Silver ETF Up 30% in 2011

Exchange traded funds (ETFs) that invest in silver and silver miners fell sharply Monday. Still, the $15 billion iShares Silver Trust (NYSEArca: SLV) remains up 30% year to date. ProShares Ultra Silver (NYSEArca: AGQ) has gained more than 60% so far this year according to Morningstar, although the...