Engulfing patterns are some of the cleanest two-candle reversal signals because they encode a clear shift in control. A bullish engulfing prints in a downtrend: the first candle is a smaller red body; the second candle opens at or below the prior close and rallies all the way through, closing above the prior open. The second body completely covers the first body — buyers didn''t just edge out sellers, they overwhelmed them.
A bearish engulfing is the mirror image after an uptrend: a smaller green body followed by a larger red body that opens at or above the prior close and closes below the prior open. The pattern says momentum changed hands in one session.
What earns the pattern its weight is the scope of the move within a single candle. A bullish engulfing isn''t just a green candle after a red one; it''s a green candle that swallows the prior red body, ideally in volume that confirms participation. The wider and more decisive the engulfing candle, the more conviction it implies.
Engulfing patterns are strongest when they print at structurally meaningful levels: a tested support for bullish engulfing, a tested resistance for bearish engulfing. They are weakest when they appear in the middle of a range or far from any level, because there''s nothing structural for the new conviction to defend.
The invalidation is symmetric: for a bullish engulfing, a close back below the engulfing candle''s low says the conviction was premature. For a bearish engulfing, a close back above the engulfing candle''s high does the same in reverse. Like all candle patterns, engulfings work best when paired with confirmation — typically the next candle holding the new direction — and when the surrounding trend and structure align.