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The World's Richest People Lost $70 Billion Yesterday

A worldwide rout
Warren Buffett, Berkshire Hathaway Inc. chairman and chief executive officer, right, talks with Bill Gates, billionaire and co-chair of the Bill and Melinda Gates Foundation, as they tour the exhibition floor during the Berkshire Hathaway Inc. annual shareholders meeting in Omaha, Nebraska, U.S., on Saturday, May 2, 2015.

Warren Buffett, Berkshire Hathaway Inc. chairman and chief executive officer, right, talks with Bill Gates, billionaire and co-chair of the Bill and Melinda Gates Foundation, as they tour the exhibition floor during the Berkshire Hathaway Inc. annual shareholders meeting in Omaha, Nebraska, U.S., on Saturday, May 2, 2015.

Photographer: Daniel Acker/Bloomberg

The world's 400 richest people lost a combined $70 billion on Monday as equity markets around the globe were hammered on fears about Greece and declines in China fueled by leveraged investors exiting the market.

The loss for the billionaires amounted to an average decline of $175 million, according to the Bloomberg Billionaires Index. Nigerian billionaire Aliko Dangote, Africa's richest person and the world's 59th-richest, was one of only 12 billionaires among the 400 to increase their fortunes on the day, rising $180 million to $15.3 billion. Dangote Cement rose 2.35 percent.