Revenue during the quarter grew 9.27 percent to $4,723.64 million from $4,323.10 million in the previous year period. Gross margin for the quarter expanded 21 basis points over the previous year period to 3.61 percent. Total expenses were 97.98 percent of quarterly revenues, down from 98.40 percent for the same period last year. This has led to an improvement of 42 basis points in operating margin to 2.02 percent.

Operating income for the quarter was $95.24 million, compared with $69.07 million in the previous year period.

However, the adjusted operating income for the quarter stood at $283.40 million compared to $219.20 million in the prior year period. At the same time, adjusted operating margin improved 93 basis points in the quarter to 6 percent from 5.07 percent in the last year period.

Commenting on the results, Michael S. Burke, AECOM's chairman and chief executive officer, said, "We achieved our EPS and free cash flow targets. However, our fiscal 2016 financial performance was negatively impacted by market challenges, including uneven client spending in our Americas Design business, continued market pressures from low oil and gas prices, and lower than anticipated earnings contributions from the sizable power and industrial construction wins in the second half of the year due to the timing."

For financial year 2017, the company forecasts diluted earnings per share to be in the range of $2.06 to $2.46. The company forecasts diluted earnings per share to be in the range of $2.70 to $3.10 on adjusted basis.