AECOM: Priced for a Slowdown That Isn't in the Backlog
AECOM ($ACM) is down about 30% YTD and 41% in the past twelve months. It just posted a record backlog, raised guidance for the second straight quarter, and saw three named executives all buy stock in the same window. The main number that scared people (Q2 cash flow) had already recovered by the time the filing went public.
AECOM is currently trading at $67.70; just a year ago it was $115. The company has given back ~40% of its value while its backlog, margins, and earnings have all set records. The market is pricing ACM as though the business is deteriorating, but the filings say the opposite. The people who run the company put their own money on that difference in May.
What AECOM Actually Does
AECOM sells engineering and consulting hours. It designs transportation networks, water systems, environmental remediation, energy and grid projects, and buildings. It then manages the programmes that deliver them. It is not a builder; the company exited self-perform construction years ago. It kept the design fees and shed the fixed-price construction risk that used to sink its margins. What's left is a capital-light professional-services business with a Fortune 500 footprint and $16.1B of revenue in FY2025.
The business reports across three lines: Americas, International, and AECOM Capital. The moat is scale and the relationships it has built. Governments award multi-year framework contracts to a short list of firms that can staff work across an entire country, and AECOM is on most of those lists. That produces a backlog (the value of work already won but not yet delivered), which gives revenue visibility that a project-by-project firm never has. The key metric to watch with this type of business is book-to-burn (wins divided by revenue recognised in the period); above 1 means the backlog is growing faster than the company is working it off.
The Q2 2026 Numbers
AECOM reported its Q2 results on 11 May 2026, it was a record on almost every operating line.
Revenue rose 1% to $3.8B, on a GAAP basis operating income fell 4% to $248M, but net income rose 19% to $184M and diluted EPS rose 22% to $1.42. On an adjusted basis, EPS rose 27% to $1.59, and EBITDA rose 8% to $312M. The segment adjusted operating margin reached 16.5%, +50 basis points, and a second-quarter record. In the Americas, the design business grew net service revenue 8%, and the Americas segment posted a record 20.0% adjusted margin on net service revenue.
The backlog is the headline. Total backlog grew 8% to a record $26.2B, driven by a 1.2 book-to-burn in the design business. That was the 22nd consecutive quarter above 1. The design pipeline reached a record and grew double digits. The international backlog grew 25% YoY.
The balance sheet holds up: cash of about $802M, net leverage of 1.2x, and a share count down to roughly 128M from buybacks. On the back of all this, AECOM raised FY guidance for the second straight quarter to an adjusted EPS of $5.90 to $6.10 (14% growth at the midpoint), with free cash flow of about $400M. The longer-term targets are a 20%+ margin exit rate by 2028 and 15%+ EPS growth a year through 2029.
The Cash Flow Line Everyone Saw
Here is the number that did the damage. Second-quarter operating cash flow was $4M, down 98%, and free cash flow was negative $27M. The stock fell 12% the next day. Read alone, it looks like a company that has stopped generating cash.
The filing gives a reason: delayed payment timing in the Middle East, and slower-than-expected resolution of claims on older projects. On the earnings call, the CFO narrowed the claims issue to two projects for two clients, both bid in 2019 and 2020, and made a point that matters: AECOM has prevailed on each of those resolutions and is now waiting on the cash rather than fighting to win it. Management said Middle East collections had already recovered in Q3, reiterated the ~$400M full-year free cash flow guide, and held its 100%+ conversion target.
Significant claims recorded in contract assets and other non-current assets rose to about $680M, up roughly 70% from about $400M six months earlier. That line historically ran nearer $110M to $170M. This is the real bear point: a growing pile of aged, disputed receivables that still has to turn into cash.
The Insider Picture
In May, three of the most senior people at AECOM bought stock on the open market in the same window: Troy Rudd (CEO) bought 4,225 shares near $71; Lara Poloni (President) bought 4,224 shares near $70.63; and Gaurav Kapoor (CFO) bought 1,420 shares near $71.12. Those purchases came after the drop, not before it, the stock traded near $79 the week before the 12% drop. Douglas Stotlar (director) added roughly 4,470 shares between February and May, and there were no significant insider sales in the trailing 90 days.
A chief executive, president and chief financial officer buying together, within a few dollars of where the stock trades today, is a signal that carries weight. These are the same three people who raised the guidance twice, and they backed it with their own cash.
The AI-Infrastructure Thread
AECOM's backlog sits on transportation, water, energy, grid modernisation and data-centre work. That is the physical layer of the AI build-out, the same theme behind the Leidos thesis, one step further down into the concrete and copper. Data centres need power, power needs a grid, and a grid needs the kind of design and permitting work AECOM sells. A large share of the Infrastructure Investment and Jobs Act money is still to be spent, which is a multi-year demand tailwind.
The company is also investing in its own AI tools and estimates that every 1% of labour it saves adds about 20 basis points to margin. The recent contract flow supports the pipeline claim: a nationwide Department of Homeland Security architecture and engineering award, nine lots on the UK Government Commercial Agency's CPS2 framework, eight lots on Scotland Excel's engineering framework, the top position on Defence Construction Canada's source list worth up to CA$270M, plus New Jersey Turnpike and US Army Corps of Engineers work.
Why It's Down
It is not the numbers but a de-rating, analysts kept cutting targets while the backlog kept growing: RBC to $111 (from $142), Barclays to $90 (from $110) and Truist to $102. In November, Baird moved AECOM and Jacobs to Neutral. They said that the call was about valuation, not fundamentals, and that AECOM's AI strategy is ahead of its peers.
The real fear underneath is AI; engineering consultancies bill by the hour, and if AI compresses the hours needed to deliver a design, the revenue model has a long-term question mark. Add funding worries around government-linked infrastructure names and a risk-off mood, and a stock that had re-rated for several years handed the re-rating back. It is the same wave that hit IT-services names such as Cognizant in June, one tier up the value chain.
The Risks
The business is cyclical and government-funded: shutdowns, appropriations fights, and shifting administration priorities can all delay or cancel contracts. International weakness is not only timing: net service revenue there fell 3% on declines in Asia and the Middle East and the regional conflict. The AI question cuts both ways: a margin help now, a possible drag on billable hours later if adoption runs faster than expected. Guidance raised twice sets a high bar, and a miss from here gets punished much harder. Cash conversion still has to prove itself after the second-quarter wobble, one recovered quarter is not yet a trend. And margin expansion at this company has been called elusive before, the 20%+ 2028 target is a promise, not a delivered number.
There is also a legal overhang, tied to those claims. At least six plaintiff firms have announced investigations into the Q2 disclosures, and after a 12% single-day drop a class action filing would not be a surprise. For a company this size the cost of such a suit is unlikely to be material. The risk that matters is the one those claims already point at: whether they convert to cash. A filed complaint, a restatement, or that balance failing to clear would each move this from a watch item to a real problem.
My View
At $67.70, AECOM trades at about 11x its guided adjusted EPS of roughly $6.00. Jacobs, its closest listed peer, trades near 35x, and Tetra Tech trades near 20x forward. AECOM sits at a third of one direct peer's multiple and about half the other's, with record backlog, record second-quarter margins, guidance raised twice, and the three most senior insiders buying.
The way I read it, the market took a long-term question: what AI does to billable hours over the next five years, and priced it as a near-term collapse, using a cash-flow line that had already reversed as the excuse. This is a real but slow-moving risk mistaken for an urgent one, at a price that pays you to wait while the backlog compounds.
One thing still nags at me. If this is only two projects and AECOM has already won them, why is the total claims balance running at several times its usual level and up 70% in six months? I don't have a clean answer. My read is still that this is collection and dispute timing on a handful of legacy contracts set against a $26B backlog, and the Q3 collection recovery supports that.
I don't currently hold a position in AECOM, but for me this is a buy. I am planning to open a position once the markets open; you can see my current positions.
What I'm going to be watching in to the Q3 report on August 3rd: whether Middle East collections fully normalise the cash-flow line, whether the significant-claims balance comes down, whether design book-to-burn holds above 1, and whether the twice-raised guidance moves again.
Ticker Thoughts is independent analysis and not financial advice. No position held in any of the tickers mentioned at the time of publication. All open and closed positions are detailed on the positions page.