| Amount | Holding |
|---|---|
| 21.08% | Union Pacific Corp |
| 11.02% | United Parcel Service Inc Class B |
| 9.52% | CSX Corp |
| 7.74% | Norfolk Southern Corp |
| 4.03% | Expeditors International of Washington Inc |
| 3.70% | FedEx Corp |
| 3.53% | Kansas City Southern |
| 3.31% | Southwest Airlines Co |
| 3.00% | SkyWest Inc |
| 2.97% | C.H. Robinson Worldwide Inc |