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    Is AECOM (ACM) Below Fair Value Following Its New Silicon Valley Water Project Win?

    Simply Wall St·09/04/2026 08:36:42
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    Why AECOM’s new water project win is catching investor attention

    AECOM (ACM) has been selected by the Santa Clara Valley Water District for the Pure Water Silicon Valley Demonstration Facility, a contract focused on advanced water purification and public education infrastructure.

    The project covers design of a direct potable reuse pilot plant and a LEED certified, solar ready learning center, giving investors fresh context for AECOM’s role in specialized water infrastructure and related services.

    AECOM’s latest contract arrives after a tough run for the stock, with the share price down 30.7% year to date and about 11.8% over the past month, while the 1 year total shareholder return has declined 46.2% and the 5 year total shareholder return is modestly positive at 6.3%. This suggests that recent weakness has weighed on longer term holders even as new project wins start to reset expectations around future growth and risk.

    Spot similar infrastructure and water-focused opportunities by scanning our hand picked 39 power grid technology and infrastructure stocks.

    Bulls see AECOM’s water expertise and fresh contract wins as a reset opportunity. Bears point to a sharply weaker share price and mixed long term returns. Which case does today’s valuation support next?

    Most Popular Narrative: 25.7% Undervalued

    AECOM’s last close at $66.83 sits well below the most followed narrative fair value of $90.00. This frames the current weakness as a valuation gap rather than a growth ceiling.

    AECOM's Q3 is not a clean quarter. It is a revealing one.

    A legacy Construction Management project created a $337 million hole in reported profitability.

    At the same time, customers awarded AECOM $4.2 billion of new work, design generated a 1.6x book-to-burn ratio, and backlog reached a record $27.8 billion.

    Read the complete narrative.

    Interested in why a company with a record backlog, double digit underlying margins and a reset Q3 still screens as undervalued according to andrei9868’s narrative? The fair value hinges on how much weight you place on earnings power from design work and advisory fees compared with a single Construction Management charge. The detailed assumptions sit behind that $90.00 figure, not in the headline loss. The gaps between reported EPS, adjusted EPS and backlog are where this story really lives.

    Result: Fair Value of $90.00 (UNDERVALUED)

    Have a read of the narrative in full and understand what's behind the forecasts.

    However, AECOM still faces real pressure if further legacy project issues emerge or if project wins slow and that record US$27.8b backlog stops growing as anticipated.

    Find out about the key risks to this AECOM narrative.

    Next Steps

    If the mixed messages around AECOM leave you unsure, move quickly from headline impressions to hard numbers and form your own view using the 4 key rewards and 2 important warning signs.

    Looking for more investment ideas beyond AECOM?

    If AECOM has sharpened your focus on opportunity and risk, do not stop here. Use the Simply Wall St screener to surface fresh ideas before others do.

    This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.