Filing Flows › Comparisons › ACM vs WLDN
AECOM vs Willdan Group: ACM and WLDN compared
AECOM is the larger company: $4.2B of revenue in its latest quarter (Q4 FY25) against $215M for Willdan Group (Q3 2026). Willdan Group is growing faster (+18% against +2% a year earlier). Willdan Group is more profitable, with an operating margin of 7.6% against 5.7%.
Where the money goes: ACM and WLDN
AECOM (ACM) · Q4 FY25
AECOM, Q4 FY25: revenue $4.2B (+2% year over year), operating margin 5.7%, net earnings $120M, operating cash flow $196M. The chart follows the revenue to costs, profit and cash.
Willdan Group (WLDN) · Q3 2026
Willdan Group, Q3 2026: revenue $215M (+18% year over year), operating margin 7.6%, net earnings $11.9M, operating cash flow $13.4M. The chart follows the revenue to costs, profit and cash.
| AECOM (ACM) | Willdan Group (WLDN) | |
|---|---|---|
| Latest quarter | Q4 FY25 | Q3 2026 |
| Revenue | $4.2B | $215M |
| Revenue growth, Y/Y | +2% | +18% |
| Gross margin | 7.9% | 38.4% |
| Operating margin | 5.7% | 7.6% |
| Net earnings | $120M | $11.9M |
| Net margin | 2.9% | 5.5% |
| Operating cash flow | $196M | $13.4M |
| Free cash flow | $134M | $11.9M |
| Market value | $8.6B | $1.2B |
| P/E | 20.3× | 17.7× |
| Analysts’ mean target | $83.92 | $137.50 |
Where the revenue comes from
Willdan Group
- Energy: $185M (86%)
- Engineering and Consulting: $29.7M (14%)
Questions
Which is bigger, AECOM or Willdan Group?
AECOM is the larger company: $4.2B of revenue in its latest quarter (Q4 FY25) against $215M for Willdan Group (Q3 2026).
Is AECOM or Willdan Group growing faster?
Willdan Group is growing faster (+18% against +2% a year earlier).
Which is more profitable, AECOM or Willdan Group?
Willdan Group is more profitable, with an operating margin of 7.6% against 5.7%.
More: AECOM earnings · how AECOM makes money · Willdan Group earnings · how Willdan Group makes money
From the companies' latest 10-Q, 10-K or earnings release (10-K filed Nov 19, 2025; 10-Q filed Nov 6, 2026). Fiscal quarters can end on different dates. Not investment advice.