Security key
00509G209
Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (ABOS)
CUSIP: 00509G209
Q4 2025 13F Holders as of 31 Dec 2025
- Type / Class
- Equity / Common Stock, $0.0001 par value per share
- Shares outstanding
- 72,227,200
- Total 13F shares
- 35,659,733
- Share change
- -32,682
- Total reported value
- $75,239,476
- Price per share
- $2.11
- Number of holders
- 70
- Value change
- -$34,280
- Number of buys
- 25
- Number of sells
- 30
Report period
Q4 2025
Institutions
70
Top holders
10
ABOS full security history
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Acumen Pharmaceuticals, Inc. SEC filings
Acumen Pharmaceuticals, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 00509G209
Recent filing periods:
Top shareholders of ABOS - Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Sands Capital Alternatives, LLC |
13F
13D/G
|
Company |
5.6%
from 13D/G
|
3,417,075
|
$5,843,198 | — | 30 Sep 2025 | |
| James B. Murray Jr. |
13D/G
|
— |
5%
|
3,611,360
|
$9,425,650 | $0 | 04 Apr 2025 | |
| FRANKLIN RESOURCES INC |
13D/G
13F
|
Company |
3.8%
|
2,305,096
|
$3,941,714 | $0 | 30 Sep 2025 | |
| RA CAPITAL MANAGEMENT, L.P. |
13F
|
Company |
21%
|
14,932,063
|
$25,533,828 | — | 30 Sep 2025 | |
| FMR LLC |
13F
|
Company |
2.8%
|
2,029,325
|
$3,470,146 | — | 30 Sep 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
2.3%
|
1,651,472
|
$2,824,017 | — | 30 Sep 2025 | |
| Knollwood Investment Advisory, LLC |
13F
|
Company |
2.3%
|
1,628,510
|
$2,784,752 | — | 30 Sep 2025 | |
| Alyeska Investment Group, L.P. |
13F
|
Company |
1.3%
|
939,603
|
$1,606,721 | — | 30 Sep 2025 | |
| ADAR1 Capital Management, LLC |
13F
|
Company |
1.2%
|
891,183
|
$1,523,923 | — | 30 Sep 2025 | |
| Laurion Capital Management LP |
13F
|
Company |
1.2%
|
867,046
|
$1,482,649 | — | 30 Sep 2025 | |
| Pathstone Holdings, LLC |
13F
|
Company |
1.2%
|
859,110
|
$1,469,078 | — | 30 Sep 2025 | |
| Hudson Bay Capital Management LP |
13F
|
Company |
1%
|
725,004
|
$1,239,757 | — | 30 Sep 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.83%
|
601,716
|
$1,028,934 | — | 30 Sep 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.81%
|
584,292
|
$999,139 | — | 30 Sep 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.68%
|
494,108
|
$844,925 | — | 30 Sep 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.59%
|
423,600
|
$724,356 | — | 30 Sep 2025 | |
| SG Americas Securities, LLC |
13F
|
Company |
0.56%
|
403,878
|
$691,000 | — | 30 Sep 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.55%
|
398,778
|
$682,039 | — | 30 Sep 2025 | |
| Ikarian Capital, LLC |
13F
|
Company |
0.37%
|
265,769
|
$454,465 | — | 30 Sep 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.3%
|
214,440
|
$366,693 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.3%
|
213,729
|
$365,477 | — | 30 Sep 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.29%
|
207,239
|
$354,379 | — | 30 Sep 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.28%
|
199,446
|
$341,053 | — | 30 Sep 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.26%
|
190,171
|
$325,192 | — | 30 Sep 2025 | |
| BlackRock, Inc. |
13F
|
Company |
0.24%
|
174,690
|
$298,719 | — | 30 Sep 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.21%
|
149,401
|
$255,476 | — | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.2%
|
147,148
|
$251,623 | — | 30 Sep 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.15%
|
106,678
|
$182,419 | — | 30 Sep 2025 | |
| CATALYST FINANCIAL PARTNERS LLC |
13F
|
Company |
0.12%
|
89,699
|
$153,385 | — | 30 Sep 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.11%
|
77,920
|
$131,000 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.09%
|
64,954
|
$111,071 | — | 30 Sep 2025 | |
| BOOTHBAY FUND MANAGEMENT, LLC |
13F
|
Company |
0.07%
|
51,042
|
$87,282 | — | 30 Sep 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.06%
|
43,524
|
$74,426 | — | 30 Sep 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.05%
|
32,881
|
$56,227 | — | 30 Sep 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.04%
|
32,103
|
$55,000 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
0.04%
|
30,841
|
$52,738 | — | 30 Sep 2025 | |
| Intrepid Financial Planning Group LLC |
13F
|
Company |
0.04%
|
30,150
|
$51,557 | — | 30 Sep 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.04%
|
29,991
|
$51,285 | — | 30 Sep 2025 | |
| Catalyst Funds Management Pty Ltd |
13F
|
Company |
0.04%
|
29,600
|
$50,616 | — | 30 Sep 2025 | |
| Cubist Systematic Strategies, LLC |
13F
|
Company |
0.03%
|
23,904
|
$40,876 | — | 30 Sep 2025 | |
| PINNACLE ASSOCIATES LTD |
13F
|
Company |
0.02%
|
18,020
|
$30,814 | — | 30 Sep 2025 | |
| Pinnacle Wealth Management Advisory Group, LLC |
13F
|
Company |
0.02%
|
18,020
|
$30,814 | — | 30 Sep 2025 | |
| Factor Wealth Management LTD |
13F
|
Company |
0.02%
|
16,500
|
$28,215 | — | 30 Sep 2025 | |
| Point72 Asia (Singapore) Pte. Ltd. |
13F
|
Company |
0.02%
|
16,044
|
$27,435 | — | 30 Sep 2025 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
0.02%
|
16,001
|
$27,362 | — | 30 Sep 2025 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.02%
|
14,014
|
$23,000 | — | 30 Sep 2025 | |
| PFG Investments, LLC |
13F
|
Company |
0.02%
|
11,500
|
$19,665 | — | 30 Sep 2025 | |
| Savant Capital, LLC |
13F
|
Company |
0.02%
|
11,045
|
$18,887 | — | 30 Sep 2025 | |
| Integrated Wealth Concepts LLC |
13F
|
Company |
0.01%
|
10,179
|
$17,406 | — | 30 Sep 2025 | |
| GROUP ONE TRADING LLC |
13F
|
Company |
0.01%
|
7,798
|
$13,335 | — | 30 Sep 2025 |
Institutional Holders of Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (ABOS) as of Q4 2025
As of 31 Dec 2025,
Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (ABOS) was held by
70 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
35,659,733 shares.
The largest 10 holders included
RA CAPITAL MANAGEMENT, L.P., Sands Capital Alternatives, LLC, FRANKLIN RESOURCES INC, FMR LLC, VANGUARD GROUP INC, Knollwood Investment Advisory, LLC, Alyeska Investment Group, L.P., ADAR1 Capital Management, LLC, Laurion Capital Management LP, and Pathstone Holdings, LLC.
This page lists
70
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
68
Q4 2025 holders
70
Holder diff
2
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.