A double top and double bottom pattern is a two-attempt reversal. In a double top, price fails twice at roughly the same high and then breaks the swing low between the two attempts; a double bottom is the mirror image at a low. The pattern is only confirmed when that middle swing, the neckline, breaks.
Quick answer: what is a double top and double bottom pattern?
It is a reversal pattern built from two failed tests of the same level. A double top makes two highs near one price with a pullback between them; a double bottom makes two similar lows. The signal comes only when price closes through the pullback swing, the neckline. Until then it is just a level holding.
What the pattern says about market structure
A healthy uptrend makes higher highs and higher lows. A double top is the moment that rhythm stalls: buyers push back to the previous high but cannot clear it. Our guide on how to identify market structure with highs, lows and breaks explains which swings count.
The second top on its own proves nothing, because many uptrends pause at an old high and then carry on. The structure only changes when price falls through the swing low between the two tops. Now the market has failed to make a higher high and has made a lower low, which is a reversal in structural terms.
A double bottom reads the same way upside down. Sellers fail to make a lower low, then price breaks above the swing high between the two lows.
How to identify a valid double top or double bottom
Most charts show plenty of rough M and W shapes. We only treat one as a pattern when all four of these are present.
- A trend to reverse. A double top needs a prior advance, a double bottom a prior decline. In a sideways range the same shape is just two touches of the range edge.
- A level that matters. The tops should form at resistance that the higher timeframe respects. Our guide to ranking the key levels that count shows how we grade them.
- Two distinct swings. There must be a real pullback between the tops, not two neighbouring candles. Tests that close together are usually one level being worked, not two attempts.
- Roughly equal extremes. The second top can fall a little short or poke slightly through the first. We judge it as a zone, not a single price.
Where the neckline sits
The neckline is the lowest point of the pullback between the two tops, or the highest point of the bounce between two bottoms. Where that swing has a long wick, we mark a narrow zone from the wick to the nearest closes. That is the line the market has to break.
Confirmation and entry
We need a candle body to close beyond the neckline on the timeframe we trade. A wick through it is not enough, because stops sitting just under an obvious swing low are often cleared and then price recovers. Our guide on how to avoid false breakouts covers that trap in more detail.
| Factor | Enter on the break close | Enter on the retest |
|---|---|---|
| Entry price | Worse, after the move | Better, back at the neckline |
| Stop distance | Wider | Tighter |
| Missed trades | Few | Many, retests often never come |
| Proof the level flipped | None yet | Some, if the retest is rejected |
The retest option is our breakout and retest strategy with entry, stop and target applied to the neckline: old support should now act as resistance. Pick one method and use it every time.
Stop, target and failure
Where the stop goes
The conservative stop sits above the higher of the two tops, plus a buffer for the spread. If price makes a new high there, the double top is simply wrong. A tighter stop above the retest high cuts the risk but gets hit more often by noise. Our guide on where to place a stop loss with price action explains how we size the buffer.
The measured move is a convention
Chart books project the pattern’s height, from the tops to the neckline, down from the break point. Treat that as a rough guide, not a forecast. We compare it with the next support zone and take profit at whichever comes first, and we skip trades where the reward is less than twice the risk.
When the pattern has failed
Write the failure rule before you enter. Ours has two parts:
- A close back above the neckline after the break is a warning: we reduce or exit.
- A move above the tops ends the idea completely, and the old uptrend has resumed.
Worked example: a double top at resistance
Example, using hypothetical figures on a £5,000 account where we risk 1% per trade, or £50. A hypothetical index has rallied for three weeks into a resistance zone at 8,200 that capped price twice last year.
It peaks at 8,210, pulls back to 8,080, then rallies to 8,195 and stalls. A 4-hour candle then closes at 8,060, below the 8,080 neckline. We enter short on that close.
- Stop: 8,225, above the higher top plus a buffer, so 165 points of risk.
- Size: £50 ÷ 165 points = about £0.30 per point on a spread bet.
- Measured move: 8,210 minus 8,080 is 130 points, giving a guide of about 7,950.
- Next support: a zone at 7,780, so the measured move comes first and becomes our first target.
Here the measured move is only 110 points away against 165 points of risk, which fails our two-to-one filter. Waiting for a retest of 8,080 with a stop above it at 8,140 would cut the risk to 60 points, making the second target of 7,780 worth the trade. Our guide on how to calculate position size for spread bets and CFDs shows the formula. Spread bets are leveraged, so a gap through the stop can cost more than the planned £50.
Common mistakes with double tops and bottoms
- Selling the second top. Until the neckline breaks, the uptrend is still intact.
- Seeing the pattern everywhere. Two touches of a range edge with no prior trend are not a reversal.
- Trusting the measured move. It is a convention from chart books, not a level the market knows about.
- No written failure rule. Without one, a close back above the neckline turns into hope.
- Believing a quoted success rate. Pattern recognition is subjective, so figures depend on who drew the pattern.
That subjectivity is why researchers automate it. A National Bureau of Economic Research study that coded patterns, double bottoms included, and tested US stocks from 1962 to 1996 found that several technical patterns provided incremental information about returns. That is evidence of some information content, not of a profitable rule.
Frequently asked questions
What is the difference between a double top and a head and shoulders?
A double top has two highs at roughly the same level. A head and shoulders has three, with a higher middle peak. Our guide to the head and shoulders pattern and its neckline break covers that version.
Do the two tops need to be exactly equal?
No. We treat the area as a zone, and a second top slightly below or slightly above the first still counts. What matters is that the second push failed to make real progress.
Which timeframe works best?
Daily and 4-hour charts give fewer, clearer patterns with more meaningful necklines. On very short timeframes, M and W shapes appear constantly and many are noise.
How reliable is a double bottom?
We have found no independent, verifiable figure, so we do not quote one. Judge it by your own forward-tested results with fixed rules for the neckline, stop and failure.
Next steps
A double bottom is one way a downtrend ends. Our guide on how to spot the start of a new trend with price action shows what to look for once the neckline breaks.
Discovering the beginning of new trends and assessing price position are part of our price action trading course, and the basics section is free to start.
This article is for education only and is not financial advice. Trading leveraged products such as CFDs and spread bets carries a high risk of losing money.
