Mark Shoen's fortune is rooted in the U-Haul company his parents founded, while his own record includes decades of operating involvement and majority ownership of a large private self-storage business. [1][2][3]
His starting point was the family-controlled U-Haul business
Forbes says Shoen's parents, L.S. and Anna Mary Shoen, cofounded U-Haul in 1945, making an established family company the central starting asset behind his billionaire wealth. [1]
A Nevada Supreme Court account of the Shoen family dispute says founder L.S. Shoen made gifts of Amerco holdings to his children as the business grew, with his four oldest sons each holding about 10% at the time described by the court. [3]
U-Haul Holding Company's 2025 annual report says Mark and his brother Edward help manage the general partner of Willow Grove Holdings, whose controlled interests together with the brothers represented about 50.1% of the company's voting common stock. [2]
Operating roles and self-storage broadened the wealth base
The court record also describes Mark as a long-serving Amerco director, while later company disclosures document operating roles inside U-Haul. That record supports active stewardship beyond simply receiving family shares. [3]
Forbes says Shoen owns roughly one-fifth of U-Haul's publicly traded parent and is also the majority owner of one of the largest private self-storage operations in the United States, adding a separate operating asset alongside the inherited family-company stake. [1]
Sources for background
Sources reviewed Oct 2, 2026.
- Mark Shoen · Forbes · Sep 15, 2026
- U-Haul Holding Company Form 10-K for the fiscal year ended March 31, 2025 · U.S. Securities and Exchange Commission · May 29, 2025
- Shoen v. Amerco, Inc. · Supreme Court of Nevada · May 25, 1995
Comparable Automotive billionaires
Similar Automotive billionaires by estimated net worth.
