Will Copper And Crude-Oil Rally Drive Silver?

 | Nov 13, 2017 11:37AM ET

While it is widely believed that commodities are one of the few "undervalued" sectors, sustained rallies have been hard to find over the past few years. Could all that be finally beginning to change?

The key to any commodity rally is weakness in the US dollar. Most commodities trade in dollar terms so a rising dollar generally puts pressure on the sector. In contrast, a falling dollar is usually good for the sector. As you can see in the chart below, the general trend since 2015 has been a flat-to-falling US dollar as measures by the Dollar Index: