A single delayed Construction Management project turned what would have been a steady, margin-positive quarter into a GAAP loss for AECOM in fiscal Q3 2026 (quarter ended July 3, 2026). The project, awarded in 2019 under risk-acceptance terms the company says it would no longer accept, drove a $336.8 million pre-tax loss, pushed GAAP operating income to a $76 million loss from a $294 million profit a year earlier, and forced management to cut full-year adjusted EPS guidance to between $3.95 and $4.15 from the prior range of $5.90 to $6.10 (excluding the project). Strip the project out, however, and the underlying franchise is healthier than at any point in recent memory: net service revenue in design grew 4% on a constant-currency basis (5% adjusted for one fewer working day), the Americas design business grew 6% on the same basis, adjusted EBITDA margin on a project-excluded basis came in at 17.0% (only 60 basis points below the prior year), and total backlog reached an all-time high of $27.8 billion, up 13% year-over-year on a 1.6 book-to-burn ratio that includes two of the largest recompetes in the company's history. The equity question for the next six months is whether the project loss is a one-time legacy event that clears the deck for fiscal 2027, or the leading edge of a broader risk-management problem inside AECOM's shrinking Construction Management footprint.