| Rank | Company | Operating income | Sector | Industry | Country | Exchange |
|---|---|---|---|---|---|---|
| 1 | $3.66B | Energy | Oil & Gas | United States | Nasdaq | |
| 2 | $1.20B | Energy | Oil & Gas | United States | Nasdaq | |
| 3 | $1.08B | Energy | Oil & Gas | United States | Nasdaq | |
| 4 | $320M | Energy | Coal | United States | Nasdaq | |
| 5 | $251M | Energy | Oil & Gas | United States | Nasdaq | |
| 6 | $132M | Energy | Oil & Gas | United States | Nasdaq | |
| 7 | $47.1M | Energy | Oil & Gas Refining | United States | Nasdaq | |
| 8 | $11.6M | Energy | Oil & Gas | United States | Nasdaq | |
| 9 | $4.78M | Energy | Oil & Gas | United States | Nasdaq | |
| 10 | $0.67M | Energy | Oil & Gas | United States | Nasdaq |