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, Q3 2025
Institutional positions in Acumen Pharmaceuticals, Inc. as of Sep 30, 2025. 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
- 69
- −2 vs. Q2 2025
- Shares held
- 35.7M
- −1.88M (−5.0%) vs. Q2 2025
- Total value
- $61.1M
- +$17.5M (+40.0%) vs. Q2 2025
- New holders
- 13
- 9 more added
- Sold out
- 15
- 27 more reduced
Compare with Q2 2025: 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, Q3 2025
Shares, value and share of portfolio for each institution holding Acumen Pharmaceuticals, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Optiver Holding B.V. | 6 | $10 | 0.00% | +6 | New |
| SRS Capital Advisors, Inc. | 26 | $44 | 0.00% | +26 | New |
| Citigroup Inc | 151 | $258 | 0.00% | −2,964−95.2% | Reduced |
| NBT Bank N A | 2 | $342 | 0.00% | −198−99.0% | Reduced |
| Farther Finance Advisors, LLC | 200 | $342 | 0.00% | 00.0% | Unchanged |
| Bell Investment Advisors, Inc | 362 | $620 | 0.00% | +362 | New |
| EverSource Wealth Advisors, LLC | 407 | $696 | 0.00% | −8−1.9% | Reduced |
| SBI Securities Co., Ltd. | 518 | $886 | 0.00% | +5+1.0% | Added |
| CWM, LLC | 744 | $1.00K | 0.00% | −3,392−82.0% | Reduced |
| Advisory Services Network, LLC | 1,111 | $1.90K | 0.00% | +1,111 | New |
| Royal Bank of Canada | 1,120 | $2.00K | 0.00% | +151+15.6% | Added |
| BNP Paribas Arbitrage, SA | 1,224 | $2.09K | 0.00% | −810−39.8% | Reduced |
| Nisa Investment Advisors, LLC | 1,229 | $2.10K | 0.00% | 00.0% | Unchanged |
| TFC Financial Management | 2,500 | $4.28K | 0.00% | +2,500 | New |
| Rockefeller Capital Management L.P. | 3,000 | $5.13K | 0.00% | +3,000 | New |
| The PNC Financial Services Group, Inc. | 3,080 | $5.27K | 0.00% | −1,868−37.8% | Reduced |
| JPMorgan Chase & Co | 3,032 | $5.31K | 0.00% | −13,643−81.8% | Reduced |
| Larson Financial Group LLC | 4,000 | $6.84K | 0.00% | +4,000 | New |
| Advisor Group Holdings, Inc. | 7,251 | $10.4K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 6,500 | $11.1K | 0.00% | −325−4.8% | Reduced |
| Group One Trading, L.P. | 7,798 | $13.3K | 0.00% | −726−8.5% | Reduced |
| Integrated Wealth Concepts LLC | 10,179 | $17.4K | 0.00% | −247−2.4% | Reduced |
| Savant Capital, LLC | 11,045 | $18.9K | 0.00% | 00.0% | Unchanged |
| PFG Investments, LLC | 11,500 | $19.7K | 0.00% | +11,500 | New |
| HRT Financial LP | 14,014 | $23.0K | 0.00% | −17,413−55.4% | Reduced |
| Jacobs Levy Equity Management, Inc | 16,001 | $27.4K | 0.00% | +16,001 | New |
| Point72 Asia (Singapore) Pte. Ltd. | 16,044 | $27.4K | 0.00% | −5,296−24.8% | Reduced |
| Clune & Associates, Ltd. | 16,500 | $28.2K | 0.01% | 00.0% | Unchanged |
| Pinnacle Associates Ltd | 18,020 | $30.8K | 0.00% | 00.0% | Unchanged |
| Pinnacle Wealth Management Advisory Group, LLC | 18,020 | $30.8K | 0.00% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 23,904 | $40.9K | 0.00% | +23,904 | New |
| Catalyst Funds Management Pty Ltd | 29,600 | $50.6K | 0.01% | +9,900+50.3% | Added |
| Barclays PLC | 29,991 | $51.3K | 0.00% | 00.0% | Unchanged |
| Intrepid Financial Planning Group LLC | 30,150 | $51.6K | 0.02% | 00.0% | Unchanged |
| UBS Group AG | 30,841 | $52.7K | 0.00% | −63,581−67.3% | Reduced |
| Gsa Capital Partners LLP | 32,103 | $55.0K | 0.00% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 32,881 | $56.2K | 0.00% | −24,678−42.9% | Reduced |
| Dimensional Fund Advisors LP | 43,524 | $74.4K | 0.00% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 51,042 | $87.3K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 64,954 | $111.1K | 0.00% | −208−0.3% | Reduced |
| Acadian Asset Management LLC | 77,920 | $131.0K | 0.00% | +77,920 | New |
| Catalyst Financial Partners LLC | 89,699 | $153.4K | 0.02% | 00.0% | Unchanged |
| State Street Corp | 106,678 | $182.4K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 147,148 | $251.6K | 0.00% | −187,535−56.0% | Reduced |
| Morgan Stanley | 149,401 | $255.5K | 0.00% | −4,347−2.8% | Reduced |
| BlackRock, Inc. | 174,690 | $298.7K | 0.00% | −117,267−40.2% | Reduced |
| Bridgeway Capital Management, LLC | 190,171 | $325.2K | 0.01% | +75,000+65.1% | Added |
| Two Sigma Investments, LP | 199,446 | $341.1K | 0.00% | −1,339−0.7% | Reduced |
| Jane Street Group, LLC | 207,239 | $354.4K | 0.00% | +31,569+18.0% | Added |
| Bank of America Corp | 213,729 | $365.5K | 0.00% | +66,720+45.4% | Added |
| Susquehanna International Group, LLP | 214,440 | $366.7K | 0.00% | +62,102+40.8% | Added |
| Ikarian Capital, LLC | 265,769 | $454.5K | 0.10% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 398,778 | $682.0K | 0.00% | +2,152+0.5% | Added |
| SG Americas Securities, LLC | 403,878 | $691.0K | 0.00% | +403,878 | New |
| Two Sigma Advisers, LP | 423,600 | $724.4K | 0.00% | −2,700−0.6% | Reduced |
| Citadel Advisors LLC | 494,108 | $844.9K | 0.00% | +494,108 | New |
| Renaissance Technologies LLC | 584,292 | $999.1K | 0.00% | +337,704+137.0% | Added |
| Millennium Management LLC | 601,716 | $1.03M | 0.00% | −1,348,404−69.1% | Reduced |
| Hudson Bay Capital Management LP | 725,004 | $1.24M | 0.01% | −100,000−12.1% | Reduced |
| Pathstone Holdings, LLC | 859,110 | $1.47M | 0.01% | −199,421−18.8% | Reduced |
| Laurion Capital Management LP | 867,046 | $1.48M | 0.20% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 891,183 | $1.52M | 0.15% | −25,000−2.7% | Reduced |
| Alyeska Investment Group, L.P. | 939,603 | $1.61M | 0.00% | 00.0% | Unchanged |
| Knollwood Investment Advisory, LLC | 1,628,510 | $2.78M | 0.25% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,651,472 | $2.82M | 0.00% | −37,879−2.2% | Reduced |
| FMR LLC | 2,029,325 | $3.47M | 0.00% | −4110.0% | Reduced |
| Franklin Resources Inc | 2,305,096 | $3.94M | 0.00% | −771,943−25.1% | Reduced |
| Sands Capital Ventures, LLC | 3,417,075 | $5.84M | 1.28% | 00.0% | Unchanged |
| Ra Capital Management, L.P. | 14,932,063 | $25.5M | 0.31% | 00.0% | Unchanged |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −250,848−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −137,943−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −46,292−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −39,990−100.0% | Sold out |
| Marex Group plc | 0 | $0 | 0.00% | −33,300−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −20,066−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −15,929−100.0% | Sold out |
| DRW Securities, LLC | 0 | $0 | 0.00% | −11,018−100.0% | Sold out |
| Ethic Inc. | 0 | $0 | 0.00% | −11,377−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −3,631−100.0% | Sold out |
| Federation des caisses Desjardins du Quebec | 0 | $0 | 0.00% | −1,500−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −619−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −495−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −63−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −35−100.0% | Sold out |