Amentum Holdings, Inc. - AMTM

Sector: Industrials · Industry: Specialty Business Services

Website: No information yet · Social: No information yet

Company profile

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Q1 2026 · Q4 2025

Value (USD)

Total reported value ($000)

$5.982B

QoQ value delta ($000)

+$240.7M (+4.19%)

Implied price effect (QoQ)

-8.4%

Total shares

236,043,543

QoQ shares delta

+28,526,007 (+13.75%)

Total shares held by funds (by quarter)

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Top 25 only Full list

Partial Q1 2026 data: 488 holders have filed so far. Prior holders are carried forward until their next 13F confirms a change.

Manager	Value ($000)	Shares	% of 13F
AMERICAN SECURITIES LLC	1,174,297	45,026,743	29.88%
Invesco Ltd.	560,036	21,473,778	0.09%
BlackRock, Inc.	465,300	17,841,283	0.01%
VANGUARD GROUP INC	446,940	15,411,745	0.01%
PRIMECAP MANAGEMENT CO/CA/	315,184	12,085,294	0.25%
VANGUARD PORTFOLIO MANAGEMENT LLC	204,804	7,852,951	0.01%
VANGUARD CAPITAL MANAGEMENT LLC	173,454	6,650,879	0.0%
FMR LLC	145,484	5,578,386	0.01%
STATE STREET CORP	132,461	5,079,041	0.0%
FRONTIER CAPITAL MANAGEMENT CO LLC	128,579	4,930,210	1.32%
DIMENSIONAL FUND ADVISORS LP	98,767	3,787,420	0.02%
Arvin Capital Management LP	73,485	2,817,700	8.97%
GEODE CAPITAL MANAGEMENT, LLC	73,424	2,814,415	0.0%
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	72,636	2,785,134	0.1%
Focus Partners Wealth	67,936	2,604,911	0.08%
NORGES BANK	66,528	2,294,097	0.01%
COOPER CREEK PARTNERS MANAGEMENT LLC	64,922	2,489,334	2.22%
BANK OF AMERICA CORP /DE/	62,723	2,405,041	0.0%
MORGAN STANLEY	58,286	2,234,913	0.0%
THRIVENT FINANCIAL FOR LUTHERANS	54,780	2,100,457	0.1%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	53,931	2,067,930	0.01%
SEGRA CAPITAL MANAGEMENT, LLC	47,275	1,812,726	19.06%
UBS Group AG	44,617	1,710,775	0.01%
Point72 Asset Management, L.P.	42,525	1,630,563	0.05%
Ruane, Cunniff & Goldfarb L.P.	42,327	1,622,982	0.7%