Lukas Walton is the grandson of Sam Walton, founder of Walmart. Aside from his stakes in Walmart, Lukas also has shares in Arvest Bank, and First Solar, as per hisForbesprofile. Inside the $4 billion family office of Walmart Heir Lukas Walton. Despite the fact that he does not work for Walmart, his family's primary business, he still earns a sizable sum of money from his share. Billionaires cant seem to resist opening their wallets for the guy once dubbed the poorest man in Congress.. Top editors give you the stories you want delivered right to your inbox each weekday. Login,