| Company | Share, % |
|---|---|
 NuStar Energy L.P.
|
1.04 |
 Crestwood Equity Partners LP
|
0.88 |
 Delek Logistics Partners, LP
|
0.52 |
| Shell Midstream Partners, L.P. | 0.29 |
 Phillips 66 Partners LP
|
0.24 |
 Enable Midstream Partners, LP
|
0.23 |
