The Wealth Report" (a global perspective on prime property and wealth) is made by the London based estate agent Knight Frank LLP together with the Citi Private Bank. The report includes a "Global City Survey", evaluating which cities are considered the most important to the world’s HNWIs (high-net-worth individuals, having over $25million of investable assets). For the Global City Survey, Citi Private Bank’s wealth advisors, and Knight Frank’s luxury property specialists were asked to name the cities that they felt were the most important to HNWIs, in regard to: "economic activity", "political power", "knowledge and influence" and "quality of life".