| 1 | ET | Energy Transfer LP | Transportation and Warehousing | 14.70% |
| 2 | TRGP | Targa Resources Corp | Transportation and Warehousing | 14.45% |
| 3 | OKE | ONEOK Inc | Transportation and Warehousing | 13.02% |
| 4 | WES | Western Midstream Partners LP | Transportation and Warehousing | 10.27% |
| 5 | MPLX | MPLX LP | Transportation and Warehousing | 10.02% |
| 6 | WMB | Williams Cos Inc/The | Transportation and Warehousing | 8.62% |
| 7 | EPD | Enterprise Products Partners L | Administrative and Support and Waste Management and Remediation Services | 8.54% |
| 8 | ENB | Enbridge Inc | Utilities | 7.23% |
| 9 | PAA | Plains All American Pipeline L | Transportation and Warehousing | 6.74% |
| 10 | KMI | Kinder Morgan Inc | Transportation and Warehousing | 6.65% |
