Who is Diane Hendricks?
Diane Hendricks is the American businesswoman who owns and chairs ABC Supply, the largest wholesale distributor of roofing materials in the United States. Forbes’ 2026 World’s Billionaires list valued her at $22.3 billion, 113th in the world and the highest ranked Wisconsin resident on the list 2. Forbes ranked her the richest self-made woman in America for the eighth straight year in 2025 2.
How did Diane Hendricks make her money?
She and her husband Ken Hendricks opened the first ABC Supply branch in Beloit, Wisconsin in 1982, after years of buying and renovating old houses around the town. She became chairman after Ken died in December 2007 and in 2013 became sole owner by buying out the company’s investors, including Advent International and Apollo Global Management, for about $1.4 billion. ABC acquired Bradco in 2010 and L&W Supply in 2016 134.
Early life and education
Diane Marie Smith was born on 2 March 1947 in Mondovi, Wisconsin, the daughter of dairy farmers, and grew up in Osseo. She graduated from Osseo-Fairchild High School in 1965, had her first child at 17 and assembled pens at the Parker Pen Company in Janesville. At 21 she earned a real estate broker’s licence 13.
ABC Supply and Hendricks Holding
European Business Magazine reported more than 970 ABC Supply locations, about 20,000 employees and revenue of $20.2 billion in 2025. Forbes put 2024 revenue at $20.7 billion. She also owns Hendricks Holding Company, an investment group the couple founded in 2001 34. Read Diane Hendricks’s companies.
Family
She married Ken Hendricks in 1975. He died on 21 December 2007, aged 66, after a fall at their home in Afton, Wisconsin. Wikipedia lists seven children and names her daughter Konya Hendricks Schuh 13. See Diane Hendricks’s family.
Diane Hendricks net worth
Forbes valued her at $22.3 billion in 2026, about ₹2.1 lakh crore at ₹94 to the dollar, up from $21.9 billion in April 2025 and $6.9 billion in 2020 25. See Diane Hendricks net worth and our ranking of the wealthiest women in the world.