South African billionaire Nicky Oppenheimer, the countrys second-richest person, has added 1.75 billion to his fortune this year, with nearly 750 million gained since mid-July. His estimated net worth now stands above 13 billion following a revaluation of his assets, according to the Bloomberg Billionaires Index .
Net worth hits 13.3 billion
Oppenheimer, who ranks as the third-richest person in Africa behind Nigerian industrialist Aliko Dangote and fellow South African Johann Rupert, has seen his wealth climb from 11.5 billion on Jan. 1 to 13.3 billion as of this report.