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 2024
Institutional positions in Acumen Pharmaceuticals, Inc. as of Dec 31, 2024. 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
- 80
- +8 vs. Q3 2024
- Shares held
- 42.5M
- −1.07M (−2.5%) vs. Q3 2024
- Total value
- $73.2M
- −$34.5M (−32.1%) vs. Q3 2024
- New holders
- 16
- 28 more added
- Sold out
- 8
- 19 more reduced
1 institution that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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 | $107.8M |
| Q2 2024 | 81 | $105.5M |
| Q1 2024 | 80 | $176.3M |
| Q4 2023 | 67 | $147.8M |
| Q3 2023 | 66 | $181.4M |
| Q2 2023 | 53 | $126.6M |
| Q1 2023 | 62 | $114.0M |
| Q4 2022 | 60 | $158.0M |
| Q3 2022 | 50 | $278.4M |
| 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 2024
Shares, value and share of portfolio for each institution holding Acumen Pharmaceuticals, Inc.; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 14,932,063 | $25.7M | 0.34% | 00.0% | Unchanged |
| Sands Capital Ventures, LLC | 3,417,075 | $5.88M | 1.28% | 00.0% | Unchanged |
| Franklin Resources Inc | 3,273,633 | $5.63M | 0.00% | −275,436−7.8% | Reduced |
| BlackRock, Inc. | 2,372,047 | $4.08M | 0.00% | +40,517+1.7% | Added |
| FMR LLC | 2,023,760 | $3.48M | 0.00% | −4,357−0.2% | Reduced |
| Vanguard Group Inc | 1,940,771 | $3.34M | 0.00% | +6,732+0.3% | Added |
| Rock Springs Capital Management LP | 1,838,916 | $3.16M | 0.12% | −461,143−20.0% | Reduced |
| Knollwood Investment Advisory, LLC | 1,628,510 | $2.80M | 0.29% | 00.0% | Unchanged |
| Millennium Management LLC | 1,344,745 | $2.31M | 0.00% | −490,008−26.7% | Reduced |
| Alyeska Investment Group, L.P. | 939,603 | $1.62M | 0.01% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 937,908 | $1.61M | 0.00% | +874,842+1,387.2% | Added |
| Geode Capital Management, LLC | 870,555 | $1.50M | 0.00% | +6,027+0.7% | Added |
| Laurion Capital Management LP | 867,046 | $1.49M | 0.09% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 715,000 | $1.23M | 0.01% | +79,000+12.4% | Added |
| Pathstone Holdings, LLC | 606,845 | $1.04M | 0.00% | +89,562+17.3% | Added |
| State Street Corp | 525,806 | $904.4K | 0.00% | +9,400+1.8% | Added |
| Two Sigma Advisers, LP | 499,100 | $858.5K | 0.00% | +30,000+6.4% | Added |
| Northern Trust Corp | 307,615 | $529.1K | 0.00% | −1,235−0.4% | Reduced |
| Two Sigma Investments, LP | 301,268 | $518.2K | 0.00% | −8,239−2.7% | Reduced |
| Morgan Stanley | 266,216 | $457.9K | 0.00% | +27,016+11.3% | Added |
| Ikarian Capital, LLC | 265,769 | $457.1K | 0.13% | −666−0.2% | Reduced |
| Renaissance Technologies LLC | 257,213 | $442.4K | 0.00% | −48,887−16.0% | Reduced |
| Goldman Sachs Group Inc | 219,144 | $376.9K | 0.00% | +73,283+50.2% | Added |
| Bank of America Corp | 148,668 | $255.7K | 0.00% | +9,944+7.2% | Added |
| UBS Group AG | 141,492 | $243.4K | 0.00% | +118,741+521.9% | Added |
| Bridgeway Capital Management, LLC | 134,000 | $230.5K | 0.01% | −3,400−2.5% | Reduced |
| Charles Schwab Investment Management Inc | 126,747 | $218.0K | 0.00% | +18,004+16.6% | Added |
| Dimensional Fund Advisors LP | 98,016 | $168.6K | 0.00% | +41,460+73.3% | Added |
| Deutsche Bank AG | 96,995 | $166.8K | 0.00% | +79,940+468.7% | Added |
| ADAR1 Capital Management, LLC | 94,294 | $162.2K | 0.03% | +94,294 | New |
| Barclays PLC | 93,082 | $160.1K | 0.00% | +31,085+50.1% | Added |
| Bank of New York Mellon Corp | 92,983 | $159.9K | 0.00% | 00.0% | Unchanged |
| Catalyst Financial Partners LLC | 89,699 | $154.3K | 0.03% | 00.0% | Unchanged |
| Citigroup Inc | 80,345 | $138.2K | 0.00% | +49,753+162.6% | Added |
| Nuveen Asset Management, LLC | 78,446 | $134.9K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 75,888 | $130.5K | 0.00% | +21,869+40.5% | Added |
| Qube Research & Technologies Ltd | 68,321 | $117.5K | 0.00% | −14,381−17.4% | Reduced |
| American Century Companies Inc | 54,278 | $93.4K | 0.00% | −265−0.5% | Reduced |
| Rhumbline Advisers | 53,076 | $91.3K | 0.00% | −35,408−40.0% | Reduced |
| Boothbay Fund Management, LLC | 51,042 | $87.8K | 0.00% | −666−1.3% | Reduced |
| Prelude Capital Management, LLC | 48,414 | $83.3K | 0.01% | −4,003−7.6% | Reduced |
| Atom Investors LP | 33,678 | $57.9K | 0.01% | +33,678 | New |
| Marex Group plc | 33,300 | $57.3K | 0.00% | +33,300 | New |
| Jane Street Group, LLC | 30,740 | $52.9K | 0.00% | −456,856−93.7% | Reduced |
| Intrepid Financial Planning Group LLC | 30,150 | $51.9K | 0.02% | 00.0% | Unchanged |
| Group One Trading, L.P. | 28,848 | $49.6K | 0.00% | −93,741−76.5% | Reduced |
| Wells Fargo & Company | 26,119 | $44.9K | 0.00% | +4,861+22.9% | Added |
| SG Americas Securities, LLC | 25,631 | $44.0K | 0.00% | +7,859+44.2% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 24,079 | $41.4K | 0.00% | +1,064+4.6% | Added |
| SEI Investments Co | 21,782 | $37.5K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 20,855 | $35.9K | 0.00% | −1,574−7.0% | Reduced |
| Tower Research Capital LLC (TRC) | 20,624 | $35.5K | 0.00% | +16,714+427.5% | Added |
| Invesco Ltd. | 19,842 | $34.1K | 0.00% | +1,653+9.1% | Added |
| Verition Fund Management LLC | 19,445 | $33.4K | 0.00% | +19,445 | New |
| Intech Investment Management LLC | 18,847 | $32.4K | 0.00% | +18,847 | New |
| Pinnacle Wealth Management Advisory Group, LLC | 18,020 | $31.0K | 0.00% | 00.0% | Unchanged |
| Pinnacle Associates Ltd | 18,020 | $31.0K | 0.00% | +18,020 | New |
| Clune & Associates, Ltd. | 16,500 | $28.4K | 0.01% | +16,500 | New |
| Advisor Group Holdings, Inc. | 15,400 | $26.5K | 0.00% | +5,000+48.1% | Added |
| Susquehanna Fundamental Investments, LLC | 14,731 | $25.3K | 0.00% | +14,731 | New |
| Royal Bank of Canada | 14,661 | $25.0K | 0.00% | +8,720+146.8% | Added |
| Price T Rowe Associates Inc | 13,616 | $24.0K | 0.00% | −836,003−98.4% | Reduced |
| JustInvest LLC | 12,894 | $22.2K | 0.00% | +12,894 | New |
| Squarepoint Ops LLC | 11,815 | $20.3K | 0.00% | +11,815 | New |
| ProShare Advisors LLC | 11,812 | $20.3K | 0.00% | +11,812 | New |
| Integrated Wealth Concepts LLC | 10,100 | $17.4K | 0.00% | +10,100 | New |
| New York State Common Retirement Fund | 9,800 | $16.9K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 9,597 | $16.5K | 0.00% | −7,315−43.3% | Reduced |
| BNP Paribas Arbitrage, SA | 7,017 | $12.1K | 0.00% | +7,017 | New |
| Ameritas Investment Partners, Inc. | 4,110 | $7.07K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 3,635 | $6.25K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 3,039 | $5.23K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 1,500 | $2.58K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 1,425 | $2.45K | 0.00% | +1,292+971.4% | Added |
| Russell Investments Group, Ltd. | 1,237 | $2.13K | 0.00% | +1,237 | New |
| Amalgamated Bank | 1,451 | $2.00K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 1,191 | $2.00K | 0.00% | +1,191 | New |
| SBI Securities Co., Ltd. | 440 | $757 | 0.00% | +440 | New |
| Nisa Investment Advisors, LLC | 356 | $612 | 0.00% | +256+256.0% | Added |
| CWM, LLC | 229 | $0 | 0.00% | +61+36.3% | Added |
| TD Asset Management Inc | 0 | $0 | 0.00% | −139,206−100.0% | Sold out |
| Manufacturers Life Insurance Company, The | 0 | $0 | 0.00% | −52,333−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −22,255−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −21,903−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −21,200−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −18,643−100.0% | Sold out |
| Fortitude Advisory Group L.L.C. | 0 | $0 | 0.00% | −13,300−100.0% | Sold out |
| Capital Performance Advisors LLP | 0 | $0 | 0.00% | −52−100.0% | Sold out |
| Planning Capital Management Corp | – | – | – | – | Not filed |