Charles Koch is an American billionaire businessman and philanthropist. He is the co-owner, chairman, and CEO of Koch Industries, a conglomerate that is the second-largest privately held company in the United States.
Rob took over as chairman of Walmart in 1992, which he held for 23 years. He has a net worth of $65 billion as of March 2022. Rob’s wealth comes from his stake in Walmart, which is currently worth approximately $430 billion.