The Bullish Doji Star forms after a downtrend when a long bearish candle is followed by a doji, a candle whose open and close are nearly equal, that gaps below the first candle's body. The doji shows that the selling momentum has stalled and the market is undecided, so the pattern warns of a possible bottom; traders wait for a bullish candle on the next bar, which would complete a Morning Doji Star.
