Copper-related exchange traded funds rebounded Friday after the copper market suffered through its worst weekly pullback in a year. On Friday, the United States Copper Index Fund (CPER) rose 0.3% and the iPath Series B Bloomberg Copper Subindex Total Return ETN (JJC) was 0.7% higher. Over the past week, JJC declined 8.9% and CPER decreased [...] The post Copper ETFs Rise After the Industrial Metal Suffered a Horrible Week appeared first on ETF Trends .