Top 10 Richest Forbes magazine has released it's top 400 list - the annual ranking of the 400 richest Americans. The top 10 goes like this: Bill Gates ($46BB), Warren Buffett ($36BB), Paul Allen ($22BB), 5 of the Waltons siblings (total of $100BB amongst them), Larry Ellison ($18BB) and Michael Dell ($13BB). Together, the top 10 richest Americans account for $955BB in wealth!