---
title: "Amentum Holdings Inc. Stock Rises Tuesday, Outperforms Market"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/299097262.md"
description: "Amentum Holdings Inc. (AMTM) shares rose 2.03% to $20.14 on Tuesday, outperforming the broader market which saw declines in the S&P 500 and Dow Jones Industrial Average. This marks the stock's second consecutive day of gains. The stock remains significantly below its 52-week high of $38.11 reached in February. Trading volume was slightly below the 50-day average."
datetime: "2026-09-15T21:18:30.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/299097262.md)
  - [en](https://longbridge.com/en/news/299097262.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/299097262.md)
generator: "portal-rs"
---

# Amentum Holdings Inc. Stock Rises Tuesday, Outperforms Market

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

Shares of Amentum Holdings Inc. (AMTM) rallied 2.03% to $20.14 Tuesday, on what proved to be an all-around rough trading session for the stock market, with the S&P 500 Index falling 0.45% to 7,585.73 and Dow Jones Industrial Average falling 0.63% to 52,093.11.

This was the stock's second consecutive day of gains.

Amentum Holdings Inc. closed 47.15% short of its 52-week high of $38.11, which the company reached on February 6th.

Trading volume (1.9 M) remained 119,981 below its 50-day average volume of 2.1 M.

Data source: Dow Jones Market Data, FactSet. Data compiled September 15, 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

09-15-26 1718ET

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