#10 S. Robson Walton is worth $34.8 billion
Change from last year: +$1.5 billion
Age: 70
S. (Samuel) Robson Walton is the eldest son of Wal-Mart's founder Sam Walton, and has been the chairman of the Wal-Mart board since 1992.
He attended New York's Columbia University School of Law and practiced at Oklahoma law firm Conners & Winters before re-joining the Wal-Mart fold.
Source: Forbes
#9 Alice Walton is worth $34.9 billion
Change from last year: +$1.4 billion
Age: 64
Alice is another daughter of Wal-Mart founder Sam Walton and an heiress to the family fortune.
She is a major art collector and currently heads the 200,000-square-foot Crystal Bridges Museum of American Art.
Source: Forbes
#8 Michael Bloomberg is worth $35 billion
Change from last year: +$4 billion
Age: 72
Michael Bloomberg is the former mayor of New York and is now back as CEO of Bloomberg LP, with an 88% stake.
Before becoming the mayor of NYC, Bloomberg was a self-made billionaire and Harvard Business School alum. You can read about his journey to success here.
Source: Forbes
#7 Jim Walton is worth $36.6 billion
Change from last year: +$2.2 billion
Age: 64
James Carr Walton (who goes by Jim) is the youngest son of Sam Walton and is on the Wal-Mart board of directors.
Jim is also a member of the Republican Party of Arkansas and is currently the Chairman and CEO of Arvest Bank Group, Inc., which has branches in Arkansas, Kansas, Oklahoma and Missouri.
Source: Forbes
#6 Christie Walton and family are worth $38 billion
Change from last year: +$2.6 billion
Age: 59
Christy Walton is the wealthiest woman on the Forbes 400 list this year and is also the richest woman in the world. She married into the Wal-Mart family through her late husband John Walton, who died in a plane crash.
Her wealth has soared with the value of the Wal-Mart shares she inherited, pushing her net worth to $38 billion.
Source: Forbes
#4 (TIE) David Koch is worth $42.9 billion
Change from last year: +$6 billion
Age: 74
David, along with brother Charles, is a co-owner and the executive vice president of Koch Industries, the second largest privately-held company in the world. The brothers have added $5 billion in new acquisitions to their empire since last year.
David is a major donor to the Republican Party. He also had the David H. Koch Plaza dedicated to himself in September at The Metropolitan Museum of Art.
Source: Forbes
#4 (TIE) Charles Koch is worth $42.9 billion
Change from last year: +$6 billion
Age: 78
Charles is a co-owner and executive vice president at Koch Industries, the second largest privately-held company in the world, along with his younger brother David. The brothers have added $5 billion in new acquisitions to their empire since last year.
Charles is also a major donor to the Republican Party, and he and his brother have been accused of "trying to buy the country."
Source: Forbes
#3 Larry Ellison is worth $50 billion
Change from last year: +$9 billion
Age: 70
Oracle co-founder Larry Ellison stepped down from his position as CEO this year. His wealth has climbed to $50 billion, which is a $9 billion increase since 2013.
Ellison did not even graduate from college, but that did not stop him from doing incredibly well for himself. In addition to all of his fancy toys, Ellison owns a 97% stake in the Hawaiian island of Lanai.
Source: Forbes
#2 Warren Buffett is worth $67 billion
Change from last year: +$8.5 billion
Age: 84
Warren Buffett’s fortune continued to climb despite him being one of the most generous billionaires in the world. He can thank the success of his company Berkshire Hathaway, as well as his position as the company's primary shareholder and CEO.
He is known as the ‘Oracle of Omaha’ with his company being the largest shareholder of Coca-Cola.
Source: Forbes
#1 Bill Gates is worth $81 billion
Change from last year: +$9 billion
Age: 58
Bill Gates is the founder and owner of Microsoft. He famously dropped out of Harvard after conceiving the company.
His wealth is from shares in Microsoft, but also from Cascade — a private company that doesn’t report it’s earnings. It’s estimated that Cascade has made Gates as much as $6 billion in the past 6 months.
Gates is also known for his incredible philanthropy and has given away $30 billion to The Bill & Melinda Gates Foundation since 2000.
Source: Forbes