| Rank | Company | Market cap | Sector | Industry | Country | Exchange |
|---|---|---|---|---|---|---|
| 1 | $4.74B | Energy | Coal | United States | NYSE | |
| 2 | $4.40B | Energy | Coal | United States | NYSE | |
| 3 | $3.05B | Energy | Coal | United States | NYSE | |
| 4 | $2.21B | Energy | Coal | United States | NYSE | |
| 5 | $1.47B | Energy | Coal | United States | NYSE | |
| 6 | $276M | Energy | Coal | United States | NYSE |