A long black day is followed by a Doji which gaps opposite the trend and
is completely engulfed by the real body of the first day.
In a downtrend or within a pullback of an uptrend, a long black day occurs.
The next day’s gap up comes as a surprise to the shorts who thought
they were sitting on a great position the previous day. The stock closes
where it opens to signify a churn day with neither the bulls nor bears
showing much force after the opening gap up. Reliability of the bullish
Harami Cross is low, so a strong following day is needed for confirmation.