Some jobs bring pleasure, others bring money, and quite a few do both. Recently, LCH Investments released the results of the annual research suggesting that George Soros makes $15 million a day. For one year, the most established investor in the world managed to boost his wealth by $5.5 billion. So, the year of 2013 was rather successful for Soros' Quantum Endowment fund. That has not gone unnoticed as Quantum Endowment topped the list of the world's largest hedge funds in 2013. The successful assets management of the fund, which has $28.6 billion, contributed to the internal statistics of the company. According to the experts, 2013 was the most profitable in the last 5 years. Overall, the fund has brought George Soros $39.6 billion since it was founded in 1972. Soros's secret of success still keeps people guessing as the billionaire yields stable profit several years in a row. Some people think that the business magnate has good foresight, other consider that he benefits from insider information. Anyway, George Soros himself has not revealed his secrets yet. As of September 2013, the fortune of the investor totaled $20 billion, Forbes says.