Red Candle, Green Candle: What a Candlestick Actually Tells You, and the Three Patterns Beginners Learn First

Open any trading app, for gold, the Nasdaq or a Bursa stock, and you see rows of small red and green bars with thin lines sticking out of each end. These are candlesticks. Nearly every beginner learns them first, along with patterns with dramatic names, the hammer, the engulfing, the doji, that supposedly say where price goes next.

Here is the puzzle. Each candle is just four prices: the open, the high, the low and the close. How can four numbers say anything about the future? And if the hammer really worked, why do so many people who can spot one still lose money?

This weekend, with the charts standing still until gold and forex reopen around 6 am on Monday Malaysian time, is a good time to answer properly.

📌 Key points

• A candle packs four prices into one shape: the body spans the open and the close, and the wicks show how far price went beyond them.
• Green (or hollow) means price closed higher than it opened; red (or filled) means it closed lower. Mainland China reverses the colours.
• One candle can cover one minute or one month, and each timeframe tells a different story.
• The three patterns beginners learn first, the engulfing, the hammer (or pin bar) and the doji, describe a shift between buyers and sellers, not a promise.
• The evidence is mixed: in Thomas Bulkowski’s tests on US stocks the hammer reversed 60% of the time and the dragonfly doji 50%, and one academic study found no signal that beat the market.

What one candle records, and over how long

Think of a candle as a receipt for one slice of time. Take a made-up one-hour gold (XAUUSD) candle, using round numbers for illustration: it opens at US$4,000, rises to US$4,012, falls to US$3,991 and closes at US$4,008.

• The body runs from the open (US$4,000) to the close (US$4,008). The close is higher, so it is drawn green, or hollow; a close below the open would be red, or filled.
• The upper wick, or shadow, runs up to the high of US$4,012: ground buyers reached but could not keep.
• The lower wick runs down to the low of US$3,991: ground sellers reached but could not keep.

So a candle tells you who won the period, how far each side pushed, and how decisive it was: a big body is a clear win, a tiny body between long wicks a stalemate. It cannot tell you the order things happened in, how much was traded, or why.

The method is usually traced to 18th-century rice traders at Osaka’s Dojima exchange and a merchant named Munehisa Homma, though Steve Nison, whose 1991 book brought candlesticks to the West, has said the charts themselves probably came after 1850. One warning: mainland Chinese screens show red for up and green for down, the reverse of most platforms, so check the settings when you switch apps.

Each candle covers the period you choose: one minute (M1), five minutes (M5), an hour (H1), four hours (H4), a day (D1), a week or a month. The same shape means different things at different scales: on a five-minute chart it records one five-minute tussle, on a daily chart a whole day of buying and selling. That is why we suggest beginners learn on the one-hour, four-hour and daily charts before going lower.

Charts also draw candles only while a market is open. A weekend or holiday leaves no candle at all, and the next one may open away from the last close, a jump traders call a gap.

Pattern one: the engulfing candle

A bullish engulfing takes two candles and comes after a fall: a red candle, then a bigger green one that opens at or below the red candle’s close and closes above its open, so the green body swallows the red body. A bearish engulfing is the mirror image after a rise. Only the bodies count, not the wicks. The story: in one period, the side that had been winning lost all of the previous period’s ground, and more.

Thomas Bulkowski, an American researcher who tested 103 candlestick patterns on US stock data, found the bullish engulfing acted as a bullish reversal 63% of the time and the bearish engulfing as a bearish reversal 79% of the time. Yet on his overall performance ranking, which looks at what price does over the following days, they come only 84th and 91st of 103. The engulfing often points the right way, and often does not go far.

Pattern two: the hammer and the pin bar

A hammer is one candle with a small body near the top of its range, a lower wick at least twice the length of the body and little or no upper wick, appearing after a fall. Forex traders often call the same shape a pin bar; the upside-down version after a rise is a shooting star. The story is in the wick: sellers pushed price well below the open, and buyers pushed it nearly all the way back. That is why traders who act on a hammer usually place their stop-loss, the order that closes a losing trade automatically, just beyond the wick’s tip: if price returns through that rejected ground, the story was wrong.

Bulkowski found the hammer acted as a bullish reversal 60% of the time and the shooting star as a bearish reversal 59% of the time. Better than a coin toss, but four times in ten the market kept going the original way.

Pattern three: the doji

A doji’s open and close are almost the same, so its body shrinks to a thin line. A long lower wick makes it a dragonfly doji; a long upper wick, a gravestone doji. The story is indecision: both sides tried and neither won. After a long run that can hint the move is tiring; in a sideways market it means little. Bulkowski found the dragonfly doji acted as a reversal 50% of the time, ranked it 98th of 103, and called it “neither a reversal nor a continuation candle”. Treat a doji as a reason to wait for the next candle, not a reason to trade.

Pattern	What it looks like	Bulkowski’s tested result	Overall rank (of 103)
Bullish engulfing	Green body covers prior red body, after a fall	Bullish reversal 63% of the time	84
Bearish engulfing	Red body covers prior green body, after a rise	Bearish reversal 79%	91
Hammer (pin bar)	Small top body, long lower wick, after a fall	Bullish reversal 60%	65
Shooting star	Small bottom body, long upper wick, after a rise	Bearish reversal 59%	55
Dragonfly doji	Open equals close, long lower wick	Reversal 50%, a coin toss	98

What the research actually says

Bulkowski’s figures come from US stocks on daily charts; gold, forex and index CFDs on short timeframes behave differently. Academic studies are harsher. Ben Marshall, Martin Young and Lawrence Rose of New Zealand’s Massey University tested 28 candlestick signals on Dow Jones stocks from 1992 to 2002 and found “no evidence that any candlestick signals predict stock price movements”. A 2016 study by Tsung-Hsun Lu and Yung-Ming Shiu, covering the same stocks from 1974 to 2009, was kinder: “several of the patterns may well prove to be profitable”. Defenders such as the analyst Greg Morris argue these tests ignore the trend before the pattern.

The fair reading: a pattern alone is weak evidence, useful as one clue alongside where it appears (at support or resistance, or after a long run), the timeframe and what the next candle does. And no pattern changes the bigger fact that Europe’s securities regulator, ESMA, found in 2018 that 74% to 89% of retail accounts trading CFDs, the leveraged contracts most Malaysians use for gold and US indices, lose money.

What it means for a Malaysian trader

• Gold (XAUUSD). Many brokers close the day at 5 pm New York time, which since US clocks went back on 1 November is 6 am in Malaysia, so your daily gold candle runs from 6 am to 6 am. Monday’s first candle may gap away from Friday’s close; a gap is not a pattern.
• US indices (NAS100, US30, SPX500). The US stock market now opens at 10:30 pm Malaysian time, and the candles right after the open are often among the day’s largest. A five-minute hammer at 10:35 pm is not a daily hammer, so pick your timeframe before you look.
• KLCI and Bursa shares. The KLCI closed on Friday at 1,616.58. Bursa is shut on Monday for Deepavali, so there will be no Monday candle.
• Test before you trust. Choose one pattern, one market and one timeframe. Log 30 to 50 examples from a demo account or chart replay in a trading journal (the journal we use with students is Modus Control): where each appeared and what happened next. Your own record will teach you more than any percentage here.

FAQ

What do red and green candles mean in trading?

A green candle means price closed higher than it opened during that period; a red candle means it closed lower. The thin lines are wicks, marking the highest and lowest prices reached. On mainland Chinese platforms the colours are reversed.

Which candlestick pattern is the most reliable?

None is reliable on its own. Of the beginner patterns, the bearish engulfing reversed most often in Thomas Bulkowski’s tests on US stocks, 79% of the time, yet ranks only 91st of 103 overall. Academic studies of Dow Jones stocks found little or no evidence that candlestick signals beat the market.

What is the difference between a hammer and a pin bar?

Both describe a small body and one long wick, showing price was pushed away from a level. “Hammer” is the classic name for the bullish version after a fall; “pin bar” is what forex traders call a long-tailed candle in either direction.

Can I trade using candlestick patterns alone?

You can, but the evidence suggests patterns alone are a weak edge at best. Use them inside a plan that covers location, timeframe, position size and a stop-loss, and test them on your own market first.

Summary

A candlestick is a receipt for one slice of time, showing who won between the open and the close and where each side was turned back. The engulfing, the hammer and the doji each describe a real shift in that tug-of-war, but the evidence that they predict the next move ranges from modest to none. Treat them as clues that need context, test them on your own market, and never let a pattern replace position size and a stop-loss.

Disclaimer

This article is for education only and is not investment advice. Pattern statistics come from the research cited and do not predict future results. Market details are as of 3 pm Malaysian time on Sunday 8 November 2026, with markets closed for the weekend. Trading leveraged products carries a high risk of loss.

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• Not sure what your trading style is? Your journal already knows
• Complicated strategy or stable mindset: which matters more?
• How to start trading in Malaysia as a beginner