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    SEBI Registered Research Analyst · INH000015297

    Ascending Triangle Pattern

    असेंडिंग ट्रायंगल पैटर्न

    An ascending triangle is a bullish pattern built from a flat horizontal resistance and a rising series of higher lows — buyers paying up on every pullback while sellers hold one fixed price, until that supply is finally cleared.

    By Rohit Singh (Mr. Chartist) · Updated 2026-08-25

    Bias
    Bullish
    Type
    Continuation
    Timeframes
    Daily and weekly. The pattern needs several months of higher lows pressing against one price to carry any weight, and the weekly chart is where the multi-year versions show up.
    Real examples
    2 published NSE setups

    An ascending triangle is one of the few chart patterns that describes an actual argument between two groups. Along the top is a horizontal line: one price that sellers keep defending, hit again and again and rejected every time. Along the bottom is a rising line: each pullback stops higher than the last, because buyers are no longer willing to wait for the old discount. The flat top with rising lows is the entire definition — if the ceiling slopes, it is a different pattern.

    That combination is why the pattern leans bullish before it resolves. A fixed supply level implies a finite quantity of stock for sale at that price; a rising floor implies demand that is growing more urgent. Every pullback that stops higher means the buyers are absorbing the ceiling from below. Eventually the supply at that price is used up and the level breaks — usually on a wide-bodied candle with a clear jump in volume, because the whole queue of waiting buyers now has nothing left to buy from.

    Textbook classification calls it a continuation pattern, and most of the time it is: it forms mid-uptrend as a pause before the trend resumes. But the same structure can also end a long decline. State Bank of India in ChartBook 280 spent roughly 1.3 years under a ceiling at ₹860–₹865 that had capped it since May 2024, building higher lows from March 2025 — accumulation underneath supply, in a stock that had gone nowhere for over a year. The mechanics are identical; only what came before it differs.

    How do you identify a ascending triangle?

    • A horizontal ceiling touched at least twice, and preferably three times or more, at roughly the same price. This is the defining feature — a sloping top is a wedge or a channel, not an ascending triangle.
    • A rising lower boundary connecting at least two higher lows. Each pullback must bottom above the previous one; a single equal or lower low breaks the read.
    • Genuine compression. The distance between the two lines should shrink candle by candle, with each pullback shallower and shorter-lived than the one before it. A wide, drifting range with a flat top is a rectangle, not a triangle.
    • Price touching both boundaries. If the rising line has only been grazed once, the triangle has been drawn onto the chart rather than formed by it.
    • A trend into the pattern. Classically an uptrend, which makes it a continuation. The long-downtrend variant is valid too — State Bank of India built its triangle across 1.3 years of going nowhere — but it must have context; a triangle in a vacuum is just a narrowing range.
    • A breakout that happens before price reaches the apex, ideally in the middle-to-late portion of the structure. A triangle that grinds all the way into the point has spent its energy, and breaks from the apex are unreliable in both directions.
    • A daily or weekly close above the flat top — a close, not a wick through it.

    What should volume be doing?

    • Volume should contract steadily as the triangle narrows. The pattern is a market running out of disagreement, and thinning activity into the apex is what that looks like.
    • Volume must expand sharply on the breakout. State Bank of India's break above ₹860–₹865 came on a wide-bodied bullish candle with a volume spike — that combination, a decisive body plus participation, is the confirmation. Without it the level has been poked, not cleared.
    • Volume on the pullback into the retest should be visibly lighter than on the breakout candle. Heavy selling volume back into the triangle is a failed breakout, not a retest.

    How is the ascending triangle target calculated?

    Measure the height of the triangle at its widest point — from the horizontal resistance straight down to where the rising lower trendline begins — and project that same distance upward from the breakout level. That is the measured move, and it is what the structure is worth, not a price forecast.

    Worked from a real published setup

    State Bank of India, published in ChartBook 280: the flat top that had capped price since May 2024 sat at ₹860–₹865, and that is the level the height is measured down from and projected up from. The edition published ₹900–₹920 as the measured breakout projection based on the triangle's height, with ₹875 as the first objective on the way. The anchor low itself was not restated in print — so measure it on your own chart from the first higher low the rising trendline actually connects, rather than reverse-engineering it from the published target.

    What invalidates the pattern?

    • A close below the rising lower trendline. The higher lows were the demand side of the argument; once one fails, the pattern is void whether or not the flat top ever got tested again.
    • A close back below the flat top after breaking out. That level was resistance for the entire life of the triangle and turns straight back into overhead supply — this is why the retest is watched so closely rather than assumed.
    • A downside break. An ascending triangle is a bullish-leaning pattern, not a bullish guarantee; if the rising lows give way first, the flat top above becomes a lid and the resolution is bearish. Trade the break, not the bias.
    • Price grinding into the apex without resolving. Treat a triangle that reaches its point as expired and stop trading it — the compression that gave the breakout its force has already been released sideways.
    • A breakout on volume no better than the recent average that fades back inside the triangle within a few candles. Treat that as a failed breakout in its own right.

    Why does a flat top with rising lows favour the buyers?

    A horizontal ceiling means there is a seller, or a group of them, working a fixed price. Every time the stock reaches it the same offers appear and price is turned away. That is a supply shelf, and a supply shelf is finite — it represents a quantity of stock, not an infinite willingness to sell.

    The rising lower boundary is the other half of the story. After each rejection, price falls less far than it did the previous time before buyers step in. They are refusing to wait for the old level. Compressed into one sentence: sellers are holding their price while buyers keep raising theirs, and the gap between them narrows candle by candle.

    There is only one way that ends. Either the supply at the ceiling is exhausted and price gaps through it — normally on a wide body and a volume spike, because the accumulated demand suddenly has nothing to buy from — or the buyers give up first and the rising lows break. The second outcome is real and happens, which is why the flat top is a bias and the breakout is the signal.

    • A flat ceiling represents a finite quantity of stock, not permanent resistance.
    • Higher lows mean buyers are raising their bid rather than waiting for the discount.
    • The pattern leans bullish; the close through the ceiling is what confirms it.

    Can an ascending triangle appear at the end of a downtrend?

    It can, and one of the two setups published in ChartBook 280 is exactly that case. An ascending triangle is classified as a continuation pattern because it most often forms as a pause inside an existing uptrend — price runs, stalls under a level, builds higher lows, and resumes. That is the textbook version and the one most traders look for.

    State Bank of India's structure was different in context but identical in mechanics. The ceiling at ₹860–₹865 had capped the stock since May 2024, so by the time the triangle completed, price had spent roughly 1.3 years going nowhere. The higher lows only began forming from March 2025. What that describes is accumulation underneath a supply level in a stock that had already stopped trending — and the resolution, when it came, was a wide-bodied bullish candle with a volume spike through the ceiling.

    The practical takeaway is that the classification matters less than the two lines. Whether you call it continuation or reversal, the trade is the same: the flat top is the trigger, the rising trendline is the invalidation, and the height of the structure is the measured move. Ruchira Papers on the weekly chart shows the same geometry stretched across eight years.

    • Most ascending triangles are continuations inside an uptrend.
    • The same structure can resolve a long stall or downtrend — State Bank of India ran 1.3 years.
    • The two boundary lines define the trade regardless of what preceded the pattern.

    Ascending Triangle on real NSE charts

    Each setup below was published in a ChartBook edition on the date shown, at the price it was marked at — entry, stop and target exactly as they went out. Nothing here is back-fitted, and the edition each came from is linked so you can check it.

    ChartBook 280 · 21 September 2025

    State Bank of India

    SBIN · Daily chart · 1.3 years to form

    Marked at₹862.35

    Broke above a horizontal resistance that had capped price since May 2024 near ₹860–₹865, completing a large ascending triangle. Higher lows since March 2025 against static resistance showed accumulation below supply. The breakout came on a wide-bodied bullish candle with a volume spike, and price is now retesting the breakout level.

    EntryOn bullish reversal near ₹850–₹855 zone (retest of breakout)
    StopBelow ₹830
    Target₹875 → ₹900 → ₹920
    Read the full edition this was published in
    ChartBook 280 · 21 September 2025

    Ruchira Papers Ltd.

    RUCHIRA · Weekly chart · 8 years to form

    Marked at₹170.03

    Strong breakout from a long-term ascending triangle, with ₹162–₹165 the breakout zone and the must-hold level for the structure.

    EntryClose above ₹165 with a follow-through candle
    StopBelow ₹150
    Target₹185 → ₹210 → ₹240
    Read the full edition this was published in

    What is often mistaken for a ascending triangle?

    Descending Triangle

    The mirror image and the bearish counterpart: a flat floor with a series of lower highs. There, buyers are defending one price while sellers keep accepting less, and the expected resolution is a breakdown through the floor rather than a breakout through a ceiling.

    Symmetrical Triangle

    Both boundaries slope toward each other — lower highs and higher lows at once. Neither side has a fixed price it is defending, so the pattern carries no directional bias at all and the direction is unknown until it breaks. An ascending triangle's flat top is precisely what supplies the bias.

    Rectangle / range

    A rectangle has a flat top AND a flat bottom, with no compression between them — price simply oscillates between two horizontal levels. The rising lows are what turn a rectangle into an ascending triangle, and they are the entire reason the pattern leans bullish rather than being neutral.

    Can you screen for the ascending triangle?

    Screeners detect consequences, not shapes — none of them can see two converging lines. Scan instead for the numeric footprint an ascending triangle leaves behind: price crossing above a six-month or one-year high on volume above its recent average, with the stock's high over the preceding few months barely changed while its low has risen. That last condition, a static high against a rising low, is the triangle expressed as numbers, and it is the part most Chartink-style screens leave out. The output is a candidate list; the flat top's touch count and the integrity of the rising trendline still have to be confirmed on the chart.

    How reliable is the ascending triangle?

    What moves the odds is how many times the flat top has been defended, how long the higher lows have been building, and whether the breakout carried a wide body and a volume spike — Ruchira Papers' eight-year weekly triangle and a six-week daily one are not comparable structures even though the shape is the same. Circulated win-rate percentages for triangles are among the most quoted numbers in technical analysis and among the least documented; almost none disclose their sample, market or timeframe, so no figure is given here. The practical caution is that a flat top does not guarantee an upside resolution, and the rising lower trendline is what tells you when that assumption has broken.

    Frequently asked questions

    Measure the triangle's height at its widest — from the horizontal resistance down to the start of the rising lower trendline — and project that distance up from the breakout level. In ChartBook 280, State Bank of India broke out of a ceiling at ₹860–₹865 and the edition published ₹900–₹920 as the measured breakout projection based on the triangle's height, with ₹875 as the first objective.

    Bullish-leaning. A flat ceiling against rising lows means a finite supply at one price being absorbed by buyers who keep raising their bid, which favours an upside resolution. It is a bias, not a certainty — if the rising lower trendline breaks first, the pattern resolves downward instead.

    It is classified as a continuation pattern and most commonly forms as a pause inside an uptrend. It can also resolve a long stall or downtrend: State Bank of India's triangle in ChartBook 280 built over roughly 1.3 years under a ceiling that had capped price since May 2024, with higher lows only appearing from March 2025.

    An ascending triangle has a flat top and a rising bottom, so one side is defending a fixed price and the other is paying up — that asymmetry is what creates the bullish bias. A symmetrical triangle has both lines converging, with lower highs and higher lows, and carries no directional bias until it actually breaks.

    Yes. The bullish bias comes from the structure, not from a rule, and if buyers stop defending the rising trendline the pattern fails there. A close below the rising lower boundary voids the setup, and the flat top above then acts as a lid. This is why the breakout, not the shape, is the trade trigger.

    At least twice to define the level, and three or more touches is materially stronger — each rejection at the same price is another confirmation that a real supply shelf sits there, and it makes the eventual break more meaningful. The rising lower boundary needs at least two higher lows for the same reason.

    It depends on the individual structure — the number of touches on the flat top, how long the higher lows have been building, and whether the breakout came with a wide body and a volume spike. Widely circulated win-rate figures for triangle patterns rarely disclose their sample, market or timeframe, so none is quoted here. Judge the eight-year weekly structure and the six-week daily one separately, even though they draw the same shape.

    Rohit Singh — Mr. Chartist

    Written By

    Rohit Singh

    Mr. Chartist

    With 14+ years of experience in Indian financial markets, Rohit Singh (Mr. Chartist) is a SEBI Registered Research Analyst, Amazon #1 bestselling author, and the founder of Investology — a premium trading ecosystem trusted by a 1.5 Lakh+ strong community across India.

    INH000015297Full Bio

    Educational content only. This page explains a chart pattern and cites setups previously published in the Weekend ChartBook; it is not investment advice and not a recommendation to buy or sell any security. Registration granted by SEBI, membership of BASL and certification from NISM in no way guarantee performance or assure returns. Markets carry risk — read all related documents carefully before investing.