A Long Black is a single candle pattern which signals strong selling pressure. Coloured black (or red) to represent bearish sentiment, the longer the candle, the further the close is below the open and the more aggressive the sellers.
Identified as a continuation pattern particularly when found in the price action of a downtrend, the Long Black can also be used as reversal pattern when found in an uptrend.
When charted with high trading volume on a downtrend, the Long Black candle can be used to identify a significant support level. When price breaks the Long Black candle support zone, it signals the downtrend’s strength and its further continuation.