| Rank | Company | Operating income | Sector | Industry | Country | Exchange |
|---|---|---|---|---|---|---|
| 1 | $1.12B | Industrials | Professional Services | United States | NYSE | |
| 2 | $1.05B | Industrials | Professional Services | United States | NYSE | |
| 3 | $779M | Industrials | Professional Services | United States | NYSE | |
| 4 | $631M | Industrials | Professional Services | United States | NYSE | |
| 5 | $562M | Industrials | Professional Services | United States | NYSE | |
| 6 | $380M | Industrials | Professional Services | United States | NYSE | |
| 7 | $205M | Industrials | Professional Services | United States | NYSE | |
| 8 | $50.8M | Industrials | Professional Services | United States | NYSE | |
| 9 | $7.75M | Industrials | Professional Services | United States | NYSE | |
| 10 | $6.43M | Industrials | Professional Services | United States | NYSE | |
| 11 | $1.55M | Industrials | Professional Services | United States | NYSE |