Diane Hendricks’ rise to billionaire status stands out in modern American business for its simplicity rather than spectacle. Unlike tech founders or consumer brand moguls, her wealth was built in the unglamorous but essential world of building materials and contractor supply chains. Born and raised in Wisconsin on a dairy farm, she co-founded ABC Supply in 1982 with her late husband, Ken Hendricks. The company focused on roofing, siding, and exterior building products, serving contractors who depend on reliable delivery, credit, and trust-based relationships. Today net worth is estimated at $21.7 billion in 2026, reflecting decades of compounding growth, disciplined expansion, and a steady focus on operational efficiency across national distribution networks.
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