Chart Patterns Explained: Head and Shoulders, Triangles, Flags
If you have ever stared at a price chart and wondered whether that wobble means something, or whether you are just seeing shapes in the clouds, you are asking the right question. Chart patterns are one of the oldest tools in technical analysis, and they can genuinely sharpen how you read price. But they are a way of organizing what buyers and sellers are doing, not a crystal ball. This guide walks through the major chart patterns, the psychology behind each, how to measure a target, where a stop tends to go, and the honest truth about how often they fail.
What are chart patterns?
Chart patterns are recognizable shapes that price traces out on a chart, formed by the repeated tug-of-war between buyers and sellers. Each pattern is really a snapshot of crowd behavior, accumulation, hesitation, exhaustion, or a pause before continuation, drawn in highs and lows over time.
Traders sort patterns into two broad families:
- Reversal patterns suggest the prevailing trend may be running out of fuel and could turn (for example, head and shoulders, double tops and bottoms).
- Continuation patterns suggest the trend has paused to catch its breath and may resume in the same direction (for example, flags, pennants, and most triangles).
The key word is may. A pattern can raise or lower the odds of a particular move, but it never settles them. No pattern works every time, and reading them well is a skill you build, not a rule you memorize. If you are still getting comfortable with the basics of reading price, our beginner's tutorial on reading forex charts is a good companion to this article.
Head and shoulders: the classic reversal
A head and shoulders is a reversal pattern that forms at the top of an uptrend. It has three peaks: a left shoulder, a higher head in the middle, and a right shoulder roughly level with the left. A line connecting the two lows between the peaks is the neckline.
The psychology: the first peak is normal trend behavior. The head is one last surge that fails to hold. When the right shoulder makes a lower high, it suggests buyers may no longer have the strength to push to new highs, hinting that momentum is fading. A close below the neckline is the moment many traders read as confirmation that control has shifted toward sellers.
- Measuring a target: take the vertical distance from the top of the head down to the neckline, then project that same distance downward from where price breaks the neckline. If the head sits at 1.2000 and the neckline at 1.1900, the height is 100 pips, giving a rough target near 1.1800.
- Where a stop often goes: just above the right shoulder. If price climbs back above it, the reasoning behind the pattern is broken.
An inverse head and shoulders is the same shape flipped upside down at the bottom of a downtrend, suggesting a possible turn higher. The measuring and stop logic mirror exactly.
Double tops and double bottoms
A double top looks like the letter M: price rallies to a high, pulls back, rallies again to roughly the same high, and fails to break through. A double bottom is the mirror image, a W shape at the bottom of a downtrend.
The psychology: the second failure to break a level tells you the buyers (in a top) ran into the same wall twice and could not get through. That repeated rejection at a clear level is why double tops and bottoms tie so closely to support and resistance. The pattern is essentially a level being tested and holding.
- Confirmation: many traders wait for price to break the middle valley (in a top) or middle peak (in a bottom) before treating it as valid.
- Measuring a target: take the height from the peaks down to the middle valley and project it below the breakout point.
- Where a stop often goes: above the double top's highs, or below the double bottom's lows.
A common trap: not every two-peak wobble is a double top. The two peaks should be reasonably separated in time, and price should clearly reject the level rather than just drift sideways.
Triangles: ascending, descending, symmetrical
Triangles form as price coils into a tightening range, with the highs and lows converging. They are usually continuation patterns, but the direction of the breakout matters more than the label.
- Ascending triangle: a flat horizontal resistance line on top, with rising lows underneath. Buyers keep stepping in higher while sellers defend one ceiling, often read as a sign buyers may be gaining the upper hand.
- Descending triangle: a flat support line on the bottom, with falling highs above. The mirror image, often read as sellers pressing.
- Symmetrical triangle: both lines converge toward each other. This one is more neutral; it shows compression and indecision, and the breakout can go either way.
The psychology: a triangle is a market squeezing. Volatility contracts as buyers and sellers reach a temporary truce, and the eventual breakout releases that stored energy.
- Measuring a target: take the height of the triangle at its widest (the base) and project it from the breakout point.
- Where a stop often goes: on the opposite side of the triangle from your entry, so a move back inside the range invalidates the trade.
Be careful with false breakouts. Price often pokes through one side, traps traders, then reverses. Some traders wait for a candle to close beyond the line, or for price to retest the broken line and hold, before acting.
Flags and pennants: the pause in a fast move
Flags and pennants are short-term continuation patterns that appear after a sharp, near-vertical move (the flagpole).
- A flag is a small rectangular channel that drifts gently against the prior move, a brief, orderly pullback.
- A pennant is a tiny symmetrical triangle that forms right after the spike.
The psychology: after a powerful surge, some traders take profit and the move pauses. But if the underlying pressure is still there, the consolidation tends to be shallow and brief; the crowd is catching its breath, not reversing. These patterns often resolve quickly.
- Measuring a target: flags and pennants are often measured by the length of the flagpole, projected from the breakout point. If the pole ran 80 pips, the projected continuation is roughly another 80 pips.
- Where a stop often goes: on the far side of the flag or pennant, below the consolidation for a bullish setup.
A flag that drifts too far against the trend, or consolidates too long, starts to lose its meaning; at some point a pause becomes an actual reversal.
Wedges: rising and falling
A wedge looks like a triangle, but both trendlines slope in the same direction.
- A rising wedge has both lines sloping up, but the lows rise faster than the highs, so the range narrows. In an uptrend it is often read as a fading, exhausted move that may turn down.
- A falling wedge has both lines sloping down, with the highs falling faster than the lows. In a downtrend it is often read as selling pressure drying up, hinting at a possible turn higher.
The psychology: the narrowing slope shows that each new push has less force than the last. The trend is technically still going, but it appears to be losing conviction.
- Measuring a target: a common approach projects the height of the wedge at its widest from the breakout point.
- Where a stop often goes: just beyond the opposite side of the wedge.
Wedges can act as either reversal or continuation patterns depending on context, which is exactly why reading the surrounding trend matters more than the shape alone.
Cup and handle
A cup and handle is a bullish continuation pattern that resembles a tea cup: a rounded, U-shaped recovery (the cup) followed by a small, shallow pullback (the handle) before price attempts to break higher.
The psychology: the rounded bottom shows a slow, patient transition from selling to buying, with no panic and no V-spike. The handle is a final shakeout of weak hands before a potential breakout above the cup's rim.
- Measuring a target: take the depth of the cup and project it up from the breakout above the rim.
- Where a stop often goes: below the handle's low.
A genuine cup is smooth and rounded; a sharp, jagged V is a different and less reliable shape. The handle should be shallow, because a deep handle suggests sellers are still firmly in control.
How to actually trade a pattern (the boring, important part)
Spotting the shape is the easy part. The discipline around it is what separates reading from gambling.
- Wait for confirmation. A pattern is a setup, not a trigger. Many traders wait for a candle close beyond the key line, or a retest that holds, rather than front-running the breakout.
- Define your stop first. Every pattern above has a natural invalidation point, the place where the story it tells is no longer true. Put your stop there before you enter, not after.
- Size the position to the stop, not the other way around. Decide how much of your account you are willing to risk on the idea (many educators suggest keeping risk per trade small), then let the stop distance dictate your position size. Our position sizing guide walks through the math, and the free risk and reward calculator does it instantly.
- Check the higher timeframe. A bullish pattern fighting a clear higher-timeframe downtrend is swimming upstream. Patterns tend to read more cleanly when they agree with the broader context.
- Use volume and structure as a second opinion. A breakout backed by expanding participation, near a meaningful level, is generally more convincing than one in the middle of nowhere.
This is also where solid risk management does the heavy lifting. A pattern only needs to be right often enough relative to its reward, and what happens when it is wrong is what determines whether you stay in the game.
How often do chart patterns fail?
Honestly, often enough that you must plan for it. There is no reliable, universal win-rate number for any pattern, because outcomes depend on the market, the timeframe, the exact definition you use, and your own execution. Anyone quoting a precise win rate as gospel is overselling.
What you can rely on:
- Every pattern fails sometimes. False breakouts and failed reversals are a normal cost of doing business, not evidence you did something wrong.
- A failed pattern can itself be a signal. A double top that fails and breaks up through resistance can produce a strong move, because the traders who shorted it may be trapped and forced to cover.
- Confirmation reduces, but never removes, the failure rate. Waiting costs you a slightly worse entry in exchange for filtering out some fakes.
The professional mindset is not this pattern will work. It is this pattern may shift the odds, my stop caps the damage when it does not, and my reward should justify the risk. That framing is also why many traders who blow up do so from poor risk control rather than poor pattern-spotting, a theme we dig into in why traders fail.
Common mistakes to avoid
- Forcing patterns that are not there. If you have to squint, it probably is not a clean setup. The market does not owe you a trade.
- Trading the shape and ignoring the context. A textbook pattern against the dominant trend is far weaker than the same pattern with it.
- No stop, or a stop placed for comfort instead of logic. Your stop belongs at the price that proves the pattern wrong, not at a round number that feels safe.
- Chasing the breakout. Entering after a big breakout candle often means an awkward risk-to-reward and a stop that is too far away.
- Treating measured targets as promises. A target is a reasonable projection, not a magnet. Price owes it nothing.
Key takeaways
- Chart patterns describe crowd psychology, accumulation, exhaustion, and pauses, drawn in price.
- Reversal patterns (head and shoulders, double tops and bottoms) hint a trend may turn; continuation patterns (flags, pennants, most triangles) hint it may resume.
- Each pattern has a logical measured target and a natural stop where the idea is invalidated. Use both.
- Patterns fail regularly. Any edge comes from confirmation, context, and disciplined risk control, not from the shape alone.
- This is education, not financial advice. Most retail traders lose money, so treat every pattern as probabilities, never certainties, and never risk money you cannot afford to lose.
The fastest way to get sharper at this is not reading more, it is seeing hundreds of real charts until clean patterns jump out and messy ones stop fooling you. That is exactly what the Pattern Hunter mini-game on Pip Campus is built for: it drills your eye on real chart structures and gives you instant feedback, and it is free on the Explorer tier, no card needed. Train your pattern recognition, then bring a sharper eye to the charts.