| Rank | Company | Total assets | Sector | Industry | Country | Exchange |
|---|---|---|---|---|---|---|
| 1 | $70.2B | Energy | Oil & Gas | United States | Nasdaq | |
| 2 | $28.0B | Energy | Oil & Gas | United States | Nasdaq | |
| 3 | $18.0B | Energy | Oil & Gas | United States | Nasdaq | |
| 4 | $13.7B | Energy | Oil & Gas | United States | Nasdaq | |
| 5 | $12.1B | Energy | Oil & Gas | United States | Nasdaq | |
| 6 | $5.37B | Energy | Oil & Gas | United States | Nasdaq | |
| 7 | $3.17B | Energy | Oil & Gas | United States | Nasdaq | |
| 8 | $2.94B | Energy | Coal | United States | Nasdaq | |
| 9 | $2.80B | Energy | Oil & Gas Refining | United States | Nasdaq | |
| 10 | $2.51B | Energy | Oil & Gas | United States | Nasdaq | |
| 11 | $2.10B | Energy | Oil & Gas | United States | Nasdaq | |
| 12 | $1.02B | Energy | Coal | United States | Nasdaq | |
| 13 | $1.01B | Energy | Oil & Gas | United States | Nasdaq | |
| 14 | $372M | Energy | Oil & Gas | United States | Nasdaq | |
| 15 | $346M | Energy | Oil & Gas | United States | Nasdaq | |
| 16 | $315M | Energy | Oil & Gas | United States | Nasdaq | |
| 17 | $314M | Energy | Oil & Gas | United States | Nasdaq | |
| 18 | $294M | Energy | Oil & Gas | United States | Nasdaq | |
| 19 | $236M | Energy | Oil & Gas | United States | Nasdaq | |
| 20 | $175M | Energy | Oil & Gas | United States | Nasdaq | |
| 21 | $169M | Energy | Coal | United States | Nasdaq | |
| 22 | $107M | Energy | Oil & Gas | United States | Nasdaq | |
| 23 | $67.6M | Energy | Oil & Gas | United States | Nasdaq | |
| 24 | $55.9M | Energy | Oil & Gas | United States | Nasdaq | |
| 25 | $55.3M | Energy | Oil & Gas | United States | Nasdaq | |
| 26 | $5.89M | Energy | Oil & Gas | United States | Nasdaq |