THE 2018 LIST
#1 Jeff Bezos ($112B)- Amazon's chief Jeff Bezos is the first person to top $100 billion as number one on the Forbes list of the World's Billionaires.
- He owns 16% of e-commerce colossus Amazon, which he founded in a garage in Seattle in 1994.
- Bezos attended Princeton and worked at a hedge fund before quitting to sell books online.
- His other passion is space travel: His aerospace company, Blue Origin, is developing a reusable rocket that Bezos says will carry passengers.
- Bezos purchased The Washington Post in 2013 for $250 million.
- With his wife Melinda, Bill Gates chairs the Bill & Melinda Gates Foundation, the world's largest private charitable foundation.
- The foundation works to save lives and improve global health, and is working with Rotary International to eliminate polio.
- Gates has sold or given away much of his stake in Microsoft -- he owns just over 1% of shares -- and invested in a mix of stocks and other assets.
- He remains a board member of Microsoft, the software firm he founded with Paul Allen in 1975.
- In late 2016, Gates announced the launch of a $1 billion Breakthrough Energy investment fund with about 20 other people.
- Known as the "Oracle of Omaha," Warren Buffett is one of the most successful investors of all time.
- He runs Berkshire Hathaway, which owns more than 60 companies, including insurer Geico, battery maker Duracell and restaurant chain Dairy Queen.
- The son of a U.S. congressman, he first bought stock at age 11 and first filed taxes at age 13.
- He has committed to giving more than 99% of his fortune to charity. So far he has given away nearly $32 billion, much of it to the Gates Foundation.
- With friend Bill Gates he launched The Giving Pledge in 2010, asking billionaires to donate half their wealth to charitable causes.
- One of the world's ultimate taste-makers, Bernard Arnault oversees an empire of 70 brands including Louis Vuitton and Sephora.
- Record results at LVMH and a megadeal to buy out nearly all of Christian Dior helped boost Arnault's fortune by $30.5 billion in one year.
- Arts patron is the visionary behind the $135 million Frank Gehry-designed Foundation Louis Vuitton museum in Paris' Bois de Boulogne, opened in 2014.
- Mark Zuckerberg, Facebook's CEO, has seen his net worth soar as the social network's stock price has skyrocketed.
- In April 2018, he testified before Congress after it was revealed that Facebook shared users' data with political consulting firm Cambridge Analytica.
- Zuckerberg started Facebook at Harvard in 2004 at the age of 19 for students to match names with faces in class.
- He took Facebook public in May 2012 and still owns nearly 17% of the stock.
- Zuckerberg and his wife, Priscilla Chan, have pledged to give away 99% of their Facebook stake over their lifetimes.