Continuation pattern · bullish bias
Bull Flag pattern
A bull flag forms when a sharp rally (the pole) is followed by a short, controlled pullback in a small downward-sloping channel (the flag). It suggests the market is pausing rather than reversing.
How to identify a bull flag
- A strong, near-vertical move up: the pole.
- A pullback that drifts lower or sideways in a tight channel.
- The pullback retraces only part of the pole, typically well under half.
- Candles in the flag are usually smaller than those in the pole.
What confirms it
A close above the flag's upper line.
What invalidates it
A close below the flag's lower line, or a retracement that eats most of the pole.
How traders project a target
Measure the pole's height and add it to the breakout point.
Common mistakes
- Calling any pullback a flag even when there was no sharp pole before it.
- Accepting a flag that retraces most of the pole; that is a reversal risk, not a pause.
- Ignoring that flags take time: a flag that keeps extending is losing its meaning.
Where it appears
One of the most common continuation patterns in trending markets on all timeframes.
Frequently asked questions
How long should a bull flag last?
It should be short relative to the pole. A flag that drags on for far longer than the pole took to form is usually less reliable.
What is the difference between a bull flag and a pennant?
A flag consolidates in a small channel with parallel lines. A pennant consolidates in a small converging triangle.
How far can a bull flag pull back?
Shallow is better. When the pullback approaches half or more of the pole, many traders stop treating it as a flag.
Related chart patterns
Educational content only, not financial advice. Chart patterns describe probabilities, not certainties, and every pattern can fail. See our disclaimer.