We explore the latest edition of the longest-running and most comprehensive study of billionaire wealth. The 10th iteration tracks the wealth of more than 2,500 billionaires across the Americas, EMEA and APAC. As part of its research, UBS also conducted an online survey of the views of a sample of billionaire clients across the world. So what are some of the key discoveries? We discuss the report with Maximilian Kunkel, chief investment officer for global family and institutional wealth at UBS Global Wealth Management.