GlossaryConcept
What Is a Candlestick?
A candlestick is a chart pattern that displays the open, high, low, and close prices of an asset over a specific time period in a single visual element.
By COINOTAG Research DeskLast updated Sources
What is a Candlestick?
A candlestick is a chart element that summarizes an asset's price action over a chosen period in one shape, using the open, high, low and close. These four values are known as OHLC.
Where a line chart shows only the close, a candlestick chart also shows the struggle inside the period: where the price started, how far it went up and down, and where it finished. For a general introduction to chart reading, the crypto technical analysis guide is a good starting point.
How Does It Work?
Each candle is a summary of all trades in the chosen timeframe. On a 1-hour chart each candle covers one hour; on a daily chart, one day. When the period starts, the first trade price becomes the open; the highest and lowest prices during the period are recorded; the last trade price becomes the close. When the period ends, the candle "closes" and a new one begins.
That is why the latest, unfinished candle can still change. Many analysts only judge a candle's shape after the period has closed.
History and Evolution
Candlestick charts trace back to rice trading in Japan. According to the history published by Japan Exchange Group (JPX), the Dojima rice market in Osaka was officially recognized in 1730 and became one of the early examples of futures trading. Tradition credits the rice merchant Munehisa Honma with the candle-reading ideas of that era.
The method spread in the West through Steve Nison's Japanese Candlestick Charting Techniques, published in 1991. Today candlesticks are the default view on most stock, currency, commodity and crypto charts.
Key Concepts
- OHLC: open, high, low, close.
- Body: the thick part between open and close.
- Wick (shadow): the thin lines above and below the body.
- Pattern: a named shape formed by one or more candles.
- Timeframe: the length of time one candle represents.
Anatomy of a Candle: Open, High, Low, Close
- Body: if the close is above the open, it is a bullish (up) candle; if below, a bearish (down) candle. A long body shows one side dominated the period; a short body shows buyers and sellers ended roughly balanced.
- Upper wick: runs from the top of the body to the period's high. A long upper wick says the price went up and was pushed back by selling.
- Lower wick: runs from the bottom of the body to the period's low. A long lower wick says the price dropped and recovered on buying.
A long-bodied candle with no wicks, or very short ones, is called a marubozu: the price opened near the low and closed near the high (or the reverse), showing one side in full control for the whole period. The ratio of wick to body gives a candle its "character": the same close can signal indecision on a long-wicked candle and conviction on a wickless one.
Color Conventions Differ by Region
In the US, Europe, Turkey and the Gulf, the common convention is green = up and red = down. In South Korea and China it is the reverse: up candles are red and down candles blue or green. Traditional Japanese charts draw up candles white (hollow) and down candles black, with colors varying by platform. On COINOTAG charts, in every language edition, up candles are green and down candles red. What matters is where the close sits relative to the open, not the color.
Common Patterns and Their Limits
| Pattern | Shape | Traditional reading | Limit |
|---|---|---|---|
| Doji | Open and close almost equal | Indecision | Very common in sideways markets; weak on its own |
| Hammer | Small body, long lower wick, after a decline | Buying interest lower down | Weak without confirmation from the next candle |
| Shooting star | Small body, long upper wick, after a rise | Selling pressure higher up | Often fails in strong trends |
| Engulfing | Body fully covers the previous candle's body | Attempted change of direction | Worth less on low volume or at an unimportant level |
Where a pattern forms matters more than its shape: the same hammer draws more attention at a clear support and resistance zone than at a random price.
Timeframe and Volume Confirmation
A pattern's weight depends on the timeframe. A doji on a 5-minute chart says far less than a doji on a weekly chart, because it summarizes fewer trades over less time. An engulfing candle that forms on high trading volume is treated as more meaningful than one on thin volume. Because crypto trades without a break, the closing time of the daily candle can vary by platform, so the same day can show different candles on different charts. Many analysts therefore check a pattern on a higher timeframe (say, daily) and then on a lower one (say, 4-hour); agreement between the two strengthens the reading.
Is a Candle Pattern a "Signal"? Probability, Not Certainty
Candle patterns are probability clues about the balance between buyers and sellers within a period; they do not say where the price will go. The same pattern can lead to different outcomes in different market conditions. That is why patterns are usually weighed together with levels, volume and indicators such as RSI, MACD or the moving average. No single candle should be expected to explain every move.
Live Examples: Detected Candle Patterns
COINOTAG technical analysis pages detect patterns such as the doji, engulfing candles and pin bars on the daily chart and list them among the sources behind support and resistance levels. On the crypto side, see Bitcoin technical analysis and support and resistance levels and Ethereum technical analysis; for stocks and commodities, NVIDIA technical analysis and Gold (XAU) technical analysis. Pivot points are another method behind those levels.
For an overview across many assets, use the crypto technical summary table and the stocks and commodities technical summary.
Practical Example
Scenario (made-up numbers): an asset slides from $120 to $100 over a few days. The next day it opens at $100, drops to $94 intraday and closes at $101, leaving a candle with a small body and a long lower wick.
- The long lower wick says there was buying interest around $94; the shape resembles a hammer.
- If the candle formed at an old support zone near $100, it draws more attention.
- If the next day closes below the hammer's low, the pattern is considered void.
This scenario does not predict a direction; it shows how the same candle is read in context.
Related Terms and Next Steps
Reading candlestick charts well means combining them with support and resistance levels, volume confirmation and momentum indicators.
Frequently Asked Questions
What is a candlestick?
A candlestick is a chart element that summarizes an asset's open, high, low and close (OHLC) over a chosen period in one shape. The method comes from Japanese rice trading.
How do I read a candlestick?
Start with the body: if the close is above the open it is an up candle, if below a down candle. Body length shows how dominant one side was, and the wicks show how far the price travelled during the period before coming back.
What does a doji mean?
A doji is a candle whose open and close are almost equal, showing buyers and sellers ended the period balanced. It draws more attention after a clear trend or at an important level; in a sideways market it means little on its own.
What is an engulfing candle?
An engulfing candle has a body that fully covers the previous candle's body and the opposite color. It is read as an attempted change of direction and is treated as more meaningful on high volume and at an important level.
Are candle patterns reliable on their own?
No. Candle patterns are probability clues, not certainties. They are usually weighed together with support and resistance levels, trading volume and indicators such as RSI and MACD.
What do red and green candles mean?
In Western markets the common convention is green for an up candle (close above open) and red for a down candle. In South Korea and China the convention is reversed. On COINOTAG charts up candles are green and down candles red.