Gold's shining rally is coming to a close, says Trading Analysis founder Todd Gordon, who is betting against the yellow metal thanks to what he sees in the charts.

Tuesday on CNBC's "Trading Nation," Gordon explained that there were two reasons why he wanted to be short gold. First, Gordon points to the metal's inverse relationship to the U.S. dollar. Comparing a chart of the gold-tracking ETF GLD to the dollar-tracking ETF UUP, Gordon points out that there have already been four separate points of the year where UUP moved lower, and GLD rallied.