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

Money Sharma—AFP/Getty Images Facebook chief executive and founder Mark Zuckerberg speaks during a 'town-hall' meeting at the Indian Institute of Technology (IIT) in New Delhi on October 28, 2015.

He just passed the Koch brothers

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.

Read next: These Are the 10 Richest Women of All Time

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).

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