The Hammer is a bullish reversal candlestick. Hammer candlesticks occur when price moves significantly lower after the open, but rebounds to close well above the low. In a perfect hammer, this tail is twice the length of the body and the candlestick will have no upper shadow or wick. The smaller the body and the longer the tail, the more significant the hammer is as a bullish indicator. Hammers form at trend bottoms. If this candlestick forms during an advance, it is called a Hanging Man.