What a double top is
A double top is a chart pattern made of a pair of similar highs with a trough between them. It forms after a rise in price. The market pushes up, pulls back, rallies again to roughly the same level, and then fails to go higher.
Many traders read it as a sign that buying pressure is fading near a resistance level. Resistance is a price area where selling has stopped rises before. The pattern describes what has already happened on the chart. It does not tell you what price will do next.
The double top is the mirror of the double bottom. It belongs to the group of reversal patterns, together with the head and shoulders and the triple top.
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How to draw the structure
The pattern has these parts:
- Prior uptrend: a clear rise before the pattern. Without it, there is nothing to reverse.
- Peak A: the earlier high.
- Trough: the low between the peaks.
- Peak B: the later high, near the level of Peak A.
- Neckline: a horizontal line through the trough low.
- Breakdown: a close below the neckline.
Drawn example chart
This is a schematic drawing, not a real market:
Peak A and Peak B sit at about the same height. The trough sets the neckline. The pattern is only considered complete once price closes below that line.
Identification rules
Traders who use the double top in forex, indices or metals tend to check the same points:
- A trend comes before it. The pattern should appear after a visible advance, not in the middle of a sideways range.
- The peaks are similar. Peak B does not need to match Peak A exactly. It should be close enough that both clearly test the same resistance area.
- There is a real trough. The pullback between the peaks should be visible, not a tiny dip. A very shallow trough makes the neckline weak.
- There is space between the peaks. Peaks that are very close in time often form ordinary noise rather than a pattern.
- Momentum is weaker on Peak B. Some traders look for less volume or a weaker oscillator reading on the later peak. In spot forex there is no central volume, so tick volume is only a rough proxy.
- The neckline breaks on a close. A wick below the line is not the same as a candle closing below it. See candlestick patterns for how candles are read.
Until the neckline breaks, you only have a potential double top. Many apparent double tops turn into a range or a continuation of the uptrend.
The measured-move convention
The classic double top strategy in textbooks uses a measured move, also called a target projection. The method works like this:
- Measure the vertical distance from the peaks down to the neckline.
- Project the same distance downward from the point where price broke the neckline.
This is a convention, a way traders mark a reference level on the chart. It is not a forecast. Price may stop well before the projected level, go far past it, or turn back above the neckline. Treat the level as a planning reference for risk and position size, not as an expected outcome.
Some traders also watch for a retest: after the break, price returns to the neckline from below, and the old support may act as resistance. A retest does not always happen.
Invalidation
A pattern needs a clear point where it is considered wrong. Common invalidation rules are:
- Before the break: a close above both peaks means the double top did not form. The resistance has given way.
- After the break: a move back above the neckline and then above Peak B means the breakdown failed.
Defining invalidation in advance helps you decide where a stop-loss would sit and how large a position the account can carry. The risk management guide and the trading calculators page cover sizing.
Failure modes and false breakouts
The double top chart pattern fails often enough that you should plan for it. Typical cases:
- False breakdown: price closes just below the neckline, then reverses sharply back into the range. This is common around news releases and thin market hours.
- Peak B overshoots: the later high pokes above Peak A, triggers buy stops, and the trend continues. A slightly higher Peak B can also be read as a failed pattern rather than a top.
- No prior trend: a pair of highs inside a sideways market is usually just a rectangle or range.
- Timeframe mismatch: a double top on a short timeframe may be a small pullback inside a strong uptrend on a higher timeframe.
- Hindsight drawing: patterns look clean on old charts. In real time, you cannot know which high will turn out to be Peak B.
- Gaps: on indices and some CFDs, price can gap through the neckline or the invalidation level, so a stop may fill at a worse price.
Leveraged CFD and forex trading can lose money fast, and a pattern that looked valid does not limit that risk. Practising pattern recognition on a demo account first lets you see how often your own reading is wrong without real money at stake.
Related patterns
- Chart patterns - overview of reversal and continuation shapes
- Technical analysis - support, resistance and trend basics
- Trading psychology - why traders see patterns that are not there
Frequent questions
Is a double top a sell signal?
No. It is a description of price structure. Whether and how to act on it is your own decision, and the pattern often fails.
How similar must the peaks be?
There is no fixed rule. The peaks should clearly test the same resistance area. Traders judge this relative to recent volatility on the chosen timeframe.
Does the double top in forex work differently?
The structure is the same. The main differences are that there is no central volume in spot forex and that moves around news can create false breaks of the neckline.
Is the measured-move target reliable?
It is a convention for marking a reference level, not a prediction. Price can stop short of it or move past it.
What is the difference between a double top and a triple top?
A triple top has an extra test of the same resistance before the neckline breaks. See triple top and bottom.
