| Rank | Company | Market cap | Sector | Industry | Country | Exchange |
|---|---|---|---|---|---|---|
| 1 | $53.7B | Energy | Oil & Gas | United States | Nasdaq | |
| 2 | $20.6B | Energy | Oil & Gas | United States | Nasdaq | |
| 3 | $15.9B | Energy | Oil & Gas | United States | Nasdaq | |
| 4 | $15.3B | Energy | Oil & Gas | United States | Nasdaq | |
| 5 | $7.79B | Energy | Oil & Gas | United States | Nasdaq | |
| 6 | $5.08B | Energy | Oil & Gas Refining | United States | Nasdaq | |
| 7 | $4.38B | Energy | Oil & Gas | United States | Nasdaq | |
| 8 | $3.17B | Energy | Coal | United States | Nasdaq | |
| 9 | $2.34B | Energy | Oil & Gas | United States | Nasdaq | |
| 10 | $1.45B | Energy | Oil & Gas | United States | Nasdaq | |
| 11 | $1.10B | Energy | Oil & Gas | United States | Nasdaq | |
| 12 | $856M | Energy | Oil & Gas | United States | Nasdaq | |
| 13 | $515M | Energy | Oil & Gas | United States | Nasdaq | |
| 14 | $493M | Energy | Coal | United States | Nasdaq | |
| 15 | $335M | Energy | Oil & Gas | United States | Nasdaq | |
| 16 | $229M | Energy | Oil & Gas | United States | Nasdaq | |
| 17 | $184M | Energy | Oil & Gas | United States | Nasdaq | |
| 18 | $177M | Energy | Coal | United States | Nasdaq | |
| 19 | $171M | Energy | Oil & Gas | United States | Nasdaq | |
| 20 | $133M | Energy | Oil & Gas | United States | Nasdaq | |
| 21 | $114M | Energy | Oil & Gas | United States | Nasdaq | |
| 22 | $80.4M | Energy | Oil & Gas | United States | Nasdaq | |
| 23 | $76.1M | Energy | Oil & Gas | United States | Nasdaq | |
| 24 | $45.9M | Energy | Oil & Gas | United States | Nasdaq | |
| 25 | $26.8M | Energy | Oil & Gas | United States | Nasdaq | |
| 26 | $0.66M | Energy | Oil & Gas | United States | Nasdaq | |
| 27 | $0.06M | Energy | Oil & Gas | United States | Nasdaq |