The doji: indecision
A doji is a candle where the open and close are almost the same, leaving a tiny body with wicks on either side. It represents a standoff: buyers and sellers pushed price around but ended roughly where they started. It signals indecision rather than direction.
A doji after a long trend can hint that momentum is stalling, but on its own it means very little — dojis appear constantly. Its message is "the market is undecided here", which is information, not a signal to act.
The engulfing pattern: a shift in control
An engulfing pattern is two candles where the second's body completely covers the first's body in the opposite direction. A bullish engulfing has a down candle followed by a larger up candle that swallows it; a bearish engulfing is the reverse. It suggests one side suddenly took control.
When it appears at the end of a stretched move or near a watched level, it can add weight to the idea of a turn. But engulfing candles form all the time in the middle of noise where they mean nothing. Location is everything, and even then it is a hint, not a promise.
The pin bar: a rejection
A pin bar has a small body and one long wick, showing that price shot in one direction and was firmly rejected back. A long lower wick suggests buyers rejected lower prices; a long upper wick suggests sellers rejected higher ones. It captures a sharp change of heart within the period.
Pin bars near support or resistance are among the more watched candle signals, but like the others they fail often. The disciplined use of all three shapes is the same: read them as clues about sentiment at a meaningful level, confirm with context, and never enter without a defined stop. They sharpen your reading of the market; they do not remove its uncertainty.