A Short Black is a single-candle pattern which signals weak selling pressure.
Coloured black (or red) representing price has closed below the open, a Short Black candle is as its’ name suggests: short bodied and black. The lengths of the wicks (or shadows) are unimportant however, Short Black candles with wicks longer than the median typically outperform after a breakout.
Although Bulkowski suggests the signal performance is near random, a Short Black candle appearing in a downtrend may suggest a continuation of the current trend while its’ appearing in an uptrend may form part of a bearish reversal pattern.
While price generally breaks out downward from the Short Black candle, traders should look for a Short Black candle/s after observing a strong trend (long candles) to signal a temporary price correction.