🕯️ Candlestick charts: anatomy, key patterns and what the evidence says

🎯 In 30 seconds: A candlestick shows one period's open, high, low and close. The thick body runs from open to close; the thin wicks reach out to the high and low. Green means the close was above the open; red means it was below. Named patterns such as the hammer or the engulfing candle are short descriptions of a tug of war between buyers and sellers. They only mean something in the right place on the chart, and they work better as a reason to look closer than as a reason to trade. Academic tests of candlestick patterns disagree with each other, and much of the work uses foreign data, so treat them as ideas to test on Indian shares, not rules to follow.

Where candlesticks come from

Candlestick charts were developed by rice traders in Japan in the 1700s. Western traders picked them up much later, and today they are the default chart in almost every Indian broker's app.

They show exactly the same four numbers as an OHLC bar chart (see Chart basics). The difference is visual. The body makes the open-to-close move jump out, so you can read the mood of a day at a glance, the way you can tell from a cricket scorecard whether an innings was a steady build or a late collapse without reading every ball.

Anatomy of a candle

• Body: the box between open and close. Its height is the net move for the period.
• Upper wick (upper shadow): the line from the top of the body to the high.
• Lower wick (lower shadow): the line from the bottom of the body to the low.
• Colour: green or hollow when the close is above the open, red or filled when below. Apps vary, and some colour candles against the previous close instead of the open. Check your settings once.
• Range: high minus low, the total distance travelled.

Two Indian details change how daily candles look. The open comes from the pre-open auction that finishes before 9:15 a.m., so overnight news shows up as a gap between candles. And the close is the exchange's official closing price, which for most shares is a volume-weighted average of the last half hour rather than the final trade. A late spike in the last two minutes can show as a wick without moving the close much.

A candle is not finished until its period ends. A daily candle that looks like a strong green bar at 1:30 p.m. can be a long red one by 3:30 p.m.

Reading a single candle

Each part of a candle tells a small story about the period.

• Long body, small wicks: one side was in control from start to finish. A long green body means buyers pushed all session.
• Long upper wick: buyers pushed the price up, and sellers drove it back down before the close. The high was rejected.
• Long lower wick: sellers pushed the price down, and buyers took it back up. The low was rejected.
• Small body with wicks on both sides: neither side won. That is indecision.

To make this precise instead of a feeling, measure it. Using the green candle above (open ₹400, high ₹480, low ₹380, close ₹460):

A close in the top fifth of the range means buyers held control into the end. Numbers like these are also how you would turn a pattern into a screener rule or a backtest.

The patterns traders talk about

Doji. The open and close are equal or almost equal, so the body is a thin line. It shows indecision. A doji after a long run can mean the run is losing energy. A doji in the middle of a sideways, choppy stretch means very little.

Hammer. A small body near the top of the range, a lower wick at least twice the height of the body, and little or no upper wick. It matters after a fall: sellers pushed hard during the day, then buyers took the price back up. The same shape after a rise is called a hanging man and is read as a warning.

Shooting star. The hammer turned upside down: small body near the bottom, long upper wick, little or no lower wick, appearing after a rise. Buyers pushed up and failed to hold it. The same shape after a fall is called an inverted hammer.

Engulfing. Two candles. In a bullish engulfing, a red candle is followed by a green candle whose body completely covers the red body. Buyers overwhelmed sellers. A bearish engulfing is the mirror image after a rise. In India, where many shares open with a gap after results or global news, engulfing candles often start with a gap, which makes the second body larger than it would be in a market that trades overnight.

Morning star and evening star. Three candles. A morning star, after a fall: a long red candle, then a small-bodied candle that opens lower (the "star"), then a long green candle that closes well into the first candle's body, often past its midpoint. An evening star is the mirror image after a rise.

There are dozens more named patterns. These five cover the main ideas: indecision, rejection of a price, and one side overpowering the other. The Technical Analysis Guide's chapters on single candles and multi-candle patterns cover more of them with exact definitions.

Context and confirmation

A pattern describes one to three periods. Whether it means anything depends on where it appears.

• Trend before it. A hammer only makes sense after a fall. A reversal pattern needs something to reverse. See the guide's chapter on trends.
• Location. A hammer at a level where the price turned before carries more weight than one in empty space. See support and resistance.
• Volume and delivery. A reversal candle on heavy volume, ideally with a high delivery percentage, shows more people actually took positions. See Volume and delivery percentage.
• Confirmation. Many traders wait for the next candle to agree, for example a close above the hammer's high.
• The news behind it. A long candle on results day is a reaction to new information, not a pattern in the usual sense. See Results season.

Waiting for confirmation has a cost: you get in at a worse price. In this example the hammer closed at ₹502 and the confirming day closed at ₹521. The trade-off is fewer false signals in exchange for a later, more expensive entry.

A worked example: turning a pattern into a plan

Suppose you have a trading account of ₹2,00,000 and a rule that you never risk more than 1% of it, ₹2,000, on one trade (the reasoning is in Position sizing). You see the Desai Cements hammer and want to plan a delivery trade.

The idea: a hammer after a six-day fall, near a level where the share bounced a few months ago. If the low of the hammer breaks, the idea is wrong. A sensible stop is just below that low, at ₹475. The first obvious target is the start of the fall, around ₹560.

The confirmation made the signal more convincing and the trade worse. At ₹521, the stop is ₹46 away and the target only ₹39 away. A trader who insists on confirmation either needs a wider target, a tighter stop (with more chance of being stopped by noise), or to skip this one. That decision belongs in your trading plan before you see the next hammer, not after.

Two more Indian costs to put in the plan. First, every delivery trade pays brokerage, STT, exchange charges, stamp duty, GST and a DP charge when you sell; on a small position these can take a noticeable bite out of a ₹39 target. See What trading really costs in India. Second, the stop can be jumped. If Desai Cements reports poor results after market hours and opens next morning at ₹455, a stop at ₹475 fills near ₹455, not ₹475. Your real loss would be about ₹47 a share on the first plan, not ₹27.

Candles on intraday charts

The same shapes appear on 5-minute and 15-minute charts, and intraday traders in India use them heavily. Three cautions apply.

• The first candle is special. The 9:15 a.m. candle absorbs the reaction to everything since yesterday's close, and its range is often the largest of the morning. Patterns built on it behave differently from patterns later in the day.
• Short candles are noisy. A 1-minute hammer can be made by one large order. The shorter the time frame, the more patterns you will see and the less each one means.
• Costs pile up. Intraday trading pays charges on every round trip, and more patterns means more trades. SEBI has published studies of how individual traders actually fared; see Investing vs trading and Intraday trading.

What the evidence says

Candlestick patterns have been tested by academic researchers, and the results disagree.

• Caginalp and Laurent (1998) tested three-day candlestick patterns on daily prices of S&P 500 shares in the US from 1992 to 1996. They reported strong out-of-sample statistical significance and a profit of almost 1% over a two-day holding period.
• Ben Marshall's PhD thesis at Massey University, published with Martin Young and Lawrence Rose in 2006, tested candlestick strategies on shares in the Dow Jones Industrial Average from 1992 to 2002, using a bootstrap method that generates random open, high, low and close prices. The thesis concludes that candlestick technical analysis "does not have value" and finds no evidence that a trader following it would beat the market.

Two studies on overlapping periods reaching opposite conclusions is a common story in technical analysis. Results depend on the market, the period, exact pattern definitions and whether trading costs are included. Patterns that once worked can also fade once many people trade them. Both studies use US shares; results from one market do not automatically carry over to another, and Indian costs (STT on every delivery sale, for instance) are different.

The practical takeaway: candlestick patterns alone are not a proven edge. They may help you time entries and place stops inside a broader plan. If you want to rely on one, test it on Indian data first, with costs included. The guide's chapters Does technical analysis work? and Testing ideas explain how to do that honestly.

Try it

Open a daily candlestick chart of any Nifty 50 company for the last year in your broker's app or on the NSE website. In a notebook, list every hammer and shooting star you can find, using the written rule above (lower or upper wick at least twice the body, close in the correct third of the range, after at least five moves the other way). For each one, write down the close on the day of the pattern and the close five trading days later. When you have 15 or more, count how many went the way the pattern "predicted". Then do the same for a small-cap share and compare. Keep the notebook; you will use the same method in Paper trading.

Sources

• IDEAS/RePEc: Caginalp and Laurent (1998), The predictive power of price patterns, Applied Mathematical Finance
• IDEAS/RePEc: Marshall, Young and Rose (2006), Candlestick technical trading strategies: Can they create value for investors?, Journal of Banking and Finance
• Massey University: Marshall, Candlestick technical trading strategies (PhD thesis, abstract)
• NSE: Market timings (pre-open and normal market)
• SEBI Annual Report 2025-26, Chapter 4: Secondary markets (closing price methods)
• NSE: Price bands