AECOM Guides FY2026 EPS 32% Below Consensus, Amentum Revenue Misses

For investors tracking the infrastructure and government services sector, Monday's dual guidance updates from AECOM and Amentum raise red flags. AECOM's massive 32% EPS guidance shortfall signals potential structural margin issues, while Amentum's top-line miss, though modest, suggests softer contract wins. With shares already under pressure, these new disclosures could trigger further analyst downgrades and extend the sectors' recent downtrend.

Engineering and infrastructure services stocks stumbled on Monday, August 10, 2026, as both Amentum (NYSE: AMTM) and AECOM (NYSE: ACM) issued sobering fiscal 2026 earnings guidance that disappointed investors. AECOM's update was the more severe, with full-year EPS guidance of $3.95 to $4.15, a staggering 32% below the consensus estimate of $5.97. The company's accompanying quarterly results compounded the shock: a reported loss of $0.50 per share against expectations of a $1.46 profit, despite revenue of $3.59 billion that handily beat the $2.01 billion estimate. The divergence suggests massive margin compression or one-time charges. Amentum's guidance was less dramatic but still missed on revenue, guiding to $13.8–$14.0 billion versus the $14.2 billion consensus, while EPS of $2.40–$2.50 essentially bracketed the $2.41 estimate. Both stocks were punished, with AECOM shedding $2.84 to $73.00 (a 3.7% intraday drop) and Amentum down $0.35 to $24.42.

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Amentum's guidance was less dramatic but still missed on revenue, guiding to $13.8–$14.0 billion versus the $14.2 billion consensus, while EPS of $2.40–$2.50 essentially bracketed the $2.41 estimate.

The dual disappointments highlight growing headwinds in the government services and infrastructure sector. AECOM, the larger of the two with a $9.38 billion market cap, derives significant revenue from federal and state contracts. Its drastic guidance cut may reflect project delays, cost overruns, or the unwinding of pandemic-era stimulus-fueled backlogs. The company’s negative earnings quarter, when revenue was actually above expectations, suggests expenses surged—likely from labor, materials, or impairment charges. Amentum, with a $5.97 billion market cap and a 40x P/E multiple, had previously been seen as a growth play after its spinoff from AECOM in 2020; its guidance, while not alarming on EPS, fell short of the topline targets, indicating perhaps slower contract wins or execution challenges.

From an analyst perspective, sentiment had already been souring. Amentum faced a string of downgrades and price-target cuts: Weiss Ratings moved to a ‘hold (c-)’ in June, JPMorgan cut its target to $31 in May, Bank of America trimmed to $30 in July, though Zacks Research upgraded to ‘strong buy’ on July 21. The consensus rating remains Hold with an average target of $32, well above the current price, signaling that some see value at these levels. AECOM saw KeyCorp reduce its target from $115 to $101 (still implying significant upside) prior to the guidance announcement. The divergence between price targets and actual guidance underscores the risk that further negative revisions loom if the new fiscal year outlook proves even partially accurate.