Head & Shoulders Pattern

The Head & Shoulders is a chart pattern made up of three peaks. The middle peak (the "head") is the highest, and the two peaks on either side (the "shoulders") are lower and roughly similar in height. A line drawn across the lows between these peaks is called the "neckline."

The pattern most commonly appears after a sustained move higher, which is why traders often discuss it in the context of a possible trend change. There is also an "inverse" version, which looks like the same shape flipped upside down (two troughs around a lower middle trough), and traders study it after a sustained move lower.

Important framing: a Head & Shoulders is a visual description of past price action. It is a way of organising what has already happened on the chart. It is not a forecast, and its appearance does not guarantee what price will do next.

Traders generally look for these components in sequence:

1. A prior trend. The standard pattern is usually discussed after an established uptrend.
2. Left shoulder. Price rises to a peak, then pulls back.
3. Head. Price rises again to a higher peak than the left shoulder, then pulls back.
4. Right shoulder. Price rises a third time but peaks lower than the head, often around the level of the left shoulder, then pulls back.
5. Neckline. A line connecting the two pullback lows (the lows on either side of the head).

In practice, real charts are messy. Shoulders are rarely identical in height, the neckline is often sloped rather than flat, and the spacing between peaks varies. Because identification involves judgement, two people can look at the same chart and disagree about whether a valid pattern is present. This subjectivity is one reason traders treat the pattern as one piece of context rather than a precise rule.

Traders often read a completed Head & Shoulders as a sign that buying pressure may be weakening: each attempt to push higher (head, then right shoulder) fails to make a new high, which some interpret as momentum fading.

The neckline is the level many traders watch most closely. A move where price closes below the neckline (or above it, for the inverse pattern) is frequently described as the point at which the pattern is "confirmed." Until that happens, many traders consider the pattern incomplete or unconfirmed, because price can move back into the shape without ever breaking the neckline.

Some traders also estimate a "measured move" by taking the vertical distance from the head to the neckline and projecting it from the breakout point. Treat this purely as one common convention for thinking about scale, not as a target that price is obliged to reach. Price frequently does something other than the textbook outcome.

None of these interpretations are predictive. They are ways traders describe and reason about price behaviour, and any of them can fail to play out.

A few realities worth keeping in mind:

• False breaks happen. Price can dip below the neckline and then recover back above it, which traders call a failed or false break. A pattern that "looked" complete can simply not follow through.
• Hindsight bias. Patterns are far easier to spot after the fact. In real time, you usually cannot know whether the right shoulder is forming until later.
• Subjectivity. Because there is no single agreed definition of "valid," the same chart can be read differently by different traders.
• Timeframe sensitivity. A clear pattern on one timeframe may not exist on another, and conclusions drawn from a very short timeframe can be especially noisy.

A pattern is context, not a decision. Traders typically consider it alongside other information and their own risk management. It does not remove uncertainty, and it does not change the fact that any trade can lose money.

The snippet below is a minimal Pine v6 indicator that detects swing pivots using ta.pivothigh and ta.pivotlow and plots them, so you can mark candidate shoulders, heads, and neckline lows yourself. It does not detect the full pattern, does not produce signals, and is for educational illustration only.

//@version=6
indicator("Swing Pivots (manual H&S marking)", overlay = true)

left  = input.int(5, "Pivot left bars",  minval = 1)
right = input.int(5, "Pivot right bars", minval = 1)

ph = ta.pivothigh(high, left, right)
pl = ta.pivotlow(low,  left, right)

plotshape(not na(ph), title = "Swing high", style = shape.triangledown, location = location.abovebar, size = size.tiny)
plotshape(not na(pl), title = "Swing low",  style = shape.triangleup,   location = location.belowbar, size = size.tiny)

How to use it: the down triangles mark recent swing highs (candidate left shoulder, head, right shoulder) and the up triangles mark the swing lows you could connect to sketch a neckline. Because pivots are confirmed only after right bars have passed, the markers appear with a built-in lag — another reminder that pattern recognition is backward-looking. This tool labels structure; it makes no claim about what price will do, and trading carries a risk of loss.