Double Bottoms A double bottom forms when the price makes a low within a downtrend, and then pulls back to the upside. On the next decline the price stalls near the prior low, then rallies above the pullback high. It's called a double bottom because the price stalled in the same area twice, unable to drop below that support area.
The pattern is complete, and traders may take long positions, when the price rallies back above the pullback high.