The double top and double bottom is a reversal pattern - one of the recurring shapes traders watch to time entries with a clear stop and target. Below is how to spot the clean version, trade it with defined risk, and prove it works before you rely on it.
What it looks like
A double top forms when price rallies to a high, pulls back, rallies again to about the same high, and fails - drawing an M. The low between the two peaks is the neckline; a close below it confirms the reversal. A double bottom is the mirror image - a W at the end of a downtrend, confirmed by a close above the middle high.
The pattern works because the second failure at the level shows buyers (or sellers) could not push through even with a running start. That rejection is the tell that the move is exhausted.
The structure at a glance
How to trade it
Every version of this setup shares the same three decisions - a trigger to enter, a level that invalidates the idea, and a measured place to take profit:
Where most traders lose with this pattern: forcing it. A pattern that needs squinting to see is not there. Wait for the clean version, let price confirm the break or retest, and size the trade with the position size calculator so a failed pattern costs a fixed, small amount.
What the entry actually costs you
Chart patterns are not in our measured research set - a double top depends on a judgement about how close two peaks must be to count, and we will not publish a win rate we cannot define reproducibly. The cost of trading it, though, is fully measurable, and it is the part most pattern guides leave out.
Double tops invite two entries: the neckline break, and the retest of that neckline as resistance. Traders often take both, and some scale in across them. Every one of those entries pays a spread, and the spread is a far larger share of the move than most traders assume:
| Instrument | Avg spread (pips) | Cost per lot (round turn) | Share of daily range | Annual bill at 5 round turns/week, 1.00 lot |
|---|---|---|---|---|
| EUR/USD | 0.45 | $4.50 | 0.50% | $1,170 |
| USD/JPY | 0.68 | $5.44 | 0.74% | $1,414 |
| GBP/USD | 0.93 | $9.30 | 0.84% | $2,418 |
| AUD/USD | 1.02 | $10.20 | 1.32% | $2,652 |
| Gold (XAU/USD) | 66.25 | $66.25 | 2.44% | $17,225 |
| Silver (XAG/USD) | 60.78 | $303.90 | 7.57% | - |
On EUR/USD the spread is half a percent of a normal day - small enough to ignore in a swing trade and large enough to matter if you are taking both the break and the retest on every pattern. On gold it is 2.44% of the daily range, and on silver 7.57%: roughly a thirteenth of everything the instrument does in a day, gone before the trade has moved. A double top strategy that looks marginally profitable on raw price will not survive being charged this twice per pattern.
This is also the single most common reason a backtest overstates a chart-pattern strategy. Free historical data is almost always bid-side only, so a naive replay pays nothing to enter, and every result comes out flattered. Test the pattern with real spreads applied and take one entry per setup rather than two. The measured figures for all 25 instruments are in the spread cost study, and average daily range gives the denominator those percentages are built from.
Backtest it before you trust it
This pattern is a starting hypothesis, not a signal. The only way to know whether it pays on your pairs is to replay real charts and trade it by hand across a large sample, then read the win rate, risk-reward, and expectancy it produces. Patterns that look obvious in a textbook often behave very differently across a hundred real trades.
Double Top & Bottom FAQ
What does a double top tell you?
A double top signals that an uptrend is failing. Price has tested the same resistance twice and been rejected both times, showing buyers cannot break through. A close below the low between the two peaks confirms the reversal and often leads to a move roughly equal to the pattern's height.
How do you confirm a double bottom?
Wait for price to close above the neckline - the high point between the two lows. Until that break, it is just a level being tested, not a confirmed pattern. The confirmed break, ideally with a retest that holds, is the lower-risk entry compared with anticipating the bounce.
How reliable are double tops and bottoms?
They are among the more dependable reversal patterns because the twice-rejected level is easy to define and widely watched. Reliability still depends on the trend context and timeframe, and false breaks happen, so the pattern should be backtested on your pairs before you size up on it.