| Amount | Holding |
|---|---|
| 5.30% | Phillips 66 |
| 5.06% | Valero Energy Corp |
| 4.86% | Concho Resources Inc |
| 4.64% | Pioneer Natural Resources Co |
| 3.98% | Dril-Quip Inc |
| 3.92% | Marathon Petroleum Corp |
| 3.81% | WEX Inc |
| 3.46% | Hess Corp |
| 3.32% | Aspen Technology Inc |
| 3.26% | Baker Hughes Co Class A |