reflecting three dimensions of economic power, was introduced in 2012. In 2015, the second Global Economic Power Index, a meta list compiled by Richard Florida, was published by The Atlantic (distinct from a namesake list published by the Martin Prosperity Institute), with city composite rank based on five other lists. The top 10 global cities in 2015 were as follows: New York City London Tokyo Hong Kong Paris Singapore Los Angeles Seoul Vienna Stockholm & Toronto Global Financial Centres Index Strength as a financial center has become one of the pre-eminent indicators of a global city's ranking. As of March 2022, the cities representing the top ten financial centers according to the Global Financial Centres Index by analytics firm Z/Yen were: New York City London Hong Kong Shanghai Los Angeles Singapore San Francisco Beijing Tokyo Shenzhen Global Power City Index The Tokyo-based Institute for Urban Strategies at The Mori Memorial Foundation, issued a comprehensive study of global cities in 2008. They are ranked in six categories: economy, research and development, cultural interaction, livability, environment, and accessibility, with 70 individual indicators among them. The top ten world cities are also ranked by subjective categories, including manager, researcher, artist, visitor and resident. The top 10 cities in the 2021 Global Power City Index were: London New York City Tokyo Paris Singapore Amsterdam Berlin Seoul Madrid Shanghai The Wealth Report "The Wealth Report" (a global perspective on prime property and wealth) is made by the London-based estate agent Knight Frank LLP and the Citi Private Bank. The report includes a "Global Cities Survey", evaluating which cities are considered the most important to the world's HNWIs (high-net-worth individuals, having over $25 million of investable assets each). For the Global Cities Survey, Citi Private Bank's wealth advisors, and Knight Frank's luxury property specialists were asked to name the cities that they considered the most important to HNWIs, in regard to "economic activity", "political power", "knowledge and influence", and "quality of life". Most important cities to UHNWIs in 2020: London & New York City Paris Tokyo Hong Kong Chicago & Los Angeles Singapore Munich Amsterdam The World's Most Talked About Cities A study by ING Media, a London-based built environment communications firm, has ranked 250 global cities by total online mentions across social media and online news for 2019. It found that a fifth of digital mentions were for Tokyo, New York City, London, and Paris,