Double top and double bottom patterns
A double top is two nearly equal highs with a dip between them, a sign the market tried a level twice and could not break through. A double bottom is the mirror image at the lows.
What it looks like
The first peak (or trough) sets a level. Price pulls back, then returns to nearly the same level and stalls again. The dip in between forms a neckline. Traders treat a move through the neckline as confirmation that the pattern is complete.
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 double top / double bottom must pass a strict check before it is used:
- Matching extremes: the two highs or lows are within about 2.5% of each other.
- Enough time between: 8 to 40 trading days separate the two touches.
- A real dip in the middle: price retraces at least 6% between the two touches.
- The extremes lead the chart: there is no higher high (or lower low) in the window, so these really are the top or bottom of the range.
- Not broken yet: the chart ends before price has already pushed through the neckline.
- Visible lead-in: the first touch is not at the very left edge of the chart.
How traders use it
Many traders wait for a close beyond the neckline before acting, since a double top can simply become a triple top, and a double bottom can fail. Falling volume on the second touch is often taken as a sign of weakening conviction. The outcomes in this quiz include setups where the pattern worked and setups where it did not.
Common mistakes
- Acting before the neckline breaks.
- Calling two unrelated bumps a double top. The two highs must really match.
- Ignoring the trend that came before. A double top matters most after an advance.
- Treating the textbook price target as a promise.
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 does a double top mean?
Price reached the same high twice and failed, which some traders read as a sign the uptrend is tiring. It is confirmed only if price falls through the neckline.
What is the difference between a double top and a double bottom?
A double top forms at highs and is usually read as bearish, a double bottom forms at lows and is usually read as bullish.
How reliable are double tops and bottoms?
They fail regularly. They raise the odds in some situations but never guarantee a result, which is why practising on real examples helps.