It appears precious metals are once again enticing investors. After ignoring gold and silver for much of 2015, investors added nearly $400 million to U.S. exchange-traded funds backed by precious metals through October 20th. That figure represents the largest ETF inflow since February. Bullion sales at both the U.S. and Royal Canadian Mints surged over the summer. Gold and silver seem to be gaining favor based on expectations that the Federal Reserve could wait until early 2016 or later to raise interest rates. Statistical data attempting to show a correlation between interest rates and commodity prices are inconclusive. Higher interest rates have historically taken money out of the stock market. Whether those funds go into precious metals or fixed income options often depends on the political climate at the time.