$GLOBALVECT A double bottom is a bullish chart pattern in technical analysis that signals a possible reversal from a downtrend to an uptrend. It looks like the letter “W” on a price chart. Structure First Bottom – price falls and rebounds. Second Bottom – price drops again near the same level but fails to break lower. Neckline Resistance – the peak between the two bottoms. Breakout – confirmation occurs when price breaks above the neckline.