Zuckerberg's rise in the ranking has been driven by investors who continued to embrace Facebook despite a data-privacy crisis that caused the company's shares to slide to an eight-month low of $152.22 on March 27.
Zuckerberg's net worth increased to $81.6 billion on Friday, Bloomberg reported, after Facebook shares went up 2.4%.
Facebook founder Mark Zuckerberg moves ahead of Warren Buffett for the first time in Bloomberg's list of the world's 500 richest people (see table below). Zuckerberg, 34, is now worth $81.6 billion, about $373 million more than Buffett, the 87-year-old chairman and chief executive officer of Berkshire Hathaway Inc.
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Facebook appears to have made it through its worst storm to date, though. The report noted that this is the first time when the three wealthiest people on the list built their vast wealth in the field of technology.
Facebook's stock surged 12% to hit a record high of $203.58 on Friday, before closing at $203.23, valuing the social media giant at $571bn.
Those shares are now worth over $50 billion. Technology assets make up about 20 percent of the more than $5 trillion in wealth tracked by the index, which is more than any other business. Zuckerberg and his wife, Priscilla Chan, have pledged to give away 99 percent of their Facebook stock over their lifetimes.