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, Q3 2021
Institutional positions in Acumen Pharmaceuticals, Inc. as of Sep 30, 2021. 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
- 41
- +41 vs. Q2 2021
- Shares held
- 24.1M
- +24.1M vs. Q2 2021
- Total value
- $357.4M
- +$357.4M vs. Q2 2021
- New holders
- 41
- 0 more added
- Sold out
- 0
- 0 more reduced
Compare with Q2 2021: 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, Q3 2021
Shares, value and share of portfolio for each institution holding Acumen Pharmaceuticals, Inc.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 9,770,773 | $145.2M | 2.01% | +9,770,773 | New |
| Sands Capital Ventures, LLC | 3,417,075 | $50.8M | 7.66% | +3,417,075 | New |
| BlackRock Inc. | 2,868,791 | $42.6M | 0.00% | +2,868,791 | New |
| Rock Springs Capital Management LP | 1,579,191 | $23.5M | 0.49% | +1,579,191 | New |
| Vanguard Group Inc | 1,324,898 | $19.7M | 0.00% | +1,324,898 | New |
| Franklin Resources Inc | 937,500 | $13.9M | 0.01% | +937,500 | New |
| Janus Henderson Group PLC | 860,181 | $12.8M | 0.01% | +860,181 | New |
| Laurion Capital Management LP | 656,848 | $9.76M | 0.14% | +656,848 | New |
| Guardian Point Capital, LP | 500,000 | $7.43M | 1.72% | +500,000 | New |
| Woodline Partners LP | 468,794 | $6.97M | 0.12% | +468,794 | New |
| Moore Capital Management, LP | 369,583 | $5.49M | 0.11% | +369,583 | New |
| BVF Inc | 289,663 | $4.30M | 0.17% | +289,663 | New |
| Marshall Wace, LLP | 156,250 | $2.32M | 0.01% | +156,250 | New |
| Marshall Wace North America L.P. | 153,908 | $2.29M | 0.01% | +153,908 | New |
| Geode Capital Management, LLC | 107,806 | $1.60M | 0.00% | +107,806 | New |
| FMR LLC | 107,100 | $1.59M | 0.00% | +107,100 | New |
| State Street Corp | 99,775 | $1.48M | 0.00% | +99,775 | New |
| Northern Trust Corp | 87,401 | $1.30M | 0.00% | +87,401 | New |
| Pura Vida Investments, LLC | 75,000 | $1.11M | 0.08% | +75,000 | New |
| Goldman Sachs Group Inc | 63,635 | $946.0K | 0.00% | +63,635 | New |
| Citadel Advisors LLC | 39,346 | $585.0K | 0.00% | +39,346 | New |
| Charles Schwab Investment Management Inc | 24,037 | $358.0K | 0.00% | +24,037 | New |
| D. E. Shaw & Co., Inc. | 18,314 | $272.0K | 0.00% | +18,314 | New |
| Bank of New York Mellon Corp | 17,945 | $266.0K | 0.00% | +17,945 | New |
| Chicago Partners Investment Group LLC | 14,804 | $199.0K | 0.01% | +14,804 | New |
| Nuveen Asset Management, LLC | 12,922 | $192.0K | 0.00% | +12,922 | New |
| Deutsche Bank AG | 5,518 | $82.0K | 0.00% | +5,518 | New |
| American International Group, Inc. | 5,247 | $78.0K | 0.00% | +5,247 | New |
| California State Teachers Retirement System | 5,180 | $77.0K | 0.00% | +5,180 | New |
| JPMorgan Chase & Co | 3,672 | $55.0K | 0.00% | +3,672 | New |
| STRS Ohio | 2,200 | $32.0K | 0.00% | +2,200 | New |
| Citigroup Inc | 1,094 | $16.0K | 0.00% | +1,094 | New |
| Royal Bank of Canada | 1,101 | $16.0K | 0.00% | +1,101 | New |
| Bank of America Corp | 990 | $14.0K | 0.00% | +990 | New |
| Legal & General Group Plc | 888 | $13.0K | 0.00% | +888 | New |
| Ameritas Investment Partners, Inc. | 735 | $11.0K | 0.00% | +735 | New |
| Tower Research Capital LLC (TRC) | 695 | $10.0K | 0.00% | +695 | New |
| UBS Group AG | 610 | $9.00K | 0.00% | +610 | New |
| Morgan Stanley | 569 | $8.00K | 0.00% | +569 | New |
| Wells Fargo & Company | 51 | $1.00K | 0.00% | +51 | New |
| Captrust Financial Advisors | 78 | $1.00K | 0.00% | +78 | New |