A billionaire is a person with a net worth of at least one billion units of a given currency, usually of a major currency such as the United States dollar, euro, or pound sterling. It is a sub-category of the concept of the ultra high-net-worth individual. The American business magazine Forbes produces a global list of known U.S. dollar billionaires every year and updates an internet version of this list in real time.[1] The American oil magnate John D. Rockefeller became the world's first confirmed U.S. dollar billionaire in 1916.[2]
As of April 2024,[update] there are 2,781 billionaires worldwide, with a combined wealth of over US$14.2 trillion, up from US$12.2 trillion in 2023.[3][4] According to a 2024 Oxfam report, the world's top 1% of earners own more combined wealth "than 95% of humanity".[5] As of October 2024, seventeen people have reached the status of USD centibillionaires, meaning that each has had a net worth of at least $100 billion.[6]