 | New |
| Occudo Quantitative Strategies LP | 16,929 | $65.0K | 0.01% | +16,929 | New |
| Stifel Financial Corp | 16,150 | $62.0K | 0.00% | +16,150 | New |
| Chicago Partners Investment Group LLC | 18,315 | $59.2K | 0.00% | +4,736+34.9% | Added |
| Integrated Wealth Concepts LLC | 14,600 | $56.1K | 0.00% | +1,000+7.4% | Added |
| Group One Trading, L.P. | 7,543 | $29.0K | 0.00% | +7,543 | New |
| Wells Fargo & Company | 2,205 | $8.47K | 0.00% | +2,011+1,036.6% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 2,000 | $7.68K | 0.00% | +2,000 | New |
| Global Retirement Partners, LLC | 2,000 | $7.26K | 0.00% | +2,000 | New |
| Cutler Group LP | 1,200 | $4.00K | 0.00% | −1,300−52.0% | Reduced |
| Advisory Services Network, LLC | 1,000 | $3.84K | 0.00% | +1,000 | New |
| Kelly Financial Services LLC | 944 | $3.63K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 668 | $2.00K | 0.00% | +566+554.9% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 413 | $1.59K | 0.00% | −2,980−87.8% | Reduced |
| Advisor Group Holdings, Inc. | 400 | $1.54K | 0.00% | +200+100.0% | Added |
| UBS Group AG | 8 | $31 | 0.00% | −92−92.0% | Reduced |
| Deep Track Capital, LP | 0 | $0 | 0.00% | −2,513,044−100.0% | Sold out |
| Boxer Capital, LLC | 0 | $0 | 0.00% | −2,206,983−100.0% | Sold out |
| Great Point Partners LLC | 0 | $0 | 0.00% | −1,074,101−100.0% | Sold out |
| Altium Capital Management LP | 0 | $0 | 0.00% | −650,000−100.0% | Sold out |
| Ghost Tree Capital, LLC | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −115,033−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −104,359−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −87,400−100.0% | Sold out |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −69,538−100.0% | Sold out |
| DekaBank Deutsche Girozentrale | 0 | $0 | 0.00% | −40,000−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −25,492−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −23,500−100.0% | Sold out |
| Pinnacle Associates Ltd | 0 | $0 | 0.00% | −18,020−100.0% | Sold out |
| Pinnacle Wealth Management Advisory Group, LLC | 0 | $0 | 0.00% | −18,020−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −16,538−100.0% | Sold out |
| China Universal Asset Management Co., Ltd. | 0 | $0 | 0.00% | −1,481−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −657−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −165−100.0% | Sold out |
| Pathstone Family Office, LLC | – | – | – | – | Not filed |