Mark Zuckerberg became the world’s fourth-richest person on Tuesday, as Facebook Inc. shares fended off plunging stock markets.

According to Bloomberg, the 31-year-old founder of the largest social network had a $50 billion fortune by the close of regular trading in New York. That vaulted him above America Movil SAB’s Carlos Slim and Amazon.com Inc.’s Jeff Bezos on the Bloomberg Billionaires Index, a daily ranking of the world’s 400 richest people.

Even with a 0.4 percent decline for the day, Facebook is up 9.5 percent in 2016, defying gloom across global equity markets. The Menlo Park, a California-based company reported results last week that beat analyst estimates, propelling Facebook to the fourth-most valuable company on the planet after Google parent Alphabet Inc., Apple Inc. and Microsoft Corp.

[caption id="attachment_34887" align="alignnone" width="1200"] Statistical Information by Bloomberg[/caption]

An 18 percent decline this year for Amazon has cut $10.6 billion from Bezos’s fortune, leaving him with $49.1 billion. Bezos was the top-performing billionaire on the index in 2015, more than doubling his net worth. Slim has lost $3.3 billion this year as America Movil takes a hit from the economic crisis in Brazil, the source of 17 percent of its third-quarter sales.

Zuckerberg is the only billionaire among the world’s five richest people whose fortune has increased this year. Half of the 10 wealthiest billionaires on Earth have made their fortunes in technology.

Photo: bloomberg.com