| Rank | Company | Revenue | Sector | Industry | Country | Exchange |
|---|---|---|---|---|---|---|
| 1 | $387M | Basic Materials | Industrial Minerals | United States | Nasdaq | |
| 2 | $377M | Basic Materials | Industrial Minerals | United States | Nasdaq | |
| 3 | $21.7M | Basic Materials | Industrial Minerals | United States | Nasdaq | |
| 4 | $0.11M | Basic Materials | Industrial Minerals | United States | Nasdaq |