ACUMEN PHARMACEUTICALS INC (ABOS): Institutional Ownership
Hedge funds and institutional managers reporting a position in ABOS. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
10
13F filers
Aggregate Value
$5.2M
Across holders
Last Price
$2.36
2026-06-26
Sector
—
GICS
Holder activity4 new4 added2 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| Hudson Bay Capital Management LP CIK 0001393825 | Hedge Fund | 900K | $2.1M | 40.7% | 0.0% | Added | +$413K | Q1 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 531K | $1.3M | 24.0% | 0.0% | Added | +$915K | Q1 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 474K | $1.1M | 21.4% | 0.0% | Added | +$120K | Q1 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 120K | $284K | 5.4% | 0.0% | Added | +$171K | Q1 2026 |
| BALYASNY ASSET MANAGEMENT LLC CIK 0001218710 | Hedge Fund | 64K | $259K | 5.0% | 0.0% | New | — | Q1 2024 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 45K | $52K | 1.0% | 0.0% | New | — | Q2 2025 |
| Brevan Howard Capital Management LP CIK 0001512857 | Hedge Fund | 15K | $36K | 0.7% | 0.0% | New | — | Q1 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 14K | $33K | 0.6% | 0.0% | Reduced | $-3K | Q1 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 12K | $28K | 0.5% | 0.0% | Reduced | $-787K | Q1 2026 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 11K | $27K | 0.5% | 0.0% | New | — | Q1 2026 |
Added
Hedge Fund
$2.1M· 40.7% of total· 0.0% port· 900K sh· +$413K QoQ· Q1 2026
Added
Hedge Fund
$1.3M· 24.0% of total· 0.0% port· 531K sh· +$915K QoQ· Q1 2026
Added
Hedge Fund
$1.1M· 21.4% of total· 0.0% port· 474K sh· +$120K QoQ· Q1 2026
Added
Hedge Fund
$284K· 5.4% of total· 0.0% port· 120K sh· +$171K QoQ· Q1 2026
New
Hedge Fund
$259K· 5.0% of total· 0.0% port· 64K sh· — QoQ· Q1 2024
New
Hedge Fund
$52K· 1.0% of total· 0.0% port· 45K sh· — QoQ· Q2 2025
New
Hedge Fund
$36K· 0.7% of total· 0.0% port· 15K sh· — QoQ· Q1 2026
Reduced
Hedge Fund
$33K· 0.6% of total· 0.0% port· 14K sh· $-3K QoQ· Q1 2026
Reduced
Hedge Fund
$28K· 0.5% of total· 0.0% port· 12K sh· $-787K QoQ· Q1 2026
New
Hedge Fund
$27K· 0.5% of total· 0.0% port· 11K sh· — QoQ· Q1 2026