AMTM

Amentum Holdings, Inc.

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$19.31

−$0.83−4.12%

Delayed · 2026-09-09T20:00:00.000Z · marketstack

2 of 47tracked managers hold this· Q2 2026

Aug 10, 2026$19.31

−$5.13−20.99%over 1M

Day range3% of range

$19.28$20.36

Session

Previous close: $20.14
Open: $20.24
Volume: 2.02M
Avg volume: -
Day high: $20.36
Day low: $19.28

Fundamentals

Visualize fundamentals and more

Market cap: 4.71B
P/E ratio: 23.19
EPS (TTM): $0.83
Dividend yield: -
Beta: -
Shares outstanding: 244M

Source SEC EDGAR · 9/10/2026

Tracked investors

As of Q2 2026 · 72 days ago · next update ~14 Nov 2026· what moved this quarter, onMeasure

2 fund managers this platform follows disclosed a position here, from quarterly SEC filings up to 45 days old; a manager may have sold since without yet having to say so.

Ruane, Cunniff & Goldfarb
Sequoia Fund
$11.1M
0.17%of book
Joel Greenblatt
Gotham Asset Management
$3.23M
0.01%of book

Manager	Position	Share of their book	Last change
Ruane, Cunniff & Goldfarb Sequoia Fund	$11.1M	0.17%
Joel Greenblatt Gotham Asset Management	$3.23M	0.01%

Share price, with each quarter a tracked manager’s position changed shaded across the range it traded in.

14212835

now

Q3 '24

Q4 '24

Q1 '25

Q2 '25

Q3 '25

Q4 '25

Q1 '26

Q2 '26

Hover a shaded quarter to see it moved. Who, and the range they traded in, is onBespoke

13F filings cover US-listed shares only (not cash, bonds, shorts, or private holdings) and are never a recommendation to do the same.

Risk factors, year on year

Item 1ANovember 2025 10-KDecember 2024as filed.

added: 37
dropped: 66
re-drafted: 60

Out of 246 passages in this year’s Item 1A.

New this year

• If we do not have adequate indemnification for our nuclear services, or business is slowed by the extensive regulatory processes for approval and licensing for new and existing nuclear technologies or socio-political opposition to nuclear-related technology …

102 more passages, included withBespoke

Recent activity

2 more events, included withMeasure

Discussion

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Ask about Amentum Holdings, Inc.

The assistant answers from what AMTM has actually filed: 4 annual reports filed with the SEC, 64 Form 4 filings from the last year, 13F positions from the 2 tracked investors who hold it and 2 funds that hold it. Every figure in a reply links to the filing it came from, so an answer can be checked rather than believed.

Pressing one answers it here, from AMTM's filings and figures. One a day without an account; a free account has its own, and no card.

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What an account lets you do with Amentum Holdings, Inc.

Separate the decisions from the paperwork
Every Form 4 AMTM insiders have filed, with vesting and automatic tax sales struck out: what's left is the buys and sells somebody actually chose to make.
Every filingMeasure
Watch the same stakes the professionals are watching
Every tracked position priced at the quarter it was filed and diffed against the one before it: who added, who trimmed, who walked away.
Every position they holdMeasure
Interrogate the filing, not the internet
Ask anything about Amentum Holdings, Inc.'s fundamentals. The assistant answers from its own filings and cites the figure, never a guess from the open web.