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Acumen Pharmaceuticals Inc
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2.920USD
+0.060+2.10%
Close 09-11 16:00（ET）
211.88MMarket Cap
LossP/E TTM
Shareholding Stats
Updated: Sun, May 10
Updated: Sun, May 10
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
RA Capital Management, LP
29.06%
Sands Capital Ventures LLC
5.15%
Murray (James B Jr)
5.00%
Franklin Advisers, Inc.
3.19%
Fidelity Management & Research Company LLC
2.81%
Other
54.79%
Shareholders
Shareholders
Proportion
RA Capital Management, LP
29.06%
Sands Capital Ventures LLC
5.15%
Murray (James B Jr)
5.00%
Franklin Advisers, Inc.
3.19%
Fidelity Management & Research Company LLC
2.81%
Other
54.79%
Shareholder Types
Shareholders
Proportion
Venture Capital
29.13%
Hedge Fund
13.20%
Investment Advisor
9.39%
Individual Investor
7.21%
Investment Advisor/Hedge Fund
4.55%
Research Firm
1.76%
Family Office
1.19%
Pension Fund
0.03%
Other
33.53%
Institutional Shareholding
Updated: Sun, Apr 5
Updated: Sun, Apr 5
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2026Q1
203
45.02M
62.34%
+690.04K
2025Q4
199
38.36M
75.58%
+1.31K
2025Q3
212
38.36M
86.56%
-1.67M
2025Q2
207
40.04M
89.95%
-2.61M
2025Q1
203
42.60M
94.64%
-14.73M
2024Q4
201
45.35M
96.41%
-1.28M
2024Q3
199
46.63M
96.70%
+13.53K
2024Q2
193
46.57M
93.52%
+237.54K
2024Q1
196
46.31M
88.00%
-6.56M
2023Q4
185
41.32M
89.57%
-4.83M
View more
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
RA Capital Management, LP
20.99M
29.07%
+6.06M
+40.59%
Mar 16, 2026
Sands Capital Ventures LLC
3.42M
4.73%
--
--
Dec 31, 2025
Franklin Advisers, Inc.
2.31M
3.19%
--
--
Dec 31, 2025
Fidelity Management & Research Company LLC
2.03M
2.81%
-1.83K
-0.09%
Dec 31, 2025
Knollwood Investment Advisory, LLC
1.63M
2.26%
--
--
Dec 31, 2025
Alyeska Investment Group, L.P.
939.60K
1.3%
--
--
Dec 31, 2025
Adar1 Capital Management LLC
891.18K
1.23%
--
--
Dec 31, 2025
Laurion Capital Management LP
867.05K
1.2%
--
--
Dec 31, 2025
View more
Related ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
iShares Micro-Cap ETF
0.02%
ProShares Hedge Replication ETF
0%
Avantis US Small Cap Equity ETF
0%
Proshares Ultra Russell 2000
0%
iShares Russell 2000 ETF
0%
iShares Russell 2000 Value ETF
0%
ProShares UltraPro Russell2000
0%
Global X Russell 2000 ETF
0%
iShares Neuroscience and Healthcare ETF
0%
iShares Micro-Cap ETF
Proportion0.02%
ProShares Hedge Replication ETF
Proportion0%
Avantis US Small Cap Equity ETF
Proportion0%
Proshares Ultra Russell 2000
Proportion0%
iShares Russell 2000 ETF
Proportion0%
iShares Russell 2000 Value ETF
Proportion0%
ProShares UltraPro Russell2000
Proportion0%
Global X Russell 2000 ETF
Proportion0%
iShares Neuroscience and Healthcare ETF
Proportion0%