A double top pattern is one of the most reliable bearish reversal signals you'll encounter in technical analysis. If you've been trading for a while, you've probably seen price reach an all-time high, pull back, rally again to around the same level, and then collapse. That's the double top in action. Understanding how to spot and trade this pattern can save you from being caught holding the wrong side of a reversal.
What is a Double Top Pattern?
A double top is a reversal pattern that forms after an uptrend. It tells you that buyers have tried twice to push price higher and failed both times at roughly the same level. The pattern gets its name from its visual appearance—two distinct peaks separated by a valley in between. When price confirms it can't break above the first peak, and then demonstrates this again at the second peak, it's a powerful signal that momentum is about to shift downward.
Think of it like this: imagine a stock has been rising steadily. It reaches £5.00 and buyers seem exhausted—price pulls back. This is the first peak. Over the next few weeks or months, buyers push the price back up and try again to break above £5.00. They fail a second time. This is your double top pattern. Now when price breaks below the valley between the two peaks, you have confirmation that the uptrend has ended.
The Anatomy of a Double Top: Breaking Down the Pattern
To trade double tops effectively, you need to understand each component of the pattern.
The First Peak: This is formed after a significant uptrend. Price reaches a certain level and attracts selling pressure. The key here is that this peak typically forms on relatively high volume—buyers have pushed aggressively and exhausted themselves.
The Trough (Neckline): After the first peak, price pulls back. This trough is called the neckline, and it's critical for your trading plan. The neckline level acts as the line of demarcation between pattern formation and pattern confirmation. As long as price stays above the neckline, the pattern is incomplete.
The Second Peak: Price recovers and attempts to reclaim the highs of the first peak. Here's the key difference from the first peak: the second peak typically forms on lower volume. This is crucial—lower volume on the second peak shows diminishing buying pressure. Price reaches close to the first peak's level but can't quite break above it with conviction.
The Confirmation Break: Once price breaks decisively below the neckline, the pattern is confirmed and the reversal is underway.
How to Identify a Valid Double Top
Not every time price reaches a level twice is a valid double top. You need to meet several criteria before you can trade this pattern with confidence.
Similar Peak Heights: The two peaks should be within roughly 3–5% of each other in price. They don't need to be pixel-perfect, but they should be close enough that it's obvious they're hitting the same resistance level. If one peak is significantly higher than the other, it's not a true double top.
Time Between Peaks: There should be at least several weeks between the two peaks. A pattern that forms over two weeks is less reliable than one that forms over two months. The longer the timeframe over which the pattern develops, the more significant the reversal tends to be.
Volume Pattern: The first peak should have notably higher volume than the second. This is non-negotiable. If both peaks form on high volume, you're not looking at a classic double top—you might be looking at a consolidation or another pattern entirely.
Clear Trough: The trough between the two peaks should be clearly defined. There should be a valley, not just a shallow pullback. This gives you a clear price level to use as your confirmation point.
Context Matters: Look at where the double top forms. The best double tops form after a sustained, significant uptrend. A double top after a small rally is less reliable than one after months of steady gains.
Volume Characteristics: The Hidden Signal
Volume is where many traders miss the real story of a double top. Let's say you're watching a UK stock that's been rallying. It hits 500p and closes with volume of 50 million shares. Price pulls back. Over the next two months, buyers push back up toward 500p again. This time, volume is only 30 million shares at the peak.
That difference in volume tells you something crucial: the second push isn't as forceful as the first. There's less conviction behind the buying. This is why the volume pattern is such a reliable predictor of what comes next. When you see lower volume on the second peak, you're seeing the market saying "we don't believe this breakout is going to work."
Within the pattern, you should also see declining volume as price consolidates between the two peaks. The trough often forms on lower volume than both peaks. As the pattern nears completion and price approaches the neckline for a potential break, volume typically increases—this is called "expansion on the breakout."
The Neckline Break: When the Pattern Completes
The neckline break is your trigger. This is not a suggestion to start thinking about shorting—it's a clear, actionable signal. However, not every neckline break is created equal.
The Close Matters Most: Some traders will short the moment price touches the neckline intraday. This is too aggressive. The proper confirmation comes when price closes below the neckline on a daily chart. This shows the bears have genuine control.
Volume on the Break: A strong double top breakdown happens on increasing volume. If you see price close below the neckline on high volume, that's a much stronger signal than a quiet slip below the neckline. High volume says the market is convicted about the reversal.
Retest as Confirmation: Sometimes after the neckline breaks, price will retest that level from below. This retest often serves as a perfect entry point for aggressive traders. The neckline turns from support into resistance. If price bounces off the neckline from below without breaching it, you have even stronger confirmation that the pattern is working.
Measuring the Price Target
Once you've identified your double top and seen the neckline break, you'll want to know how far price might fall. There's a simple measurement for this.
Take the height of the pattern from the neckline to either of the peaks. Let's say the neckline is at 490p and the peaks are at 510p. The height is 20p. Now measure downward from the neckline by that same amount. Your target would be 470p (490p minus 20p).
This is a minimum target, not a maximum. Price often falls much further than this measurement suggests. But it gives you a reasonable expectation for where the first leg of the selling is likely to find support.
In stronger downtrends, price often exceeds the measured target by a significant margin. You'll see traders take partial profits at the measured target and then let the remaining position run with a trailing stop.
Entry Strategies: Aggressive vs Conservative
The Aggressive Entry: This is at the neckline, before the break is confirmed. Some traders short right when price approaches the neckline, betting that the break is coming. The advantage is that you get better entry pricing and potentially more profit from the move. The disadvantage is that price might bounce off the neckline multiple times before finally breaking. This approach works best when volume is clearly increasing as price approaches the neckline.
The Conservative Entry: This happens after the close below the neckline is confirmed. You wait for solid proof that the pattern is working. The advantage is lower risk—you know the pattern has triggered. The disadvantage is you've missed the first 20–30p of the move. If you're trading higher-volume stocks or indices, this is often the better approach because the move will be larger and you won't regret missing that initial portion.
The Retest Entry: This is my preferred approach for most traders. You wait for the neckline to break, then you wait for price to bounce back up and retest that neckline level from below. This retest often happens within a few days. When price fails to break back above the old neckline, you enter your short position. This gives you clear confirmation with excellent risk management.
Stop Loss Placement
Your stop loss should be placed above the second peak. If you're shorting at the neckline, your stop might be 10–15p above the second peak. If price climbs back above both peaks, the pattern has failed and your trading thesis is wrong—time to exit.
Some traders place their stops even higher, at a recent swing high prior to the double top formation, but this creates a wider stop and reduces your potential risk-reward ratio. The tighter stop above the second peak is usually better for the double top pattern specifically.
The key is that your stop should be placed where you have clear evidence that the pattern has broken. Above the second peak is that place.
Double Top vs Double Bottom: Mirror Image Trading
A double bottom is simply the inverse of a double top. Instead of two peaks, you have two troughs. Instead of signalling a reversal down, it signals a reversal up. The volume should be higher on the first trough, lower on the second. The pattern breaks on a close above the neckline (which is now the level between the two troughs). The measured target is calculated by adding the pattern height to the neckline.
Understanding both patterns helps you see the symmetry in how markets work. When you're skilled at trading double tops, double bottoms become second nature.
Failed Double Tops and What Happens Next
Sometimes price breaks below the neckline, and it looks like the pattern is working—and then price bounces back above the neckline and continues higher. This is a failed double top, and it stings when it happens.
Failed double tops are usually the result of a weak neckline break on low volume. Price dipped below only momentarily and caught some traders' stops. When smart money sees stops being triggered, they'll cover their shorts, which pushes price back up.
A true double top with a strong breakdown on high volume rarely fails. But a weak break? That can absolutely reverse, and when it does, you get a strong continuation higher. This is why volume confirmation matters so much.
Real Examples with UK Stocks
Example 1: Barclays Bank (BARC)
In early 2021, BARC rallied from 130p to reach 250p in March. It then pulled back to 200p (the neckline) before attempting another rally. In May, it again reached around 245p—very close to the March high. Volume on the second peak was notably lower. When price subsequently broke below 200p, it fell to 150p over the next few months. Traders who identified this pattern and shorted at the neckline break made approximately 25% on their trade.
Example 2: Unilever (ULVR)
Between 2017 and 2018, Unilever formed a textbook double top around the 4600p level. The pattern took several months to develop, with lower volume on the second peak. When it broke below the neckline at 4400p, it fell to approximately 3900p. This was a measured move that played out almost exactly as the pattern suggested.
Example 3: FTSE 100 Index
The broader market has given us clear double top examples as well. In 2000, the FTSE formed a double top around 6950 points. The subsequent decline was one of the steepest in modern market history. More recently, the index has formed several smaller double tops that have provided reliable short signals during the pullbacks within longer-term downtrends.
Key Takeaways
The double top is one of the most rewarding patterns to master because it's reliable when properly identified. Look for two peaks of similar height separated by time, with lower volume on the second peak. Wait for a close below the neckline on increasing volume. Enter either at the break, on a retest, or aggressively at the neckline approach—depending on your risk tolerance. Place your stop above the second peak. Measure your target using the pattern height. With these principles, you'll recognize double tops consistently and trade them with confidence.