Mark Zuckerberg Is Now the Sixth-Richest Person in the World

Mark Zuckerberg’s Facebook empire just keeps growing.

The 31-year-old CEO of the social network is now worth about $47 billion, making him the sixth-richest person on Earth, according to Bloomberg.

Facebook on Wednesday released a stellar earnings report for the fourth quarter of 2015, which sent stocks soaring more than 13% in early-morning trading Thursday. Zuckerberg’s wealth is primarily in Facebook stock, so the rally boosted his net worth by $1.2 billion for the year.

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Charles and David Koch, who Zuckerberg surpassed, have seen their net worth decline due to falling oil prices.

The richest person in the world remains Bill Gates, who has a net worth of $78 billion, according to Bloomberg. He’s followed by Amancio Ortega ($70 billion), Warren Buffett ($59 billion), Jeff Bezos ($52 billion) and Carlos Slim ($48 billion).