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 2023
Institutional positions in Acumen Pharmaceuticals, Inc. as of Sep 30, 2023. 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
- 66
- +13 vs. Q2 2023
- Shares held
- 43.7M
- +17.4M (+66.0%) vs. Q2 2023
- Total value
- $181.4M
- +$54.8M (+43.2%) vs. Q2 2023
- New holders
- 25
- 23 more added
- Sold out
- 12
- 11 more reduced
Compare with Q2 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 | $107.8M |
| 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 2023
Shares, value and share of portfolio for each institution holding Acumen Pharmaceuticals, Inc.; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 14,932,063 | $62.0M | 1.22% | +5,161,290+52.8% | Added |
| Sands Capital Ventures, LLC | 3,417,075 | $14.2M | 4.20% | 00.0% | Unchanged |
| Franklin Resources Inc | 2,838,765 | $11.8M | 0.01% | +2,838,765 | New |
| Rock Springs Capital Management LP | 2,812,579 | $11.7M | 0.31% | +2,812,579 | New |
| Deep Track Capital, LP | 2,513,044 | $10.4M | 0.40% | −1,403,317−35.8% | Reduced |
| Boxer Capital, LLC | 2,206,983 | $9.16M | 0.49% | +2,206,983 | New |
| Laurion Capital Management LP | 1,895,023 | $7.86M | 0.21% | +688,475+57.1% | Added |
| Vanguard Group Inc | 1,856,552 | $7.70M | 0.00% | +1,121,700+152.6% | Added |
| Millennium Management LLC | 1,716,290 | $7.12M | 0.01% | +570,272+49.8% | Added |
| Knollwood Investment Advisory, LLC | 1,628,510 | $6.76M | 3.16% | −50,000−3.0% | Reduced |
| Great Point Partners LLC | 1,074,101 | $4.46M | 0.84% | +22,834+2.2% | Added |
| Hudson Bay Capital Management LP | 1,050,000 | $4.36M | 0.02% | +655,000+165.8% | Added |
| Altium Capital Management LP | 650,000 | $2.70M | 1.56% | +650,000 | New |
| Schonfeld Strategic Advisors LLC | 645,112 | $2.68M | 0.02% | +645,112 | New |
| Alyeska Investment Group, L.P. | 613,822 | $2.55M | 0.02% | +613,822 | New |
| BlackRock Inc. | 583,414 | $2.42M | 0.00% | +100,090+20.7% | Added |
| Parkman Healthcare Partners LLC | 499,814 | $2.07M | 0.38% | +499,814 | New |
| Pathstone Family Office, LLC | 478,790 | $1.99M | 0.02% | +11,730+2.5% | Added |
| Ikarian Capital, LLC | 315,265 | $1.31M | 0.49% | −339,680−51.9% | Reduced |
| Geode Capital Management, LLC | 264,603 | $1.10M | 0.00% | +97,783+58.6% | Added |
| Susquehanna International Group, LLP | 177,779 | $737.8K | 0.00% | +177,779 | New |
| Ghost Tree Capital, LLC | 150,000 | $622.5K | 0.30% | +150,000 | New |
| Two Sigma Investments, LP | 132,351 | $549.3K | 0.00% | +105,716+396.9% | Added |
| Bridgeway Capital Management, LLC | 115,033 | $477.4K | 0.01% | −27,800−19.5% | Reduced |
| Wellington Management Group LLP | 104,359 | $433.1K | 0.00% | +104,359 | New |
| Catalyst Financial Partners LLC | 89,699 | $372.3K | 0.12% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 87,400 | $363.0K | 0.00% | +42,600+95.1% | Added |
| Dimensional Fund Advisors LP | 75,602 | $313.7K | 0.00% | +6,623+9.6% | Added |
| UBS Oconnor LLC | 69,538 | $288.6K | 0.01% | −10,000−12.6% | Reduced |
| Boothbay Fund Management, LLC | 61,185 | $253.9K | 0.01% | −65,921−51.9% | Reduced |
| State Street Corp | 59,778 | $248.1K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 57,299 | $237.8K | 0.00% | +43,727+322.2% | Added |
| Northern Trust Corp | 56,190 | $233.2K | 0.00% | +24,096+75.1% | Added |
| DekaBank Deutsche Girozentrale | 40,000 | $167.0K | 0.00% | +40,000 | New |
| Caption Management, LLC | 40,000 | $166.0K | 0.02% | +40,000 | New |
| Citigroup Inc | 38,498 | $159.8K | 0.00% | +37,801+5,423.4% | Added |
| Jump Financial, LLC | 33,900 | $140.7K | 0.01% | +33,900 | New |
| Intrepid Financial Planning Group LLC | 30,150 | $125.1K | 0.06% | +10,000+49.6% | Added |
| Qube Research & Technologies Ltd | 26,113 | $108.4K | 0.00% | +26,113 | New |
| Marshall Wace, LLP | 25,492 | $105.8K | 0.00% | +25,492 | New |
| Verition Fund Management LLC | 23,500 | $97.5K | 0.00% | +23,500 | New |
| Barclays PLC | 22,425 | $93.1K | 0.00% | −2,969−11.7% | Reduced |
| Morgan Stanley | 22,239 | $92.3K | 0.00% | +6,915+45.1% | Added |
| Two Sigma Advisers, LP | 20,088 | $83.4K | 0.00% | +20,088 | New |
| Pinnacle Associates Ltd | 18,020 | $74.8K | 0.00% | 00.0% | Unchanged |
| Pinnacle Wealth Management Advisory Group, LLC | 18,020 | $74.8K | 0.01% | 00.0% | Unchanged |
| Jane Street Group, LLC | 16,788 | $69.7K | 0.00% | +16,788 | New |
| XTX Topco Ltd | 16,538 | $68.6K | 0.01% | +16,538 | New |
| Bank of America Corp | 16,475 | $68.4K | 0.00% | +732+4.6% | Added |
| American Century Companies Inc | 13,816 | $57.3K | 0.00% | +13,816 | New |
| Integrated Wealth Concepts LLC | 13,600 | $56.4K | 0.00% | +13,600 | New |
| Simplex Trading, LLC | 11,448 | $47.0K | 0.00% | +6,902+151.8% | Added |
| JPMorgan Chase & Co | 11,025 | $46.0K | 0.00% | +9,750+764.7% | Added |
| Chicago Partners Investment Group LLC | 13,579 | $44.9K | 0.00% | +13,579 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 3,393 | $14.1K | 0.00% | +3,393 | New |
| Cutler Group LP | 2,500 | $10.0K | 0.00% | +1,080+76.1% | Added |
| Tower Research Capital LLC (TRC) | 2,128 | $8.83K | 0.00% | −1,447−40.5% | Reduced |
| China Universal Asset Management Co., Ltd. | 1,481 | $6.15K | 0.00% | +943+175.3% | Added |
| Kelly Financial Services LLC | 944 | $3.92K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 657 | $2.73K | 0.00% | +180+37.7% | Added |
| Daiwa Securities Group Inc. | 165 | $1.00K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 232 | $963 | 0.00% | −47,162−99.5% | Reduced |
| Advisor Group Holdings, Inc. | 200 | $830 | 0.00% | +200 | New |
| Wells Fargo & Company | 194 | $805 | 0.00% | −1,907−90.8% | Reduced |
| UBS Group AG | 100 | $415 | 0.00% | +100 | New |
| Royal Bank of Canada | 102 | $0 | 0.00% | −194−65.5% | Reduced |
| WMS Partners, LLC | 0 | $0 | 0.00% | −98,301−100.0% | Sold out |
| J. Goldman & Co LP | 0 | $0 | 0.00% | −62,986−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −60,504−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −32,800−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −31,100−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −30,222−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −14,663−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −13,116−100.0% | Sold out |
| Belvedere Trading LLC | 0 | $0 | 0.00% | −12,931−100.0% | Sold out |
| BIT Capital GmbH | 0 | $0 | 0.00% | −11,618−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −10,445−100.0% | Sold out |
| Federation des caisses Desjardins du Quebec | 0 | $0 | 0.00% | −892−100.0% | Sold out |