Welcome to the fourth edition of the UBS/PwC Billionaires Report. Now in its third year, the report draws upon UBS and PWC’s extensive networks, and aims to better understand the billionaire population globally. This year we have analyzed data covering 1,550 billionaires looking back over two decades. Our database includes 14 of the largest billionaire markets, which account for around 80% of global billionaire wealth. Further, we’ve conducted over 25 interviews with billionaire advisors and further face-to-face interviews with more than 30 billionaires and approximately 30 of their heirs.