---
title: "Amentum Holdings Inc. Stock Falls Wednesday, Underperforms Market"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/294264319.md"
description: "Amentum Holdings Inc. (AMTM) shares fell 7.08% to $21.80 on Wednesday, underperforming the broader market as the S&P 500 and Dow Jones also declined. This drop ended a five-day winning streak for the stock. Trading volume of 2.6 million exceeded the 50-day average, while the stock remains significantly below its 52-week high of $38.11."
datetime: "2026-07-29T21:19:49.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/294264319.md)
  - [en](https://longbridge.com/en/news/294264319.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/294264319.md)
generator: "portal-rs"
---

# Amentum Holdings Inc. Stock Falls Wednesday, Underperforms Market

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

Shares of Amentum Holdings Inc. (AMTM) shed 7.08% to $21.80 Wednesday, on what proved to be an all-around dismal trading session for the stock market, with the S&P 500 Index falling 1.52% to 7,316.15 and Dow Jones Industrial Average falling 2.19% to 51,594.14.

The stock's fall snapped a five-day winning streak.

Amentum Holdings Inc. closed 42.80% short of its 52-week high of $38.11, which the company achieved on February 6th.

Trading volume (2.6 M) eclipsed its 50-day average volume of 2.0 M.

Data source: Dow Jones Market Data, FactSet. Data compiled July 29, 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

07-29-26 1719ET

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