The Irving-headquartered player came ahead of competitors in the oil and gas arena such as Jacobs Engineering and Peter Kiewit Sons to take the top slot in the market segment for the sixth year running.
Emcor came in second in the engineering and construction sector, with Jacobs in third, Kiewit in fourth and Aecom in fifth.
Technology giant Apple came first in what is essentially a list of US companies, with Amazon in second, Starbucks in third, investor behemoth Berkshire Hathaway in fourth and Disney in fifth.
