The Descending Triangle Set-Up
A flat floor with a falling ceiling above it: sellers accepting less at every rally while one price keeps absorbing the declines.
MadStockAlerts Research · Updated September 4, 2026
What to take away
- The mirror of the ascending triangle, and the falling highs are the informative half.
- The flat floor is the level the set-up completes through; it is usually a price that has already held several times.
- The last lower high is where the reading stops holding, not the top of the whole triangle.
- A flat floor being tested repeatedly is being used up, the same way a ceiling is.
- Breaks of a well-defended floor accelerate, because the orders that were defending it are gone.
MAD Academy Training Video · 1:24
The floor that feels safe because it keeps holding
A descending triangle, and the mechanism that makes a repeatedly-defended level weaker rather than stronger. Plus the reclaim, which is the failure that hurts.
This lesson is part of a Stock Alerts + Tools plan.
The shape
Price finds the same floor more than once, and between those tests each rally stops lower than the one before it. Drawn, that is a horizontal line under the lows and a falling line over the highs, closing toward a point on the right.
The floor is a buyer with a size and a price, and the falling highs are the other side becoming less willing to wait for a better one. Sellers who were holding out for the old rally level take a lower one, then a lower one again, and the narrowing is those two positions converging.
- Two or more clear bounces from roughly the same price.
- Two or more highs, each measurably lower than the last.
- Ranges compressing as the structure matures.
- Volume falling through the triangle and expanding on the break.
Scroll the chart sideways to see all of it.
Why it forms
The horizontal floor is somebody buying a fixed amount at a fixed price and refreshing the order. Like any inventory it is finite, and each bounce consumes some of it. The pattern's outcome depends on whether the buyer finishes before the sellers do.
The falling highs answer that question in advance more often than not. A seller willing to accept progressively less is a seller who wants out more than they want the price, and a floor being defended against increasing urgency is a floor that eventually gets filled through. When it goes, there is nothing beneath it, which is why these breaks tend to be quick.
A level that has held three times feels safe and is the opposite. Each bounce is orders being filled, so the third test is defended by less than the first was. The comfort a repeatedly-held floor produces is exactly backwards from what the mechanism underneath it says.
| What to look at | Set-up intact | Set-up failing |
|---|---|---|
| The highs | Each one clearly lower than the last | Flat, or the newest one higher |
| The floor | Holding at the same price each time | Bounces starting above it, from higher lows |
| Volume on the bounces | Smaller with each successive one | Expanding, with wider bars off the floor |
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 flat floor | The price the lows are all stopping at | The reference the set-up completes through, and the level that becomes resistance if it goes. |
| The falling line | Drawn over two or more lower highs | The evidence half of the pattern. It is what says the sellers are becoming less patient than the buyer is stubborn. |
| The last lower high | The most recent rally before the break | Where the reading stops holding, because above it the falling-highs sequence the drawing rests on has ended. |
| The height at the base | The first high of the triangle minus the floor | What the measured objective is scaled to, taken at the widest part of the structure. |
Where the set-up completes
- 1The triggerThe set-up completes on a close below the flat floor. Volume expanding on the break is the usual confirmation, and here it is more informative than in most bearish shapes: a floor that has been actively defended tends to produce heavy trade when it finally fails, because the orders defending it are being filled all at once.
- 2Where the reading stops holdingThe reading stops holding above the last lower high. Using the top of the whole triangle instead is a common error and a costly one — the pattern's claim is about a sequence of falling highs, and one high above the previous one ends that claim regardless of where the structure's ceiling was.
- 3The measured objectiveThe conventional measured objective subtracts the height of the triangle at its widest point from the breakdown. As with the bullish mirror, measuring at the narrow end produces a target close enough to be useless, and it is the first thing worth re-checking when the number looks small.
- 4Through the moveThe convention watches the retest. A broken floor that becomes a ceiling — price rallying back to it and being turned away — is the structure confirming; a floor that is broken and immediately reclaimed is a failed break, and reclaimed breakdowns tend to run in the other direction with some force.
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
Structures with three or more touches on each line, inside a market that is already weak, sit at the top of this band. In a strongly rising market descending triangles resolve upward often enough to sit at the bottom of it, which is the context that moves this number most.
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 descending triangle 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 reclaim. Price closes below the floor, finds no follow-through, and comes straight back above it — and because the level had been defended, the accounts that sold the break are all positioned against a market that has just proved the buyer was still there. The move that follows a reclaimed breakdown is regularly larger than the breakdown would have been.
- A rally makes a higher high inside the triangle before the floor is tested again.
- The break of the floor closes back above it within a session or two.
- Bounces off the floor are getting bigger rather than smaller.
Scroll the chart sideways to see all of it.
Seeing it on a live chart
Mark the floor and then count the bounces off it. The count is the useful number: a level on its first test and the same level on its fourth look identical on the chart and are defended by very different amounts of remaining interest.
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