Global X Copper Miners ETF (COPX) The Global X Copper Miners ETF (NYSEARCA: COPX ) represents an equity option for copper investors, tracking the Solactive Global Copper Miners Index. Source: iStockphoto Among the latest data released, Chinese producer price inflation increased to 6.9% in September compared with the year-ago level, beating 6.3% growth in August and the 6.4% forecast by economists. The source went on to explain that Chilean copper producer Codelco announced outlays of $40 billion until 2026 in order to develop key structural projects and upgrade smelters to comply with the country's stringent environmental regulations.