That's right, multiple timescale fractal analysis on wave trend oscillators. In this case, the bottom row 8-day oscillator for GDX gave a crossover buy signal in mid-September 2015 that didn't roll over as overbought sell until August 2016 for a gain > 100%. Oscillators on all timescales shorter than 8 days embedded with hundreds of premature sell signals to choose from!
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