In 1962, Sam Walton opened the first Walmart store. This was how he made himself one of the richest people in the world. Over time, the Walmart chain became the biggest chain store in the US.
After Sam Walton’s death, the company has been controlled by his wife and 4 children. Aside from the supermarkets, the family controls Arvest Bank and they also own a collection of art pieces and run a family charity fund.