On the tails of yesterday’s DBA/UUP setup, this is a look at how GDX can be useful as a confirmation signal, albeit on a somewhat longer time frame.  These are impressive % gains for a 21 day excursion and it should be noted that the one losing trade…closed on 8/2…had clearly exceeded the 21 day window of opportunity.  Our “N day” stop  would have closed the trade on 7/20 and returned a slight gain of .04 %, but avoided any loss.  Also note that these signals are premised on the Z-Score analysis, not the Z-Rank. Just for the curious…the results of a DBA/GLD pair are much less robust leaving us to ponder possible reasons why.