Facebook co-founder and CEO Mark Zuckerberg is now the sixth-richest person in the world.

Zuckerberg surpassed oil magnates Charles and David Koch as the company’s stock soared 13 per cent, reported Times of India.

‘The social networking company reported a 52% rise in fourth-quarter sales yesterday, while its net income saw a twofold increase to $1.56 billion.’

‘These earnings beat street estimates, resulting in the rise in shares. As most of Zuckerberg’s fortune is tied to his holdings in Facebook, the stock price increase made him richer by $6 billion in one day.’

‘The 31-year-old is now worth $47.5 billion. The only people wealthier than Zuckerberg, according to , are: Microsoft co-founder Bill Gates ($78 billion), Zara founder Amancio Ortega ($69.7 billion), the Oracle of Omaha Warren Buffett ($59.4 billion), Amazon founder & CEO Jeff Bezos ($55.8 billion) and telecom magnate Carlos Slim Helu ($47.5 billion).’

‘Notably, the five richest people in the world have seen their wealth decrease over the past year.’