A flat floor with a falling ceiling. Buyers keep defending one level while every bounce peaks lower, compressing price onto a fixed line of demand.
Two or more touches of one horizontal support, a descending line above joining lower highs, real convergence, and a confirmed close below the floor to trigger it.
In crypto this one breaks down more often than the textbook suggests, but it also produces sharp failed breakdowns when the flat floor is a well-known liquidity level. We publish both outcomes.
These are our own measurements, not textbook claims. A call counts as a win if price closed 5% in favour before it wicked 5% against, measured from the confirming close over the following 30 days. Everything that resolved is counted, including the failures.
| Population | Resolved | Hit rate | What it means |
|---|---|---|---|
| Published live and resolved | 39 | 54% | Calls we posted on the board before the move, graded 30 days out. |
| Backtested and resolved | 107 | 45% | Same detector replayed over history. Not the published record. |
Live and backtested are different populations and should not be averaged. The live figure is the one that came from calls published in public before the move. See every live and past call on the Chart Patterns board.
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