The number of billionaires with over $100 billion wealth has reached 15 for the first time, as per the Bloomberg Billionaires Index. The list includes Bernard Arnault, Jeff Bezos, Elon Musk, Mark Zuckerberg, Larry Page, Bill Gates, Sergey Brin, Steve Ballmer, Warren Buffett, Larry Ellison, Michael Dell, Mukesh Ambani, Carlos Slim, Gautam Adani and Francoise Bettencourt Meyers.