Amentum (AMTM.US) Shareholders - Institutional Holders, Major Shareholders & Insiders | Longbridge

Shareholder Type

Institutions64.88%
VC/PE firms34.38%
Individuals & Insiders0.69%
State-owned enterprises0.05%
Private companies<0.01%

Major Shareholders

Major Shareholders Latest
Shareholder
American Securities LLC	18.42%	45.03M	0.04%	+0	06/30/2026
Lindsay Goldberg LLC	18.42%	45.03M	0.04%	+0	11/30/2025
Invesco Ltd.	8.75%	21.40M	1.29%	+3.19M	06/30/2026
BlackRock, Inc.	7.32%	17.91M	<0.01%	+65.70K	06/30/2026
PRIMECAP Management Company	5.02%	12.29M	0.07%	+200.21K	06/30/2026
Vanguard Portfolio Management, LLC	3.25%	7.95M	0.03%	+95.43K	06/30/2026
Vanguard Capital Management, LLC	3.14%	7.68M	0.03%	+82.10K	06/30/2026
FMR LLC	2.30%	5.62M	0.04%	+106.98K	06/30/2026
Dimensional Fund Advisors LP	2.26%	5.54M	0.71%	+1.75M	06/30/2026
State Street Investment Management	2.11%	5.15M	0.02%	+72.73K	06/30/2026
Frontier Capital Management Co LLC	1.69%	4.14M	0.33%	-786.24K	06/30/2026
Troluce Capital Advisors, LLC	1.46%	3.57M	1.05%	+2.57M	06/30/2026
Invesco Capital Management LLC	1.45%	3.55M	0.12%	+290.11K	06/30/2026
Geode Capital Management, LLC	1.11%	2.72M	0.04%	-97.86K	06/30/2026
Mirae Asset Global Investments Co., Ltd.	0.95%	2.32M	0.19%	-466.55K	06/30/2026
Thompson, Siegel & Walmsley LLC	0.93%	2.28M	0.31%	+756.06K	06/30/2026
Millennium Management LLC	0.87%	2.13M	0.61%	+1.50M	06/30/2026
Charles Schwab Investment Management, Inc.	0.87%	2.12M	0.02%	+52.16K	06/30/2026
Thrivent Investment Management Inc.	0.86%	2.11M	<0.01%	+5.35K	06/30/2026
Segra Capital Management, LLC	0.83%	2.04M	0.17%	+425.16K	06/30/2026