Institutional Ownership Acumen Pharmaceuticals, Inc. (ABOS)
This table provides information about the institutional ownership of Acumen Pharmaceuticals, Inc. (ABOS). We have compiled data on the 72 institutions that hold shares in the stock, with a total of 36.2 Million shares, which have been reported (via 13F filing form) to have a value of $64.5 Million.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Ra Capital Management, L.P.
Boston, MA |
Nov 14, 2025 Q3 2025 |
14,932,063
shares
|
$26.6 Million
0.46% of portfolio
|
Q2 2024
New holding
|
|
|
Sands Capital Ventures, LLC
Arlington, VA |
Nov 13, 2025 Q3 2025 |
3,417,075
shares
|
$6.08 Million
2.33% of portfolio
|
Q3 2021
New holding
|
|
|
Franklin Resources Inc
San Mateo, CA |
Nov 13, 2025 Q3 2025 |
2,305,096
shares
|
$4.1 Million
0.0% of portfolio
|
Q3 2025
Reduced 25.09%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
2,158,661
shares
|
$3.84 Million
0.0% of portfolio
|
Q2 2024
Added 1037.95%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
Nov 07, 2025 Q3 2025 |
1,651,472
shares
|
$2.94 Million
0.0% of portfolio
|
Q3 2025
Reduced 2.24%
|
|
|
Knollwood Investment Advisory, LLC
Hunt Valley, MD |
Nov 13, 2025 Q3 2025 |
1,628,510
shares
|
$2.9 Million
0.25% of portfolio
|
Q3 2023
Reduced 2.98%
|
|
|
Alyeska Investment Group, L.P.
Chicago, IL |
Nov 14, 2025 Q3 2025 |
939,603
shares
|
$1.67 Million
0.01% of portfolio
|
Q1 2024
Added 28.15%
|
|
|
Adar1 Capital Management, LLC
Austin, TX |
Nov 14, 2025 Q3 2025 |
891,183
shares
|
$1.59 Million
0.14% of portfolio
|
Q3 2025
Reduced 2.73%
|
|
|
Laurion Capital Management LP
New York, NY |
Nov 14, 2025 Q3 2025 |
867,046
shares
|
$1.54 Million
0.03% of portfolio
|
Q3 2024
Reduced 26.42%
|
|
|
Pathstone Holdings, LLC
Englewood, NJ |
Nov 13, 2025 Q3 2025 |
859,110
shares
|
$1.53 Million
0.01% of portfolio
|
Q3 2025
Reduced 18.84%
|
|
|
Hudson Bay Capital Management LP
Greenwich, CT |
Dec 15, 2025 Q3 2025 |
725,004
shares
|
$1.29 Million
0.01% of portfolio
|
Q3 2025
Reduced 12.12%
|
|
|
Israel Englander
Millennium Management LLC | New York, Ny
|
Nov 14, 2025 Q3 2025 |
601,716
shares
|
$1.07 Million
0.0% of portfolio
|
Q3 2025
Reduced 69.14%
|
|
|
Jim Simons
Renaissance Technologies LLC | New York, Ny
|
Nov 13, 2025 Q3 2025 |
584,292
shares
|
$1.04 Million
0.0% of portfolio
|
Q3 2025
Added 136.95%
|
|
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
Nov 14, 2025 Q3 2025 |
494,108
shares
|
$879,512
0.0% of portfolio
|
Q3 2025
New holding
|
|
|
Pathstone Family Office, LLC
Englewood, NJ |
Nov 08, 2023 Q3 2023 |
478,790
shares
|
$852,246
0.01% of portfolio
|
Q2 2023
Reduced 2.45%
|
|
|
David A. Siegel
Two Sigma Advisers, LP | New York, Ny
|
Nov 14, 2025 Q3 2025 |
423,600
shares
|
$754,008
0.0% of portfolio
|
Q3 2025
Reduced 0.63%
|
|
|
Sg Americas Securities, LLC
|
Oct 23, 2025 Q3 2025 |
403,878
shares
|
$718,902
0.0% of portfolio
|
Q3 2025
New holding
|
|
|
Geode Capital Management, LLC
Boston, MA |
Nov 12, 2025 Q3 2025 |
398,778
shares
|
$709,824
0.0% of portfolio
|
Q3 2025
Added 0.54%
|
|
|
Ikarian Capital, LLC
Dallas, TX |
Nov 14, 2025 Q3 2025 |
265,769
shares
|
$473,068
0.07% of portfolio
|
Q4 2024
Reduced 0.25%
|
|
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
Nov 14, 2025 Q3 2025 |
214,440
shares
|
$381,703
0.0% of portfolio
|
Q3 2025
Added 40.77%
|
|
|
Bank Of America Corp
Charlotte, NC |
Nov 14, 2025 Q3 2025 |
213,729
shares
|
$380,437
0.0% of portfolio
|
Q3 2025
Added 45.38%
|
|
|
Jane Street Group, LLC
New York, NY |
Nov 13, 2025 Q3 2025 |
207,239
shares
|
$368,885
0.0% of portfolio
|
Q3 2025
Added 17.97%
|
|
|
Two Sigma Investments, LP
New York, NY |
Nov 14, 2025 Q3 2025 |
199,446
shares
|
$355,013
0.0% of portfolio
|
Q3 2025
Reduced 0.67%
|
|
|
Bridgeway Capital Management, LLC
Houston, TX |
Nov 14, 2025 Q3 2025 |
190,171
shares
|
$338,504
0.01% of portfolio
|
Q3 2025
Added 65.12%
|
|
|
Morgan Stanley
New York, NY |
Nov 14, 2025 Q3 2025 |
149,401
shares
|
$265,933
0.0% of portfolio
|
Q3 2025
Reduced 2.83%
|
|