Silver, known for being a market of extremes, is living up to its reputation this year. Prices rallied 17% in the first four months of the year, only to reverse and wipe out those gains. Despite the selloff, investors are pouring money into exchange-traded funds, and assets have reached a record 21 211 metric tons, valuing the holdings at $11-billion. At the same time, the picture is bearish in the futures market, where hedge funds now hold the first net-short position in two years.