Also known as: Rising triangle · Bullish triangle
An ascending triangle is a bullish continuation pattern made of a flat, horizontal resistance line and a rising support line formed by higher lows. As the two lines converge, buyers keep pressing against the same ceiling, and a decisive close above that resistance is the classic signal that the prior uptrend is resuming.
It is one of the most intuitive chart patterns to read: sellers hold a price, but buyers keep stepping in earlier on each dip.
What the pattern looks like
Price rallies into a resistance level and pulls back. The next rally stops at the same level, but the pullback ends higher than the first. This repeats, compressing price between the horizontal ceiling and a rising trendline. Eventually the supply at resistance is absorbed and price breaks out.
Ascending triangles most often appear as pauses within uptrends, but they can also form at the end of a downtrend as a bottoming pattern.
How to identify it
- Context. Ideally a prior uptrend, which makes the continuation read stronger.
- Flat resistance. At least two highs at roughly the same price.
- Rising support. At least two higher lows that can be joined by an upward-sloping line.
- Contraction. Swings get smaller as price approaches the apex.
- Volume. Typically declines while the triangle forms.
- Breakout. A candle closes above resistance, ideally on expanding volume.
Pay attention to where the triangle sits on the higher timeframe. An ascending triangle pressing against a major weekly resistance has more supply to absorb than one forming just above a fresh breakout. That context does not change the rules, but it helps set realistic expectations for the follow-through.
How to trade it
Entry. The usual trigger is a close above the flat resistance. A more patient entry is the retest: broken resistance often turns into support, and buying a successful hold there gives a tighter stop.
Stop. A logical invalidation is below the last higher low, or more conservatively below the rising support line. A close back inside the triangle shortly after the breakout is a warning sign.
Target (measured move). Take the height of the triangle at its widest point (from resistance to the first swing low) and add it to the breakout level.
Worked example: a stock repeatedly stalls at $62 while its lows rise from $48 to $57. The widest height is $62 − $48 = $14. After a close above $62, the measured-move target is $62 + $14 = $76. With a stop below the last higher low at $56.50, the risk on a $62.50 entry is $6 for a potential $13.50, about 2.25:1. Try your own figures in the risk/reward calculator and size the trade with the position size calculator.
Confirmation: volume, RSI, sentiment
- Volume. Contracting volume inside the triangle followed by a clear expansion on the breakout is the classic signature. A breakout on quiet volume is more suspect.
- RSI. A rising RSI that holds above its midline while price coils is consistent with building bullish pressure. A strong bearish divergence at resistance argues for caution.
- Sentiment. If attention is building around a well-known level, the breakout can attract momentum traders, but crowded breakouts can also fail fast. Use sentiment as a cross-check.
Common mistakes
- Buying inside the triangle. Until resistance breaks, the pattern can still resolve lower.
- Chasing intrabar breakouts. A spike above resistance that closes back below is a fakeout, not a breakout.
- Misdrawn lines. Forcing a support line through random lows produces false patterns. Use clear swing lows.
- Waiting into the apex. Breakouts very close to the apex often lack follow-through.
- Ignoring the larger trend. In a strong downtrend, ascending triangles break down more often.
Pattern statistics caveat
The ascending triangle is commonly described as having a bullish tendency, but it is not one-directional, and outcomes vary with the market, timeframe and conditions. Avoid relying on quoted success rates. Compare it with the descending triangle, the neutral symmetrical triangle and other continuation setups such as the bull flag.
Spot it automatically with SnapPulse
SnapPulse scans a photo or screenshot of a chart and, in about five seconds, highlights the detected pattern with its bias and confidence percentage, plots key support and resistance on the candles, and proposes an entry zone, stop, target and reward-to-risk ratio. It also calculates position size on your device from your balance, risk percentage and stop distance. Download SnapPulse to try it.
Educational content — not financial advice.
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