Acumen PharmaceuticalsABOS
13F holders, Q1 2025 (March 31)81holders +1
10new positions
9sold out
3famous investors
$1.11avg. 13F price*
At the end of Q1 2025, 81 institutions reported holding Acumen Pharmaceuticals Inc. (ABOS) in their 13F filings, up 1 from Q4 2024. 10 opened new positions and 9 sold out. The largest holders were Ra Capital Management, L.P. ($16.4M), Sands Capital Alternatives, LLC ($3.8M) and Franklin Resources Inc. ($3.5M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Acumen Pharmaceuticals Inc.
- CUSIP
- 00509G209
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 10 | $85K |
| Exits | 9 | $3.5M |
All 13F filers, Q4 2024 → Q1 2025: 850,397 shares bought and 3,113,924 shares sold, net −2,263,527 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 81 holders
| Ra Capital Management, L.P. | 0.27% | No change | 14,932,063 | $16.4M |
| Sands Capital Alternatives, LLC | 0.92% | No change | 3,417,075 | $3.8M |
| Franklin Resources Inc. | 0.00% | Reduce -4.0% | 3,141,939 | $3.5M |
| BlackRock, Inc. | 0.00% | Reduce -1.7% | 2,331,049 | $2.6M |
| FMR LLC | 0.00% | Add +0.1% | 2,025,623 | $2.2M |
| Vanguard Group Inc. | 0.00% | Reduce -0.2% | 1,936,991 | $2.1M |
| Knollwood Investment Advisory, LLC | 0.20% | No change | 1,628,510 | $1.8M |
| JPMorgan Chase & Co. | 0.00% | Reduce -11.3% | 832,267 | $1.5M |
| Millennium Management | 0.00% | Reduce -15.6% | 1,135,222 | $1.2M |
| Pathstone Holdings, LLC | 0.01% | Add +79.0% | 1,086,531 | $1.2M |
| Alyeska Investment Group, L.P. | 0.00% | No change | 939,603 | $1.0M |
| Laurion Capital Management LP | 0.08% | No change | 867,046 | $954K |
| Geode Capital Management, LLC | 0.00% | Reduce -1.0% | 861,899 | $948K |
| Hudson Bay Capital Management LP | 0.01% | Add +7.7% | 770,000 | $847K |
| State Street Corp. | 0.00% | Reduce -0.9% | 521,206 | $573K |
| Two Sigma Advisers, LP | 0.00% | Reduce -7.1% | 463,700 | $510K |
| Northern Trust Corp. | 0.00% | Reduce -5.8% | 289,836 | $319K |
| Ikarian Capital, LLC | 0.10% | No change | 265,769 | $292K |
| Renaissance Technologies | 0.00% | Reduce -0.2% | 256,700 | $282K |
| Two Sigma Investments, LP | 0.00% | Reduce -22.9% | 232,293 | $256K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -10.5% | 196,207 | $216K |
| Bank of America Corp. | 0.00% | Add +6.9% | 158,934 | $175K |
| Morgan Stanley | 0.00% | Reduce -42.7% | 152,636 | $168K |
| ADAR1 Capital Management, LLC | 0.03% | Add +55.0% | 146,183 | $161K |
| Invesco Ltd. | 0.00% | Add +544.1% | 127,798 | $141K |
| UBS Group AG | 0.00% | Reduce -13.1% | 123,015 | $135K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -7.8% | 116,902 | $129K |
| Bridgeway Capital Management, LLC | 0.00% | Reduce -14.1% | 115,171 | $127K |
| Susquehanna International Group, LLP | 0.00% | Add +46.2% | 110,976 | $122K |
| Deutsche Bank AG | 0.00% | No change | 96,995 | $107K |
| Bank of New York Mellon Corp | 0.00% | Reduce -2.9% | 90,258 | $99K |
| Catalyst Financial Partners LLC | 0.02% | No change | 89,699 | $99K |
| Nuveen, LLC | 0.00% | — | 78,446 | $86K |
| Barclays PLC | 0.00% | Reduce -22.4% | 72,265 | $79K |
| Boothbay Fund Management, LLC | 0.00% | No change | 51,042 | $56K |
| Rhumbline Advisers | 0.00% | Reduce -14.2% | 45,516 | $50K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -55.6% | 43,524 | $48K |
| AQR Capital Management | 0.00% | New | 41,735 | $46K |
| Marex Group Ltd | 0.00% | No change | 33,300 | $37K |
| Intrepid Financial Planning Group LLC | 0.02% | No change | 30,150 | $33K |
| Citigroup Inc. | 0.00% | Reduce -62.9% | 29,836 | $33K |
| Intech Investment Management LLC | 0.00% | Add +51.4% | 28,540 | $31K |
| Wells Fargo & Company | 0.00% | Add +6.0% | 27,678 | $30K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.5% | 25,171 | $28K |
| Qube Research & Technologies Ltd | 0.00% | Reduce -67.6% | 22,135 | $24K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | Add +70.7% | 22,006 | $24K |
| Sei Investments Co. | 0.00% | No change | 21,782 | $24K |
| Corebridge Financial, Inc. | 0.00% | Reduce -1.5% | 20,550 | $23K |
| SG Americas Securities, LLC | 0.00% | Reduce -29.8% | 18,007 | $20K |
| Pinnacle Wealth Management Advisory Group, LLC | 0.00% | No change | 18,020 | $20K |
| Pinnacle Associates Ltd. | 0.00% | No change | 18,020 | $20K |
| Factor Wealth Management LTD | 0.01% | No change | 16,500 | $18K |
| Thoroughbred Financial Services, LLC | 0.00% | New | 15,500 | $17K |
| Integrated Wealth Concepts LLC | 0.00% | Add +50.7% | 15,219 | $17K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 13,616 | $15K |
| Two Sigma Securities, LLC | 0.00% | New | 11,879 | $13K |
| Squarepoint Ops LLC | 0.00% | Reduce -5.3% | 11,189 | $12K |
| Jane Street Group, LLC | 0.00% | Reduce -64.8% | 10,804 | $12K |
| New York State Common Retirement Fund | 0.00% | No change | 9,800 | $11K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -59.1% | 8,441 | $9K |
| Royal Bank of Canada | 0.00% | Reduce -41.8% | 8,540 | $9K |
| Osaic Holdings, Inc. | 0.00% | Reduce -67.5% | 5,000 | $6K |
| Cwm, LLC | 0.00% | Add +1706.5% | 4,137 | $5K |
| PNC Financial Services Group, Inc. | 0.00% | New | 4,446 | $5K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 4,110 | $5K |
| Legal & General Group Plc | 0.00% | No change | 3,635 | $4K |
| BNP Paribas Financial Markets | 0.00% | Reduce -54.9% | 3,167 | $3K |
| California State Teachers Retirement System | 0.00% | No change | 3,039 | $3K |
| Group One Trading LLC | 0.00% | Reduce -91.6% | 2,411 | $3K |
| Simplex Trading, LLC | 0.00% | Add +96.7% | 2,343 | $2K |
| Amalgamated Bank | 0.00% | No change | 1,451 | $2K |
| Meeder Asset Management Inc. | 0.00% | New | 1,584 | $2K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 1,500 | $2K |
| Sterling Capital Management LLC | 0.00% | Reduce -51.9% | 685 | $754 |
| N.E.W. Advisory Services LLC | 0.00% | New | 598 | $658 |
| SBI Securities Co., Ltd. | 0.00% | Add +16.6% | 513 | $564 |
| EverSource Wealth Advisors, LLC | 0.00% | New | 486 | $535 |
| Rise Advisors, LLC | 0.00% | New | 373 | $410 |
| Coldstream Capital Management Inc. | 0.00% | New | 311 | $343 |
| Russell Investments Group, Ltd. | 0.00% | Reduce -77.5% | 278 | $306 |
| True Wealth Design, LLC | 0.00% | New | 29 | $32 |
"% of holder's portfolio" is ABOS's weight in each manager's 13F, not the share of Acumen Pharmaceuticals Inc. the manager owns.