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, Q1 2025
Institutional positions in Acumen Pharmaceuticals, Inc. as of Mar 31, 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
- 81
- +2 vs. Q4 2024
- Shares held
- 40.3M
- −2.19M (−5.1%) vs. Q4 2024
- Total value
- $44.8M
- −$28.2M (−38.6%) vs. Q4 2024
- New holders
- 11
- 15 more added
- Sold out
- 9
- 33 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Acumen Pharmaceuticals, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 14,932,063 | $16.4M | 0.27% | 00.0% | Unchanged |
| Sands Capital Ventures, LLC | 3,417,075 | $3.76M | 0.92% | 00.0% | Unchanged |
| Franklin Resources Inc | 3,141,939 | $3.46M | 0.00% | −131,694−4.0% | Reduced |
| BlackRock, Inc. | 2,331,049 | $2.56M | 0.00% | −40,998−1.7% | Reduced |
| FMR LLC | 2,025,623 | $2.23M | 0.00% | +1,863+0.1% | Added |
| Vanguard Group Inc | 1,936,991 | $2.13M | 0.00% | −3,780−0.2% | Reduced |
| Knollwood Investment Advisory, LLC | 1,628,510 | $1.79M | 0.20% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 832,267 | $1.46M | 0.00% | −105,641−11.3% | Reduced |
| Millennium Management LLC | 1,135,222 | $1.25M | 0.00% | −209,523−15.6% | Reduced |
| Pathstone Holdings, LLC | 1,086,531 | $1.20M | 0.01% | +479,686+79.0% | Added |
| Alyeska Investment Group, L.P. | 939,603 | $1.03M | 0.00% | 00.0% | Unchanged |
| Laurion Capital Management LP | 867,046 | $953.8K | 0.07% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 861,899 | $948.2K | 0.00% | −8,656−1.0% | Reduced |
| Hudson Bay Capital Management LP | 770,000 | $847.0K | 0.01% | +55,000+7.7% | Added |
| State Street Corp | 521,206 | $573.3K | 0.00% | −4,600−0.9% | Reduced |
| Two Sigma Advisers, LP | 463,700 | $510.1K | 0.00% | −35,400−7.1% | Reduced |
| Northern Trust Corp | 289,836 | $318.8K | 0.00% | −17,779−5.8% | Reduced |
| Ikarian Capital, LLC | 265,769 | $292.3K | 0.10% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 256,700 | $282.4K | 0.00% | −513−0.2% | Reduced |
| Two Sigma Investments, LP | 232,293 | $255.5K | 0.00% | −68,975−22.9% | Reduced |
| Goldman Sachs Group Inc | 196,207 | $215.8K | 0.00% | −22,937−10.5% | Reduced |
| Bank of America Corp | 158,934 | $174.8K | 0.00% | +10,266+6.9% | Added |
| Morgan Stanley | 152,636 | $167.9K | 0.00% | −113,580−42.7% | Reduced |
| ADAR1 Capital Management, LLC | 146,183 | $160.8K | 0.03% | +51,889+55.0% | Added |
| Invesco Ltd. | 127,798 | $140.6K | 0.00% | +107,956+544.1% | Added |
| UBS Group AG | 123,015 | $135.3K | 0.00% | −18,477−13.1% | Reduced |
| Charles Schwab Investment Management Inc | 116,902 | $128.6K | 0.00% | −9,845−7.8% | Reduced |
| Bridgeway Capital Management, LLC | 115,171 | $126.7K | 0.00% | −18,829−14.1% | Reduced |
| Susquehanna International Group, LLP | 110,976 | $122.1K | 0.00% | +35,088+46.2% | Added |
| Deutsche Bank AG | 96,995 | $106.7K | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 90,258 | $99.3K | 0.00% | −2,725−2.9% | Reduced |
| Catalyst Financial Partners LLC | 89,699 | $98.7K | 0.02% | 00.0% | Unchanged |
| Nuveen, LLC | 78,446 | $86.3K | 0.00% | +78,446 | New |
| Barclays PLC | 72,265 | $79.5K | 0.00% | −20,817−22.4% | Reduced |
| Boothbay Fund Management, LLC | 51,042 | $56.1K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 45,516 | $50.1K | 0.00% | −7,560−14.2% | Reduced |
| Dimensional Fund Advisors LP | 43,524 | $47.9K | 0.00% | −54,492−55.6% | Reduced |
| AQR Capital Management LLC | 41,735 | $45.9K | 0.00% | +41,735 | New |
| Marex Group plc | 33,300 | $36.6K | 0.00% | 00.0% | Unchanged |
| Intrepid Financial Planning Group LLC | 30,150 | $33.2K | 0.02% | 00.0% | Unchanged |
| Citigroup Inc | 29,836 | $32.8K | 0.00% | −50,509−62.9% | Reduced |
| Intech Investment Management LLC | 28,540 | $31.4K | 0.00% | +9,693+51.4% | Added |
| Wells Fargo & Company | 27,678 | $30.4K | 0.00% | +1,559+6.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 25,171 | $27.7K | 0.00% | +1,092+4.5% | Added |
| Qube Research & Technologies Ltd | 22,135 | $24.3K | 0.00% | −46,186−67.6% | Reduced |
| JustInvest LLC | 22,006 | $24.2K | 0.00% | +9,112+70.7% | Added |
| SEI Investments Co | 21,782 | $24.0K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 20,550 | $22.6K | 0.00% | −305−1.5% | Reduced |
| SG Americas Securities, LLC | 18,007 | $20.0K | 0.00% | −7,624−29.7% | Reduced |
| Pinnacle Associates Ltd | 18,020 | $19.8K | 0.00% | 00.0% | Unchanged |
| Pinnacle Wealth Management Advisory Group, LLC | 18,020 | $19.8K | 0.00% | 00.0% | Unchanged |
| Clune & Associates, Ltd. | 16,500 | $18.1K | 0.01% | 00.0% | Unchanged |
| Thoroughbred Financial Services, LLC | 15,500 | $17.0K | 0.00% | +15,500 | New |
| Integrated Wealth Concepts LLC | 15,219 | $16.7K | 0.00% | +5,119+50.7% | Added |
| Price T Rowe Associates Inc | 13,616 | $15.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 11,879 | $13.1K | 0.00% | +11,879 | New |
| Squarepoint Ops LLC | 11,189 | $12.3K | 0.00% | −626−5.3% | Reduced |
| Jane Street Group, LLC | 10,804 | $11.9K | 0.00% | −19,936−64.9% | Reduced |
| New York State Common Retirement Fund | 9,800 | $10.8K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 8,441 | $9.29K | 0.00% | −12,183−59.1% | Reduced |
| Royal Bank of Canada | 8,540 | $9.00K | 0.00% | −6,121−41.8% | Reduced |
| Advisor Group Holdings, Inc. | 5,000 | $5.50K | 0.00% | −10,400−67.5% | Reduced |
| CWM, LLC | 4,137 | $5.00K | 0.00% | +3,908+1,706.6% | Added |
| The PNC Financial Services Group, Inc. | 4,446 | $4.89K | 0.00% | +4,446 | New |
| Ameritas Investment Partners, Inc. | 4,110 | $4.52K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 3,635 | $4.00K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 3,167 | $3.48K | 0.00% | −3,850−54.9% | Reduced |
| California State Teachers Retirement System | 3,039 | $3.34K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 2,411 | $2.65K | 0.00% | −26,437−91.6% | Reduced |
| Amalgamated Bank | 1,451 | $2.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 2,343 | $2.00K | 0.00% | +1,152+96.7% | Added |
| Meeder Asset Management Inc | 1,584 | $1.74K | 0.00% | +1,584 | New |
| Federation des caisses Desjardins du Quebec | 1,500 | $1.65K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 685 | $754 | 0.00% | −740−51.9% | Reduced |
| N.E.W. Advisory Services LLC | 598 | $658 | 0.00% | +598 | New |
| SBI Securities Co., Ltd. | 513 | $564 | 0.00% | +73+16.6% | Added |
| EverSource Wealth Advisors, LLC | 486 | $535 | 0.00% | +486 | New |
| Rise Advisors, LLC | 373 | $410 | 0.00% | +373 | New |
| Coldstream Capital Management Inc | 311 | $343 | 0.00% | +311 | New |
| Russell Investments Group, Ltd. | 278 | $306 | 0.00% | −959−77.5% | Reduced |
| True Wealth Design, LLC | 29 | $32 | 0.00% | +29 | New |
| Rock Springs Capital Management LP | 0 | $0 | 0.00% | −1,838,916−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −54,278−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −48,414−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −33,678−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −19,445−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −14,731−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −11,812−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −9,597−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −356−100.0% | Sold out |
| Nuveen Asset Management, LLC | – | – | – | – | Not filed |