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Amentum Holdings, Inc. (AMTM) stock

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NYSE: AMTM NYSE Diversified Support Services Next results ~November 23, 2026

C Fundamentals grade

Amentum Holdings, Inc. is a US-listed company in the diversified support services industry. Its financial year ends in September.

Stock price today

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Third-party market data · may be delayed

Fair value per share

~$17

Cash-flow model

Base case. Range ~$9.0–$27 across our lower- and higher-growth cases (6.4%–16.4% a year).

Price vs value

Modestly overvalued

The price is inside our value range, 34% above our base value.

Price used: $22.47, November 2, 2026

Amentum Holdings, Inc. valuation: adjust assumptions and compare models →

Who’s trading

What company insiders, investment funds and members of Congress have been doing with the stock, from their own filings.

  • Funds196 adding, 230 cuttingOf 50 active managers that changed their stake, 34 added; quarter to June 30, 2026Fund buyers and sellers

Value diary

Our note on each quarter Amentum Holdings files

Where Amentum stands after its latest 10-Q

Revenue for the twelve months to July 2026 was $14.1bn, up 11.4% on a year earlier, slower than 26.1% a quarter earlier. Free-cash-flow margin rose to 3.4% from 1.1% a year earlier. The diluted share count is up 19.2% on a year earlier, which dilutes existing holders. Against its peers on growth, profitability, cash generation and balance sheet, it grades D. It passes 1 of our 5 financial-health checks. Our cash-flow model value is $22.41 a share, against a share price of $19.66.

Source: 10-Q filed August 11, 2026 on SEC EDGAR · Financials · Valuation

Written from the company's filings and our models when each quarter's report arrives. Figures in older notes are as published at the time. Not investment advice.

The Fundamentalytics view

Next results ~November 23, 2026 (estimated)

Amentum Holdings, Inc.'s trailing-twelve-month revenue grew 11.4% year on year, with a free-cash-flow margin of 3.4%. Where it stands out: stock pay as % of revenue of 0.2% ranks 1 of 26 diversified support services companies we cover. Where it lags: change in growth rate of -14.7pp ranks 29 of 32 diversified support services companies we cover.

Our discounted-cash-flow model values the business at ~$17 per share in the base case (~$9.0–$27 across growth scenarios) — model values under stated assumptions, not a price target.

Current signal Free cash flow diverging from earnings: TTM free cash flow grew 243.5% while net income grew 292.3%: a 49pp divergence.

Assembled from SEC-filed figures — the full workings are on this page and in our methodology. Observations, not recommendations.

Highlights

How we pick these

Strengths

  • Beating expectations. Earnings per share beat the analysts' consensus estimate in each of the last four quarters.

Things to watch

  • Results due soon. Results are expected around 9 November; the share price can move sharply on the day.
  • Priced above our value. The share price of $22.47 is 25% above our value per share of $17.
  • Growth slowing. The growth rate is 14.7 points lower than a quarter earlier.
  • Share dilution. Diluted shares rose 19.2% in a year.
  • Volatile shares. Over the past year the shares showed annualised volatility of 47% and a beta of 1.1 against the S&P 500.
  • Below peers: gross margin. Gross margin of 10.2% ranks 17 of 22 diversified support services companies we cover (median 26.4%).

Latest results: FY2026 Q3

Filed August 11, 2026
Earnings per share
$0.67 against an average estimate of $0.61: beat by 9.6%
Revenue
$3.49bn, down 2.0% on a year earlier
Share reaction
-9.4% in the first session after the results on August 10, 2026, against -0.3% for the S&P 500
Guidance given
revenues $13,800m to $13,950m (fiscal year 2026); adjusted EBITDA $1,115m to $1,140m (fiscal year 2026)
Next report
November 23, 2026; average EPS estimate $0.66

Amentum Holdings' figures from its SEC filings and results release; estimates are the analysts' average. Not a recommendation.

Price chart

  • 1 day+2.7%
  • 1 week+1.8%
  • 1 month+23.9%
  • This year-22.5%
  • 1 year+0.3%
  • S&P 500 this year+11.2%

Closing prices to 2026-11-02. Price change only, dividends excluded.

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Third-party market data · may be delayed

At a glance

Trailing twelve months, from SEC filings

Profitability

Revenue (TTM)
$14.1B
Operating margin
4.2%
Net margin
1.4%
EPS (TTM, diluted)
$0.83

Growth

Revenue growth
+11.4%
Change in growth rate
−14.7 pts
Share count change
+19.2%

Cash

Free cash flow (TTM)
$474M
FCF margin
3.4%
Stock pay % of revenue
0.2%

Earnings

Last results
August 10, 2026
Next results (est.)
November 9, 2026

News & updates

Updated October 31, 2026

Company announcements, filed results and changes that matter to shareholders.

  1. Product
  2. Announcement
  3. Leadership
  4. Partnership
  5. Announcement
  6. Partnership
  7. Announcement
  8. Announcement
  9. Results
  10. Guidance
  11. Announcement

Refreshed hourly when new source data is available. Summaries are checked against company releases and SEC filings. Company announcement headlines are labelled when a checked summary is unavailable.

Valuation

Amentum Holdings, Inc. valuation models and calculator

What the price is pricing in

The share price implies about 11.7% a year of cash-flow growth for five years.

  • Priced in11.7%
  • Last 12 months11.4%

Our cash-flow model with every input fixed except growth over the next five years, solved for the growth at which the model value equals the share price ($22.14, Nov 3, 2026). Cash-flow growth then fades to 2.5% a year; discount rate 8.5%. Delivered figures are revenue growth from SEC filings. This is a model exercise, not investment advice or a forecast of the share price. All companies

Fundamentalytics rating

model v1.6 · 2026-11-03
Hold12-month view
12-month price target
~$17
Price used
$22.14close November 3, 2026
Implied change
▼ 24%
Uncertainty
High

How we got here: a discounted-cash-flow model of Amentum Holdings, Inc.'s free cash flow after stock-based pay with after-tax interest added back ($310M, FY2026 Q3 TTM), growing 2.3% and 7.9% in the next two years (forecasts, guidance and its record), then back to 11.4% by year five, and fading to 2.5%, discounted at 8.5%. Lower and higher growth cases span ~$9.0–~$27 ; that spread sets a 35% margin before we rate Buy or Sell.

Produced by Fundamentalytics' automated valuation model on November 3, 2026, using delayed market prices. Rating meanings, methodology and conflicts: recommendations disclosure and research disclaimer. General research, not personal advice — it does not consider your circumstances. Prices can fall as well as rise.

Our value per share comes from a discounted-cash-flow model of Amentum Holdings, Inc.'s free cash flow after stock-based pay ( $310M, FY2026 Q3 TTM, with after-tax interest added back): growth for five years as below (the first two years from forecasts, guidance and the company's record), fading to 2.5%, discounted at 8.5%, then cash added and debt and other claims subtracted. These are model values under stated assumptions, not price targets or recommendations.

Valuation models

We value Amentum Holdings, Inc. as an operating company, with every model that fits that kind of business. Cost of equity 9.3%: the 10-year Treasury yield (4.9%) plus a beta of 0.97 times a 4.5% equity risk premium.

Value per share by model
Model Value per share In the combined value?
Cash-flow model (DCF) Free cash flow to the firm (after stock pay, with after-tax interest added back), grown then faded to 2.5%, discounted at 8.5% as the firm rate, less debt and other claims. ~$17 ~$9.0–$27 Primary model, counts double
Forward price-to-earnings vs peers Next year's consensus earnings per share times peers' typical (harmonic-mean) forward price-to-earnings. Uses analysts' consensus estimates (third-party data), not our forecasts. ~$35 ~$33–$62 Included
Residual income Book value plus the present value of returns above the cost of equity, fading over ten years. ~$7.2 ~$4.4–$12 Included
Justified price-to-book Book value times (return on equity - growth) / (cost of equity - growth): steady-state returns. ~$1.0 ~$0.8–$1.2 Left out: out of range vs price (0.04x)
Combined value Weighted average of the models that apply: the primary model (cash-flow model (dcf)) counts double. Models more than 5x or less than 0.2x the share price, or more than 3x away from the other models' median, are left out. ~$19 ~$7.2–$35 3 models

Different models fail in different ways, so where several apply we average them rather than trust one. Peer-based models compare Amentum Holdings, Inc. with Diversified Support Services in our coverage, using third-party market data. Model values are estimates under stated assumptions, updated as new filings arrive; not price targets or investment advice. How each model works.

What moves the value

  • Revenue growth 5 points lower ▼ −33%
  • Revenue growth 5 points higher ▲ +43%
  • Free-cash-flow margin 1 point lower ▼ −40%
  • Last year's free-cash-flow margin change, if it persists ▲ more than doubles
  • Discount rate 1 point higher ▼ −21%
Value per share under different assumptions
Discount rate ↓ / growth → −5% growth0% growth5% growth10% growth15% growth20% growth
7% $4$11$19$31$46$65
8.5% —$4$11$19$30$43
10% —$1$6$12$20$30

Valuation multiples over time Market data may be delayed

At fiscal year end 20242025Now
Share price$25.67$25.95$22.47
Market value$2.3bn$6.3bn$5.5bn
+ Net debt (− = net cash)$4.3bn$3.6bn$3.4bn
Enterprise value$6.7bn$9.9bn$8.9bn
Multiples
Price / sales 0.3x0.4x0.4x
Price / earnings —95.9x27.0x
Price / free cash flow 64.9x12.3x11.6x
EV / EBITDA 21.2x19.0x14.1x

Market value uses the period's diluted share count; figures for each fiscal year use that year's results and the price at year end. "Now" uses today's price and the last twelve months.

Moat

Not assessed: fewer than five years of comparable figures in the filings. AI disruption exposure for this industry: Medium.

A rules-based reading of reported figures, not a forecast and not investment advice. How the score is built: methodology.

Forecasts and guidance

Next results: November 23, 2026, after the close. Analysts expect revenue of $3.7bn and EPS of $0.66 (range $0.62 to $0.69) for the quarter.

Analysts' consensus

Fiscal yearEPSGrowthRevenueGrowth
Current $2.46 +11% $13.9bn −3%
Next $2.64 +7% $14.1bn +1%

Next year's EPS estimate has moved −4.9% in 90 days, across 11 analysts.

How the EPS forecast has moved

The consensus EPS forecast for the current fiscal year is +1.6% on 90 days ago. In the last 30 days, 9 analysts raised Amentum Holdings, Inc.'s forecast and 1 cut it.

Consensus EPS forecast Amentum Holdings, Inc., last 90 days
$2.40 $2.50 $2.60 $2.70 $2.80 90 days ago 60 days ago 30 days ago 7 days ago Now Current fiscal year, 90 days ago: $2.42 Current fiscal year, 60 days ago: $2.46 Current fiscal year, 30 days ago: $2.46 Current fiscal year, 7 days ago: $2.46 Current fiscal year, Now: $2.46 $2.46 Next fiscal year, 90 days ago: $2.78 Next fiscal year, 60 days ago: $2.64 Next fiscal year, 30 days ago: $2.64 Next fiscal year, 7 days ago: $2.64 Next fiscal year, Now: $2.64 $2.64

Average of analysts' published estimates (third-party data).

View chart data
Period Current fiscal yearNext fiscal year
90 days ago $2.42$2.78
60 days ago $2.46$2.64
30 days ago $2.46$2.64
7 days ago $2.46$2.64
Now $2.46$2.64

Earnings against estimates

Quarter toEstimateActualSurprise
Jun 2026 $0.61 $0.67 +9.6%
Mar 2026 $0.57 $0.61 +6.8%
Dec 2025 $0.52 $0.54 +4.4%
Sept 2025 $0.59 $0.63 +6.5%

Adjusted EPS as companies report it, against the average analyst estimate.

Management guidance

Earnings release, August 10, 2026
  • Revenues fiscal year 2026 $13,800m to $13,950m
    “Revenues $13,800 - $13,950 $13,950 - $14,300” source
  • Adjusted Diluted EPS fiscal year 2026 $2.40 to $2.50 Non-GAAP Raised
    “Adjusted Diluted EPS 1 $2.40 - $2.50 $2.25 - $2.45” source
  • Adjusted EBITDA fiscal year 2026 $1,115m to $1,140m Non-GAAP Raised
    “Adjusted EBITDA 1 $1,115 - $1,140 $1,100 - $1,140” source
  • Free Cash Flow fiscal year 2026 $525m to $575m Non-GAAP
    “Free Cash Flow 1 $525 - $575 $525 - $575” source

Figures and quotations are management's, copied from the company's own press release (SEC 8-K exhibit) and checked word for word against it. Forward-looking statements are the company's expectations, not ours and not advice; guidance can change or be missed.

How our valuation uses these forecasts

Our cash-flow model grows Amentum Holdings, Inc.'s revenue by +2.3% next year and +7.9% the year after, then fades back toward its own record by year five. Next year's rate weighs analysts' consensus (-0.8%, weight 55%) , management guidance (-1.1%, weight 19%) and the company's own record (+11.4%, weight 26%) . How the weights are set.

Analyst recommendations

12 analysts, Oct 2026
Buy542%
Hold758%
Sell00%

Monthly trend

  1. Oct 202623712
  2. Sep 2026236112
  3. Aug 2026236112
  4. Jul 2026236112

Counts of recommendations published by analysts covering Amentum Holdings, Inc., by month. Source: Aggregated broker recommendations (third-party data). Aggregated counts only: we do not reproduce any firm's recommendation or price target, and these are not Fundamentalytics ratings.

Positioning

Short interest
8.2%
of tradable shares
Days to cover
6.99
at average volume
Short interest, 1 month
+4%
to October 15, 2026
Held by institutions
—
of shares
Held by insiders
1.2%
of shares
Employees
50,000
full time

Consensus figures average analysts' published estimates (third-party data); guidance is the company's own. Neither is our forecast. Short interest is reported twice a month and lags. Market data may be delayed.

This section is general information, not investment advice or a personal recommendation, and it does not take account of your objectives or circumstances. Forecasts and guidance are estimates, not promises: companies miss their own guidance and analysts' figures are often revised. Prices can fall as well as rise, and you can lose money. See our disclaimer.

Share-price performance

Market data may be delayed

What moved the share price

Last 12 months +0.3%

$22.41 on October 31, 2025 to $22.47

ThenNowEffect
Revenue (last 12 months) $12.7bn $14.1bn +11.4%
Net margin 0.4% 1.4% +252.0%
P/E multiple 88.7x 27.0x −69.5%
Share count 206m 245m −16.1%

Biggest factor: net margin.

The effects multiply back to the price change exactly. Results are the last 12 months as known on each date (filings assumed public 45 days after quarter end).

Return and risk by year

Calendar year 20252026 to date
Return
AMTM+38%−23%
Industry peers (median)−10%−10%
S&P 500+18%+11%
Months that ended higher
AMTM42%46%
S&P 50075%46%
Largest fall from a high during the year
AMTM−30%−52%
S&P 500−19%−9%

Worst fall since September 24, 2024: 52% from February 6, 2026 to September 30, 2026. Getting back needed a 107% gain, and the shares have not yet recovered.

Price behaviour

52-week range
$18.12 – $37.53
From 52-week high
−40.1%
vs 50-day average
+13.3%
vs 200-day average
−8.0%
Volatility (1 year)
47%
Beta vs S&P 500
1.11

Volatility is the annualised standard deviation of daily returns. Beta 1.5 means the shares typically moved 1.5% for each 1% move in the S&P 500 over the past year. Prices to November 2, 2026.

Share price after results

Next day
3 up, 5 down
typical move ±9.4%
After a week
3 up, 5 down
typical move ±10.5%
After a month
1 up, 7 down
typical move ±11.7%
Results releasedNext dayS&P 500 next day5 days21 days
August 10, 2026 −9.4% −0.3% −17.5% −22.0%
May 11, 2026 −0.9% +0.1% −5.1% −10.3%
February 9, 2026 −14.6% +0.2% −19.9% −25.4%
November 24, 2025 +23.7% +2.4% +18.4% +23.3%
August 5, 2025 +5.1% +0.3% +4.8% −1.3%
May 6, 2025 −3.3% −0.4% −3.1% 0.0%
February 4, 2025 +11.2% +1.1% +1.6% −10.1%
December 16, 2024 −6.7% 0.0% −13.4% −1.1%

From the close before the release date to the close 1, 5 and 21 trading days after it, so releases before the open and after the close are both captured. Past moves don't predict future ones.

Options strategies

All options ideas

How Amentum Holdings, Inc.’s listed options are priced, and three ways to use them that follow from our valuation. Quotes are delayed, read November 2, 2026. Check the live chain at your broker before trading.

Cash-secured put

Not offered: fundamentals grade C (needs B+ or better).

We suggest selling a put only on well-rated companies, at a strike where the price you would pay if assigned (strike less premium) is at or below our fair value.

Covered call

Not offered: no liquid call at or above our price target — the model says the upside is worth more than any listed strike.

For holders: sell a call at a strike at or above our fair value, so the shares are only sold at a price the model calls full value.

Collar

Not offered: no liquid put and call pair for the same expiry.

For holders of a stock trading at or above our fair value: buy a put for a floor and sell a call to pay for it.

General research, not personal advice. Options can lose you more than you expect and are not suitable for everyone: put sellers can be made to buy shares that keep falling, call sellers give up gains above the strike, and results or news can move prices sharply. Chances shown are approximations from each option’s delta. Spreads, fees and early assignment are not modelled.

Amentum Holdings, Inc. in five measures

Fundamentals grade C
Growth Profitability Cash Balance sheet Value

Growth, profitability, cash generation and balance sheet are percentiles against the companies we cover in the same industry, from SEC filings (100 = best). Value compares the share price with our modelled value range (50 = at our base value; higher = cheaper). A description of reported data and our model — not a quality score or advice.

Fundamentals

Revenue (TTM) Amentum Holdings, Inc.
$8B $10B $12B $14B $16B FY24 Q4 FY25 Q2 FY25 Q4 FY26 Q3 Revenue (TTM), FY24 Q4: $8.4B Revenue (TTM), FY25 Q1: $9.8B Revenue (TTM), FY25 Q2: $11.3B Revenue (TTM), FY25 Q3: $12.7B Revenue (TTM), FY25 Q4: $14.4B Revenue (TTM), FY26 Q1: $14.2B Revenue (TTM), FY26 Q2: $14.2B Revenue (TTM), FY26 Q3: $14.1B $14.1B

Source: SEC EDGAR filings. Retrieved October 20, 2026.

View chart data
Period Revenue (TTM)
FY24 Q4 $8.4B
FY25 Q1 $9.8B
FY25 Q2 $11.3B
FY25 Q3 $12.7B
FY25 Q4 $14.4B
FY26 Q1 $14.2B
FY26 Q2 $14.2B
FY26 Q3 $14.1B
Revenue growth, TTM YoY Amentum Holdings, Inc.
0% 20% 40% 60% 80% FY25 Q4 FY26 Q1 FY26 Q2 FY26 Q3 Revenue growth, TTM YoY, FY25 Q4: 71.6% Revenue growth, TTM YoY, FY26 Q1: 44.7% Revenue growth, TTM YoY, FY26 Q2: 26.1% Revenue growth, TTM YoY, FY26 Q3: 11.4% 11.4%

Source: SEC EDGAR filings. Retrieved October 20, 2026.

View chart data
Period Revenue growth, TTM YoY
FY25 Q4 71.6%
FY26 Q1 44.7%
FY26 Q2 26.1%
FY26 Q3 11.4%
Operating margin (TTM) Amentum Holdings, Inc.
2.5% 3% 3.5% 4% 4.5% FY24 Q4 FY25 Q2 FY25 Q4 FY26 Q3 Operating margin (TTM), FY24 Q4: 3.5% Operating margin (TTM), FY25 Q1: 3.4% Operating margin (TTM), FY25 Q2: 3.2% Operating margin (TTM), FY25 Q3: 2.9% Operating margin (TTM), FY25 Q4: 3.3% Operating margin (TTM), FY26 Q1: 3.4% Operating margin (TTM), FY26 Q2: 3.7% Operating margin (TTM), FY26 Q3: 4.2% 4.2%

Source: SEC EDGAR filings. Retrieved October 20, 2026.

View chart data
Period Operating margin (TTM)
FY24 Q4 3.5%
FY25 Q1 3.4%
FY25 Q2 3.2%
FY25 Q3 2.9%
FY25 Q4 3.3%
FY26 Q1 3.4%
FY26 Q2 3.7%
FY26 Q3 4.2%
FCF margin (TTM) Amentum Holdings, Inc.
0% 1% 2% 3% 4% FY24 Q4 FY25 Q2 FY25 Q4 FY26 Q3 FCF margin (TTM), FY24 Q4: 0.4% FCF margin (TTM), FY25 Q1: 2.3% FCF margin (TTM), FY25 Q2: 2.4% FCF margin (TTM), FY25 Q3: 1.1% FCF margin (TTM), FY25 Q4: 3.6% FCF margin (TTM), FY26 Q1: 1.9% FCF margin (TTM), FY26 Q2: 3.1% FCF margin (TTM), FY26 Q3: 3.4% 3.4%

Source: SEC EDGAR filings. Retrieved October 20, 2026.

View chart data
Period FCF margin (TTM)
FY24 Q4 0.4%
FY25 Q1 2.3%
FY25 Q2 2.4%
FY25 Q3 1.1%
FY25 Q4 3.6%
FY26 Q1 1.9%
FY26 Q2 3.1%
FY26 Q3 3.4%

Data: SEC EDGAR XBRL company facts (as filed in 10-K/10-Q); forms 10-K, 10-Q. Generated November 3, 2026. Definitions in our methodology.

Financial statements

US$ billions unless shown otherwise. Fiscal years, plus the last twelve months (LTM) when newer.

Fiscal year 2022 Sept 2022 2023 Sept 2023 2024 Sept 2024 2025 Oct 2025 LTM Jul 2026
Income
Revenue 7.7 7.9 8.4 14.4 14.1
Gross profit 0.8 0.8 0.8 1.5 1.4
EBITDA 0.1 0.1 0.3 0.5 0.6
Operating income 0.1 0.1 0.3 0.5 0.6
Net income −0.1 −0.3 −0.1 0.1 0.2
Diluted EPS −$0.93 −$3.49 −$0.90 $0.27 $0.83
Growth (year on year)
Revenue — +2.5% +6.6% +71.6% +11.4%
EBITDA — — — +65.6% +55.3%
Operating income — — — +64.9% +60.2%
Margins
Gross margin 10.0% 9.9% 9.5% 10.5% 10.2%
EBITDA margin 1.8% 1.1% 3.7% 3.6% 4.5%
Operating margin 1.6% 0.7% 3.5% 3.3% 4.2%
Net margin −1.1% −4.0% −1.0% 0.5% 1.4%
Free-cash-flow margin 1.4% 0.7% 0.4% 3.6% 3.4%
Cash flow
Cash from operations 0.1 0.1 0.0 0.5 0.5
Capital spending 0.0 0.0 0.0 0.0 0.0
Free cash flow 0.1 0.1 0.0 0.5 0.5
Stock-based pay 0.0 0.0 0.0 0.0 0.0
Free cash flow after stock pay 0.1 0.1 0.0 0.5 0.4
Balance sheet
Cash 0.4 0.3 0.5 0.4 0.5
Total debt 0.0 4.2 4.8 4.0 3.9
Net debt (negative = net cash) −0.4 3.9 4.3 3.6 3.4
Diluted shares 90m 90m 91m 244m 245m

Source: SEC EDGAR XBRL company facts (US and foreign periodic filings); column headings link to the filing. EBITDA is operating income plus depreciation and amortisation. Free cash flow is cash from operations minus capital spending. Growth is left blank when last year's figure was a loss or under 2% of revenue. Share counts and EPS are restated for stock splits. A dash means the company didn't report the figure.

Financial health

1 of 5 checks passed · July 3, 2026
What it owns · $11.2bn
Short-term assets $3.2bnLonger-term assets $8.0bn
What it owes, and who funded it · $11.1bn
Short-term liabilities $2.1bnLonger-term liabilities $4.3bnShareholders' equity $4.7bn
  • Short-term assets cover short-term liabilities $3.2bn of assets due within a year against $2.1bn of liabilities due within a year.
  • Short-term assets cover long-term liabilities $3.2bn short-term assets against $4.3bn of longer-dated liabilities.
  • More cash than debt $459m of cash against $3.8bn of debt.
  • Debt below 40% of shareholders' equity Debt is 81% of equity.
  • Debt burden no higher than five years ago Five-year comparison not available. Not assessable.
  • A year's operating cash flow covers at least 20% of debt $505m of operating cash flow against $3.8bn of debt.
  • Operating profit covers interest at least five times over Interest not separately reported. Not assessable.

From Amentum Holdings, Inc.'s latest balance sheet as filed. Checks are fixed, documented rules (methodology), counted only where the company reports the figures — a dot means the filing doesn't break the item out. Descriptions of reported data, not advice.

Dividends, buybacks and capital spending

Diluted share count
+19.2%
year over year
Sales & admin spending
3.8%
of revenue

Competitors: side by side with peers

Closest by revenue in diversified support services
Last 12 months unless stated AMTM CTAS LDOS TRI RTO BCO Median
Revenue, last 12 months $14.1bn $11.6bn $17.6bn $7.5bn $6.9bn $5.5bn $906m
Revenue growth, last 12 months 11.4% 9.5% 3.4% 3.0% 4.4% 8.1% 6.3%
Revenue growth, 3-year average — 8.7% 5.9% — — 5.0% 6.4%
Revenue growth, latest quarter −2.0% 10.9% 7.2% — — 7.1% 7.2%
Gross margin 10.2% 51.0% 17.8% — — 26.4% 29.0%
Operating margin 4.2% 23.4% 11.5% 28.5% 8.5% 10.5% 4.9%
Operating margin, 3-year average — 22.7% 9.7% 22.5% — 9.8% 9.9%
Net margin 1.4% 17.8% 7.8% 20.1% 6.8% 3.3% 2.7%
Cash from operations / revenue 3.6% 21.1% 13.0% 35.5% 14.1% 10.2% 7.1%
Free-cash-flow margin 3.4% 17.6% 12.3% 27.0% 11.1% 7.2% 3.7%
Free-cash-flow margin, 3-year average — 17.4% 9.7% 25.2% — 7.2% 7.4%
Stock pay / revenue 0.2% 1.1% 0.6% — — 0.5% 1.4%
Change in share count 19.2% −1.2% −3.6% −0.4% 0.3% −4.4% 0.1%

Median of all 32 companies we cover in diversified support services. Shaded: best of the six on that line (lowest for stock pay and share-count growth). 3-year figures average the last three 12-month periods; 3-year growth is compound annual. Source: SEC filings.

Peer comparison

32 diversified support services companies
Measure Company Peer median Rank
Revenue growth Growth 11.4% 6.5% 11 of 32
Change in growth rate Growth -14.7pp +0.8pp 29 of 32
Gross margin Profitability 10.2% 26.4% 17 of 22
Operating margin Profitability 4.2% 4.5% 16 of 29
Net margin Profitability 1.4% 3.3% 19 of 32
Free-cash-flow margin Cash generation 3.4% 4.1% 17 of 31
Stock pay as % of revenue Cash generation 0.2% 1.4% 1 of 26
Long-term debt as % of assets Balance sheet 33.7% 33.7% 10 of 18
Change in share count Balance sheet 19.2% -0.1% 25 of 28

Rank 1 = best in the group (for spending, debt and dilution, lower ranks first).

Where the revenue comes from

Fiscal year to October 3, 2025
Segments
Line of business Revenue Share YoY
Global Engineering Solutions $8.8B 61.5% ▲ 38.1%
Digital Solutions $5.5B 38.5% ▲ 179.8%
Geography
Region Revenue Share YoY
United States $10.7B 74.7% ▲ 77.5%
Outside the US $3.6B 25.3% ▲ 56.3%

From Amentum Holdings, Inc.'s 10-K filed November 25, 2025, as tagged in the filing. View filing. Indented rows are part of the line above; their share is of that line. In the bars, the faint bar behind is the year before.

Who owns it

Funds buying and selling
Reported value
$4.3B
Institutions reporting
456
Shares held vs prior quarter
▲ 3.8%
Positions opened / closed
51 / 74

Top buyers and sellers, Q2 2026: 196 institutions bought and 230 sold ; the biggest buyer was Invesco Ltd (+3.5M shares) and the biggest seller Focus Partners Wealth (−2.5M). See which funds bought and sold →

Largest reported holders, June 30, 2026
Manager Value Shares Share of 13F value Shares QoQ
American Securities LLC $931M 45.0M 21.5% 0.0%
Invesco Ltd. $516M 25.0M 11.9% ▲ 16.2%
Blackrock, Inc. $370M 17.9M 8.5% ▲ 0.4%
Primecap Management Co $254M 12.3M 5.9% ▲ 1.7%
Vanguard Portfolio Management LLC $164M 7.9M 3.8% ▲ 1.2%
Vanguard Capital Management LLC $139M 6.7M 3.2% ▲ 0.9%
FMR LLC $117M 5.7M 2.7% ▲ 1.8%
Dimensional Fund Advisors LP $114M 5.5M 2.6% ▲ 46.2%
State Street Corp $106M 5.2M 2.5% ▲ 1.4%
Frontier Capital Management Co LLC $85.7M 4.1M 2.0% ▼ 15.9%
Troluce Capital Advisors LLC $73.7M 3.6M 1.7% ▲ 256.5%
Geode Capital Management, LLC $56.2M 2.7M 1.3% ▼ 3.5%

From Form 13F filings with the SEC ( quarterly data sets), as reported by each manager for June 30, 2026 and filed up to 45 days later. 13F reports cover long US-listed positions of managers above $100M only, so this is not Amentum Holdings, Inc.'s complete shareholder register. Values are as reported by the filers ; 7 inconsistently scaled filing rows were excluded.

Insider trading activity

Full insider history and chart
Insider purchases History → $0 0 trades by 0 insiders, last 12 months Insider sales History → $0 0 trades by 0 insiders
Net ▲ $0 net buying

No open-market insider trades reported in the last 12 months.

From insiders' Form 4 filings with the SEC. Excludes awards, option exercises and shares withheld for tax. "Pre-set plan" means the filing marks the trade as made under a Rule 10b5-1 plan. See every insider trade since five years ago, on a price chart.

Trades by members of Congress

All 5 trades and filings

No trades in Amentum Holdings, Inc. disclosed in the last 12 months; 5 earlier trades on record.

  • William R. Keating(D-MA 9):Sale (full), $1,001 - $15,000, traded October 31, 2024, filed November 6, 2024
  • Thomas H. Kean, Jr.(R-NJ 7):Exchange, $1,001 - $15,000, traded September 30, 2024, filed October 15, 2024
  • Thomas H. Kean, Jr.(R-NJ 7):Exchange, $1,001 - $15,000, traded September 30, 2024, filed October 15, 2024

Value ranges as filed; reports can arrive up to 45 days after a trade.

Earnings dates and SEC filings

Results announcements

Next expected around November 9, 2026 estimated from the company's past filing pattern, not announced

  • August 10, 2026
  • May 11, 2026
  • February 9, 2026
  • November 24, 2025
  • August 5, 2025
  • May 6, 2025

Recent SEC filings

Data status

When each part of this page on Amentum Holdings, Inc. was last updated.

DataLast updatedSource
Share priceExchange closing prices
Financial statementsSEC 10-K and 10-Q filings
News and updatesCompany releases and SEC 8-K filings
Analyst estimatesAggregated analyst estimates
Valuation and scoresOur models, from the filed figures

How we build and check these figures: methodology and data sources.

Amentum Holdings, Inc. in brief

What does Amentum Holdings, Inc. do?
Amentum Holdings, Inc. is a US-listed company in the diversified support services industry. Its financial year ends in September.
What is Amentum Holdings, Inc.'s stock ticker?
Amentum Holdings, Inc. trades under the ticker AMTM on NYSE. This page brings together its financial statements, valuation models, ownership and recent company updates.
What is Amentum Holdings, Inc.'s revenue, and how fast is it growing?
Over its most recent trailing twelve months, Amentum Holdings, Inc. reported revenue of $14.1B, 11.4% higher than a year earlier, according to its SEC filings.
What is Amentum Holdings, Inc.'s free cash flow?
Amentum Holdings, Inc.'s free-cash-flow margin is 3.4% of revenue over the trailing twelve months, ranking 17 of the 31 diversified support services companies we cover.
What is Amentum Holdings, Inc.'s fair value (intrinsic value) per share?
Our discounted-cash-flow model of Amentum Holdings, Inc.'s free cash flow after stock-based pay gives ~$17 per share in the base case, and ~$9.0–$27 across growth scenarios. These are model values under stated assumptions — not a price target or a recommendation.
Who are Amentum Holdings, Inc.'s largest institutional shareholders?
By value reported in 13F filings for June 30, 2026, the largest reported holders are American Securities LLC, Invesco Ltd. and Blackrock, Inc. 13F reports cover long US-listed positions of managers above $100M, filed up to 45 days after quarter end.
What is Amentum Holdings, Inc.'s market cap?
On November 2, 2026, Amentum Holdings, Inc.'s market capitalisation was about $5.5B, with a price-to-earnings ratio of 27.0 and net debt of $3.4B. Market figures come from third-party market data and may be delayed.
How much debt does Amentum Holdings, Inc. have?
Amentum Holdings, Inc.'s debt-to-equity ratio is 81.5%, from its latest balance sheet. The financial health section below sets out its other solvency checks.
Who are Amentum Holdings, Inc.'s competitors?
In our Diversified Support Services peer group, the companies closest to Amentum Holdings, Inc. are Cintas, Leidos, Thomson Reuters Corp, Rentokil Initial PLC and Brinks Co. The side-by-side comparison below sets their revenue, margins and growth against Amentum Holdings, Inc.'s.
When is Amentum Holdings, Inc.'s next earnings date?
Around November 23, 2026, estimated from the spacing of its past results announcements (8-K filings). That is an estimate, not a confirmed date — Amentum Holdings, Inc. announces its own schedule.