(Bloomberg) -- Facebook Inc. founder Mark Zuckerberg added almost $3 billion to his net worth as shares rose with the social-media giant solidifying its No. 2 position in the market for mobile advertising, behind Alphabet Inc.'s Google. Zuckerberg's fortune reached almost $59 billion in aftermarket trading. He's the fifth-richest person on the Bloomberg Billionaires Index, which will reflect today's jump when it updates on Thursday.
--With assistance from Jack Witzig To contact the reporter on this story: Justin Villamil in New York at jvillamil18@bloomberg.net. To contact the editors responsible for this story: Robert LaFranco at rlafranco@bloomberg.net, Alan Goldstein
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