What is the 13F Pro Quality Score for AMTM?

13F Pro ranks Amentum Holdings, Inc. (AMTM) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View AMTM's current score at https://13fpro.ai/research/AMTM (free sign-up required for the full ranking).

Which hedge funds own the most AMTM stock?

Based on the most recent Form 13F-HR filings on SEC EDGAR, the largest reported institutional holders of AMTM include AMERICAN SECURITIES, Invesco Ltd., BlackRock,. Holdings are reported quarterly within 45 days of quarter-end and updated on https://13fpro.ai/research/AMTM as soon as new 13F filings post.

Where does 13F Pro source AMTM data?

All Amentum Holdings, Inc. fundamentals and ownership data come directly from SEC EDGAR. Amentum Holdings, Inc. files with the SEC under CIK 2011286. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is AMTM in?

Amentum Holdings, Inc. (AMTM) is classified in the Industrials sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/industrials.

How often is AMTM research updated on 13F Pro?

AMTM's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

Amentum Holdings, Inc.(AMTM)Stock Analysis

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13F Pro Quality Score

55.6/100

Rank #1,150 of 2,879 stocksTOP 50%

View Industrials peers →

Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Aug 14, 2026.

Revenue Growth

40.2/100

Profitability

40.3/100

Balance Sheet

43.4/100

Earnings Quality

99.2/100

Free Cash Flow

39.4/100

Institutional Flow

86.6/100

Revenue Scale

89.6/100

Dilution Risk

87.1/100

AMTM Stock Analysis & AI Quality Score

AI stock analysis and institutional research for Amentum Holdings, Inc. (AMTM), a Industrials sector company. 13F Pro's AI-powered ranking engine scores AMTM at 55.6/100 on a 32-signal composite quality model, placing it at rank #1,150 of 2,879 stocks — the top half of the AI-ranked universe. AMTM scores in the top quartile across earnings quality (99.2), revenue scale (89.6), institutional flow (86.6). Areas of concern include free cash flow (39.4), which score below median versus the broader universe. Based on the latest XBRL financial filings (Q2 2026), Amentum Holdings, Inc. reports quarterly revenue of $3.5B, net income of $54.0M, an operating margin of 4.3%. Top institutional holders of AMTM by reported 13-F value include AMERICAN SECURITIES, Invesco Ltd., BlackRock,, based on the most recent SEC filings. AMTM trades on the NYSE exchange and files with the SEC under CIK 2011286. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate AMTM daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for Amentum Holdings, Inc. directly from SEC EDGAR. Amentum Holdings, Inc.'s 13F Pro composite quality score has ranged between 41 and 59 since 2025, currently 55.6 — an improving long-term trajectory across 12 quarterly and live scoring snapshots.

✦

Fun facts about Amentum Holdings, Inc.

Quirks, history, and lore behind AMTM — the kind of stuff that makes a stock memorable.

1
The Basics
U.S. government services company · large-cap · listed on NYSE · headquartered in Northern Virginia.
2
The Numbers
Generates roughly $7 billion in annual revenue and employs tens of thousands of people, the vast majority working on contracts for U.S. federal agencies.
3
The History
Born from a 2023 spinoff of a major defense and engineering conglomerate, it became an independent public company almost overnight — no century-long origin story required.
4
The Secret
Its bread and butter is mission-critical operations support — think nuclear facilities, intelligence programs, and military installations — the stuff governments quietly outsource.
5
The Lore
The name is a nod to Latin roots suggesting readiness and capability, which is fitting for a firm whose clients need things to work every single time, no excuses.
6
The Giveaway
Spun out of AECOM, this contractor handles everything from Department of Energy nuclear sites to classified intelligence support — and trades under the ticker AMTM.

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Revenue

Q2 2026

$3.5B

Net Income

Q2 2026

$54.0M

Free Cash Flow

Q2 2026

$220.0M

Operating Margin

Q2 2026

4.3%

ROIC

Q2 2026

1.8%

D/E Ratio

Q2 2026

0.86

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro+

Revenue

+71.6% YoY

$14.39BFY 2025

FY22 $7.68BFY23 $7.87BFY24 $8.39BFY25 $14.39B

Net Income

+180.5% YoY

$66.0MFY 2025

FY22 $-84.0MFY23 $-314.0MFY24 $-82.0MFY25 $66.0M

Operating Income

+64.9% YoY

$480.0MFY 2025

FY22 $121.0MFY23 $57.0MFY24 $291.0MFY25 $480.0M

EPS (Diluted)

+130.0% YoY

$0.27FY 2025

FY22 $-0.93FY23 $-3.49FY24 $-0.90FY25 $0.27

Total Assets

-4.3% YoY

$11.46BFY 2025

FY22 —FY23 $6.41BFY24 $11.97BFY25 $11.46B

Total Debt

-15.5% YoY

$3.98BFY 2025

FY22 —FY23 $4.16BFY24 $4.71BFY25 $3.98B

Op. Cash Flow

+1055.3% YoY

$543.0MFY 2025

FY22 $126.0MFY23 $67.0MFY24 $47.0MFY25 $543.0M

Metric	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Revenue	$14.39B +71.6%	$8.39B +6.6%	$7.87B +2.5%	$7.68B	—
Net Income	$66.0M +180.5%	$-82.0M +73.9%	$-314.0M -273.8%	$-84.0M	—
Operating Income	$480.0M +64.9%	$291.0M +410.5%	$57.0M -52.9%	$121.0M	—
EPS (Diluted)	$0.27 +130.0%	$-0.90 +74.2%	$-3.49 -275.3%	$-0.93	—
Total Assets	$11.46B -4.3%	$11.97B +86.7%	$6.41B	—	—
Total Debt	$3.98B -15.5%	$4.71B +13.4%	$4.16B	—	—
Operating Cash Flow	$543.0M +1055.3%	$47.0M -29.9%	$67.0M -46.8%	$126.0M	—

AI Insight: AMTM Financial Trends

Operating income and leverage both trending decisively higher; net income recovery masks persistent cash-conversion weakness.

• Operating income rose from $103M in Q2 2025 to $151M in Q2 2026, a 47% gain over four quarters.

• Total debt fell $757M from Q3 2024 ($4,715M) to Q2 2026 ($3,967M); leverage ratio improving materially.

• Revenue grew 15.3% from Q2 2025 ($3,561M) to Q2 2026 ($3,478M) — note: Q1 2026 seasonal dip to $3,237M.

⚠ Operating cash flow volatile: swung $361M from Q1 2026 outflow (-$136M) to Q2 2026 inflow (+$225M). Working-capital timing risk.

⚠ Net income remains depressed at $54M in Q2 2026 despite $151M op income; ~64% margin leakage below operating line.

AI Insight: AMTM Ratio Trends

Profitability and returns accelerating sharply into Q2 2026, with operating margin and ROIC at multi-year highs and leverage declining.

• Operating margin expanded from 2.9% in Q2 2025 to 4.3% in Q1–Q2 2026; net margin rose to 1.6% in Q2 2026 from 0.3% a year prior.

• ROIC climbed from 4.6% in Q2 2025 to 7.0% in Q2 2026; ROE surged to 4.7% from 0.9% year-over-year.

• Debt-to-equity ratio fell to 0.86 in Q2 2026 from 1.06 in Q4 2024, indicating sustained deleveraging.

⚠ Q1–Q2 2025 showed severe margin and return compression (OpMargin 2.9%, ROIC 4.6%); monitor whether recent recovery sustains or was seasonal.

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Available Research

13F Pro tracks comprehensive data for Amentum Holdings, Inc. including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of AMTM

AMERICAN SECURITIES LLC
$1.2B45,026,743 sh
Invesco Ltd.
$560.0M21,473,778 sh
BlackRock, Inc.
$465.3M17,841,283 sh
PRIMECAP MANAGEMENT CO/CA/
$315.2M12,085,294 sh
VANGUARD PORTFOLIO MANAGEMENT LLC
$204.8M7,852,951 sh
VANGUARD CAPITAL MANAGEMENT LLC
$173.5M6,650,879 sh
FMR LLC
$145.5M5,578,386 sh
STATE STREET CORP
$132.5M5,079,041 sh
FRONTIER CAPITAL MANAGEMENT CO LLC
$128.6M4,930,210 sh
DIMENSIONAL FUND ADVISORS LP
$98.8M3,787,420 sh

Fund	Value	Shares
AMERICAN SECURITIES LLC	$1.2B	45,026,743
Invesco Ltd.	$560.0M	21,473,778
BlackRock, Inc.	$465.3M	17,841,283
PRIMECAP MANAGEMENT CO/CA/	$315.2M	12,085,294
VANGUARD PORTFOLIO MANAGEMENT LLC	$204.8M	7,852,951
VANGUARD CAPITAL MANAGEMENT LLC	$173.5M	6,650,879
FMR LLC	$145.5M	5,578,386
STATE STREET CORP	$132.5M	5,079,041
FRONTIER CAPITAL MANAGEMENT CO LLC	$128.6M	4,930,210
DIMENSIONAL FUND ADVISORS LP	$98.8M	3,787,420

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Is AMTM a good stock to buy?

13F Pro's AI-powered analysis of Amentum Holdings, Inc. (AMTM) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Industrials sector (listed on NYSE). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for AMTM are available on the AMTM stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing.

Which hedge funds own AMTM?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling AMTM. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of Amentum Holdings, Inc.'s investment landscape.