These figures are read by proportion, not by measurement. A cup may be deeper or shallower, a wedge steeper or flatter, a channel longer or shorter, and the candles inside will never repeat exactly — what identifies the pattern is the sequence of highs and lows tracing the same overall form. When a price line approximates one of these shapes, it is conventionally interpreted as described here, with more weight given the cleaner the fit and the more decisive the breakout. An imperfect match is the norm rather than the exception, and a shape that needs to be squinted at is usually not there at all.
How these fit together
Zoom out and the same tug-of-war plays out over weeks instead of days. Reversal shapes are all records of a level being tested and holding, and they grade by how many times that happened — a double top is two failures, a triple top three, a head and shoulders three at uneven heights. Continuation shapes are all records of a pause, and they differ only in the geometry of their boundaries: parallel lines make a flag or channel, converging lines make a triangle, pennant or wedge. Across both groups the conventions are the same — volume contracts through the pattern and expands on the break, and the height of the pattern projected from the breakout gives the traditional target.
- Double → triple → head and shoulders — the same failure at a level, recorded more times
- Parallel boundaries → flag, channel, rectangle · converging boundaries → triangle, pennant, wedge
- Rising wedge is bearish, falling wedge is bullish — the exceptions to reading direction as the signal
- Measured move → project the pattern's height from the breakout point for the conventional target
- Volume shrinks inside the pattern, expands on the break — a breakout without that expansion is the one that fails
- Cup and handle is a rounding bottom plus a pause, which is why it belongs to both families
How to read the evidence tag
Every entry here carries one of three tags. The tag rates the evidence behind the claim the entry makes — not how popular the tool is, how old it is, or how confident the people teaching it sound. Close to half of the entries on this site sit on the weakest tier — including every one of the eighteen Smart Money Concepts, which are drawn here in the same ink as Wilder’s ADX and deserve to be told apart from it. That is the honest position rather than an oversight.
- defined33 entries
True by arithmetic. This entry describes a calculation or a piece of terminology, and makes no claim about what price will do next. Nothing here can be wrong except a typo.
- studied56 entries
The predictive claim attached to this entry has been tested in peer-reviewed research. Being on this tier does not mean it works — across the literature these edges are typically small, unstable between markets and periods, and often gone after costs.
- untested87 entries
Widely taught and widely believed, but no published test of the claim was located while building this page. Treat it as a description of what traders do, not as evidence that doing it pays.