The Cargill-MacMillan Family — $65 Billion (Cargill)

Cargill is the largest privately held company in the world by revenue ($177 billion in 2023) — yet most people have never heard of it. The family owns 88% of a company that controls 25% of U.S. grain exports, processes meat for McDonald's and Walmart, and trades commodities across 70 countries. There are over 100 family members with ownership stakes. Fourteen of them are billionaires. They feed roughly one-third of the planet through their supply chain and nobody knows their names. The Cargill-MacMillans are proof that the real power in capitalism is invisible.