How to Read Candlestick Charts: OHLC, Wicks and Price Action

A candlestick chart shows the opening, highest, lowest and closing prices for each period on a financial market chart. The thick body connects the open and close, while the thin wicks mark the price extremes. Reading these four values correctly helps traders describe volatility, momentum and price rejection, but no candle can predict the next price movement by itself.

Whether you are learning Forex, shares, commodities or index futures, start with the information the candle actually contains. Interpretation comes later, once you understand the market, timeframe, transaction costs and surrounding price structure.

What does a candlestick show?

Each completed candlestick describes four prices, commonly abbreviated OHLC: open, high, low and close. The open is the first price in the chosen interval, the high is the maximum, the low is the minimum and the close is the final price. A daily stock candle summarises a trading session; an hourly currency candle summarises one hour according to the data provider’s clock and feed.

The real body is the distance between open and close. The upper wick spans from the body’s upper edge to the high; the lower wick spans from its lower edge to the low. Some chart providers use hollow versus filled bodies, others green versus red. Colour settings are conventions, not economic facts.

How do bullish and bearish candles differ?

A bullish or rising candle closes above its open. Its body begins at the open and ends higher at the close. A bearish or falling candle closes below its open, so its body extends downwards. A candle with equal open and close has no meaningful real body and is often called a doji. Its appearance does not establish that the next move must reverse.

Beware the difference between close versus open and close versus the previous close. A stock can open sharply above the previous day’s close, then fall modestly during the session. That produces a bearish body even though the stock may still finish higher than yesterday. Chart colours on some platforms can follow different rules; check the legend.

Worked example: read one EUR/USD candle

Consider a fictional one-hour EUR/USD candle with open 1.0820, high 1.0860, low 1.0805 and close 1.0845. Because 1.0845 exceeds 1.0820, the candle is rising. For most major non-JPY currency pairs, one pip is 0.0001 of the quote price.

The candle shows that price traded through a 55-pip range but closed only 25 pips above its opening price. It does not reveal the precise intrahour order in which the high and low occurred. Without lower-timeframe data, it would be wrong to assume a stop order or target was reached first merely because both prices fall within that hourly range.

What do long upper and lower wicks mean?

A long upper wick means price traded above the final body level before finishing lower than its high. It is sometimes described as rejection of higher prices, but several mechanisms could be involved: profit-taking, a short-lived news response, thin liquidity or ordinary two-way trading. A long lower wick indicates that trading occurred beneath the body before price moved up from the low. Neither pattern reveals buyers’ or sellers’ identities or intentions.

Compare wick size with the recent normal trading range. A 20-pip wick may be unusual on a quiet major currency pair during a calm hour but insignificant around a major central-bank announcement. The same candle shape can have different implications across instruments, timeframes and volatility regimes.

What can a candle body tell you about momentum?

A relatively large body indicates a large net movement from the first to last price of the period. A small body indicates little net change between those endpoints, even when intraperiod trading was volatile. Candles closing near their highs can be consistent with sustained buying pressure during that interval; closing near their lows can be consistent with sustained selling. These are descriptions, not reliable forecasts on their own.

For better context, compare several completed candles rather than judging one shape. Consecutive higher closes may illustrate a trending segment; overlapping bodies and wicks may suggest consolidation. The same pattern can arise within a broader downtrend, uptrend or sideways range, which changes the questions an analyst should ask.

Timeframes, sessions and incomplete candles

A five-minute candle describes different information from a daily candle. A daily stock candle may include an opening auction, whereas continuous currency markets do not have a single global daily opening print. Different broker feeds and daily candle cut-offs can produce slightly different candlestick patterns for the same pair.

A candle that is still forming can change substantially before it closes. A long upper wick halfway through the period may disappear if price returns to its high. For any rule based on a completed candle, wait for that period’s close before assessing whether the condition occurred. This also matters when testing strategies on historical data: signals known only at the close cannot automatically be executed at that same completed close.

Why a candlestick is not a complete trading signal

A candle does not identify fair value, economic catalysts, market positioning, or the probability that price will rise or fall next. A hammer-shaped candle after a decline may coincide with an attempted rebound, but its predictive usefulness is unproven unless a clearly specified rule is tested over appropriate data with trading costs and failed examples included.

To avoid overinterpretation, consider the broader trend, nearby traded price areas, scheduled economic events, liquidity and position risk. See Market Liquidity Explained for why executable prices can differ from the midpoint or a chart’s last trade. For a framework that combines different kinds of evidence, explore How to Analyse Global Financial Markets.

Common candlestick reading errors

• Confusing a candle with a forecast: a visual shape is descriptive until independently validated.
• Ignoring the previous close: a red body does not necessarily mean a negative daily return.
• Using unfinished candles: intraperiod patterns can change before completion.
• Forgetting execution prices: spreads, gaps and order-book depth affect actual fills.
• Assuming all sessions are equivalent: exchange opening auctions and quieter trading hours change the meaning of price ranges.
• Ignoring sample size: a handful of impressive examples provides little evidence of predictive reliability.

How to practise reading candlesticks

Choose one market and one timeframe. For each completed candle, record open, high, low and close. Calculate the body and full range, then check whether its close exceeded its open and how far it finished from its extremes. Compare this with the previous session’s close and the surrounding price action. Where appropriate, annotate major scheduled events and changes in volatility.

After developing fluency with individual candles, progress to chart structure and the interaction between volatility, trend and liquidity. Read the Technical Analysis Glossary, then examine how chart observations fit into Trading Strategies Explained. A structured technical-analysis course can provide a broader learning pathway, but it does not guarantee profitable trading.

Frequently asked questions

What does OHLC stand for?

Open, high, low and close: the first, highest, lowest and final recorded prices during a specified chart interval.

Are green candles always bullish?

Usually a green body marks a close above that candle’s open, but colours are platform settings. A green candle does not prove that future prices will rise.

Can a candlestick reveal the order of price moves?

No. A completed OHLC candle provides four price statistics but generally cannot tell you whether its high occurred before its low.

Do candlesticks work in Forex and stock markets?

Both use open-high-low-close charting, although trading sessions, auction mechanisms and data-provider conventions differ.

Do candlestick patterns predict reversals?

Not reliably on the strength of their names or shapes alone. Any predictive claim needs carefully specified rules and independent, cost-aware testing.

References and further reading

CME Group — Chart Types: Candlestick, Line and Bar explains OHLC chart structure and common visual interpretations. CME Group — Technical Analysis discusses the limitations of chart interpretation.

Further learning: Traders MBA Technical Analysis Masterclass provides a dedicated programme for studying technical market analysis.