The country’s richest politician continues to juggle leading New York City and his $22.5 billion media empire Bloomberg LP. His eponymous financial news firm is growing: this year it celebrated installing its 300,000th data terminal, and 12% revenue growth is expected. In the middle of his third mayoral term; spent $90 million of his own money mounting that campaign, a record broken by eBay billionaire Meg Whitman in November’s midterms. Has given away $1.6 billion to charities to date, funding the arts and public health.
Net Worth: $18.1 billion