From Daily FX “Copper is one of the most widely used metals on earth and plays a vital part in everyday life, with uses ranging from electrical wiring to fertilizer. The price of copper is believed to provide a reliable measure of economic health, as changes to copper prices can suggest global growth or an upcoming recession. This link between the global economy and copper prices makes the metal a popular choice among traders who want to speculate on sectors. Copper price charts can be used to assess the sentiment of other financial markets.”