What is a doji in trading?

How to recognize a doji

The key is the body: in a doji, the open and close are so close that the body looks like a horizontal line. The shadows can be short or long. There is no universal rule for how small the body must be; in practice, a candle counts as a doji when its body is very small compared with its total range.

The best-known variants are:

• Long-legged doji: long shadows on both sides. There was a lot of movement and, in the end, nobody won.
• Dragonfly doji: a long lower shadow and almost nothing above; the open and close are near the high. Sellers pushed down and buyers brought the price back.
• Gravestone doji: the opposite: a long upper shadow and a close near the low. Buyers tried to push higher and were rejected.

An example with numbers

An example stock opens at $42.15, rises to $43.00, drops to $41.30, and closes at $42.17. The body is just $0.02, while the day’s range (high minus low) is $1.70. It’s a long-legged doji: price moved across a $1.70 range and ended almost where it started.

If this doji appears after five days of gains with long-bodied green candles, the reading is that buyers could no longer set the pace. That’s a warning, not a sell signal.

How it’s used in practice

A doji gains value from its context:

• After a strong trend: it warns that momentum is fading. Many traders wait for the next candle: if it closes against the trend, the warning is confirmed.
• At an important level: a doji right at resistance or support shows the market is hesitating at that price.
• In a sideways range: it adds almost no information, because indecision is already the norm.

It’s also part of three-candle patterns such as the morning star and the evening star, where the middle candle is often a doji or a small-bodied candle.

How to plan around a doji

Since a doji has no direction, its extremes become useful reference points. Going back to the example, from $41.30 to $43.00:

• A later close above $43.00 indicates the indecision was resolved to the upside.
• A close below $41.30 indicates it was resolved to the downside.
• As long as price stays within that range, the doubt continues.

Some traders wait for that resolution before doing anything and use the opposite end of the doji as a reference for their stop loss. What matters is deciding beforehand which scenario you expect and what would change your mind.

The limitation to remember

A doji describes a tie, and a tie can be broken either way. Treating it as an automatic reversal signal is the most common mistake: in strong trends, dojis appear that only mark a pause before the move continues. That’s why it’s combined with confirmation from the next candle, with the level where it appears, and with a trading plan that defines in advance what you would do in each case.