Depending on the data, New York either has 146 or 66 billionaires.
Owning $1 billion sounds straightforward, but the world's biggest wealth rankings don't all measure fortunes the same way. From family homes and private companies to where someone lives, the rules vary more than most people realise.
The world's three biggest wealth rankings – compiled by Forbes, Hurun and New World Wealth for Henley & Partners – all aim to identify the world's richest people.
Depending on which report you read, New York is home to anywhere between 66 and 146 billionaires. The city has not changed. The methodology has.
Forbes counts 123 billionaires in New York. Hurun puts the figure at 146. Henley & Partners counts just 66, less than half of Hurun's figure. They are all examining many of the same individuals. The difference is not arithmetic. It is methodology.
