The three richest persons in the world, Jeff Bezos, Bill Gates and Mark Zuckerberg, are technology billionaires leading their companies Amazon, Microsoft and Facebook respectively. Facebook Co-Founder and CEO Mark Zuckerberg on Saturday overtook Berkshire Hathaway's Warren Buffett to become the world's third-richest person. Zuckerberg has a net worth of $81.6 billion as per Bloomberg.