A number of bullish signals here on the 3-day chart. Perhaps the most bullish is the confirmed support on the bottoming candle together with extreme volume. That's a solid green light. (PS I don't actually hold any XEM).
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Here is a closer view of the bottoming candle.
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excellent, 50 MA average tested and holds on the 3-day chart
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RSI and Stochastic indicators going ballistic on the 1-day chart.
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The bigger picture of the emerging bullish divergence