---
title: "Amentum Holdings Inc. Stock Falls Tuesday, Underperforms Market"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/286968660.md"
description: "Amentum Holdings Inc. (AMTM) shares fell 2.83% to $22.63 on Tuesday, underperforming the market as the S&P 500 and Dow Jones also declined. The stock is currently 40.62% below its 52-week high of $38.11 reached on February 6th. Trading volume was 2.5 million, surpassing the 50-day average of 1.9 million."
datetime: "2026-05-19T21:18:07.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286968660.md)
  - [en](https://longbridge.com/en/news/286968660.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286968660.md)
---

# Amentum Holdings Inc. Stock Falls Tuesday, Underperforms Market

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

Shares of Amentum Holdings Inc. (AMTM) slipped 2.83% to $22.63 Tuesday, on what proved to be an all-around grim trading session for the stock market, with the S&P 500 Index falling 0.67% to 7,353.61 and Dow Jones Industrial Average falling 0.65% to 49,363.88.

Amentum Holdings Inc. closed 40.62% below its 52-week high of $38.11, which the company achieved on February 6th.

Trading volume (2.5 M) eclipsed its 50-day average volume of 1.9 M.

Data source: Dow Jones Market Data, FactSet. Data compiled May 19, 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

05-19-26 1718ET

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