# Amentum Holdings, Inc. (AMTM)

> Amentum Holdings, Inc. (AMTM) trades at $22.73 (-1.73%) as of 7:52:55 PM EST on Nov 11, 2026, +22.73% over the past month. Market cap is $5.66B, with 7.2 days to cover in short interest.

Canonical: https://massive.com/quote/amtm
Data as of: 2026-11-12T00:52:55.260Z (15-minute delayed)
Source: Massive (https://massive.com/docs/llms.txt)

## Price

**$22.73** -0.40 (-1.73%)
At close · 15-minute delayed
NYSE · usd

After hours: **$22.71** -0.02 (-0.09%)
As of 7:52:55 PM EST on Nov 11, 2026 · After hours

## Stock performance

How Amentum Holdings, Inc. (AMTM) stock has performed from one day to one year, with its 52-week range.

| Period | Return |
| --- | --- |
| 1D | -1.73% |
| 1W | +2.25% |
| 1M | +22.73% |
| YTD | -21.62% |
| 1Y | -1.00% |
| 52-wk range | $17.72 – $38.11 |

From daily closes through Nov 11, 2026.

## Key statistics

Today's trading snapshot for AMTM: day range, open, previous close, volume and market cap.

| Measure | Value |
| --- | --- |
| Day range | $22.42 – $23.16 |
| Open | $23.16 |
| Prev close | $23.13 |
| Volume | 1.38M |
| Market cap | $5.66B |
| Shares out | 244.51M |

## Valuation and profitability ratios

Valuation and profitability ratios for Amentum Holdings, Inc.: P/E, P/S, P/B, ROE and more.

| Measure | Value |
| --- | --- |
| P/E | 27.72 |
| P/S | 0.40 |
| P/B | 1.20 |
| P/FCF | 11.93 |
| ROE | 4.3% |
| ROA | 1.8% |
| Debt/Equity | 0.81 |
| Div yield | 0.00% |

As of Nov 10, 2026

## Insider trading

[Amentum Holdings, Inc. (AMTM) insider trading](https://massive.com/quote/amtm/insider-trading.md): open-market Form 4 buys and sells by Amentum Holdings, Inc. insiders over the last 12 months.

## 8-K filings

Material corporate events Amentum Holdings, Inc. has disclosed to the SEC on Form 8-K.

- Oct 2, 2026 · Executive compensation change
  “The Board of Directors of Amentum Holdings, Inc. approved an amendment and restatement of Steven J. Demetriou's, the Executive Chair of the Amentum Holdings Board of Directors, employment agreement with the Company. Under the Employment Agreement, effective September 28, 2026, Mr. Demetriou's base salary is $625,000 while his bonus/short-term incentive is 100% of his base salary. In addition, his long-term incentive (LTI) opportunity is a total intended target value at grant of $1,250,000; the agreement was amended to remove severance obligations, except for a pro-rata bonus and full accelerated vesting of outstanding LTI awards.”
- Apr 28, 2026 · Debt retirement
  “Amentum, Amentum Services and Amentum Technology used the proceeds of the term facilities, together with other cash on hand of Amentum and its subsidiaries, to repay in full all outstanding borrowings and other amounts under the Existing Credit Agreement and to pay fees and expenses related to the financing.”
- Feb 10, 2026 · Annual meeting results
  “The Annual Meeting of Stockholders of Amentum Holdings, Inc. was held on February 6, 2026. At the annual meeting, Amentum's stockholders voted on the following three proposals and cast their votes as described below. The individuals listed below were elected at the Annual Meeting to serve as directors of the Company until the next annual meeting of shareholders.”
- Mar 7, 2025 · Strategic initiative
  “effective during the three months ended December 27, 2024, the Company announced the realignment of our reporting structure, which resulted in the identification of two reportable segments: Digital Solutions and Global Engineering Solutions.”
- Mar 7, 2025 · Annual meeting results
  “The Annual Meeting of Stockholders of Amentum Holdings, Inc. was held on March 5, 2025. At the annual meeting, Amentum's stockholders voted on the following four proposals... The individuals listed below were elected at the Annual Meeting to serve as directors of the Company until the next annual meeting of shareholders.”

## AMTM short interest

How heavily AMTM is shorted: shares short, days to cover and average daily volume.

| Measure | Value |
| --- | --- |
| Days to cover | 7.2 |
| Short interest | 14.05M |
| Avg volume | 1.95M |

As of Oct 30, 2026 · reported to FINRA twice monthly.

## AMTM news

The latest news and headlines about Amentum Holdings, Inc. (AMTM).

- [Rayonier (RYN) Tops Q3 Earnings and Revenue Estimates](https://www.zacks.com/stock/news/3023631/rayonier-ryn-tops-q3-earnings-and-revenue-estimates?cid=CS-ZC-FT-fundamental_analysis|yseop_template_4-3023631) · Zacks Investment Research · Nov 4, 2026 · negative sentiment
- [Kadant (KAI) Beats Q3 Earnings and Revenue Estimates](https://www.zacks.com/stock/news/3022372/kadant-kai-beats-q3-earnings-and-revenue-estimates?cid=CS-ZC-FT-fundamental_analysis|yseop_template_4-3022372) · Zacks Investment Research · Nov 3, 2026 · neutral sentiment
- [3 Industrial Stocks Under $50 to Buy in October](https://www.fool.com/investing/2026/10/24/3-industrial-stocks-under-50-to-buy-in-october/?source=iedfolrf0000001) · The Motley Fool · Oct 24, 2026 · positive sentiment
- [Can BWXT's Canadian Lab Role Strengthen Nuclear Services Growth?](https://www.zacks.com/stock/news/2987763/can-bwxt-s-canadian-lab-role-strengthen-nuclear-services-growth?cid=CS-ZC-FT-analyst_blog|quick_take-2987763) · Zacks Investment Research · Sep 10, 2026 · positive sentiment
- [Deep Isolation Nuclear Appoints Drilling Veteran Jon Tedrick to Lead World’s First Full-scale Deep Borehole Disposal Demonstration](https://www.globenewswire.com/news-release/2026/06/17/3313246/0/en/Deep-Isolation-Nuclear-Appoints-Drilling-Veteran-Jon-Tedrick-to-Lead-World-s-First-Full-scale-Deep-Borehole-Disposal-Demonstration.html) · GlobeNewswire Inc. · Jun 17, 2026 · neutral sentiment

## About Amentum Holdings, Inc.

Amentum Holdings Inc is an engineering and technology solutions provider serving U.S. and allied government agencies, as well as international and commercial customers across energy and environmental, intelligence, space, defense, civilian and commercial markets. It provides environmental remediation, intelligence and counter-threat solutions, data analytics, engineering and integration, testing, training and citizen services. The company operates through two segments: Digital Solutions, offering digital and data-driven services, and Global Engineering Solutions, providing environmental remediation, nuclear power solutions, platform engineering, sustainment, and supply chain management. majority of its revenue comes from the Global Engineering Solutions segment and from the United States.

| Measure | Value |
| --- | --- |
| Exchange | NYSE |
| Market | stocks |
| Type | CS |
| Currency | USD |
| Industry | SERVICES-BUSINESS SERVICES, NEC |
| Employees | 50K |
| Listed | Sep 24, 2024 |

[Company website](https://www.amentum.com)

## FAQ

### What is the Amentum Holdings, Inc. (AMTM) stock price today?

Amentum Holdings, Inc. (AMTM) is trading at $22.73 (-1.73% on the day) as of 7:52:55 PM EST on Nov 11, 2026. Prices are delayed at least 15 minutes; real-time quotes are available from the Massive API.

### What is Amentum Holdings, Inc.?

Amentum Holdings Inc is an engineering and technology solutions provider serving U.S. and allied government agencies, as well as international and commercial customers across energy and environmental, intelligence, space, defense, civilian and commercial markets.

### What is the short interest in AMTM?

As of Oct 30, 2026, AMTM has 14.05M shares short and 7.2 days to cover.

### What exchange is AMTM listed on?

Amentum Holdings, Inc. (AMTM) trades on NYSE in USD, in the SERVICES-BUSINESS SERVICES, NEC industry.

## Live data

Prices here are 15-minute delayed. For real-time AMTM quotes and the full history behind this page, use the Massive API or MCP server:

- `GET https://api.massive.com/v3/snapshot?ticker.any_of=AMTM`

Requests need a Massive API key. API reference for agents: https://massive.com/docs/llms.txt. Connect an AI agent through the Massive MCP server: https://massive.com/docs/ai-tools.

## Related

- [Amentum Holdings, Inc. (AMTM) insider trading](https://massive.com/quote/amtm/insider-trading.md)
- [SEC 8-K events](https://massive.com/quote/sec-filings/8-k.md)
- [Markets overview](https://massive.com/quote/index.md)

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