Acumen PharmaceuticalsABOS
13F holders, Q4 2024 (December 31)80holders +7
13new positions
8sold out
3famous investors
$1.72avg. 13F price*
At the end of Q4 2024, 80 institutions reported holding Acumen Pharmaceuticals Inc. (ABOS) in their 13F filings, up 7 from Q3 2024. 13 opened new positions and 8 sold out. The largest holders were Ra Capital Management, L.P. ($25.7M), Sands Capital Alternatives, LLC ($5.9M) and Franklin Resources Inc. ($5.6M). 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 Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Acumen Pharmaceuticals Inc.
- CUSIP
- 00509G209
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2024 → Q4 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 13 | $471K |
| Exits | 8 | $716K |
All 13F filers, Q3 2024 → Q4 2024: 1,928,305 shares bought and 3,032,475 shares sold, net −1,104,170 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 80 holders
| Ra Capital Management, L.P. | 0.34% | No change | 14,932,063 | $25.7M |
| Sands Capital Alternatives, LLC | 1.28% | No change | 3,417,075 | $5.9M |
| Franklin Resources Inc. | 0.00% | Reduce -7.8% | 3,273,633 | $5.6M |
| BlackRock, Inc. | 0.00% | Add +1.7% | 2,372,047 | $4.1M |
| FMR LLC | 0.00% | Reduce -0.2% | 2,023,760 | $3.5M |
| Vanguard Group Inc. | 0.00% | Add +0.3% | 1,940,771 | $3.3M |
| Rock Springs Capital Management LP | 0.12% | Reduce -20.1% | 1,838,916 | $3.2M |
| Knollwood Investment Advisory, LLC | 0.29% | No change | 1,628,510 | $2.8M |
| Millennium Management | 0.00% | Reduce -26.7% | 1,344,745 | $2.3M |
| Alyeska Investment Group, L.P. | 0.01% | No change | 939,603 | $1.6M |
| JPMorgan Chase & Co. | 0.00% | Add +1387.2% | 937,908 | $1.6M |
| Geode Capital Management, LLC | 0.00% | Add +0.7% | 870,555 | $1.5M |
| Laurion Capital Management LP | 0.10% | No change | 867,046 | $1.5M |
| Hudson Bay Capital Management LP | 0.01% | Add +12.4% | 715,000 | $1.2M |
| Pathstone Holdings, LLC | 0.00% | Add +17.3% | 606,845 | $1.0M |
| State Street Corp. | 0.00% | Add +1.8% | 525,806 | $904K |
| Two Sigma Advisers, LP | 0.00% | Add +6.4% | 499,100 | $858K |
| Northern Trust Corp. | 0.00% | Reduce -0.4% | 307,615 | $529K |
| Two Sigma Investments, LP | 0.00% | Reduce -2.7% | 301,268 | $518K |
| Morgan Stanley | 0.00% | Add +11.3% | 266,216 | $458K |
| Ikarian Capital, LLC | 0.13% | Reduce -0.3% | 265,769 | $457K |
| Renaissance Technologies | 0.00% | Reduce -16.0% | 257,213 | $442K |
| Goldman Sachs Group Inc. | 0.00% | Add +50.2% | 219,144 | $377K |
| Bank of America Corp. | 0.00% | Add +7.2% | 148,668 | $256K |
| UBS Group AG | 0.00% | Add +521.9% | 141,492 | $243K |
| Bridgeway Capital Management, LLC | 0.01% | Reduce -2.5% | 134,000 | $230K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +16.6% | 126,747 | $218K |
| Dimensional Fund Advisors LP | 0.00% | Add +73.3% | 98,016 | $169K |
| Deutsche Bank AG | 0.00% | Add +468.7% | 96,995 | $167K |
| ADAR1 Capital Management, LLC | 0.03% | New | 94,294 | $162K |
| Barclays PLC | 0.00% | Add +50.1% | 93,082 | $160K |
| Bank of New York Mellon Corp | 0.00% | No change | 92,983 | $160K |
| Catalyst Financial Partners LLC | 0.03% | No change | 89,699 | $154K |
| Citigroup Inc. | 0.00% | Add +162.6% | 80,345 | $138K |
| Nuveen Asset Management, LLC | 0.00% | No change | 78,446 | $135K |
| Susquehanna International Group, LLP | 0.00% | Add +40.5% | 75,888 | $131K |
| Qube Research & Technologies Ltd | 0.00% | Reduce -17.4% | 68,321 | $118K |
| American Century Companies Inc. | 0.00% | Reduce -0.5% | 54,278 | $93K |
| Rhumbline Advisers | 0.00% | Reduce -40.0% | 53,076 | $91K |
| Boothbay Fund Management, LLC | 0.00% | Reduce -1.3% | 51,042 | $88K |
| Prelude Capital Management, LLC | 0.01% | Reduce -7.6% | 48,414 | $83K |
| Atom Investors LP | 0.01% | New | 33,678 | $58K |
| Marex Group Ltd | 0.00% | New | 33,300 | $57K |
| Jane Street Group, LLC | 0.00% | Reduce -93.7% | 30,740 | $53K |
| Intrepid Financial Planning Group LLC | 0.02% | No change | 30,150 | $52K |
| Group One Trading LLC | 0.00% | Reduce -76.5% | 28,848 | $50K |
| Wells Fargo & Company | 0.00% | Add +22.9% | 26,119 | $45K |
| SG Americas Securities, LLC | 0.00% | Add +44.2% | 25,631 | $44K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.6% | 24,079 | $41K |
| Sei Investments Co. | 0.00% | No change | 21,782 | $37K |
| Corebridge Financial, Inc. | 0.00% | Reduce -7.0% | 20,855 | $36K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +427.5% | 20,624 | $35K |
| Invesco Ltd. | 0.00% | Add +9.1% | 19,842 | $34K |
| Verition Fund Management LLC | 0.00% | New | 19,445 | $33K |
| Intech Investment Management LLC | 0.00% | New | 18,847 | $32K |
| Pinnacle Wealth Management Advisory Group, LLC | 0.00% | No change | 18,020 | $31K |
| Pinnacle Associates Ltd. | 0.00% | New | 18,020 | $31K |
| Factor Wealth Management LTD | 0.01% | — | 16,500 | $28K |
| Osaic Holdings, Inc. | 0.00% | Add +48.1% | 15,400 | $26K |
| Susquehanna Fundamental Investments, LLC | 0.00% | — | 14,731 | $25K |
| Royal Bank of Canada | 0.00% | Add +146.8% | 14,661 | $25K |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -98.4% | 13,616 | $24K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | New | 12,894 | $22K |
| Squarepoint Ops LLC | 0.00% | New | 11,815 | $20K |
| ProShare Advisors LLC | 0.00% | New | 11,812 | $20K |
| Integrated Wealth Concepts LLC | 0.00% | New | 10,100 | $17K |
| New York State Common Retirement Fund | 0.00% | No change | 9,800 | $17K |
| Citadel Advisors | 0.00% | Reduce -43.3% | 9,597 | $17K |
| BNP Paribas Financial Markets | 0.00% | New | 7,017 | $12K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 4,110 | $7K |
| Legal & General Group Plc | 0.00% | No change | 3,635 | $6K |
| California State Teachers Retirement System | 0.00% | No change | 3,039 | $5K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 1,500 | $3K |
| Sterling Capital Management LLC | 0.00% | Add +971.4% | 1,425 | $2K |
| Russell Investments Group, Ltd. | 0.00% | New | 1,237 | $2K |
| Simplex Trading, LLC | 0.00% | New | 1,191 | $2K |
| Amalgamated Bank | 0.00% | No change | 1,451 | $2K |
| SBI Securities Co., Ltd. | 0.00% | — | 440 | $757 |
| Nisa Investment Advisors, LLC | 0.00% | Add +256.0% | 356 | $612 |
| Cwm, LLC | 0.00% | Add +36.3% | 229 | $0 |
"% of holder's portfolio" is ABOS's weight in each manager's 13F, not the share of Acumen Pharmaceuticals Inc. the manager owns.