Combined wealth of the world's millionaires tops $70 trillion

The number of high net worth individuals (HNWI) -- which Capgemini defines as those having investable assets of $1 million or more (excluding primary residence, collectibles, consumables and consumer durables) --  grew almost 10 percent, or 1.6 million, to 18.1 million in 2017.  

"High net worth individuals around the world enjoyed investment returns above 20 percent for the second year in a row," Anirban Bose, head of Capgemini's financial services global strategic business unit, said in a statement. The report's analysis confirms that "global HNWI wealth would exceed $100 trillion by 2025," Bose wrote