The second most successful investment manager reports portfolio. : George Soros, one of the world’s foremost investors, ceased managing investment funds in 2011 after earning about 20% average annual returns since founding Soros Fund Management in 1969. As the chairman of the firm’s second iteration managing family and foundation money, Soros and managers purchased 105 stocks in the third quarter and sold out of 70. George Soros, the second most successful fund manager, trimmed his unsuccessful bets against the market in the third quarter, according to his portfolio update.