Engulfing candles and who got trapped

There are hundreds of named candlestick patterns. This module covers six shapes, and the reason it stops at six is that every pattern with a name is a story about the same thing: a group of traders who took a position, watched it go wrong, and now need to get out. If you can point to that group on the chart, the pattern has content. If you cannot, it is a shape.

The engulfing candle is the clearest example, so it comes first.

The definition

A bullish engulfing candle is a bullish candle whose body completely covers the body of the previous bearish candle. A bearish engulfing candle is the mirror: a bearish body that covers the previous bullish body.

Two details are commonly argued over. This course uses the strict version:

• Bodies, not wicks. The engulfing body must open at or below the previous close and close at or above the previous open (bullish case). Wicks are ignored.
• The previous candle must be the opposite colour. A green candle engulfing a green candle is just a bigger green candle.

Check: engulfing open 54.05 ≤ previous close 54.10, and engulfing close 55.60 ≥ previous open 54.80. Confirmed.

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   prev          engulfing

Who got trapped

Walk through the two periods as if you were on the wrong side.

During the previous candle, sellers were winning. Anyone who shorted between 54.80 and 54.10 ended the period in profit. Some added on the way down. The close at 54.10 confirmed the move for them.

The engulfing candle opened at 54.05, a tick below the previous close: sellers were still comfortable. Then price reversed and closed at 55.60. Now:

• Every short from the previous candle (54.10 to 54.80) is underwater by 0.80 to 1.50.
• Every short from the engulfing candle's open (around 54.05) is underwater by 1.55.
• Anyone who placed a stop above the previous candle's high (55.00) has already been stopped out, and their buy-to-cover orders were part of the fuel for the move.

The trapped shorts who did not have stops now face a decision. Many of them will cover on any return toward 54.80-55.00, which creates buying pressure exactly where the previous candle's body was. That buying pressure is the pattern's real content. It is not magic; it is a group of people with a known reason to buy at a known price.

Key idea: A bullish engulfing candle matters because it creates a pool of trapped sellers who will buy on any dip. The bigger the engulfed body and the more candles of selling before it, the bigger the pool.

Context makes or breaks it

The same shape in three locations:

1. After five days of decline into a prior swing low (Module 3). There are many trapped shorts, the level has a history of buyers, and the reversal is at a place where buyers are expected. This is the version worth studying.
2. In the middle of a two-month sideways range, with no level nearby. There is a small pool of trapped shorts from one day. Nothing else supports the move. Price is as likely to drift back as to continue.
3. Against a strong downtrend, at no particular level, with the engulfing candle's close still below the last swing high. The pool of trapped shorts exists, but the much larger pool of profitable shorts from the whole trend is still comfortably in profit and will sell the bounce.

Only the first is a setup. The second and third are the shape without the story, and the majority of engulfing candles you will see on any chart are the second and third kind. That is the main reason pattern-only trading fails, and Lesson 4 puts rough numbers on it.

Size relative to normal

Measure the engulfing body against the average range you learned to compute in Module 1. An engulfing body that is 1.5× the average range is a statement; one that is 0.4× the average range is a small red candle followed by a slightly bigger green one, and it engulfs only because both were tiny. Add a minimum: this course treats an engulfing candle as noteworthy only if its body is at least the average range of the last 10 candles.

The stop that follows from the story

Because the story is "trapped sellers will buy dips", the story is falsified if price trades back below the engulfing candle's low (53.85 in the example). At that point the shorts are no longer trapped; they are winning again. That is where a stop belongs for anyone trading the pattern, and Module 5 builds on this: the stop goes where the story breaks, not at a round number of dollars.

Variants you will hear about

• Piercing line / dark cloud cover: the second body covers more than half but not all of the first. The same story at lower intensity; treat as weaker.
• Outside bar: the engulfing candle's high and low also exceed the previous candle's high and low. Lesson 3 covers it; it is the same idea with wicks included.
• Three-candle versions (morning star, evening star): a small middle candle between the two bodies. The middle candle is the pause before the trap springs.

You do not need the names. You need the question: who is trapped, how many, and at what price will they act?

Try it: Find five bullish engulfing candles on any daily chart using the strict definition (check the numbers, do not eyeball). For each, write one sentence naming the trapped group and the price range they are trapped in. Then note whether price returned to that range within the next five candles and what happened when it did.

Recap

• Bullish engulfing: a bullish body that fully covers the previous bearish body; bearish engulfing is the mirror. Bodies, not wicks.
• The content of the pattern is the pool of trapped traders from the engulfed candle who will exit on any return to their entry prices.
• Context decides whether the pool is large enough to matter: after a run, at a level, with the trend is the version worth studying.
• Require the engulfing body to be at least the average range of recent candles.
• The stop belongs beyond the engulfing candle's extreme, because that is where the trapped-trader story stops being true.