Analysen von Stephen Volkmann
| 28.09.15 | Caterpillar Hold | Jefferies & Company Inc. | |
| 28.01.15 | Caterpillar Hold | Jefferies & Company Inc. | |
| 19.07.12 | Caterpillar hold | Jefferies & Company Inc. | |
| 28.11.11 | Deere hold | Jefferies & Company Inc. | |
| 20.05.11 | Deere hold | Jefferies & Company Inc. | |
| 17.11.10 | Bucyrus International hold | Jefferies & Company Inc. |