Head and Shoulders: How It Forms and Where It Breaks
Three peaks with the middle one highest, joined by a neckline through their bases. The most recognisable figure in technical analysis and simultaneously the most vulnerable to convenient drawing.
How the figure is built
The left shoulder is a peak in an uptrend followed by a pullback. The head is a new, higher peak and another pullback to roughly the same level. The right shoulder is an attempt to set a new high that fails, staying below the head. The bases of the two pullbacks are joined by a neckline, and it need not be horizontal — a sloping neckline is more common.
What happens inside the figure
The pattern describes a trend fading through structure. The head is the last successful push; the right shoulder is the first failed one. In terms of market structure this is the transition from a sequence of higher highs to the first high that is not exceeded. That is why the figure reads as meaningful rather than decorative: it records the moment buyers stopped coping.
Entry, stop and target
The classic entry is on the neckline break with the stop behind the right shoulder. The target is measured as the distance from head to neckline, projected down from the break. This is the one figure where the target is set geometrically, and it should be treated as an orientation rather than a promise: the measured distance describes the previous move, not where price is obliged to go.
Where the figure breaks
The main problem is drawing it in hindsight. On a completed chart head and shoulders appear everywhere, because three consecutive peaks are common. In real time the right shoulder is indistinguishable from an ordinary pullback until structure breaks. The second problem is a false neckline break: price exits, collects stops and returns. Entering on a close beyond the neckline is therefore safer than entering on a touch.
We deliberately publish no measurement for this figure. Its marking cannot be formalised unambiguously, and any detection algorithm would reflect our arbitrary thresholds rather than a property of the market. Where the definition is strict — as with the inside bar or engulfing — we test the pattern on data and publish the result. Here it is more honest to say there is nothing to test.
This material is educational and is not individual investment advice. Trading forex carries the risk of losing capital.
Frequently asked questions
Does the neckline have to be horizontal?
No. A sloping neckline is more common than a horizontal one and does not invalidate the figure. What matters is that both bases form one line and that the right shoulder failed to exceed the head.
How do I tell a real figure from an imagined one?
By structure rather than shape. A genuine head and shoulders means a break in the sequence of rising extremes. If the structure is intact, three peaks on a chart are just three peaks.
Does the inverse head and shoulders work?
The logic mirrors: three troughs with the middle deepest, a reversal upward instead of downward. All the same caveats apply, including hindsight drawing and false neckline breaks.
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