William Henry Gates III (born 28 October 1955) is an
American entrepreneur,
software executive,
philanthropist and
chairman of
Microsoft, the software company he founded with
Paul Allen. During his career at Microsoft he has held the positions of
CEO and
chief software architect, and he remains the largest individual shareholder with more than 9% of the
common stock. Gates is one of the best-known entrepreneurs of the
personal computer revolution. Although he is widely admired, his business tactics have been criticized as anti-competitive and in some instances ruled as such in court. Since amassing his fortune, Gates has pursued a number of
philanthropic endeavors, donating large amounts of money to various charitable organizations and scientific research programs through the
Bill & Melinda Gates Foundation, established in 2000. The annual
Forbes magazine's list of
The World's Billionaires has ranked Gates as the richest person in the world from 1995 to 2007, with recent estimates putting his net worth over $56 billion
USD. When family wealth is considered, his family ranks second behind the
Walton family, heirs of
Wal-Mart founder
Sam Walton. In July 2007,
Fortune magazine reported that the increase in value of Mexican billionaire
Carlos Slim's holdings of stock caused him to surpass Bill Gates as the world's richest man.