Candlesticks deep dive

Candlestick charting was invented by Japanese rice traders centuries ago, and it survived because it works as a way to visualize human emotion in a market. Every single candle records a fight: buyers trying to push price up, sellers trying to push it down, and where they ended up when the bell rang on that time slice.

The anatomy of a single candle

Each candle encodes four prices for its time period:

• Open — the price when the time slice began
• Close — the price when the time slice ended
• High — the highest price reached during the slice
• Low — the lowest price reached during the slice

The thick part is the body (from open to close). The thin lines sticking out are the wicks (also called shadows) — they mark the high and low that price reached but couldn't hold. Color tells you direction: green (or white) means it closed higher than it opened (buyers won the slice); red (or black) means it closed lower (sellers won).

What the body and wicks actually tell you

The proportions matter as much as the color:

• A long body means one side dominated decisively. A long green body = strong buying; a long red body = strong selling.
• A short body means buyers and sellers were nearly balanced — indecision.
• A long lower wick means sellers pushed price down hard, but buyers fought back and rescued it before the close. That's a sign of buying pressure at those lows.
• A long upper wick means buyers pushed price up, but sellers slammed it back down. A sign of selling pressure at those highs.

This is the core skill: a candle isn't just "up" or "down." It's a record of who tried what and who won. A green candle with a huge upper wick isn't purely bullish — it shows buyers ran out of steam at the top.

The essential single-candle signals

The Doji

Open and close are almost identical, so the body is a thin line. The market opened and closed at the same place despite moving around — perfect indecision. After a long trend, a doji often warns that the trend is running out of energy and a reversal could be near. Context is everything: a doji in the middle of nowhere means little; a doji after a long rally, at resistance, is a yellow flag.

The Hammer & the Shooting Star

A hammer has a small body near the top and a long lower wick — like a hammer hanging down. It says sellers tried to push price way down but buyers overpowered them by the close. Appearing after a downtrend, it's a classic bullish reversal hint. The shooting star is its mirror: small body near the bottom, long upper wick, appearing after an uptrend — a bearish reversal hint.

The Marubozu

A candle with almost no wicks — all body. It means one side was in complete control from open to close, with no pushback. A green marubozu is powerful bullish momentum; a red one, powerful bearish momentum. Strong continuation signal.

Notice the mirror logic: a hammer and a hanging man are the same shape (small body up top, long lower wick) — but a hammer after a downtrend is bullish, while that identical candle after an uptrend is a bearish "hanging man." Likewise the shooting star and inverted hammer share a shape (small body at the bottom, long upper wick). Location in the trend decides the meaning, not the shape alone. This is why context-free pattern memorization fails.

Multi-candle patterns

Engulfing patterns

One of the most reliable two-candle signals. A bullish engulfing is when a green candle's body completely "swallows" the previous red candle's body — buyers didn't just win, they overwhelmed yesterday's sellers. After a downtrend, this is a strong reversal signal. The bearish engulfing is the opposite and signals potential tops.

Morning star & evening star

Three-candle reversal patterns. A morning star (bullish) is: a big red candle, then a small indecisive candle (the "star"), then a big green candle. It paints the story of selling exhausting, indecision, then buyers taking over — like dawn after a dark night. The evening star is the bearish mirror at market tops.

The honest truth about candle patterns

Candlestick patterns are probabilistic hints, not guarantees. A "bullish engulfing" might be followed by more buying — or it might fail completely. Their reliability goes up dramatically when they align with other factors: a key support/resistance level, confirming volume, and the broader trend. A pattern in isolation, on a small time frame, on a thin stock, is mostly noise. Professionals don't trade single candles; they trade confluence — several signals pointing the same way. (That's the entire idea behind tools like our Digital Algo.)