Global markets are facing a crisis and investors need to be very cautious, billionaire George Soros told an economic forum in Sri Lanka on Thursday.<br />Global currency, stock and commodity markets are under fire in the first week of the new year, with a sinking yuan adding to concern about the strength of China's economy as it shifts away from investment and manufacturing toward consumption and services.<br />Soros, whose hedge-fund firm gained about 20 percent a year on average from 1969 to 2011, has a net worth of about $27.3 billion, according to the Bloomberg Billionaires Index.<br />The Nikkei Stock Average Volatility Index, which measures the cost of protection on Japanese shares, has climbed 43 percent in 2016 and a Merrill Lynch index of anticipated price swings in Treasury bonds rose 5.7 percent.
