How to Read a Candlestick Chart
Candlestick charts pack four prices into one symbol — Open, High, Low, Close — and let you read a stock's entire session in a glance. This lesson builds the skill from a single candle up through multi-candle patterns.
- Estimated time
- ~12 min
- Difficulty
- intro
- Sources
- 3 sources
The Atomic Unit: One Candle, Four Numbers
Every candlestick encodes exactly four prices from a single time period — whether that period is one minute, one day, or one week:
- Open (O): The first trade price when the period begins.
- High (H): The highest price reached during the period.
- Low (L): The lowest price reached.
- Close (C): The last trade price when the period ends.
These four numbers get compressed into one symbol with two parts:
The body — a rectangle spanning Open to Close. This is where the real action happened. A tall body means a big gap between opening and closing price; a tiny body means indecision.
The wicks (also called shadows) — thin lines extending above and below the body. The upper wick shows how high price reached before being pushed back. The lower wick shows how low price fell before buyers stepped in.
Reading one candle
Imagine a stock opens at 110 (high), dips down to 95.
- Body: 95 (close) = a 15-point bullish body (close above open, so green).
- Upper wick: 110 = 15 points above the body — sellers rejected the highs.
- Lower wick: 80 = 12 points below the body — buyers rejected the lows.
In one symbol you see: buyers ended up winning the day, but both sides fought hard.
Drag the sliders below to build any candle you want and see how each number maps onto the symbol:
Check your understanding
A candle has Open=50, High=80, Low=45, Close=55. What does the upper wick represent?
Direction and Color: Bullish vs Bearish
The color of the body is the fastest signal a candlestick gives you:
- Green (or white) body — Close is above Open. Buyers won the period. Called bullish.
- Red (or black) body — Close is below Open. Sellers won the period. Called bearish.
But color alone isn’t enough. The relative size of the body and wicks tells you how convincingly one side won.
| Feature | Bullish reading | Bearish reading | |
|---|---|---|---|
| Large body, tiny wicks | Strong bull session — buyers in control the whole time | Strong bear session — sellers in control the whole time | |
| Small body, long lower wick | Hammer — sellers tried to push lower, buyers rejected them | Inverted hammer — less reliable signal in a downtrend | |
| Small body, long upper wick | Shooting star — buyers tried to push higher, sellers rejected them | Hanging man — a caution sign after an uptrend | |
| No body (Open ≈ Close), wicks both sides | Doji — indecision; watch next candle | Doji — indecision; watch next candle |
Explore the canonical bullish and bearish candle families below. Each one represents a different story about who controlled the session:
Common misconception
A green candle means the stock went up compared to yesterday.
What's actually true
Green only means the Close is above the Open within that candle’s time period. A stock can open lower than yesterday’s close and still print a green candle if it recovers by the period’s end. Always compare the close of one candle to the close of the previous one to measure day-over-day movement.
Check your understanding
A candle has Open=90, High=115, Low=88, Close=91. How would you classify it?
Combining Candles: Patterns Worth Knowing
A single candle is a sentence. A sequence of candles is a paragraph. The most useful patterns involve two or three candles read in context — specifically, in the context of the trend before them.
Context is everything
Every pattern below is a conditional signal, not a guarantee. A hammer at the bottom of a downtrend is interesting. The same shape mid-rally is just noise. Always ask: where is this candle appearing on the chart?
Bullish Engulfing
Setup: You’ve watched five bearish (red) candles in a row — the stock has been sliding.
The pattern: The next candle opens below the previous red close, then rallies so hard that it closes above the previous red open. The green body completely engulfs the previous red body.
What it means: Buyers didn’t just match the sellers — they overwhelmed them in a single session. The prior selling pressure was absorbed and reversed. This is one of the strongest two-candle reversal signals.
Bearish Engulfing
Setup: Five green candles — the stock has been climbing.
The pattern: The next candle opens above the previous green close, then falls so hard it closes below the previous green open. The red body swallows the green body whole.
What it means: Sellers dominated the entire session and erased the prior day’s gains. Potential end of the uptrend.
Show three more patterns worth memorizing
Doji: Open and close are essentially equal — tiny or absent body, wicks on both sides. The market couldn’t decide. By itself it’s neutral; after a long trend it can mark exhaustion.
Morning Star (3-candle bullish reversal): (1) large bearish candle, (2) small-bodied candle gapping down (indecision), (3) large bullish candle that recovers into the first candle’s body. Buyers return after a pause.
Evening Star (3-candle bearish reversal): The mirror image of the morning star. (1) large bullish candle, (2) small-bodied candle gapping up (indecision), (3) large bearish candle that erases the first candle’s gains. Sellers return after a pause.
Now practice recognizing these patterns on a real chart. The highlighted candles form a named pattern — can you identify it?
Check your understanding
You see a hammer candle after five consecutive red (bearish) candles. What does the hammer's long lower wick tell you?
Pitfalls: What Novices Get Wrong
Common misconception
A red candle means the stock fell; a green candle means it rose.
What's actually true
Color encodes the relationship between Open and Close within the same period. A stock can gap down sharply at the open (lower than yesterday’s close) and still print a green candle if it rallies before the period ends. Line charts show close-to-close movement; candlesticks show open-to-close movement within the period. They tell different stories.
Common misconception
One strong candle is a clear buy or sell signal.
What's actually true
Single candles are inputs, not conclusions. A hammer with no volume behind it, appearing mid-trend rather than at a support level, is statistically weak. Experienced traders look for pattern confluence: the candle shape, where it appears in the trend, the volume, and nearby support/resistance levels all need to align before a pattern has meaning.
About volume: Candlestick charts display price only. Volume — how many shares traded in the period — is usually shown as a bar chart directly below the candlestick chart. A bullish engulfing candle on 10x average volume is much more significant than the same shape on thin volume. The candle shows what happened; volume hints at how much conviction was behind it.
Common misconception
Candlestick patterns are predictive formulas.
What's actually true
They’re conditional probabilities. Decades of back-testing show that classic patterns have modest predictive value — often in the 52–58% range in favorable conditions. [Encyclopedia of Candlestick Charts] That’s enough to inform a probabilistic strategy but not enough to act on in isolation. Context, trend, support/resistance, and volume all modify the signal.
Check your understanding
A bearish engulfing pattern appears on a stock after three green candles. What additional information would most strengthen or weaken this signal?
Check your understandingQ 1 / 5
Which part of a candlestick represents the price range between Open and Close?
Ownable artifact — your synthesis task:
Pull up any freely available stock chart (e.g. on Yahoo Finance or TradingView) set to daily candles. Find at least one example of each of these in the last 30 days: a marubozu, a doji, and a candle with a notably long wick. For each, write one sentence describing what the buyers and sellers were doing during that session. You’ve learned the vocabulary; this is the first paragraph you write in it.