Security key
00509G209
Acumen Pharmaceuticals, Inc. - Common Stock, $0.0001 par value per share (ABOS)
CUSIP: 00509G209
Q2 2025 13F Holders as of 30 Jun 2025
- Type / Class
- Equity / Common Stock, $0.0001 par value per share
- Shares outstanding
- 72,227,200
- Total 13F shares
- 37,585,884
- Share change
- -1,849,867
- Total reported value
- $43,599,129
- Put/Call ratio
- 0%
- Price per share
- $1.16
- Number of holders
- 69
- Value change
- -$2,103,479
- Number of buys
- 31
- Number of sells
- 47
Report period
Q2 2025
Institutions
69
Top holders
10
ABOS full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
Previous quarter: Q1 2025
Acumen Pharmaceuticals, Inc. SEC filings
Acumen Pharmaceuticals, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 00509G209
Recent filing periods:
Ownership snapshot
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. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Lead holder
Sands Capital Alternative...
13D/G signal
Sands Capital Alternative...
Evidence rows
50
Latest as of
30 Jun 2025
13D/G
13F
Lead comparable stake: 5.6%
13D/G row: Sands Capital Alternatives, LLC
Showing first 8 of 50 holder rows.
Open remaining rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Sands Capital Alternatives, LLC |
13D/G
13F
Company
|
5.6%
|
$3,861,295
3,417,075 shares
|
$0 | 30 Jun 2025 |
| James B. Murray Jr. |
13D/G
|
5%
|
$9,425,650
3,611,360 shares
|
$0 | 04 Apr 2025 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
21%
|
$16,425,269
14,932,063 shares
|
— | 31 Mar 2025 |
| FRANKLIN RESOURCES INC |
13F
Company
|
4.4%
|
$3,456,133
3,141,939 shares
|
— | 31 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
3.2%
|
$2,564,155
2,331,049 shares
|
— | 31 Mar 2025 |
| FMR LLC |
13F
Company
|
2.8%
|
$2,228,185
2,025,623 shares
|
— | 31 Mar 2025 |
| VANGUARD GROUP INC |
13F
Company
|
2.7%
|
$2,130,690
1,936,991 shares
|
— | 31 Mar 2025 |
| Knollwood Investment Advisory, LLC |
13F
Company
|
2.3%
|
$1,791,361
1,628,510 shares
|
— | 31 Mar 2025 |
How to read this table
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.
13F holder rows
Institutional holders as of Q2 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
69
Shares
37,585,884
Rows loaded
70
| Investor | Option | Weight % | Change % | Reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. An asterisk next to the price means the price is likely invalid.
Compare Q2 2025 vs Q1 2025 Across Filers
Q1 2025 holders
79
Q2 2025 holders
69
Holder diff
-10
| Investor | Q1 2025 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q2 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend