Although silver has been unable to sustain gains above $40 an ounce, one fund manager says the precious metal has undeniable momentum, which could push prices back to their 2011 record highs. In an interview with Kitco News, Nate Miller, Vice President of Product Development at Amplify ETFs, said that surging investment demand for silver has fueled significant growth. Amplify’s Junior Silver Miners ETF (NYSE: SILJ) has nearly doubled in size, with assets under management now valued at roughly $1.8 billion. The firm has also added another ETF to its lineup: the Amplify SILJ Covered Call ETF (NYSE: SLJY), which invests ... (full story)