10 / 15
Christy Walton & family

6.       Christy Walton & family - $35.4 billion – Wal-Mart heirs, the Walton family take the next four spots on the list. 

Forbes top 15 American billionaires

September 17, 2013

Forbes released its annual list of the top 400 richest Americans. While most of the top names and rankings didn't change from a year ago, the majority of the elite club's members saw their fortunes grow over the past year, helped by strong stock and real estate markets. Here are the top 10 American billionaires. Note: Amounts are in US dollars.