America’s 16 richest billionaires: Jeff Bezos, his ex-wife MacKenzie Scott, Bill Gates, Mark Zuckerberg and Elon Musk all feature – but who gives the most back?

While tech moguls continue to dominate, Walmart heirs and inherited wealth also makes a strong appearance on Forbes’ and Bloomberg’s ranks of the USA’s wealthiest – with the 4 richest people in America also the richest people in the world
16. Michael Bloomberg

Net worth: US$54.9 billion (per Forbes estimates)
Age: 78
Industry: finance, technology
Source of wealth: self-made; Bloomberg LP
Net worth year-over-year change: not readily available
Michael Bloomberg, former Democratic presidential candidate and long-time New York City mayor, derives a majority of his wealth from his financial services company, Bloomberg LP. In the 1990s, he expanded the company to form Bloomberg News and TV.
His eponymous company currently makes about US$10 billion in annual revenue and Bloomberg maintains control over 88 per cent of the company.
Bloomberg is fairly generous with his wealth and is known to donate to social issues like gun control and climate change. He donated more than US$3 billion of his fortune in 2019 alone.