Wealth September 8, 2016updated 19 Sep 2016 4:45pm Top 20 Global Locales for Billionaires By Spear's Some cities have a higher propensity for birthing billionaires than others. That’s according to a new report put out by Spear’s in collaboration with consultancy company WealthInSight. 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 As London falls out of top 5 wealthiest cities, can the UK turn the tide on the HNW exodus? Wealth Why relationships matter in private banking Wealth Family dynamics pose greatest threat to succession plans Spear's