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. The American oil magnate John D. Rockefeller became the world's first confirmed U.S. dollar billionaire in 1916.
Black billionaires are individuals who are of predominantly African ancestry with a net worth of at least US$1 billion.
The Forbes list of Australia's 50 richest people is a list of Australia's fifty wealthiest individuals and families, ranked by personal net worth published annually by Forbes Asia magazine. The list provides a short summary on some of the known business activities of the individuals and families, together with commentary on how their ranking has changed from the previous year, if listed. The list is published annually in January in an online format and updated daily, also online.
The World's Billionaires is an annual ranking of people who are billionaires, i.e., they are considered to have a net worth of US$1 billion or more, by the American business magazine Forbes. The list was first published in March 1987. The total net worth of each individual on the list is estimated and is cited in United States dollars, based on their documented assets and accounting for debt and other factors. Royalty and dictators whose wealth comes from their positions are excluded from these lists. This ranking is an index of the wealthiest documented individuals, excluding any ranking of those with wealth that is not able to be completely ascertained.
The World's Billionaires 2010 edition was 24th annual ranking of The World's Billionaires by Forbes magazine. The list estimated the net worth of the world's richest people, excluding royalty and dictators, as of February 12, 2010. It was released online on March 10, 2010. Forty reporters across 13 countries contributed to the list. Carlos Slim and Bill Gates were featured on the cover.
The Bloomberg Billionaires Index, launched in March 2012, is a daily ranking of the world's 500 richest people based on their net worth. It features a profile of each billionaire, and includes a tool that allows users to compare the fortunes of multiple billionaires. The index is updated every day at the close of trading in New York.
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