Bull flag and bear flag patterns
A flag is a short, tidy pause after a sharp move. The stock rockets (or drops) in a few days, then drifts sideways in a tight band while volume fades, and traders watch to see whether the original move continues.
What it looks like
The shape has two parts. The pole is the sharp move, usually 12% or more in under two weeks. The flag is the pause that follows: a small, slightly sloping range that lasts about a week to a month. A bull flag follows a rally and tilts sideways or slightly down. A bear flag follows a drop and tilts sideways or slightly up.
Try it on real charts
Each chart below is a real stock on a real date. Call it bullish or bearish, then see what happened over the next 10 trading days.
The rules we use
Many chart examples online are loose. In SwipeTrainer a flag must pass a strict check before it is used:
- A real pole: a move of at least 12% in 3 to 8 days, built from several candles going the same way, not one big gap day.
- A shallow pause: the flag gives back no more than about a third of the pole.
- A tidy range: the flag stays inside a narrow band (about 8% or less) and drifts sideways or slightly against the pole.
- Fading volume: trading volume during the flag is clearly lower than during the pole (we look for a drop of 50% or more).
- Still intact: the chart ends while the flag is still holding. If price has already broken out, the pattern is over.
How traders use it
Traders read a flag as a pause inside a trend: buyers (or sellers) are catching their breath before the next leg. Many watch for a close beyond the edge of the flag, ideally with rising volume, and use the opposite edge of the flag to judge how wrong they could be. Some measure the pole to get a rough idea of the next move. None of this is a promise: flags fail often, and the outcome examples below include failures on purpose.
Common mistakes
- Calling a trend a flag. If the "flag" keeps climbing, there was no pause.
- Counting a single gap day as a pole. A pole is several days of steady movement.
- Ignoring volume. A flag without fading volume is just a drift.
- Entering after the breakout is already stretched.
Practise this pattern on your phone
SwipeTrainer is a free game: swipe bullish or bearish on hundreds of real historical charts and learn what happened and why.
Frequently asked questions
What is the difference between a bull flag and a bear flag?
A bull flag forms after a sharp rise and pauses sideways or slightly down. A bear flag forms after a sharp drop and pauses sideways or slightly up. Both are continuation patterns.
How long should a flag last?
Roughly one to four weeks on a daily chart. Much longer and it becomes a general consolidation rather than a flag.
Do flags always break in the direction of the pole?
No. A flag only raises the odds, it never guarantees the move. That is why practising on real examples, including the ones that failed, is useful.