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 Guernsey’s private trustee structures can protect assets Luštica Bay: The Adriatic’s most coveted address AI, growth and public policy: What is the future for Britain? Related Wealth Global trade war most significant risk to family offices in 2025 Wealth Wealth managers must embrace AI as industry warned over complacency Wealth As London falls out of top 5 wealthiest cities, can the UK turn the tide on the HNW exodus? Spear's