Amazon founder and CEO Jeff Bezos added the most in 2017 with a $34.2 billion USD gain — with a reported net worth of $99.6 billion USD — knocking Microsoft co-founder Bill Gates out of the top spot back in October. Gates added $8.9 billion USD to his name this year adding to his total net worth of $91.3 billion USD. Warren Buffet took the No. 3 spot, adding $11.8 billion USD to his fortune for a total of $85 billion USD.
By the end of trading Tuesday, December 26, the 500 billionaires controlled $5.3 trillion USD, up from $4.4 trillion USD on December 27, 2016.