Wealth September 8, 2016updated 26 Sep 2016 10:56am Billionaire makers: The cities growing the world’s wealthiest By Spear's New York has topped the list of cities where the most billionaires were born, according to analysis by WealthInsight and Spear’s magazine. Content from our partners How Flygreen is ascending into the future of private aviation Stoneweg, Icona, and CBH Strengthen Partnership with Cromwell Acquisition, Adding €4 Billion AUM to Stoneweg Why investors should consider investing in nature Related Wealth What is carried interest and how will Labour’s plans affect private equity executives? Wealth The rise and fall of the Barclay family empire Wealth What does the assassination attempt on Donald Trump reveal about HNW security? Spear's