The definitive list of 2015’s billionaires topping the ranks.
Subscribe to FORBES: https://www.youtube.com/user/Forbes?sub_confirmation=1
Forbes on Facebook: http://fb.com/forbes
Forbes Video on Twitter: http://www.twitter.com/forbesvideo
Forbes Video on Instagram: http://instagram.com/forbesvideo
More From Forbes: http://forbes.com
Forbes covers the intersection of entrepreneurship, wealth, technology, business and lifestyle with a focus on people and success.