Mexico’s Carlos Slim Helu and his family have a net worth of $53.5 billion, due in large part to Slim’s telecommunications business endeavors.

Number 2: Bill Gates

American Microsoft co-founder and chairman, 54-year-old William Gates III has a net worth of $53 billion.

Number 3: Warren Buffett
79-year-old American investor Warren Buffett is worth $47 billion.

Number 4: Mukesh Ambani

52-year-old Indian business tycoon Mukesh Ambani is chairman of Reliance Industries. He’s worth $29 billion.

Number 5: Lakshmi Mittal

Lakshmi Mittal is a 59-year-old Indian CEO and the current vice president of the World Steel Association. Mittal is worth $28.7 billion.

Number 6: Lawrence Ellison

Lawrence Ellison is an American entrepreneur, co-founder and CEO of Oracle Corporation. At 65 years of age, he is worth $28 billion.

Number 7: Bernard Arnault

61-year-old French CEO of LVMH, the conglomerate of luxury brands Louis Vuitton and Dior, is worth $27.5 billion.

Number 8: Eike Batista

Eike Batista is a Brazilian entrepreneur and founder of several companies, predominantly in the mining industry. At 53, he is worth $27 billion.

Number 9: Amancio Ortega

Worth $25 billion, Spanish billionaire Amancio Ortega is the chairman of the Inditex Group. He is 74.

Number 10: Karl Albrecht

90-year-old German entrepreneur Karl Albrecht’s net worth is $23.5 billion. Albrecht co-founded the popular supermarket chain Aldi.