William Francis Duhamel is listed as Limited Partner at Route One Investment Company, L.P. on SEC Form ADV.
Form ADV reports a beneficial ownership band of 50-75%.
| Title | Limited Partner |
| Ownership | 50-75% |
| Control person | Yes |
| Since | 2010 |
| Title | Manager, Member |
| Ownership | — |
| Control person | Yes |
| Since | 2010 |