Also known as: Coil · Converging triangle · Contracting triangle
A symmetrical triangle is a neutral consolidation pattern formed by a series of lower highs and higher lows, so that a descending upper trendline and an ascending lower trendline converge toward an apex. It shows a market in balance, with volatility contracting, and the decisive close outside either line tells traders which side has won.
Because it does not have a built-in bias, the symmetrical triangle is classed as bilateral: the trade is defined by the breakout, not by the shape.
What the pattern looks like
Price makes a high, pulls back, then rallies to a lower high. The next pullback ends at a higher low. Each swing is smaller than the last, and the two trendlines drawn across the highs and lows slope toward each other at roughly similar angles. Eventually one side gives way and price expands out of the coil.
In practice, symmetrical triangles often resolve in the direction of the prior trend, which is why the example here shows an uptrend, a coil and an upside breakout. But downside breaks from the same setup are common enough that pre-judging the direction is risky.
How to identify it
- Context. Note the prior trend; it provides a lean, not a rule.
- Lower highs. At least two, connected by a falling upper trendline.
- Higher lows. At least two, connected by a rising lower trendline.
- Convergence. The lines meet at an apex to the right of current price.
- Contraction. Candles and volume typically shrink as the triangle matures.
- Breakout. A close beyond either trendline, ideally before the final third of the pattern.
How to trade it
Entry. Enter on a close outside the triangle in the direction of the break. Some traders use a buy-stop above the upper line and a sell-stop below the lower line, cancelling the other order once one triggers. A retest of the broken trendline offers a second chance.
Stop. A logical stop sits back inside the pattern, beyond the most recent swing on the opposite side. A return deep into the triangle after a breakout suggests a false move.
Target (measured move). Measure the height at the triangle’s widest point and project it from the breakout level.
Worked example: an ETF coils between a high of $70 and a low of $44 at the start of the triangle, a height of $26. Price breaks above the upper line at $58. The measured-move target is $58 + $26 = $84. With a stop below the last higher low at $52, the risk is $6 against a potential $26, more than 4:1 on paper. That kind of ratio is a reminder that the full target is optimistic, and many traders plan a partial exit at prior highs. Use the risk/reward calculator and the position size calculator to plan the trade.
Confirmation: volume, RSI, sentiment
- Volume. Volume normally fades during the coil. A clear jump on the breakout candle helps distinguish a real break from a probe.
- RSI. An RSI that breaks out of its own contracting range alongside price adds weight. An RSI that diverges from the break suggests caution.
- Sentiment. A quiet, undecided crowd is typical inside a triangle. A sudden shift in tone that matches the breakout direction is supporting context.
Common mistakes
- Guessing the direction. Positioning before the break turns a neutral pattern into a coin flip.
- Fakeouts at the edges. Intrabar pokes outside the lines that close back inside are not breakouts.
- Waiting too long. Breaks very close to the apex often fizzle.
- Stops too tight. A stop just inside the broken line is easily hit by a retest.
- Confusing it with a wedge. If both lines slope the same way, you are looking at a rising wedge or a falling wedge, which carry their own bias.
Pattern statistics caveat
Symmetrical triangles are common and their outcomes are mixed by nature, so any quoted directional success rate should be treated with caution. Results vary with market, timeframe and how the trendlines are drawn. Their main value is defining a clear level where the balance breaks. Compare with the ascending triangle and descending triangle, which have a flat side and a built-in lean.
Spot it automatically with SnapPulse
SnapPulse turns a photo or screenshot of a chart into a plan in about five seconds: the detected pattern with its bias and confidence percentage, key levels on the candles, an entry zone, stop, target and reward-to-risk ratio. Its Steelman card makes the case for the opposite breakout, which is especially useful on a neutral pattern. Download SnapPulse to try it.
Educational content — not financial advice.
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