| Amount | Holding |
|---|---|
| 13.05% | Schlumberger Ltd |
| 10.58% | Baker Hughes Co Class A |
| 8.53% | Halliburton Co |
| 6.10% | National Oilwell Varco Inc |
| 4.82% | Cactus Inc Class A |
| 4.59% | TechnipFMC PLC |
| 4.12% | Helmerich & Payne Inc |
| 3.93% | Dril-Quip Inc |
| 3.41% | Archrock Inc |
| 3.36% | Tenaris SA ADR |