Hammer and Gravestone
The hammer is not as strong as the dragonfly candlestick, but also signals reversal after a down-trend: control has shifted from sellers to buyers. The shadow of the candlestick should be at least twice the height of the body.
A gravestone is identified by open and close near the bottom of the trading range. The candlestick is the converse of a hammer and signals reversal when it occurs after an up-trend.
