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 | $107.7M |
| 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 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 |
|---|---|---|---|---|---|
| UBS Group AG | 8 | $31 | 0.00% | −92−92.0% | Reduced |
| Advisor Group Holdings, Inc. | 400 | $1.54K | 0.00% | +200+100.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 413 | $1.59K | 0.00% | −2,980−87.8% | Reduced |
| Royal Bank of Canada | 668 | $2.00K | 0.00% | +566+554.9% | Added |
| Kelly Financial Services LLC | 944 | $3.63K | 0.00% | 00.0% | Unchanged |
| Advisory Services Network, LLC | 1,000 | $3.84K | 0.00% | +1,000 | New |
| Cutler Group LP | 1,200 | $4.00K | 0.00% | −1,300−52.0% | Reduced |
| Global Retirement Partners, LLC | 2,000 | $7.26K | 0.00% | +2,000 | New |
| Point72 Asia (Singapore) Pte. Ltd. | 2,000 | $7.68K | 0.00% | +2,000 | New |
| Wells Fargo & Company | 2,205 | $8.47K | 0.00% | +2,011+1,036.6% | Added |
| Group One Trading, L.P. | 7,543 | $29.0K | 0.00% | +7,543 | New |
| Integrated Wealth Concepts LLC | 14,600 | $56.1K | 0.00% | +1,000+7.4% | Added |
| Chicago Partners Investment Group LLC | 18,315 | $59.2K | 0.00% | +4,736+34.9% | Added |
| Stifel Financial Corp | 16,150 | $62.0K | 0.00% | +16,150 | New |
| Occudo Quantitative Strategies LP | 16,929 | $65.0K | 0.01% | +16,929 | New |
| Y-Intercept (Hong Kong) Ltd | 19,348 | $74.3K | 0.01% | +19,348 | New |
| Balyasny Asset Management LLC | 20,578 | $79.0K | 0.00% | +20,578 | New |
| Simplex Trading, LLC | 21,422 | $82.0K | 0.00% | +9,974+87.1% | Added |
| Susquehanna Portfolio Strategies, LLC | 21,903 | $84.1K | 0.00% | +21,903 | New |
| Morgan Stanley | 23,126 | $88.8K | 0.00% | +887+4.0% | Added |
| Virtu Financial LLC | 23,787 | $91.0K | 0.01% | +23,787 | New |
| American Century Companies Inc | 24,728 | $95.0K | 0.00% | +10,912+79.0% | Added |
| Tower Research Capital LLC (TRC) | 29,089 | $111.7K | 0.00% | +26,961+1,267.0% | Added |
| Prelude Capital Management, LLC | 29,100 | $111.7K | 0.01% | +29,100 | New |
| Intrepid Financial Planning Group LLC | 30,150 | $115.8K | 0.06% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 32,256 | $124.0K | 0.00% | +32,256 | New |
| Cubist Systematic Strategies, LLC | 33,905 | $130.2K | 0.00% | +33,905 | New |
| JPMorgan Chase & Co | 33,945 | $130.3K | 0.00% | +22,920+207.9% | Added |
| Caption Management, LLC | 40,000 | $153.6K | 0.02% | 00.0% | Unchanged |
| Barclays PLC | 47,347 | $181.8K | 0.00% | +24,922+111.1% | Added |
| Squarepoint Ops LLC | 52,829 | $202.9K | 0.00% | +52,829 | New |
| Dimensional Fund Advisors LP | 55,791 | $214.2K | 0.00% | −19,811−26.2% | Reduced |
| Northern Trust Corp | 56,678 | $217.6K | 0.00% | +488+0.9% | Added |
| 683 Capital Management, LLC | 78,431 | $301.2K | 0.03% | +78,431 | New |
| Boothbay Fund Management, LLC | 82,182 | $315.6K | 0.01% | +20,997+34.3% | Added |
| State Street Corp | 85,078 | $326.7K | 0.00% | +25,300+42.3% | Added |
| Qube Research & Technologies Ltd | 88,626 | $340.3K | 0.00% | +62,513+239.4% | Added |
| Catalyst Financial Partners LLC | 89,699 | $344.4K | 0.10% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 91,496 | $350.0K | 0.00% | +91,496 | New |
| Jump Financial, LLC | 103,000 | $395.5K | 0.01% | +69,100+203.8% | Added |
| Bank of America Corp | 104,369 | $400.8K | 0.00% | +87,894+533.5% | Added |
| Goldman Sachs Group Inc | 114,732 | $440.6K | 0.00% | +57,433+100.2% | Added |
| Two Sigma Advisers, LP | 129,700 | $498.0K | 0.00% | +109,612+545.7% | Added |
| Citadel Advisors LLC | 131,116 | $503.5K | 0.00% | +130,884+56,415.5% | Added |
| D. E. Shaw & Co., Inc. | 138,029 | $530.0K | 0.00% | +138,029 | New |
| Man Group plc | 144,630 | $555.4K | 0.00% | +144,630 | New |
| Citigroup Inc | 147,811 | $567.6K | 0.00% | +109,313+283.9% | Added |
| Two Sigma Investments, LP | 244,416 | $938.6K | 0.00% | +112,065+84.7% | Added |
| Tang Capital Management LLC | 246,895 | $948.1K | 0.09% | +246,895 | New |
| BlackRock Inc. | 248,095 | $952.7K | 0.00% | −335,319−57.5% | Reduced |
| Geode Capital Management, LLC | 264,603 | $1.02M | 0.00% | 00.0% | Unchanged |
| Ikarian Capital, LLC | 315,265 | $1.21M | 0.33% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 479,149 | $1.84M | 0.01% | +479,149 | New |
| Susquehanna International Group, LLP | 499,794 | $1.92M | 0.00% | +322,015+181.1% | Added |
| Schonfeld Strategic Advisors LLC | 561,542 | $2.16M | 0.02% | −83,570−13.0% | Reduced |
| Hudson Bay Capital Management LP | 564,400 | $2.17M | 0.02% | +39,400+7.5% | Added |
| Parkman Healthcare Partners LLC | 603,497 | $2.32M | 0.33% | +103,683+20.7% | Added |
| Jane Street Group, LLC | 604,620 | $2.32M | 0.00% | +587,832+3,501.5% | Added |
| Alyeska Investment Group, L.P. | 733,203 | $2.82M | 0.02% | +119,381+19.4% | Added |
| Millennium Management LLC | 1,495,284 | $5.74M | 0.01% | −221,006−12.9% | Reduced |
| Knollwood Investment Advisory, LLC | 1,628,510 | $6.25M | 1.30% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,839,552 | $7.06M | 0.00% | −17,000−0.9% | Reduced |
| Laurion Capital Management LP | 1,895,023 | $7.28M | 0.26% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 2,300,059 | $8.83M | 0.22% | −512,520−18.2% | Reduced |
| Franklin Resources Inc | 3,358,809 | $12.9M | 0.01% | +520,044+18.3% | Added |
| Sands Capital Ventures, LLC | 3,417,075 | $13.1M | 3.65% | 00.0% | Unchanged |
| Ra Capital Management, L.P. | 14,932,063 | $57.3M | 0.90% | 00.0% | Unchanged |
| 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 |