Amentum Holdings, Inc.

NYSE:AMTM Stock Report

Market Cap: US$6.1b

Amentum Holdings Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of AMTM?
Owner TypeNumber of SharesOwnership Percentage
Public Companies1000.0000411%
State or Government198,6350.0816%
General Public54,269,11722.3%
Private Companies90,021,80437%
Institutions98,812,51740.6%

Dilution of Shares: AMTM only recently listed within the past 12 months

Top Shareholders

Top 25 shareholders own 66.54% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
37%
Amentum Joint Venture LP
90,021,804US$2.3b0%no data
5.76%
The Vanguard Group, Inc.
14,013,274US$353.1m0%0.01%
3.66%
BlackRock, Inc.
8,915,088US$224.7m0%no data
3.01%
State Street Global Advisors, Inc.
7,327,308US$184.6m0%0.01%
2.68%
Invesco Capital Management LLC
6,510,385US$164.1m0%0.06%
2.17%
PRIMECAP Management Company
5,271,282US$132.8m0%0.1%
1.29%
Geode Capital Management, LLC
3,145,264US$79.3m0%0.01%
1.25%
Perpetual Limited
3,039,358US$76.6m0%0.21%
1.24%
Boston Partners Global Investors, Inc.
3,024,589US$76.2m0%0.05%
1.04%
Ruane, Cunniff & Goldfarb L.P.
2,530,489US$63.8m0%0.79%
1%
Allspring Global Investments, LLC
2,430,975US$61.3m0%0.09%
0.76%
Macquarie Investment Management Business Trust
1,842,362US$46.4m0%0.05%
0.64%
Ninety One UK Limited
1,558,896US$39.3m0%0.06%
0.53%
Invesco Ltd.
1,290,216US$32.5m0%0.01%
0.52%
Dimensional Fund Advisors LP
1,259,348US$31.7m0%no data
0.5%
Massachusetts Financial Services Company
1,228,298US$31.0m0%0.01%
0.47%
Simcoe Capital Management, LLC
1,153,105US$29.1m0%3.77%
0.45%
UBS Asset Management AG
1,100,731US$27.7m0%no data
0.4%
CI Global Asset Management
973,857US$24.5m0%0.05%
0.38%
Wellington Management Group LLP
935,078US$23.6m0%no data
0.38%
Deutsche Asset & Wealth Management
929,238US$23.4m0%0.01%
0.37%
Neuberger Berman Investment Advisers LLC
890,474US$22.4m0%0.02%
0.34%
Cooper Creek Partners Management LLC
837,670US$21.1m0%0.65%
0.34%
Mirae Asset Global Investments Co., Ltd.
832,025US$21.0m0%0.02%
0.34%
Legal & General Investment Management Limited
831,907US$21.0m0%no data