Acumen Pharmaceuticals (ABOS.US) Shareholders - Institutional Holders, Major Shareholders & Insiders | Longbridge

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Shareholder Type

Institutions34.81%
VC/PE firms34.17%
Public and others16.41%
Individuals & Insiders14.60%

Major Shareholders

Major Shareholders Latest
Shareholder
RA Capital Management, L.P.	29.03%	20.99M	0.04%	+0	06/30/2026
Sands Capital Alternatives, LLC	5.14%	3.72M	<0.01%	+0	06/30/2026
James Murray	4.99%	3.61M	1.48%	+1.07M	04/06/2026
Robert Hardie	4.77%	3.45M	<0.01%	+0	04/08/2025
Paul Manning	3.52%	2.55M	<0.01%	+0	04/08/2025
BlackRock, Inc.	3.44%	2.49M	3.20%	+2.31M	06/30/2026
Alyeska Investment Group, L.P.	3.39%	2.45M	<0.01%	+0	06/30/2026
Franklin Templeton Inc.	3.19%	2.31M	<0.01%	+0	06/30/2026
ADAR1 Capital Management, LLC	2.92%	2.11M	0.07%	-45.00K	06/30/2026
Vanguard Capital Management, LLC	2.71%	1.96M	0.35%	+257.81K	06/30/2026
Knollwood Investment Advisory, LLC	2.25%	1.63M	<0.01%	+0	06/30/2026
Sands Capital Management, LLC	1.58%	1.15M	<0.01%	+0	06/30/2025
Geode Capital Management, LLC	1.58%	1.14M	1.00%	+725.62K	06/30/2026
Ikarian Capital, LLC	1.46%	1.05M	<0.01%	+0	06/30/2026
Hudson Bay Capital Management LP	1.32%	955.00K	0.02%	-13.94K	06/30/2026
Pathstone Family Office, LLC	1.19%	859.11K	<0.01%	+0	06/30/2026
Renaissance Technologies LLC	0.93%	675.03K	0.28%	+201.08K	06/30/2026
Tiger Lily Capital	0.91%	657.99K	<0.01%	+0	04/08/2025
Two Sigma Investments, LP	0.86%	622.88K	0.13%	+92.07K	06/30/2026
State Street Investment Management	0.83%	600.53K	0.62%	+448.80K	06/30/2026