Not advice Educational reference only — nothing here predicts a price. What the measured outcomes are · Sources

Reading a chart

Chart shapes

Zoom out from individual candles and the price line draws larger figures — a W, an M, a U, a head between two shoulders. Each entry shows the figure as a line chart with its defining levels dashed in, and the same price action redrawn in candles.

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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

Reversal shapes

14

The figures that mark a trend changing hands. Published “success rates” for these mostly trace back to Bulkowski's Encyclopedia of Chart Patterns and swing widely with how a completed pattern is defined — treat them as folklore with data attached, not as odds.

Double bottom

Bullishstudied
Line
Candles

The W. Price falls to a low, bounces, falls back to roughly the same low, and turns up again — sellers failed twice at the same floor. The pattern completes when price closes above the middle peak (the neckline); that level is where traders measure the target from.

Triple bottom

Bullishstudied
Line
Candles

A double bottom with one more test of the floor. More touches of the same level generally means a more meaningful break when it finally gives — but it also means a longer base, so the breakout is what matters, not the third bounce.

Inverse head and shoulders

Bullishstudied
Line
Candles

Three lows: a shallow one, a deeper one, then a shallow one again, with two rallies to a common level between them. The deep middle low is the head; the flat line across the rally highs is the neckline. A close above the neckline completes it — widely cited as one of the more dependable reversal shapes.

Rounding bottom (saucer)

Bullishstudied
Line
Candles

A slow, smooth U with no sharp turn — panic draining out over weeks or months and steady buying replacing it. Because the turn is gradual there's no single trigger candle; traders wait for price to reclaim the level the decline started from.

Cup and handle

Bullishuntested
Line
Candles

A rounding bottom that returns to its starting level, then a small, shallow pullback — the handle — before the breakout. The handle is the tell: a brief, orderly dip on light volume, not a slide back into the cup. Entry is conventionally above the handle's high.

Falling wedge

Bullishuntested
Line
Candles

Price keeps drifting lower, but each leg down is smaller than the last and the two boundary lines converge. Selling is exhausting itself rather than accelerating — these usually resolve upward, out through the falling upper line.

V-bottom (spike)

Bullishuntested
Line
Candles

A sharp capitulation low with no basing at all — straight down, straight back up, often around a panic or a news shock. The hardest reversal to trade, because it only looks like a V once the right-hand side is already built.

Double top

Bearishstudied
Line
Candles

The M. Price rallies to a high, pulls back, retests the same high and fails — buyers ran out at the same ceiling twice. It completes on a close below the valley between the two peaks.

Triple top

Bearishstudied
Line
Candles

Three failed attempts at the same ceiling. The more often a level rejects price, the more supply is presumed to be sitting there — but the pattern only counts once price breaks the shared low beneath it.

Head and shoulders

Bearishstudied
Line
Candles

Three peaks — a middle one higher than the two beside it — sitting on a common support line drawn across the intervening lows. The classic top: each rally is weaker than the last, and the close below the neckline is the signal, not the right shoulder itself.

Rounding top

Bearishstudied
Line
Candles

A smooth inverted U — buying pressure fading gradually rather than breaking. Slow to confirm and easy to mistake for a pause, so it's usually read alongside declining volume through the curve.

Inverted cup and handle

Bearishuntested
Line
Candles

The cup and handle upside down: a rounded top, a return to the level the rally started from, then a weak bounce (the handle) before price breaks lower. Read the same way as its bullish twin, in reverse.

Rising wedge

Bearishuntested
Line
Candles

Price still makes higher highs, but the gains shrink and the two boundary lines squeeze together — a rally running on fumes. These typically break down through the lower line, and the fall is often quick because there's little support built on the way up.

Diamond top

Bearishuntested
Line
Candles

Swings widen, then narrow again, outlining a diamond — volatility spiking at a top and then compressing as the market runs out of buyers. Rarer than the other reversals and easy to over-fit; the break below the lower right edge is the confirmation. A diamond bottom is the same shape at a low.

Continuation shapes

11

Pauses rather than turns: the trend stops to catch its breath, builds a flag, triangle or channel, then carries on. The prior move is half the pattern — a flag without a pole in front of it is just noise.

Bull flag

Bullishstudied
Line
Candles

A near-vertical rally (the pole), then a tidy drift lower between two parallel lines. Profit-taking, not a reversal — the tell is that the drift is shallow and on lighter volume. The trigger is a close back above the upper flag line.

Bear flag

Bearishstudied
Line
Candles

A steep drop followed by a shallow upward drift in a tight channel — a bounce that never gets going. It completes on a close below the lower flag line, resuming the fall.

Bullish pennant

Bullishuntested
Line
Candles

Same setup as a bull flag, but the pause is a small symmetrical triangle instead of a channel — the range squeezes shut before the next leg up. Note that pennants are among the weaker-performing patterns in published studies, so the prior trend and the breakout volume carry most of the weight.

Bearish pennant

Bearishuntested
Line
Candles

A sharp drop, a brief coiling pause, then continuation lower. The tighter and shorter the coil, the more it reads as a pause rather than a base.

Ascending triangle

Bullishstudied
Line
Candles

A flat ceiling with a rising floor beneath it. Buyers keep paying up on each dip while the same sell orders sit at one price — when that supply is finally absorbed, price breaks out through the top.

Descending triangle

Bearishstudied
Line
Candles

A flat floor with falling highs pressing down on it. Sellers get more impatient each time while one bid holds the line — the break is usually downward through that floor.

Symmetrical triangle

Continuationstudied
Line
Candles

Lower highs and higher lows converging to a point — a coiling spring with no directional bias of its own. It most often breaks in the direction of the trend that preceded it, which is why the chart to the left of the triangle matters more than the triangle.

Rectangle (trading range)

Continuationstudied
Line
Candles

Price bouncing between a flat ceiling and a flat floor — supply and demand in balance while the market waits for something. Traders either fade the edges while it holds or trade the eventual break; the range height sets the conventional target.

Ascending channel

Bullishstudied
Line
Candles

Higher highs and higher lows running between two parallel rising lines — an orderly uptrend. Useful mainly as a map: the lower line is where dips have been bought, and a decisive break below it says the trend's character has changed.

Descending channel

Bearishstudied
Line
Candles

The mirror image: lower highs and lower lows between parallel falling lines. Rallies to the upper line are where sellers have repeatedly stepped in, until a break above it says they've stopped.

Broadening formation (megaphone)

Volatilitystudied
Line
Candles

The opposite of a triangle: each swing is wider than the last, the boundary lines diverge. It marks rising disagreement and volatility rather than a direction — usually a signal to size down rather than to pick a side.

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The line between studied and untested is drawn by whether a peer-reviewed test of the specific claim could be found, and those tests are listed on the Sources page under “Evidence and base rates”. If you know of a published test of something tagged untested, the tag is wrong and should change — that is the point of labelling it at all.