The Rounding Top Set-Up
An advance that loses speed, flattens into a dome, and turns down over months — with the price the advance came from as the level that ends it.
MadStockAlerts Research · Updated September 4, 2026
What to take away
- The advance decelerating is the pattern; there is no single high to point at.
- The rim — the price the advance started from — is the level the set-up completes through.
- Volume falling away through the dome is the shape's evidence about itself.
- Rounding tops are less symmetric than rounding bottoms, because declines run faster than advances.
- A dome that forms in a fortnight is not one; this shape needs months.
MAD Academy Training Video · 1:24
An advance that runs out rather than breaks
No spike, no single high, no dramatic day. What a dome is made of, why it is less symmetric than its bullish mirror, and where the evidence actually lives.
This lesson is part of a Stock Alerts + Tools plan.
The shape
An advance gradually runs out of pace. Up bars get smaller, price flattens across the top for a stretch with no obvious high, and then begins to fall as gradually as it rose. Over months the outline is a dome.
The asymmetry is the honest complication. Rounding bottoms tend to mirror themselves; rounding tops usually do not, because the decline out of one moves faster than the advance into it. Expecting the right half to match the left is the commonest way this pattern gets called too early.
- An advance whose up bars are visibly shrinking rather than extending.
- A stretch of weeks at the top with no identifiable single high.
- Volume falling steadily through the dome, including on the up bars.
- Months of structure, not weeks.
Scroll the chart sideways to see all of it.
Why it forms
An advance continues while demand keeps arriving. A dome is what it looks like when that demand tapers instead of stopping: each push higher is bought by slightly fewer people, so each one covers slightly less ground, and eventually the pushes stop covering any ground at all.
Nothing dramatic marks the turn because nothing dramatic happens. Supply does not surge; demand simply thins until the ordinary, everyday selling that was previously absorbed is no longer absorbed. That is why the top of the dome is flat and uneventful, and why so few people identify one while it is forming.
Volume is what separates a dome from a pause. Demand tapering shows up as volume declining across the whole structure, including on the days price rises. A flat top on steady or rising volume is a market consolidating, and the two look identical in price alone.
| What to look at | Set-up intact | Set-up failing |
|---|---|---|
| The advance into it | Up bars shrinking as it goes | Up bars extending — still being bought |
| Volume through the dome | Declining, including on up days | Steady or rising on the up days |
| The turn | Gradual, no single dramatic high | A spike and an immediate collapse |
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 rim | The price the advance began from | The reference the set-up completes through, and the level the whole structure has been working back toward. |
| The dome | The flat stretch at the top, not a single bar | The ceiling of the reading, and a zone rather than a level — which is what makes this shape hard to time and easy to recognise afterwards. |
| The height | The dome minus the rim | What the measured objective is scaled to, and a measure of how far the advance had travelled before it tapered. |
| The volume trend | Across the whole structure | Not a price, and the evidence the pattern rests on. Declining volume through a flat top is what says demand is tapering rather than resting. |
Where the set-up completes
- 1The triggerThe set-up completes on a close below the rim. As with the bullish mirror the break is undramatic and arrives after weeks of visible approach, which is what makes this shape easy to identify late and hard to act on early.
- 2Where the reading stops holdingThe reading stops holding on a close back above the dome. Because the dome is a zone, this is a soft level by the standards of the rest of the catalogue, and the practical convention is to take the highest closes across the flat stretch and treat anything above them as the shape being finished.
- 3The measured objectiveThe conventional measured objective subtracts the height of the dome from the rim. These are large structures and the resulting targets are correspondingly distant; the rim carries the information and the target carries the scale.
- 4Through the moveThe convention watches whether the decline out of the dome keeps its pace. Rounding tops routinely accelerate once the rim goes, because the flat top has left a large population of holders who bought across a narrow band of prices and are all underwater at the same moment.
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
A little under the rounding bottom, for two reasons: tops taper less tidily than bottoms exhaust, and the long-run upward drift of markets works against every bearish reversal. Months of declining volume across a flat top is what the upper end of this band describes.
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 rounding top 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 failure is the continuation. What looked like a dome turns out to have been a long pause, price clears the flat top, and the advance resumes — usually with the volume that had been missing. Because rounding tops take months, a great deal of patience gets invested in them before that becomes clear, which is the practical cost of the shape rather than any subtlety in reading it.
- Volume picks up on the up days inside the flat top.
- The dome is only a few weeks long, so it is a range rather than a top.
- Price holds the rim on the first test rather than cutting through it.
Scroll the chart sideways to see all of it.
Seeing it on a live chart
Look at the volume trend across the top rather than the price shape. Demand tapering and a market resting produce the same flat price band, and the only place the difference shows up is in how much trade the up days are getting.
Open a chart — for members