MEET THE WALTONS: How America's wealthiest family spends its Walmart fortune
The Walmart heirs have a combined wealth of $130 billion, which is more than both Bill Gates and Warren Buffett. In fact, they are worth $48 billion more than the second richest family in the US - the Kochs.
Despite their fortune, they seem to live a pretty modest life. At least in public.
Here's what we do know about how the wealthy family spends its fortune.