| CEQP | Crestwood Equity Partners LP |
| ETRN | Equitrans Midstream |
| GPP | Green Plains Partners LP |
| HEP | Holly Energy Partners |
| HESM | Hess Midstream LP |
| MPLX | MPLX LP |
| NS | NuStar Energy |
| PAA | Plains All American Pipeline |
| PAGP | Plains GP |
| SMLP | Summit Midstream Partners, LP |
| TRGP | Targa Resources |
| WES | Western Midstream Partners, LP |