The Bull Flag: Reading an Orderly Pause After a Strong Move
What makes a flag a flag, why pause quality matters more than the drawing, and how traders define the break.
A bull flag describes a strong advance — the pole — followed by a shallow, orderly pullback that gives back only part of the move. It is a continuation description: the pause did not undo the advance.
Flag quality lives in the pause, not the trendlines drawn around it.
Pole and pause
The pole should be a decisive move with few deep pullbacks. The flag is the consolidation that follows: shallow depth, contained range, and a duration short relative to the pole.
A pullback that retraces most of the pole is not a flag. It is a failed advance, and treating it as a flag is a common and expensive mislabel.
- Shallow retracement relative to the pole
- Orderly, contained range with small candles
- Short duration relative to the pole
- No close back below the pole's origin
Defining the trigger
The usual trigger is a close above the flag's upper boundary. Because flags are small, the difference between a wick trigger and a close trigger changes results substantially — pick one and test it.
Invalidation typically sits below the flag low, which keeps risk proportional to the size of the pause rather than the size of the pole.
Measurement
The conventional projection adds the pole length to the breakout point. In practice, structural resistance above often arrives first, and many traders take the nearer of the two as the planning target.
Bear flags and context
The bear flag mirrors the description: a decisive decline followed by a shallow, orderly drift upward. The same quality checks apply.
Context still rules. A flag forming directly beneath a significant higher-timeframe level is a different proposition from one forming in open space.