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 Hamblin Family Law is exploring a groundbreaking pricing model Spies and secret ops: How espionage has inspired London’s most exciting hotel High-flyers: TAG Aviation explains that it’s not about the destination, it’s about the journey Related Wealth Supreme Court rules Russian bankrupt’s trustee can’t take possession of Belgravia property Wealth Asset managers confident AI will fuel revenue growth Wealth Lack of trust in Gen Z risks generational wealth erosion Spear's