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 2024
Institutional positions in Acumen Pharmaceuticals, Inc. as of Mar 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
- +13 vs. Q4 2023
- Shares held
- 43.4M
- +4.93M (+12.8%) vs. Q4 2023
- Total value
- $175.6M
- +$28.0M (+18.9%) vs. Q4 2023
- New holders
- 24
- 22 more added
- Sold out
- 11
- 24 more reduced
Compare with Q4 2023: 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 2024
Shares, value and share of portfolio for each institution holding Acumen Pharmaceuticals, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 14,932,063 | $60.5M | 0.77% | 00.0% | Unchanged |
| Sands Capital Ventures, LLC | 3,417,075 | $13.8M | 3.34% | 00.0% | Unchanged |
| Franklin Resources Inc | 3,395,418 | $13.8M | 0.00% | +36,609+1.1% | Added |
| Millennium Management LLC | 2,629,541 | $10.6M | 0.01% | +1,134,257+75.9% | Added |
| Rock Springs Capital Management LP | 2,300,059 | $9.32M | 0.24% | 00.0% | Unchanged |
| FMR LLC | 2,089,000 | $8.46M | 0.00% | +2,089,000 | New |
| Laurion Capital Management LP | 1,895,023 | $7.67M | 0.21% | 00.0% | Unchanged |
| Vanguard Group Inc | 1,665,058 | $6.74M | 0.00% | −174,494−9.5% | Reduced |
| Knollwood Investment Advisory, LLC | 1,628,510 | $6.60M | 1.19% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 1,098,276 | $4.45M | 0.00% | +1,098,276 | New |
| Alyeska Investment Group, L.P. | 939,603 | $3.81M | 0.02% | +206,400+28.2% | Added |
| Jane Street Group, LLC | 600,255 | $2.43M | 0.00% | −4,365−0.7% | Reduced |
| Parkman Healthcare Partners LLC | 576,657 | $2.34M | 0.29% | −26,840−4.4% | Reduced |
| Hudson Bay Capital Management LP | 560,000 | $2.27M | 0.02% | −4,400−0.8% | Reduced |
| Pathstone Holdings, LLC | 480,181 | $1.94M | 0.01% | +1,032+0.2% | Added |
| Schonfeld Strategic Advisors LLC | 458,484 | $1.86M | 0.01% | −103,058−18.4% | Reduced |
| Goldman Sachs Group Inc | 317,904 | $1.29M | 0.00% | +203,172+177.1% | Added |
| Geode Capital Management, LLC | 285,139 | $1.16M | 0.00% | +20,536+7.8% | Added |
| Ikarian Capital, LLC | 266,435 | $1.08M | 0.29% | −48,830−15.5% | Reduced |
| Susquehanna International Group, LLP | 265,843 | $1.08M | 0.00% | −233,951−46.8% | Reduced |
| Tang Capital Management LLC | 246,895 | $999.9K | 0.10% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 217,000 | $878.9K | 0.00% | +87,300+67.3% | Added |
| BlackRock Inc. | 189,697 | $768.3K | 0.00% | −58,398−23.5% | Reduced |
| Man Group plc | 187,585 | $759.7K | 0.00% | +42,955+29.7% | Added |
| Two Sigma Investments, LP | 177,901 | $720.5K | 0.00% | −66,515−27.2% | Reduced |
| Qube Research & Technologies Ltd | 167,588 | $678.7K | 0.00% | +78,962+89.1% | Added |
| TD Asset Management Inc | 148,800 | $602.6K | 0.00% | +148,800 | New |
| Bridgeway Capital Management, LLC | 148,400 | $601.0K | 0.01% | +148,400 | New |
| Citigroup Inc | 135,394 | $548.3K | 0.00% | −12,417−8.4% | Reduced |
| Squarepoint Ops LLC | 113,232 | $458.6K | 0.00% | +60,403+114.3% | Added |
| Wellington Management Group LLP | 112,258 | $454.6K | 0.00% | +112,258 | New |
| HRT Financial LP | 105,117 | $425.0K | 0.00% | +105,117 | New |
| New York Life Investment Management LLC | 95,089 | $385.1K | 0.00% | +95,089 | New |
| Marshall Wace, LLP | 89,707 | $363.3K | 0.00% | +89,707 | New |
| State Street Corp | 81,778 | $331.2K | 0.00% | −3,300−3.9% | Reduced |
| Bank of America Corp | 80,616 | $326.5K | 0.00% | −23,753−22.8% | Reduced |
| Catalyst Financial Partners LLC | 89,699 | $311.3K | 0.08% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 71,890 | $291.2K | 0.00% | +37,945+111.8% | Added |
| Balyasny Asset Management LLC | 63,949 | $259.0K | 0.00% | +43,371+210.8% | Added |
| Susquehanna Fundamental Investments, LLC | 62,518 | $253.2K | 0.01% | +62,518 | New |
| Dimensional Fund Advisors LP | 61,728 | $250.0K | 0.00% | +5,937+10.6% | Added |
| Manufacturers Life Insurance Company, The | 60,041 | $243.2K | 0.00% | +60,041 | New |
| Marathon Trading Investment Management LLC | 60,000 | $243.0K | 0.10% | +60,000 | New |
| Northern Trust Corp | 56,773 | $229.9K | 0.00% | +95+0.2% | Added |
| Brevan Howard Capital Management LP | 56,369 | $228.3K | 0.02% | +56,369 | New |
| Boothbay Fund Management, LLC | 51,708 | $209.4K | 0.01% | −30,474−37.1% | Reduced |
| Morgan Stanley | 48,712 | $197.3K | 0.00% | +25,586+110.6% | Added |
| Barclays PLC | 47,310 | $191.6K | 0.00% | −37−0.1% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 37,191 | $150.6K | 0.01% | +17,843+92.2% | Added |
| Prelude Capital Management, LLC | 37,000 | $149.8K | 0.01% | +7,900+27.1% | Added |
| American Century Companies Inc | 34,604 | $140.1K | 0.00% | +9,876+39.9% | Added |
| Bank of Montreal | 31,900 | $131.7K | 0.00% | +31,900 | New |
| Intrepid Financial Planning Group LLC | 30,150 | $122.1K | 0.05% | 00.0% | Unchanged |
| Group One Trading, L.P. | 28,037 | $113.5K | 0.00% | +20,494+271.7% | Added |
| Point72 Asia (Singapore) Pte. Ltd. | 27,556 | $111.6K | 0.03% | +25,556+1,277.8% | Added |
| ExodusPoint Capital Management, LP | 25,620 | $104.0K | 0.00% | −6,636−20.6% | Reduced |
| Gsa Capital Partners LLP | 25,370 | $103.0K | 0.01% | +25,370 | New |
| Jump Financial, LLC | 23,951 | $97.0K | 0.00% | −79,049−76.7% | Reduced |
| Omers Administration Corp | 23,800 | $96.4K | 0.00% | +23,800 | New |
| Citadel Advisors LLC | 23,351 | $94.6K | 0.00% | −107,765−82.2% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 21,903 | $88.7K | 0.00% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 19,000 | $77.0K | 0.00% | +19,000 | New |
| Pinnacle Associates Ltd | 18,020 | $73.0K | 0.00% | +18,020 | New |
| Pinnacle Wealth Management Advisory Group, LLC | 18,020 | $73.0K | 0.01% | +18,020 | New |
| Stifel Financial Corp | 14,650 | $59.3K | 0.00% | −1,500−9.3% | Reduced |
| SG Americas Securities, LLC | 12,856 | $52.0K | 0.00% | +12,856 | New |
| Algert Global LLC | 12,410 | $50.3K | 0.00% | +12,410 | New |
| LMR Partners LLP | 11,503 | $46.6K | 0.00% | +11,503 | New |
| CTC Alternative Strategies, Ltd. | 11,100 | $45.0K | 0.03% | +11,100 | New |
| Chicago Partners Investment Group LLC | 13,958 | $44.1K | 0.00% | −4,357−23.8% | Reduced |
| Advisor Group Holdings, Inc. | 10,400 | $42.1K | 0.00% | +10,000+2,500.0% | Added |
| Integrated Wealth Concepts LLC | 10,100 | $40.9K | 0.00% | −4,500−30.8% | Reduced |
| UBS Group AG | 6,643 | $26.9K | 0.00% | +6,635+82,937.5% | Added |
| Cubist Systematic Strategies, LLC | 2,396 | $9.70K | 0.00% | −31,509−92.9% | Reduced |
| Sandy Spring Bank | 1,500 | $6.08K | 0.00% | +1,500 | New |
| Tower Research Capital LLC (TRC) | 1,410 | $5.71K | 0.00% | −27,679−95.2% | Reduced |
| Wells Fargo & Company | 1,208 | $4.89K | 0.00% | −997−45.2% | Reduced |
| Kelly Financial Services LLC | 944 | $3.82K | 0.00% | 00.0% | Unchanged |
| Macquarie Group Ltd | 1,247 | $5 | 0.00% | +1,247 | New |
| Royal Bank of Canada | 102 | $0 | 0.00% | −566−84.7% | Reduced |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −138,029−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −91,496−100.0% | Sold out |
| 683 Capital Management, LLC | 0 | $0 | 0.00% | −78,431−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −40,000−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −23,787−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −21,422−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −16,929−100.0% | Sold out |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −2,000−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −1,200−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0 | $0 | 0.00% | −413−100.0% | Sold out |