FundFollowerFundFollower
Super FundsTop AssetsActivityPortfoliosArticlesAbout

Get the FundFollower newsletter

13F-season insights and notable moves. No spam — unsubscribe anytime.

© 2025 FundFollower. All rights reserved.

Data sourced from public SEC filings.

HomeContact UsSuper FundsTop AssetsAbout

Amentum Holdings Inc.

AMTM

1 institutional investors and hedge funds own AMTM, holding 1,622,982 shares worth $42.3M (latest 13F filings).

Advanced Chart

Who owns Amentum Holdings Inc. stock?

Institutional holders of AMTM — largest position first.

Super Fund
Position
Shares
Curr. Value
Port. %
Activity
Ruane Cunniff & Goldfarb (Sequoia)Equity
1,622,982
$42,327,370
0.70%
-32.21%

Ownership Statistics

Total Shares Held: 1,622,982
Total Value Reported: $42,327,370
Average Allocation per Portfolio 0.70%
Largest Single Portfolio Allocation: 0.70%
Largest Shareholder: Ruane Cunniff & Goldfarb (Sequoia)
Change in Total Shares Held (Q on Q): -771,147
Percentage Change in Shares Held (Q on Q): -32.21%
Number of Super Fund Holders: 1
Number of New Holders (Q on Q): 0
Number of Funds with Additions (Q on Q): 0
Number of Funds with Reductions (Q on Q): 1
Number of Funds Fully Divested (Q on Q): 0
Number of Funds with No Change (Q on Q): 0

Ownership Distribution

Loading chart…

Ownership History

Loading chart…

Company Profile

Fundamental Data