Why Is Global X Copper Miners ETF ( $COPX) Down 3.57% Today? (Find out why any stock moved today on Tickeron.) The COPX ETF declined 3.57% on Monday, shedding $3.10 to trade near $83.63 versus a prior close of $86.73. The primary catalyst was weaker-than-expected Chinese industrial profit data, which cooled the demand outlook for the world's largest copper consumer. Rising crude oil prices and a stronger U.S. dollar added to selling pressure on industrial metals. $ICOP $COPP $PICK $BATT $MXI