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AMTM Amentum Holdings Inc.

Industrials, filed as AMENTUM HOLDINGS INC (COM), Equity As of 2026 Q2 among managers we track Quote on Google Finance, opens in a new tab

Bought by 1 manager in 2026 Q2, sold by 2

  • 2 Owners
  • Max 0.2%
  • $14M
  • 1 add 1 reduce 1 exit

In 2026 Q2 George Soros added to Amentum, Ruane, Cunniff & Goldfarb trimmed, and Lee Ainslie sold out.

Who owns this now

Largest portfolio weights among holders, up to 0.2% (Ruane, Cunniff & Goldfarb). Not free-float ownership.

  1. Ruane, Cunniff & Goldfarb Reduce 0.17%
  2. George Soros Add 0.03%

Who owns AMTM

Sorted by value, long equity only, as of 2026 Q2.

History
Ruane, Cunniff & Goldfarb 0.17%, was 0.70% Reduce −66.9% 537,213 $11M History
George Soros, Soros Fund Management 0.03% Add +9.9% 118,276 $2.4M History
Lee Ainslie, Maverick Capital exited 2026 Q2 Last 2026 Q1 0.01% Exit −0.01% 46,335 $1.2M History

2 current, 1 exited last period, options excluded

Weight bar: held both quarters added sold at this quarter’s reported price

Insider trades

Open-market buys and sales by AMTM's executives, directors and 10% owners in the last 12 months, from their Form 4s

All AMTM insider trades
  • None no insider bought on the open market
  • None no sales outside a trading plan
  • None no planned (10b5-1) sales

No open-market buys or sales on file.

Also filed in the last 12 months, not counted as buying or selling: 26 option exercises, 22 share withholdings for taxes, 15 stock grants, and 2 gifts.

Congress

2 members of Congress traded AMTM in the last three years: 0 buys and 1 sale. 1 member listed it in 2025 annual reports.

All Congress trades
  1. William R. Keating D-MA-9 Sell $1K–$15K Oct 31, 2024 filed Nov 6, 2024
  2. Thomas H. Kean, Jr. R-NJ-7 Exchange $1K–$15K Sep 30, 2024 filed Oct 15, 2024
  3. Thomas H. Kean, Jr. R-NJ-7 Exchange $1K–$15K Sep 30, 2024 filed Oct 15, 2024
  4. Thomas H. Kean, Jr. R-NJ-7 Exchange $1K–$15K Sep 30, 2024 filed Oct 15, 2024
  5. Thomas H. Kean, Jr. R-NJ-7 Exchange $1K–$15K Sep 30, 2024 filed Oct 15, 2024

SEC filings

Recent issuer filings from EDGAR, 16 shown.

Filed Form Detail Links
8-K 5.02,9.01 Filing Doc
10-Q FORM 10-Q Filing Doc
8-K 2.02,9.01 Filing Doc
SCHEDULE 13G — Filing Doc
10-Q FORM 10-Q Filing Doc
8-K 2.02,9.01 Filing Doc
SCHEDULE 13G/A — Filing Doc
8-K 1.01 Filing Doc
SCHEDULE 13G/A — Filing Doc
10-Q FORM 10-Q Filing Doc
8-K 5.07 Filing Doc
8-K 2.02,9.01 Filing Doc
DEF 14A FORM DEF 14A Filing Doc
DEFA14A Filing Doc
10-K FORM 10-K Filing Doc
8-K 2.02,9.01 Filing Doc

Source: SEC EDGAR submissions, updated 20 days ago. All on EDGAR

Financials

US-GAAP annual figures by fiscal year, as tagged in Form 10-K. Each value links to its SEC filing.

Income statement

Metric FY2024 FY2025
Revenue $8.39B $14.39B
Gross profit * — $1.51B
Gross margin * — 10.5%
Net income -$82M $66M
Net margin * -1.0% 0.5%

Balance sheet

Metric FY2024 FY2025
Total current assets $3.08B $3.11B
Total non-current assets * $8.89B $8.35B
Total assets $11.97B $11.46B
Total current liabilities $1.96B $2.35B
Total non-current liabilities * $5.46B $4.49B
Total equity $4.46B $4.5B

Cash flow

Metric FY2024 FY2025
Cash from operations $47M $543M
Cash from investing $475M $228M
Cash from financing -$382M -$790M
Net change in cash $147M -$15M

Source: SEC companyfacts (US-GAAP 10-K). A * marks a computed figure, not a single XBRL tag. Fiscal years are as the issuer labels them. Follow The Filings does not adjust or audit these figures.

Ownership over time

13Fs that reported it each quarter. Click a bar for that quarter’s holders.

Further reading

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