Credit Suisse Research Institute “Global Wealth Report” (2018)

Social disparity has reached an extreme level and current statistics indicate that an ultra-rich segment (>1% of the total population) owns ≈50% of the worlds entire wealth, i.e., ≈$140 trillion are owned by a infinitesimal small minority of humanity; but see the Credit Suisse Research Institute “Global Wealth Report” from 2018.
URL: www.credit-suisse.com/corporate/en/research/research-institute/global-wealth-report.html

Credit Suisse. (2018). Global Wealth Databook 2018. Credit Suisse doi.org/10.1038/nbt0910-907