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This chart of Evergreen Energy shows what a rounding bottom looks like. The bottom around the .30 cent area shows how price goes sideways after a big fall, and lets the moving averages catch up(blue line=50 day ma). When price popped above the 50 day(blue line) at .45 cents
approx. was the buy signal.
That's when we see a change(early Feb.) in investor sentiment on this chart.