AECOM (ACM) Stock Price & How to Invest
Last updated October 2026
Short answer
AECOM (NYSE: ACM) is the largest infrastructure consulting firm in the world by design revenue, an asset-light engineering and program management business with roughly $15.4 billion of trailing revenue, a record backlog as of its spring report, and a share price near $59 as of October 16, 2026, down about 39% year to date and 55% over the past year. Most investors hold it as an industrials or infrastructure position, and the debate in 2026 has moved from cash conversion alone to cash conversion plus a one-off charge on a legacy project that pushed the latest quarter to a loss.
ACM stock price
As of 2026-11-04, AECOM (ACM) last closed at $68.20, down 48.4% over the past year. Over the past 52 weeks it has traded between $58.02 and $133.80.
Prices are daily closing prices from Yahoo Finance and may be delayed. For the live quote, check your broker or AECOM's investor relations page. Walnut is informational, not investment advice.
What does AECOM (ACM) do?
AECOM is in the business of engineering expertise, not steel. The company plans, designs, engineers and manages infrastructure programs for governments and large corporations: highways and transit systems, water and wastewater treatment, airports and ports, environmental remediation, flood defenses, and increasingly the power and site work behind data centers. It reports in three segments, Americas (about $2.9 billion of quarterly revenue), International (about $890 million), and a small AECOM Capital investment arm, and employs roughly 51,000 people. Critically, AECOM exited self-perform construction years ago, so it no longer takes fixed-price building risk on its own balance sheet. What is left is a professional services business with very little capital intensity, which is why return on equity has historically run high on about $3.33 billion of debt against $1.02 billion of cash (June 30, 2026).
The investment picture through mid-2026 was a split screen, and it has since darkened. On one side, demand and profitability look excellent: fiscal second quarter 2026 (the quarter ended March 2026, reported May 11) delivered record second-quarter adjusted EBITDA of $312 million at a 16.5% margin, adjusted EPS of $1.59 up 27%, total backlog at a record $26.2 billion up 8%, and a design book-to-burn ratio of 1.2, and management raised full-year adjusted EPS guidance to $5.90 to $6.10. On the other side, cash collapsed in the same quarter: operating cash flow came in at $4 million, down 98% year over year, and adjusted free cash flow swung to negative $27.4 million from positive $178.4 million a year earlier. CFO Gaurav Kapoor attributed it to longer-than-anticipated claim resolution on certain projects, and the 10-Q showed significant claims recorded in contract assets rising to roughly $680 million from about $400 million six months earlier. Shares fell about 12% the next day and have not recovered.
The fiscal third quarter (ended June 2026) was worse. Revenue fell ~14% year over year to ~$3.59 billion, and AECOM reported a net loss of ~$87 million, or about -$0.50 a share against a consensus near $1.46, after a one-off charge on a legacy project, and it lowered its full-year guidance; one fund letter put the share price reaction at about -15%. Analyst consensus for fiscal 2026 EPS now sits near $4.01, well below the $5.90 to $6.10 adjusted range management had guided to in May. At ~$59.12 on October 16, 2026 (market cap ~$7.6 billion), the stock was near its 52-week low of ~$56.39, trading around 9.3 times next year's consensus EPS of ~$6.36 and ~10.9 times EV/EBITDA. Fiscal fourth quarter results are scheduled for November 17, 2026, with consensus at ~$1.59 EPS on ~$4.1 billion of revenue.
What's driving AECOM (ACM)?
1. A record backlog that is growing faster than revenue.
Total backlog reached a record $26.2 billion in the fiscal second quarter of 2026, up 8% year over year, with the design business booking 1.2 dollars of new work for every dollar burned. International backlog was the standout at a record $8.1 billion, up 25%, driven by wins in the United Kingdom and the Middle East. Management has also described double-digit pipeline growth for three consecutive quarters, which is the leading indicator that matters most in a bookings business. The order book is still being added to after the spring report: in October 2026 an AECOM-led joint venture was appointed program management consultant for Ontario's Highway 413, and the company named Dwight Pullen to lead its global Transportation business.
2. Margin expansion in an asset-light model.
Americas adjusted operating margin on net service revenue hit a second-quarter record of 20.0%, up 60 basis points, and the consolidated segment margin target for fiscal 2026 is 16.8%. Management's stated long-term goal is segment margins above 20% by fiscal 2028, alongside 5% to 8% organic net service revenue growth and at least 15% annual growth in adjusted EPS and free cash flow per share. Because the business carries almost no capital intensity, incremental margin flows through to owners rather than into plants and equipment. The legacy-project charge in the fiscal third quarter of 2026 is a reminder that the model is not free of execution risk: trailing operating margin on Yahoo Finance data was about -1.8% as of June 2026, and the long-term margin targets now have a harder starting point.
3. Sustained public infrastructure and water spending.
AECOM's revenue is anchored in multi-year government programs (transportation, water, environment, flood resilience) that are funded and scoped years before the design work is billed, which makes the top line less cyclical than a construction contractor's. Water and environmental work in particular has structural drivers independent of the economic cycle, including aging treatment plants, PFAS remediation and climate adaptation. The company has also been pushing an advisory practice and AI-enabled delivery to widen the addressable market beyond traditional design fees.
4. Steady share count reduction and a growing dividend.
AECOM returned $155 million to shareholders in the fiscal second quarter alone and more than $3.5 billion since September 2020, shrinking the diluted share count from about 161 million in fiscal 2020 to roughly 128.5 million today, a decline near 20%. The dividend, currently $1.24 a share for a yield around 2.1% at the October 2026 price, has compounded at roughly a 20% annual rate. That combination means per-share results can grow meaningfully faster than net service revenue, which is exactly what management's 15%-plus EPS framework assumes.
What are the risks to AECOM (ACM)?
The cash flow problem remains live and has been joined by an earnings problem: the fiscal third quarter of 2026 included a one-off charge on a legacy project that produced a ~$87 million net loss and a guidance cut. Earlier, operating cash flow fell 98% in the fiscal second quarter of 2026 and free cash flow went negative, while significant claims recorded in contract assets and other non-current assets grew to roughly $680 million from about $400 million at the September 2025 fiscal year end. Full-year free cash flow guidance of roughly $400 million therefore depends on collecting a large amount in the back half, and if claims resolution keeps slipping, the reported earnings growth will look increasingly disconnected from cash. Several plaintiffs' firms (Pomerantz, Glancy Prongay, Schall, Howard G. Smith, Frank R. Cruz) announced securities-fraud investigations in May and June 2026 over the disclosures around that quarter; these were described as investigations rather than a filed class action as of August 2026, and their status should be re-checked after the third-quarter charge. Government client concentration cuts both ways, exposing the company to budget cycles, appropriations delays and procurement slowdowns, and International net service revenue was already declining 3% in constant currency. Several brokers cut price targets in October 2026 (Truist to $75 from $85, UBS to $103 from $106, RBC to $89 from $90), and fiscal fourth quarter results on November 17, 2026 are the next catalyst in either direction.
What is the AECOM (ACM) forecast?
12 analysts publish price targets on ACM, averaging $83.92 against a $66.16 price as of November 2026, or +26.8%. The published targets run from $65.00 to $104.00, a moderate spread, and the ratings split 11 buy, 2 hold, 0 sell. Over the last six months there have been 0 raises and 12 cuts among the published actions. A price target is what an analyst published on a date, not a prediction, and sell-side ratings skew positive across the whole market.
Read the full ACM forecast and price target for the target table, the recent rating actions by firm, and how the consensus has shifted.
Is ACM a buy or a sell?
We give no verdict on AECOM. Both cases are real, which is why the question is contested at all, so here is the strongest version of each.
The case for buying. A record backlog that is growing faster than revenue. Total backlog reached a record $26.2 billion in the fiscal second quarter of 2026, up 8% year over year, with the design business booking 1.2 dollars of new work for every dollar burned. The most optimistic published target, $104.00, assumes this works close to its best case.
The case against. The cash flow problem remains live and has been joined by an earnings problem: the fiscal third quarter of 2026 included a one-off charge on a legacy project that produced a ~$87 million net loss and a guidance cut. The most pessimistic target, $65.00, is roughly what ACM is worth if this bites instead.
Read the full bull and bear case on ACM, including what would have to change to break either one. Walnut is not an investment adviser.
Has AECOM (ACM) split its stock?
No. AECOM (ACM) has not split its stock in the last 10 years. That is a statement about the window we check rather than about the company’s entire history, so an older split is possible. It also matters less than it once did: fractional shares mean a high price per share no longer keeps smaller investors out, which removed most of the practical reason to split.
How is AECOM (ACM) valued? (approximate, October 2026)
A simple financial snapshot. These are approximations and refresh quarterly; for current figures see AECOM's investor relations page or your broker.
- Revenue (TTM): ~$15.4 billion (fiscal Q3 2026 down ~14% yoy)
- Fiscal Q3 2026 EPS: ~-$0.50 vs ~$1.46 consensus (legacy-project charge)
- Net income (TTM): ~$373 million (~1.9% margin)
- P/E (trailing / forward): ~20.8x / ~9.3x
- EV / EBITDA: ~10.9x
- Dividend: $1.24 a share, ~2.1% yield
- Market cap: ~$7.6 billion at ~$59 a share
At ~$59 on October 16, 2026, AECOM trades near 9.3 times consensus fiscal 2027 EPS of ~$6.36, a lower multiple than in August, because the market now doubts both cash conversion and near-term earnings after the third-quarter charge and guidance cut. Trailing GAAP figures are weak (net income of ~$373 million on ~$15.4 billion of revenue, a trailing P/E near 21), so the forward and trailing multiples tell very different stories. Analysts' mean target of ~$84 across 12 firms sits well above the share price, which shows how wide the disagreement has become.
Who competes with AECOM (ACM)?
Global infrastructure design and consulting firms
Jacobs, WSP Global, Stantec, AtkinsRealis and Arcadis compete directly for the same transportation, water and environmental design mandates, often bidding on the identical public tenders. Jacobs is the closest structural comparable in the United States after both companies shed lower-margin services businesses to become asset-light consultancies. Tetra Tech overlaps heavily in water and environmental work, an area where AECOM has been pushing hardest, and these firms are also the direct competitors for scarce senior engineering talent.
Program management and government services contractors
Parsons, ICF International, KBR, Amentum and Leidos compete for federal and defense-adjacent program management, environmental remediation and advisory contracts. These names share AECOM's exposure to appropriations cycles and procurement timing, and they are frequently teaming partners as well as rivals on large joint-venture pursuits. Their multiples are a useful cross-check because the market often reprices the whole group together when government budget headlines move.
Engineering and construction contractors
Fluor, Quanta Services, MasTec and Sterling Infrastructure sit downstream of AECOM in the project lifecycle and occasionally compete for integrated design-build awards. AECOM deliberately left self-perform construction, so it carries far less fixed-price execution risk than this group, but it also does not capture the larger dollar value of the build phase. When investors rotate toward infrastructure spending as a theme, these contractors often absorb the flows first.
What stocks are similar to AECOM (ACM)?
Other names that sit close to ACM: same theme, named as a direct competitor, or held beside it in the same funds. Each entry says which. Worth a look if you are thinking about diversification within a thesis rather than concentration on one ticker.
How to invest in AECOM (ACM)
There are three common ways to get ACM exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it, which spreads the position across many companies. Or build it into a focused thematic portfolio, so ACM sits alongside other stocks that express the same thesis.
Walnut takes the portfolio route. Describe a thesis where ACM fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.
New to this? Start with how to invest in stocks, see how to analyze a stock with AI, or compare the best AI stock analyzers.
The bottom line on AECOM (ACM)
AECOM is a high-return infrastructure consultancy with a large order book, priced at a steep discount to its peer group because cash has not shown up on schedule and a legacy-project charge has now hit reported earnings and guidance.
More on AECOM (ACM)
Whether ACM is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is ACM a buy or a sell?, and where the stock could go from here in the ACM stock forecast.
For income investors, whether ACM pays a dividend and how the payout looks is covered in does ACM pay a dividend? And to weigh ACM against a peer, read the full side-by-side comparisons: ACM vs WSPOF and ACM vs STN.
Wondering how ACM fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in AECOM with AI
Connect the broker you already use and ask Walnut's AI how ACM fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What does AECOM actually do?
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It is a professional infrastructure consulting firm: planning, engineering design, architecture, environmental services, advisory and program management for governments and large corporations. Projects span transportation, water and wastewater, airports, environmental remediation, flood resilience and energy. Roughly 51,000 employees generate about $15.4 billion of trailing revenue across three segments, Americas, International and a small AECOM Capital investment arm. AECOM no longer performs its own construction.
Why has the stock fallen so much in 2026?
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Cash, not earnings. On May 11, 2026, AECOM reported fiscal second quarter operating cash flow of $4 million, down 98% year over year, and adjusted free cash flow of negative $27.4 million against positive $178.4 million a year earlier. Shares fell about 12% the next day to $69.95. That came on top of an earlier revenue miss. The fiscal third quarter then brought a one-off charge on a legacy project, a net loss of ~$87 million and lowered full-year guidance. By October 16, 2026 the stock was ~$59.12, down ~39% year to date and from a 52-week high of $135.52.
What is the claims issue that hurt cash flow?
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AECOM performs work on projects where the final compensation is disputed or subject to change orders, and those amounts sit on the balance sheet as claims within contract assets until they are settled and collected. CFO Gaurav Kapoor cited longer-than-anticipated claim resolution on certain projects. Significant claims recorded in contract assets and other non-current assets grew to roughly $680 million as of March 31, 2026, from about $400 million at the September 2025 fiscal year end.
Is AECOM facing a securities class action?
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As of August 2026, several plaintiffs' firms including Pomerantz, Glancy Prongay, Schall, Howard G. Smith and the Law Offices of Frank R. Cruz have publicly announced securities-fraud investigations covering disclosures around the May 2026 quarter. Public filings and firm announcements describe these as investigations soliciting shareholders rather than a filed complaint with a class period and lead plaintiff deadline. That distinction can change quickly, so it is worth re-checking the current status.
Is the backlog still growing?
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Yes. Total backlog reached a record $26.2 billion in fiscal Q2 2026, up 8% year over year, with Americas at $18.1 billion and International up 25% to a record $8.1 billion on United Kingdom and Middle East wins. The design business booked 1.2 dollars of work for every dollar burned, and management described double-digit pipeline growth for a third consecutive quarter. Demand has not been the problem in this story. Newer wins include the Ontario Highway 413 program management role announced in October 2026; the updated backlog figure will come with the November 17 report.
How is AECOM valued relative to its peers?
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At ~$59 a share and a ~$7.6 billion market cap as of October 16, 2026, AECOM trades near 9.3 times consensus forward earnings and about 10.9 times EV/EBITDA. Management's investor materials from earlier in 2026 put the peer group closer to 13.3 times EV/adjusted EBITDA despite AECOM carrying higher segment margins (about 16.8% target versus a peer average near 15.2%). Analyst price targets average near $84, well above where the shares trade, which reflects how wide the gap between expected fundamentals and price has become.
Does AECOM pay a dividend?
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Yes. The current annual dividend is $1.24 a share, a yield of roughly 2.1% at the ~$59 share price of mid-October 2026, and it has grown at approximately a 20% compound annual rate. The larger part of capital return has come through repurchases: more than $3.5 billion returned since September 2020, cutting diluted shares from about 161 million in fiscal 2020 to roughly 128.5 million now. That shrinkage is a meaningful part of the per-share growth math.
How does AECOM tend to behave in a portfolio?
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Like a government-linked industrial services name rather than a cyclical builder. Beta runs near 0.92, revenue is anchored in multi-year public programs, and the business carries no self-perform construction risk, which historically dampened its swings versus engineering and construction contractors. In 2026 that pattern broke: cash flow disclosures produced double-digit single-day moves. The stock is down ~55% over the year to October 16, 2026, and fiscal fourth quarter results are scheduled for November 17, 2026.
How did AECOM do in its latest quarter?
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In the fiscal third quarter of 2026 (ended June 30), AECOM's revenue fell about 14% year over year to ~$3.59 billion, and it reported a net loss of ~$87 million, about -$0.50 a share against a ~$1.46 consensus, after a one-off charge on a legacy project. It lowered full-year guidance. Fiscal fourth quarter results are due November 17, 2026, with consensus at ~$1.59 EPS on ~$4.1 billion of revenue.
How has ACM stock performed in 2026?
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ACM closed at ~$59.12 on October 16, 2026, down about 38.7% year to date and ~54.9% over one year, close to its 52-week low of ~$56.39 and far below the ~$135.52 high. The declines followed the May cash flow shortfall and the fiscal third-quarter charge. Analysts still rated it a consensus strong buy with a mean target near $84, though several trimmed targets in October.
Guides that feature ACM
ACM is one of the names covered in these guides. Each one puts the stock next to its peers so you can see where it fits rather than judging it alone.
Walnut is informational, not investment advice. Financial figures on this page are approximations; always verify current numbers with AECOM's investor relations page or your broker before making investment decisions.