Here's a list of the top ten richest people in the world, nine of which are American billionaires. See Elon Musk's net worth.

With many saying they own their own businesses in healthcare, tech, marketing or property, many of them said the same thing.

Diapers.com cofounder, Timberwolves co-owner and former Walmart e-commerce chief Marc Lore is betting heavily on his takeout ...