| Rank | Company | Operating income | Sector | Industry | Country | Exchange |
|---|---|---|---|---|---|---|
| 1 | $426M | Industrials | Business Services | United States | NYSE | |
| 2 | $270M | Industrials | Business Services | United States | Nasdaq | |
| 3 | $29.8M | Industrials | Business Services | United States | Nasdaq | |
| 4 | $6.77M | Industrials | Business Services | United States | NYSE |