The market’s positive response to Facebook's FB +0.13% strong first quarter earnings report has made the social media giant’s CEO $4.2 billion richer in after-hours trading. Mark Zuckerberg is now the sixth richest person in the world with fortune that Forbes estimates is $51.7 billion, surpassing Oracle ORCL +0.49% Chairman Larry Ellison by nearly $2 billion as of 6:30 p.m. Eastern time.

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http://www.forbes.com/sites/katevinton/2016/04/27/mark-zuckerberg-gains-4-billion-to-become-worlds-sixth-richest-person-ahead-of-larry-ellison/#79cb69b675be