Amentum Holdings Inc
AMTM28.680USD
+0.010+0.03%
Close 12/18, 16:00（ET）Quotes delayed by 15 min
6.98BMarket Cap
105.60P/E TTM
More Details of Amentum Holdings Inc Company
Amentum Holdings, Inc. is a global advanced engineering and technology solutions provider to a broad base of the United States and allied government agencies, supporting programs of critical national importance across energy and environmental, intelligence, space, defense, civilian and commercial end-markets. It offers a range of capabilities, including intelligence and counter-threat solutions, data fusion and analytics, engineering and integration, environmental solutions, advanced test, training and readiness, and citizen solutions. Its segments include Digital Solutions (DS) and Global Engineering Solutions (GES). The DS segment offers advanced digital and data-driven solutions including intelligence analytics, space system development, cybersecurity, and next-generation information technology for the federal government and commercial clients. The GES segment offers large-scale environmental remediation, clean energy, platform engineering, sustainment and supply chain management.
Amentum Holdings Inc Info
Ticker SymbolAMTM
Company nameAmentum Holdings Inc
IPO dateSep 24, 2024
CEOHeller (John E)
Number of employees50000
Security typeOrdinary Share
Fiscal year-endSep 24
Address4800 Westfields Boulevard
CityCHANTILLY
Stock exchangeNASDAQ OMX NASDAQ Basic NYSE
CountryUnited States of America
Postal code20151
Phone17035790410
Website
Ticker SymbolAMTM
IPO dateSep 24, 2024
CEOHeller (John E)
Company Executives of Amentum Holdings Inc
Name
Name/Position
Position
Shareholding
Change
Mr. Steven J. (Steve) Demetriou
Mr. Steven J. (Steve) Demetriou
Executive Chairman of the Board
Executive Chairman of the Board
978.15K
+25.63%
Mr. John E. Heller
Mr. John E. Heller
Chief Executive Officer, Director
Chief Executive Officer, Director
269.44K
+193.53%
Mr. Travis Barton Johnson
Mr. Travis Barton Johnson
Chief Financial Officer
Chief Financial Officer
108.67K
--
Mr. Stephen A. (Steve) Arnette
Mr. Stephen A. (Steve) Arnette
Chief Operating Officer
Chief Operating Officer
93.72K
+325.64%
Retd. Gen. Vincent K. (Vince) Brooks
Retd. Gen. Vincent K. (Vince) Brooks
Independent Director
Independent Director
10.41K
+49.48%
Ms. Sandra E. Rowland
Ms. Sandra E. Rowland
Independent Director
Independent Director
3.45K
--
Ms. S. Leslie Ireland
Ms. S. Leslie Ireland
Independent Director
Independent Director
--
--
Mr. John C. Vollmer
Mr. John C. Vollmer
Independent Director
Independent Director
--
--
Mr. Connor Wentzell
Mr. Connor Wentzell
Independent Director
Independent Director
--
--
Gen. Ralph Edward (Ed) Eberhart
Gen. Ralph Edward (Ed) Eberhart
Independent Director
Independent Director
--
--
View more
Name
Name/Position
Position
Shareholding
Change
Mr. Steven J. (Steve) Demetriou
Mr. Steven J. (Steve) Demetriou
Executive Chairman of the Board
Executive Chairman of the Board
978.15K
+25.63%
Mr. John E. Heller
Mr. John E. Heller
Chief Executive Officer, Director
Chief Executive Officer, Director
269.44K
+193.53%
Mr. Travis Barton Johnson
Mr. Travis Barton Johnson
Chief Financial Officer
Chief Financial Officer
108.67K
--
Mr. Stephen A. (Steve) Arnette
Mr. Stephen A. (Steve) Arnette
Chief Operating Officer
Chief Operating Officer
93.72K
+325.64%
Retd. Gen. Vincent K. (Vince) Brooks
Retd. Gen. Vincent K. (Vince) Brooks
Independent Director
Independent Director
10.41K
+49.48%
Ms. Sandra E. Rowland
Ms. Sandra E. Rowland
Independent Director
Independent Director
3.45K
--
Revenue Breakdown
Currency: USDUpdated: Mon, Oct 6
Currency: USDUpdated: Mon, Oct 6
FY2025Q3
FY2025Q2
FY2025Q1
FY2024
FY2024Q4
FY2024Q3
FY2024Q2
FY2024Q1
FY2023
FY2023Q4
FY2023Q3
FY2023Q2
FY2023Q1
FY2022
FY2021
By BusinessUSD
Name
Revenue
Proportion
Prime contractor
3.20B
89.78%
Subcontractor
364.00M
10.22%
By RegionUSD
Name
Revenue
Proportion
United States
2.69B
75.46%
International
874.00M
24.54%
By Business
By Region
By BusinessUSD
Name
Revenue
Proportion
Prime contractor
3.20B
89.78%
Subcontractor
364.00M
10.22%
Shareholding Stats
Updated: Sun, Nov 16
Updated: Sun, Nov 16
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
American Securities LLC
18.48%
Goldberg Lindsay & Co., LLC
18.48%
BlackRock Institutional Trust Company, N.A.
6.64%
The Vanguard Group, Inc.
6.37%
PRIMECAP Management Company
4.89%
Other
45.13%
Shareholders
Shareholders
Proportion
American Securities LLC
18.48%
Goldberg Lindsay & Co., LLC
18.48%
BlackRock Institutional Trust Company, N.A.
6.64%
The Vanguard Group, Inc.
6.37%
PRIMECAP Management Company
4.89%
Other
45.13%
Shareholder Types
Shareholders
Proportion
Investment Advisor
40.86%
Private Equity
36.97%
Investment Advisor/Hedge Fund
14.39%
Hedge Fund
5.29%
Pension Fund
1.18%
Research Firm
0.94%
Sovereign Wealth Fund
0.89%
Individual Investor
0.82%
Bank and Trust
0.42%
Institutional Shareholding
Updated: Mon, Dec 8
Updated: Mon, Dec 8
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2025Q4
1079
246.01M
110.29%
-194.29K
2025Q3
1079
246.21M
110.41%
-4.74M
2025Q2
1026
250.36M
107.17%
+10.20M
2025Q1
936
239.97M
76.11%
+54.78M
2024Q4
868
211.64M
42.54%
+108.10M
2024Q3
675
102.03M
0.00%
+102.03M
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
American Securities LLC
45.03M
18.5%
+1.13M
+2.58%
Jun 30, 2025
Goldberg Lindsay & Co., LLC
45.03M
18.5%
+1.13M
+2.58%
May 08, 2025
BlackRock Institutional Trust Company, N.A.
16.14M
6.63%
+554.16K
+3.56%
Jun 30, 2025
The Vanguard Group, Inc.
16.50M
6.78%
+185.95K
+1.14%
Jun 30, 2025
PRIMECAP Management Company
12.03M
4.94%
+1.97M
+19.57%
Jun 30, 2025
INVESCO Asset Management (Japan) Ltd.
8.87M
3.64%
+1.21M
+15.78%
Jun 30, 2025
State Street Investment Management (US)
7.08M
2.91%
+501.90K
+7.63%
Jun 30, 2025
Invesco Advisers, Inc.
6.23M
2.56%
+981.60K
+18.71%
Jun 30, 2025
Fidelity Management & Research Company LLC
4.34M
1.78%
+162.78K
+3.90%
Jun 30, 2025
Frontier Capital Management Company, LLC
5.46M
2.24%
+1.88M
+52.59%
Jun 30, 2025
View more
Related ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
Invesco S&P Spin-Off ETF
3.69%
Invesco S&P SmallCap Industrials ETF
1.31%
Invesco S&P SmallCap 600 Revenue ETF
1.1%
Range Nuclear Renaissance Index ETF
1.01%
Global X Defense Tech ETF
0.86%
First Trust Industrials/Producer Durables AlphaDEX Fund
0.63%
iShares S&P Small-Cap 600 Value ETF
0.61%
State Street SPDR S&P 600 Small Cap Value ETF
0.47%
Invesco Aerospace & Defense ETF
0.37%
Invesco S&P SmallCap 600 QVM Multi-factor ETF
0.36%
View more
Invesco S&P Spin-Off ETF
Proportion3.69%
Invesco S&P SmallCap Industrials ETF
Proportion1.31%
Invesco S&P SmallCap 600 Revenue ETF
Proportion1.1%
Range Nuclear Renaissance Index ETF
Proportion1.01%
Global X Defense Tech ETF
Proportion0.86%
First Trust Industrials/Producer Durables AlphaDEX Fund
Proportion0.63%
iShares S&P Small-Cap 600 Value ETF
Proportion0.61%
State Street SPDR S&P 600 Small Cap Value ETF
Proportion0.47%
Invesco Aerospace & Defense ETF
Proportion0.37%
Invesco S&P SmallCap 600 QVM Multi-factor ETF
Proportion0.36%
Dividend
A total of
0.00
USD has been distributed in dividends over the past 5 years.
Date
Dividend
Record Date
Payment Date
Ex-dividend Date
No Data
Stock Split
Date
Type
Ratio
No Data
Date
Type
Ratio
No Data
FAQs
Who are the top five shareholders of Amentum Holdings Inc?
The top five shareholders of Amentum Holdings Inc are:
American Securities LLC holds 45.03M shares, accounting for 18.50% of the total shares.
Goldberg Lindsay & Co., LLC holds 45.03M shares, accounting for 18.50% of the total shares.
BlackRock Institutional Trust Company, N.A. holds 16.14M shares, accounting for 6.63% of the total shares.
The Vanguard Group, Inc. holds 16.50M shares, accounting for 6.78% of the total shares.
PRIMECAP Management Company holds 12.03M shares, accounting for 4.94% of the total shares.
American Securities LLC holds 45.03M shares, accounting for 18.50% of the total shares.
Goldberg Lindsay & Co., LLC holds 45.03M shares, accounting for 18.50% of the total shares.
BlackRock Institutional Trust Company, N.A. holds 16.14M shares, accounting for 6.63% of the total shares.
The Vanguard Group, Inc. holds 16.50M shares, accounting for 6.78% of the total shares.
PRIMECAP Management Company holds 12.03M shares, accounting for 4.94% of the total shares.
What are the top three shareholder types of Amentum Holdings Inc?
The top three shareholder types of Amentum Holdings Inc are:
American Securities LLC
Goldberg Lindsay & Co., LLC
BlackRock Institutional Trust Company, N.A.
American Securities LLC
Goldberg Lindsay & Co., LLC
BlackRock Institutional Trust Company, N.A.
How many institutions hold shares of Amentum Holdings Inc (AMTM)?
As of 2025Q4, 1079 institutions hold shares of Amentum Holdings Inc, with a combined market value of approximately 246.01M, accounting for 110.29% of the total shares. Compared to 2025Q3, institutional shareholding has increased by -0.12%.
What is the biggest source of revenue for Amentum Holdings Inc?
In FY2025Q3, the Prime contractor business generated the highest revenue for Amentum Holdings Inc, amounting to 3.20B and accounting for 89.78% of total revenue.
