Gravestone Doji

(Hey! Hold on. Don't run to crematorium. Its just that, this candlestick resembles a gravestone.)

Formation
These candle lines have no real body. Market opens and closes at the low of the day. Only upper shadow is present above a small horizontal line.

Importance
This happens when both supply and demand are almost equal. That means the market is neutral or it is deciding the next movement.

They may occur at many places in a chart. But at the top and bottom of a trend they become significant. It predicts the top more effectively than the bottom.

Because of this they form important support and resistances.