Shares Outstanding for Amentum Holdings (AMTM)
According to Amentum Holdings's latest reported financial statements, the company's latest reported diluted shares outstanding is 245.00M. Diluted weighted-average shares outstanding is the share count used to compute per-share metrics like EPS. Buybacks lower it; new issuance, stock-based compensation, and convertible securities raise it. Multiply by the stock price for market capitalization.
Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .
AMTM
Currently viewingShares OutstandingSwitch metric
Latest period
245.00M
YoY change
+168.1%
5Y CAGR
N/A
Peak year (2025)
244.00M
Latest annual
244.00M
Shares Outstanding history chart for Amentum Holdings (AMTM) from 2021 to 2025
Shares Outstanding history table for Amentum Holdings (AMTM) from 2021 to 2025
| Fiscal year | Period ended | Reported | Shares Outstanding | YoY | YoY change |
|---|---|---|---|---|---|
| 2025 | 244.00M | +168.1% | +153.00M | ||
| 2024 | 91.00M | +1.1% | +1.00M | ||
| 2023 | 90.00M | 0.0% | 0 | ||
| 2022 | 90.00M | 0.0% | 0 | ||
| 2021 | 90.00M | — | — |
Shares Outstanding values are taken from Amentum Holdings's reported income statements (10-Q quarterly and 10-K annual filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the date the filing was reported; YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.
Analysis
The 2025 reading of Amentum Holdings (AMTM) diluted shares outstanding is 244.00M – surged 168.1% year-over-year.
Across the available history, diluted shares outstanding reached its high of 244.00M in 2025 and its low of 90.00M in 2021.
Amentum Holdings (AMTM) sits 9th of 8 Industrials peers we track on this metric, against a peer median of 618.15M.
Amentum Holdings Shares Outstanding by Year
Amentum Holdings Shares Outstanding 2025: 244.00M
Amentum Holdings diluted shares outstanding in 2025 was 244.00M, surged 168.1% from 2024. This figure represents the highest annual value in the available history.
Amentum Holdings Shares Outstanding 2024: 91.00M
Amentum Holdings diluted shares outstanding in 2024 was 91.00M, edged up 1.1% from 2023.
Amentum Holdings Shares Outstanding 2023: 90.00M
Amentum Holdings diluted shares outstanding in 2023 was 90.00M, edged up 0.0% from 2022.
Amentum Holdings Shares Outstanding 2022: 90.00M
Amentum Holdings diluted shares outstanding in 2022 was 90.00M, edged up 0.0% from 2021.
Amentum Holdings Shares Outstanding 2021: 90.00M
Amentum Holdings diluted shares outstanding in 2021 was 90.00M.
See more financial history for Amentum Holdings (AMTM).
Sector peers — Shares Outstanding
Companies in the same sector as Amentum Holdings, ranked by their latest diluted shares outstanding.
| Company | Shares Outstanding | Sector |
|---|---|---|
| RTX (RTX) | 1.36B | Industrials |
| GE Aerospace (GE) | 1.07B | Industrials |
| Boeing (BA) | 762.30M | Industrials |
| Honeywell International (HON) | 642.80M | Industrials |
| Union Pacific (UNP) | 593.50M | Industrials |
| Caterpillar (CAT) | 469.00M | Industrials |
| Eaton Corporation (ETN) | 389.50M | Industrials |
| Deere & Company (DE) | 271.70M | Industrials |
Frequently asked questions
What is Amentum Holdings's diluted shares outstanding?
Latest reported diluted shares outstanding for Amentum Holdings (AMTM) is 245.00M (period ending April 3, 2026).
How has Amentum Holdings diluted shares outstanding changed year-over-year?
Amentum Holdings (AMTM) diluted shares outstanding changed +168.1% year-over-year on the latest annual filing.
When did Amentum Holdings diluted shares outstanding hit its highest annual value?
Amentum Holdings diluted shares outstanding reached its highest annual value of 244.00M in 2025.
What was Amentum Holdings diluted shares outstanding in 2024?
Amentum Holdings (AMTM) diluted shares outstanding in 2024 was 91.00M.
What was Amentum Holdings diluted shares outstanding in 2025?
Amentum Holdings (AMTM) diluted shares outstanding in 2025 was 244.00M.
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