From Bezos to Zuckerberg: World's billionaire winners and losers of 2018

Singaporean billionaires fared the best in dollar terms, gaining $2.5 billion

The markets may be tanking, but that hasn't stopped plenty of mega-fortunes from being unearthed in 2018.  

The popularity of Fortnite, the phenomenon that forced some into video-game rehab, gave gamemaker Tim Sweeney a $7.2 billion fortune this year. Autry Stephens has $11.4 billion after his closely held Endeavour Energy Resources LP attracted bids that valued the oil company at as much as $15 billion.   

"It was a good year for wealth creation," said Michael Zeuner, managing partner of WE Family Offices. "It was a tough year in financial markets, but for people who are creating wealth through