What a Single Candle Tells You
A Japanese candlestick summarizes price action over a period you choose, whether that is one minute, one hour or one full day. Every candle is built from four prices: the open, the high, the low and the close. The technique traces back to rice traders in eighteenth-century Japan and became widely known among Western traders in the early 1990s. It is now the default chart type on most trading platforms.
A candle has two parts. The body is the thick rectangle between the open and the close. The wicks, also called shadows, are the thin lines above and below the body that mark the highest and lowest prices reached during the period. If the close is above the open, the candle is bullish and is usually drawn in green or white. If the close is below the open, it is bearish and usually drawn in red or black. Colors can be changed in your platform settings.
Here is a simple example. Suppose an hourly candle on EUR/USD opens at 1.0850, climbs to 1.0880, dips to 1.0835 and closes at 1.0872. The body runs from 1.0850 to 1.0872, which is 22 pips. The upper wick runs from 1.0872 to 1.0880, which is 8 pips, and the lower wick from 1.0835 to 1.0850, which is 15 pips. In plain words: buyers were in control for most of the hour, sellers tried to push the price lower at some point and failed, and the price finished near the top of its range.
Reading Bodies and Wicks
Before you learn any named pattern, learn to read the proportions of a single candle. The size of the body tells you how decisive the period was. A long body means one side dominated from open to close. A small body means the price ended close to where it started, which points to hesitation or balance between buyers and sellers.
The wicks tell you where the price was rejected. A long upper wick shows that the market tried to go higher, but sellers pushed it back down before the close. A long lower wick shows the opposite: sellers drove the price down, then buyers stepped in and lifted it again. A candle with almost no wicks, sometimes called a marubozu, shows strong one-way pressure for the whole period.
- Long body, short wicks: strong conviction in the direction of the candle.
- Small body, long wicks on both sides: a tug of war with no clear winner.
- Long upper wick: rejection of higher prices.
- Long lower wick: rejection of lower prices.
Comparing a candle with its neighbors matters too. A body three times larger than the average of the last ten candles says much more than a body of ordinary size.
Three Patterns Every Beginner Should Know
The Doji
A doji forms when the open and the close are equal or very close, so the body looks like a thin line or a cross. It reflects indecision. A dragonfly doji has a long lower wick and little or no upper wick, a gravestone doji has a long upper wick and little or no lower wick, and a long-legged doji has long wicks on both sides. A doji on its own is not a reason to buy or sell. It becomes interesting when it appears after a strong move, because it suggests that the side in control has lost momentum, at least for now.
The Hammer
A hammer has a small body near the top of the candle, a lower wick at least twice as long as the body, and little or no upper wick. It matters most after a decline. Imagine a stock that has fallen for several days. The next day it opens at 100, drops to 94, then recovers and closes at 100.80. The body is only 0.80 long, while the lower wick is 6 points long. Sellers pushed hard, but buyers absorbed the selling and closed the day near its high. The same shape appearing after a rise is called a hanging man and is read as a possible warning of weakness. Its upside-down cousin, with a small body near the bottom and a long upper wick after a rise, is known as a shooting star.
The Engulfing Pattern
An engulfing pattern uses two candles. In a bullish engulfing, a small bearish candle is followed by a larger bullish candle whose body completely covers the body of the previous one. For example, day one opens at 50.00 and closes at 49.40; day two opens at 49.30 and closes at 50.40. The second body covers the first from end to end. A bearish engulfing is the mirror image and tends to carry more weight after an uptrend. The larger the second candle compared with the first, the clearer the shift in control it suggests.
Why Context Matters More Than the Shape
The same candle can mean very different things depending on where it appears. A hammer in the middle of a choppy, sideways range tells you little. A hammer that forms right at a well-tested support level, after a clear decline, deserves much more attention. Before acting on any pattern, ask a few questions:
- Where is it? Patterns at support, resistance or round numbers carry more weight than patterns in the middle of nowhere.
- What came before it? Reversal patterns need something to reverse. A bullish engulfing after a long fall means more than one that follows two small red candles.
- Which timeframe? A pattern on the daily chart reflects a full day of trading and is usually more reliable than the same pattern on a one-minute chart, where noise is high.
- Is there confirmation? Many traders wait for the next candle to close in the expected direction before treating a pattern as valid.
- What else is happening? A scheduled news release can produce dramatic candles that say more about the event than about the market’s underlying direction.
Think of candlesticks as one piece of evidence, not the whole case. Combined with the trend, key levels and sensible risk control, a shape on a chart becomes part of a structured decision.
Common Mistakes When Reading Candles
- Trading every pattern you see. Charts are full of dojis and small engulfing candles, and most of them lead nowhere. Being selective is a skill in itself.
- Acting before the candle closes. A candle that looks like a hammer with ten minutes left can turn into something else entirely by the close. Judge completed candles only.
- Ignoring the bigger trend. One bullish candle rarely reverses a strong downtrend on a higher timeframe. Check the larger picture first.
- Forgetting the stop loss. Even a textbook pattern fails regularly. A common approach is to place the stop beyond the pattern’s extreme, for example below the low of a hammer, and to size the position so that a loss stays within your risk limit.
- Memorizing names instead of understanding. Understanding what bodies and wicks say about buyers and sellers matters more than memorizing dozens of exotic patterns.
Key Takeaways
- Each candle shows four prices: open, high, low and close.
- The body shows how decisive the period was; the wicks show where prices were rejected.
- The doji signals indecision, the hammer signals rejection of lower prices, and the engulfing pattern signals a shift in control.
- Location, prior trend, timeframe and confirmation matter more than the pattern’s name.
- No pattern works every time, so define your risk before you enter.
Candlestick patterns are a tool for reading market behavior, not a guarantee of what comes next. Trading leveraged products such as forex and CFDs carries a high level of risk and can lead to losses, so practice on a demo account first and never risk money you cannot afford to lose.
