Candlesticks

A candlestick is a compressed summary of everything that happened during one unit of time on one instrument. If you are looking at a 1-hour chart, each candle tells you the opening price for that hour, the closing price at the end of the hour, and the highest and lowest prices traded at any point in between. That is all it is: four numbers, plotted in a shape that is easy to scan quickly. It is not a signal, not a prediction, and not a pattern with magical properties. It is a data point, and like any data point it is more useful in the context of the data points around it than on its own.

The body of the candle is the distance between the open and the close. If the close is above the open, the body is usually shown in one colour (commonly green or white) and the candle is called bullish for that period, meaning price finished higher than it started. If the close is below the open, the body is shown in another colour (commonly red or black) and the candle is bearish for that period. The wicks, sometimes called shadows or tails, are the thin lines above and below the body that show the highest and lowest prices reached before the market pulled back to where it closed.

The size of the body tells you about conviction. A long body means price travelled a large distance in one direction during that period with relatively little pullback — that is a period where one side, buyers or sellers, was clearly in control. A small body, sometimes called a doji when the open and close are almost identical, tells you the opposite: the period ended roughly where it started, which usually means neither side could take firm control, even if there was a lot of movement in between (which you would see reflected in long wicks).

It helps to think of every candle as a miniature battle report. Long wick to the upside with a small body near the low of the candle means buyers pushed price up during the period, but sellers overwhelmed them and dragged the close back down — sellers won that particular battle even though buyers had the early initiative. The reverse shape, a long lower wick with the close near the high, tells you sellers pushed price down and buyers absorbed that selling and drove price back up. Learning to read this contest, rather than memorising the name of a shape, is the actual skill.

Traders have named a long list of recurring candle shapes and short sequences of candles: doji, hammer, shooting star, engulfing patterns, harami, morning star, evening star, and dozens more. These names exist because certain shapes recur often enough that people started cataloguing them a long time ago (many of the names come from 18th-century Japanese rice trading). The existence of a name does not mean the pattern reliably predicts anything. It means the shape is common enough, and visually distinct enough, to be worth a label.

A bullish engulfing pattern is a two-candle sequence where a bearish candle is immediately followed by a bullish candle whose body completely covers, or 'engulfs', the body of the candle before it. The story it tells is straightforward: sellers were in control, then in the very next period buyers overwhelmed them so completely that they erased the entire previous move and then some. A bearish engulfing pattern is the mirror image. A hammer is a single candle with a small body near the top of its range and a long lower wick, usually appearing after a decline, suggesting sellers pushed price down hard and buyers stepped in and reversed it within the same period. A shooting star is the same shape appearing after an advance, with the opposite implication.

The mistake almost every new trader makes is to treat these patterns as standalone trade signals: 'I saw a hammer, therefore I buy.' Backtesting individual candlestick patterns on their own, across large samples of price history, consistently shows they carry only a small statistical edge, and that edge frequently disappears or reverses depending on the instrument, the timeframe and the broader market regime. A hammer that forms in the middle of an established uptrend, at a level with no prior significance, is close to noise. The same hammer forming exactly at a level where price has reversed multiple times before, after a large decline, with rising volume, is a genuinely different piece of evidence — not because the candle shape changed, but because the context changed.

The three things that turn a candlestick pattern from decoration into useful evidence are location, trend context and confirmation. Location means where the pattern appears relative to support, resistance, or a level that other market participants are also likely to be watching. A reversal pattern at a random midpoint of a range means far less than the same pattern at the exact level that has produced three previous reversals. Trend context means understanding whether the pattern is a continuation signal in the direction of the dominant trend or a reversal signal against it — reversal patterns against a strong trend fail far more often than continuation patterns with it.

Confirmation means waiting for the next candle, or the next few candles, to validate the story the pattern is telling before acting. A bullish engulfing candle that is immediately followed by a candle that trades back below its midpoint has effectively failed, regardless of how textbook it looked. Waiting one extra candle for confirmation costs you some entry price, but it filters out a large share of patterns that were never going to work, because the market itself is telling you the initial interpretation was wrong.

Volume, where it is available and reliable for your instrument, adds a further layer of context. A reversal pattern accompanied by a visible increase in participation is more credible than the identical shape formed on unusually thin trading, where a handful of orders can produce a dramatic-looking wick that means very little. None of this turns candlestick reading into a precise science. It remains a probabilistic tool: it shifts the odds a little, in combination with everything else you know about the chart, and it should never be the sole reason for a trade.

In practice, experienced chart readers rarely fixate on a single named pattern. They read a sequence of five to fifteen candles as a continuous story: where did momentum build, where did it stall, where did control change hands, and how convincingly. A series of small-bodied candles with overlapping ranges tells you the market is indecisive and probably consolidating. A series of large-bodied candles all closing near their highs, one after another, tells you a strong directional move is underway and pullbacks within it are likely to be shallow.

This sequence reading matters more than any individual named shape because markets are continuous processes, not a string of independent coin flips. The candle that comes after a pattern is shaped by the same order flow, the same participants and the same information that shaped the candles before it. Reading candles in isolation throws away most of that context. Reading them as a flow — building conviction, losing conviction, transferring control — is a much closer approximation of what is actually happening.

The same instrument, at the same moment, looks completely different depending on which timeframe you view it on. A single 4-hour candle with a long upper wick might be made up of, when you drop down to the 15-minute chart, a clean, orderly rally followed by an equally orderly, news-driven reversal. The 4-hour candle compresses that entire story into one shape and discards the detail. Neither view is 'more correct' — they answer different questions. The higher timeframe candle tells you the net outcome over four hours; the lower timeframe tells you the path that produced it.

This matters practically because a pattern that looks decisive on a low timeframe can be almost meaningless noise on a higher timeframe, and vice versa. New traders often over-read patterns on very short timeframes (1-minute, 5-minute charts) where the sample of participants during any given candle is small and prone to being dominated by a handful of orders. The same pattern on a daily or weekly chart reflects the aggregated decisions of a vastly larger and more diverse set of participants, and tends to be more reliable evidence, even though it is rarer and slower to form.