Amentum Holdings Stock Drops to $19.78 as 52-Week Low Amid Earnings and Analyst Revisions

Amentum Holdings LLC, a defense and aerospace services provider, reached a new 52-week low of $19.78 on September 8, 2026, as the company’s stock performance continues to lag behind its historical highs. The decline represents nearly a 48% drop from its 52-week peak of $38.11, with the share price down 16.7% over the past year and 33% over the last six months. Despite this underperformance, the company reported stronger-than-expected third-quarter 2026 earnings, with adjusted diluted earnings per share (EPS) of $0.67, surpassing Wall Street’s forecast of $0.40. Revenue for the quarter stood at approximately $3.5 billion, though profitability gains helped the company raise its full-year outlook, citing improved cash generation amid modest revenue growth.