---
title: "Amentum Holdings Inc. Stock Rises Thursday, Still Underperforms Market"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/297960433.md"
description: "Amentum Holdings Inc. (AMTM) shares rose 1.06% to $20.11 on Thursday, mirroring the broader market's positive session where the S&P 500 and Dow Jones also gained. Despite the rise, AMTM underperformed the market, trading significantly below its 52-week high of $38.11. Trading volume was lower than the 50-day average."
datetime: "2026-09-03T21:18:28.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/297960433.md)
  - [en](https://longbridge.com/en/news/297960433.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/297960433.md)
generator: "portal-rs"
---

# Amentum Holdings Inc. Stock Rises Thursday, Still Underperforms Market

This article was automatically generated by MarketWatch using technology from Automated Insights.

Shares of Amentum Holdings Inc. (AMTM) rose 1.06% to $20.11 Thursday, on what proved to be an all-around positive trading session for the stock market, with the S&P 500 Index rising 1.06% to 7,747.71 and the Dow Jones Industrial Average rising 1.18% to 53,686.11.

Amentum Holdings Inc. closed 47.23% short of its 52-week high of $38.11, which the company reached on February 6th.

Trading volume (1.5 M) remained 701,756 below its 50-day average volume of 2.2 M.

Data source: Dow Jones Market Data, FactSet. Data compiled September 3, 2026.

This content was created by MarketWatch, which is operated by Dow Jones & Co. MarketWatch is published independently from Dow Jones Newswires and The Wall Street Journal.

(END) Dow Jones Newswires

09-03-26 1718ET

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---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**