| Symbol | Name | Allocation | Country | Exchange |
|---|---|---|---|---|
| CLB | Core Laboratories N.V. | 0.87% | US | NYSE |
| PUMP | ProPetro Holding Corp. | 0.85% | US | NYSE |
| DRQ | Dril-Quip, Inc. | 0.83% | US | NYSE |
| SLCA | U.S. Silica Holdings, Inc. | 0.76% | US | NYSE |
| RES | RPC, Inc. | 0.68% | US | NYSE |
| VTOL | Bristow Group, Inc. | 0.56% | US | NYSE |
| BOOM | Dynamic Materials Corporation | 0.31% | US | NASDAQ |