Caterpillar? In agriculture? Do you mean Challenger (AGCO) or CLAAS, both of whom have used Caterpillar branding at points in the past? Although neither of them have recently.
Curiously, you're the second person to have mentioned Caterpillar being involved in agriculture in this discussion. Which surprises me. They are not a player at all, outside of some overlap use of their industrial products (skidsteers, payloaders, etc.)