The Double Bottom Set-Up
Two lows at roughly the same price with a rally between them, and the high of that rally as the level the reversal is confirmed at.
MadStockAlerts Research · Updated September 4, 2026
What to take away
- Two lows do not make a double bottom. The neckline breaking is what makes one.
- The middle high is the price the whole shape is read from, and it is the last thing to happen.
- The second low being slightly higher is common and fine; markedly lower is a different shape.
- Volume should be lighter on the second low than the first — that comparison is the core evidence.
- The measured objective adds the depth of the pattern to the neckline.
Watch: Two lows are not a double bottom
Open lesson pageThe pattern is the neckline, not the W. Why the second low's volume is the real evidence, and what the third leg looks like when the shape fails. · 1:24
Trading Set-ups
Two lows are not a double bottom
Reversal · Bullish
A W on a chart is not a double bottom. It becomes one at a price, and the price comes last.
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The shape
Price declines to a low, rallies for several weeks, falls back to roughly the same low, and turns again. Drawn, it is a W. The high of the rally between the two lows is the neckline, and until that level is cleared what is on the chart is two lows and nothing more.
The distance between the lows matters. Two lows a few sessions apart are a market pausing; two lows separated by a real rally of several weeks are two separate attempts to sell it down, which is the thing being described. Very tight doubles are among the least reliable versions of this pattern.
- Two lows within a small percentage of each other, separated by weeks rather than days.
- A rally between them large enough to be a rally, commonly a tenth of the price or more.
- Lighter volume on the second low than the first.
- A meaningful decline into the first low — a reversal needs something to reverse.
Scroll the chart sideways to see all of it.
Why it forms
The first low is where a decline stopped. That tells you demand appeared at a price, and nothing more. The rally that follows is that demand being tested by everybody who wanted to sell into any strength.
The second low is the real test. Price returns to the same area, and the question is whether the sellers who drove the first decline are still there. If the second low forms on visibly lighter volume, the reading is that they are not — that the supply which created the first low has largely been filled, and the same price is now being defended by fewer people on the other side.
The pattern is not the two lows, it is the neckline break, and the difference is not pedantry. Every low in a downtrend is the second low of a double bottom until price goes below it. Calling the shape before the level is cleared is the single most common way this pattern is misread, and it is why the definition puts the confirmation and not the outline at the centre.
| What to look at | Set-up intact | Set-up failing |
|---|---|---|
| Volume on the second low | Clearly lighter than the first | Equal or heavier than the first |
| Spacing of the lows | Weeks apart, with a real rally between | A few sessions apart, barely a bounce |
| The rally off the second low | Wide bars, closing near the highs | Grinding, overlapping, stalling early |
The price points that define it
A set-up is a shape plus a handful of prices. The shape is what makes it recognisable; the prices are what make it something that can be measured, reviewed afterwards and argued about honestly. These are the levels this one is read from.
| Level | Where it sits | What it tells you |
|---|---|---|
| The neckline | The high of the rally between the two lows | The reference the set-up completes through. It is the only price in the shape that confirms anything. |
| The lows | The two turning points, at roughly the same price | The floor of the structure. Below them there is no double bottom, only a continuing decline. |
| The pattern depth | Neckline minus the lower of the two lows | What the measured objective is scaled to, and a measure of how much the market disagreed while the shape formed. |
| The second low's volume | Compared against the first low's | Not a price, and the single most useful comparison in the pattern. It is what says the sellers have thinned out. |
Where the set-up completes
- 1The triggerThe set-up completes on a close above the neckline. Before that the shape has not formed, however convincing the two lows look — a distinction worth holding onto, because the interval between the second low and the neckline break is where almost all of the pattern's failures happen.
- 2Where the reading stops holdingThe reading stops holding below the lower of the two lows. Some conventions use the second low specifically, which is tighter and is invalidated more often for reasons that have nothing to do with the pattern; the lower of the pair is the level the structure itself rests on.
- 3The measured objectiveThe conventional measured objective adds the depth of the pattern — neckline to the lower low — to the neckline. It is a straightforward convention and, as usual, reached less often than the break follows through. Deep double bottoms produce targets a long way off, which is worth noticing before quoting one.
- 4Through the moveThe convention watches for the neckline to hold as support on the pullback that usually follows the break. A pattern that clears the neckline and then falls back through it has not confirmed anything, and that retest is where the difference between a reversal and a rally inside a downtrend becomes visible.
Each of these describes where a convention puts a level, not what anybody should do at it. Whether a level is worth acting on at all is a question about position size, cost and the rest of a plan, and the answer differs for every account.
How often it follows through
The band describes properly-spaced doubles with lighter volume on the second low, measured from the neckline break rather than from the second low. Tight doubles a few sessions apart are much weaker, and the widely-quoted figures for this pattern are inflated by counting only the ones that worked.
Read that as a floor rather than an expectation. A set-up that follows through two times in three still leaves one in three that does not, and the one that does not can move further and faster than the two that did. That arithmetic is what position sizing exists to answer, and no pattern improves it.
What this number is not
It is not our record, it is not a forecast for any particular chart, and it is not the rate at which the measured objective is reached — that is always lower. It is a conservative reading of how often a completed double bottom kept going before it went back through the level that invalidates it. Base rates move with the market, the timeframe and the exact definition used, and every one of those varies.
What failure looks like
The common failure is a third low. Price clears the neckline, cannot hold above it, comes back and this time goes through both previous lows — and the shape that looked like a base turns out to have been a pause in a decline. Because double bottoms are widely watched, the positioning above the neckline is one-sided, which is what makes that third leg quick.
- The second low forms on volume as heavy as the first.
- The rally toward the neckline is grinding rather than decisive.
- The break of the neckline closes back below it within a session or two.
Scroll the chart sideways to see all of it.
Seeing it on a live chart
Put the volume strip on and compare the two lows directly. That single comparison — heavier or lighter on the second — does more work than the outline does, and it is invisible on a chart with the volume panel switched off.
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