ACUMEN PHARMACEUTICALS INC ABOS
$2.74
+5.8% 52w: $1.11 – $3.37
Latest 13F among current holders filed 33 days ago (Jun 2, 2026)
Price — last 12 months
research preview data1.112.243.37
Jun 20, 2025 Jul 2, 2026
Institutional holders
84
+13 QoQ
13F value
$108.5M
+44.3% QoQ
Smart-money holders
4
signal tier ≥ 2
New smart buyers
1
Q1 2026
Options barometer
0.7×
$246K calls / $355K puts
Institutional value by quarter
Number of holders
Who owns ABOS?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. ★2 | Fundamental diversified | 21.0M | $49.5M | 0.5% | +40.6% |
| Sands Capital Alternatives, LLC ★3 | Fundamental concentrated | 3.7M | $8.8M | 2.1% | +8.9% |
| Alyeska Investment Group, L.P. | Quant stat arb | 2.5M | $5.8M | 0.0% | +161.3% |
| FRANKLIN RESOURCES INC | Long only active | 2.3M | $5.4M | 0.0% | Held |
| ADAR1 Capital Management, LLC | Other | 2.2M | $5.1M | 0.3% | +142.0% |
| Knollwood Investment Advisory, LLC | Other | 1.6M | $3.8M | 0.4% | Held |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 1.5M | $3.6M | 0.0% | — |
| FMR LLC | Long only active | 1.2M | $2.7M | 0.0% | -42.9% |
| Ikarian Capital, LLC ★2 | Fundamental diversified | 1.1M | $2.5M | 0.4% | +314.4% |
| Hudson Bay Capital Management LP | Multistrat pod | 968.9K | $2.3M | 0.0% | +33.6% |
| Pathstone Holdings, LLC | Diversified mechanical | 859.1K | $2.0M | 0.0% | Held |
| SG Americas Securities, LLC | Diversified mechanical | 719.3K | $1.7M | 0.0% | +79.3% |
| MILLENNIUM MANAGEMENT LLC | Multistrat pod | 659.7K | $1.6M | 0.0% | +12.9% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Market maker | 601.5K | $1.4M | 0.0% | +61.2% |
| TWO SIGMA INVESTMENTS, LP | Quant stat arb | 530.8K | $1.3M | 0.0% | +270.6% |
| Laurion Capital Management LP | Quant stat arb | 525.4K | $1.2M | 0.1% | -39.4% |
| RENAISSANCE TECHNOLOGIES LLC | Quant stat arb | 473.9K | $1.1M | 0.0% | +12.0% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 416.2K | $983K | 0.0% | +1.5% |
| BANK OF AMERICA CORP /DE/ | Bank broker | 320.2K | $756K | 0.0% | +33.3% |
| BOOTHBAY FUND MANAGEMENT, LLC | Diversified mechanical | 273.0K | $644K | 0.0% | +589.7% |
| GOLDMAN SACHS GROUP INC | Bank broker | 206.7K | $488K | 0.0% | +75.4% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 199.2K | $470K | 0.0% | — |
| MARSHALL WACE, LLP | Quant stat arb | 192.9K | $455K | 0.0% | +822.6% |
| ACADIAN ASSET MANAGEMENT LLC | Quant stat arb | 185.8K | $435K | 0.0% | +21.6% |
| BlackRock, Inc. | Index provider | 178.3K | $421K | 0.0% | +5.2% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Diversified mechanical | 176.2K | $416K | 0.0% | +3.5% |
| STATE STREET CORP | Index provider | 151.7K | $358K | 0.0% | +51.5% |
| MORGAN STANLEY | Bank broker | 144.6K | $341K | 0.0% | -13.4% |
| Qube Research & Technologies Ltd | Quant stat arb | 120.4K | $284K | 0.0% | +150.9% |
| DIMENSIONAL FUND ADVISORS LP | Quant stat arb | 119.8K | $282K | 0.0% | +144.1% |
| CATALYST FINANCIAL PARTNERS LLC | Wealth advisor | 89.7K | $212K | 0.0% | Held |
| JANE STREET GROUP, LLC | Market maker | 89.7K | $212K | 0.0% | -36.9% |
| PFG Investments, LLC | Diversified mechanical | 80.8K | $191K | 0.0% | +325.5% |
| NORTHERN TRUST CORP | Index provider | 75.2K | $178K | 0.0% | Held |
| Point72 Asset Management, L.P. | Multistrat pod | 67.4K | $159K | 0.0% | +85.3% |
| Prospera Financial Services Inc | Diversified mechanical | 50.0K | $118K | 0.0% | Held |
| Catalyst Funds Management Pty Ltd | Quant stat arb | 45.6K | $108K | 0.0% | +54.1% |
| Verdad Advisers, LP | Quant stat arb | 37.3K | $88K | 0.1% | New |
| UBS Group AG | Bank broker | 37.1K | $88K | 0.0% | +72.3% |
| Rangeley Capital, LLC ★2 | Fundamental diversified | 35.0K | $83K | 0.1% | New |
| BARCLAYS PLC | Bank broker | 30.7K | $72K | 0.0% | +2.3% |
| Intrepid Financial Planning Group LLC | Wealth advisor | 30.1K | $71K | 0.0% | Held |
| OMERS ADMINISTRATION Corp | Other | 28.6K | $67K | 0.0% | +27.4% |
| AXQ CAPITAL, LP | Quant stat arb | 28.5K | $67K | 0.0% | New |
| Independent Advisor Alliance | Wealth advisor | 19.0K | $45K | 0.0% | Held |
| Pinnacle Wealth Management Advisory Group, LLC | Wealth advisor | 18.0K | $43K | 0.0% | Held |
| PINNACLE ASSOCIATES LTD | Other | 18.0K | $43K | 0.0% | Held |
| AMERICAN CENTURY COMPANIES INC | Diversified mechanical | 17.9K | $42K | 0.0% | New |
| SIMPLEX TRADING, LLC | Market maker | 17.4K | $41K | 0.0% | New |
| Factor Wealth Management LTD | Wealth advisor | 16.5K | $39K | 0.0% | Held |
Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.
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