| Symbol | Name | Allocation | Country | Exchange |
|---|---|---|---|---|
| HLX | Helix Energy Solutions Group, Inc. | 2.13% | US | NYSE |
| RES | RPC, Inc. | 2.00% | US | NYSE |
| CLB | Core Laboratories N.V. | 1.80% | US | NYSE |
| DRQ | Dril-Quip, Inc. | 1.46% | US | NYSE |
| AROC | Archrock, Inc. | 1.41% | US | NYSE |
| WTTR | Select Energy Services, Inc. | 1.04% | US | NYSE |
| TTI | Tetra Technologies, Inc. | 0.98% | US | NYSE |
| OIS | Oil States International, Inc. | 0.92% | US | NYSE |
| BOOM | Dynamic Materials Corporation | 0.73% | US | NASDAQ |
| VTOL | Bristow Group, Inc. | 0.47% | US | NYSE |