Net worth: $2.1 billion
Source of wealth: Chobani
Ulukaya, 46, received a $3,000 loan from the Small Business Administration in 2007 and used it to buy an old yogurt plant in Norwich, New York. Chobani now sells over $1 billion of yogurt annually and is America's most popular brand of Greek yogurt, Forbes reports.
Ulukaya now advocates for companies to get involved in the ongoing refugee crisis, Bloomberg reported in August. Chobani recruits refugees for jobs at its plants and encourages other companies to do the same.
Read more: The Chobani billionaire who turned a $3,000 loan into a yogurt empire calls himself an 'anti-CEO' and thinks other CEOs should do the same