Chart Patterns
Head and Shoulders Pattern: Rules, Target and Stop
The best-known reversal pattern in technical analysis, and the most over-identified. Three peaks, one neckline, and a measured target you can calculate exactly.
The head and shoulders is the most recognised pattern in technical analysis and, partly for that reason, the most over-identified. Three bumps on a chart is not a head and shoulders. What makes it meaningful is the specific order flow it describes.
What the pattern describes
Read it as three attempts by buyers, each weaker than the last.
- Left shoulder. The trend pushes to a new high on strong volume. Entirely healthy.
- First trough. A normal pullback. Buyers step back in.
- Head. A higher high, frequently on lower volume than the left shoulder. This is the first warning: the new high needed less buying to reach, meaning fewer participants were willing to chase it.
- Second trough. Price falls back to roughly the same level as the first. Those two troughs define the neckline.
- Right shoulder. Buyers try again and fail to reach the head. This is the tell. Demand could not produce a higher high.
- Neckline break. With buyers demonstrably exhausted, the floor gives way.
Identification rules
- A clear preceding uptrend. Without one there is nothing to reverse.
- Three peaks, the middle clearly the highest.
- Roughly comparable shoulders. They need not match exactly, but a “shoulder” barely above the neckline is not a shoulder.
- A neckline drawn through the two troughs. It may slope.
- Declining volume across the three peaks, ideally.
- A close below the neckline. An intraday poke through it does not count.
The inverse head and shoulders is the exact mirror at a bottom: three troughs, the middle lowest, breaking upward through the neckline. Everything below applies with the signs flipped.
Measuring the target
Target = Neckline − (Head − Neckline)
Using the chart above: the head peaks near $76, the neckline sits around $55. The height is $21, so the projection from a break at $55 is roughly $34.
Two qualifications matter more than the formula.
Check what is in the way. If real support sits at $48, that is your realistic first target regardless of the measured move. Structure beats arithmetic.
The target is an expectation, not an obligation. A meaningful share of patterns fall short. Take partial profit on the way rather than holding out for the full projection.
The trade
Entry is on the close below the neckline, or on the retest. Broken necklines frequently get tested from beneath, with support becoming resistance, and that retest usually offers better reward-to-risk than the break itself, because the stop sits much closer.
The stop goes above the right shoulder. That high was the last genuine attempt by buyers, so a move above it means the pattern has failed. A tighter alternative is the neckline itself.
Size from the stop distance, never from conviction. A head and shoulders on a $70 stock can carry an $8 stop. Run it through the position size calculator rather than estimating.
Why it fails
No preceding trend. Three bumps inside a range are three bumps.
Volume rising into the right shoulder. This contradicts the entire premise. The pattern describes exhaustion; expanding volume on the third attempt shows the opposite.
Identified after the fact. If you only see it once the neckline has already broken, you are describing history. Mark the neckline while the right shoulder is still forming.
The neckline simply holds. Textbook formations fail regularly. That is what the stop is for.
Next, compare this against double tops and bottoms, which describe similar exhaustion with a simpler structure, and read support and resistance. The neckline is a level, and everything that governs levels governs it.
Frequently asked questions
What is a head and shoulders pattern?
A reversal formation of three peaks, where the middle peak (the head) is higher than the two on either side (the shoulders). A line drawn under the two troughs is the neckline, and a close below it signals the reversal. The inverse version, with three troughs, signals a bottom.
How do you measure the head and shoulders target?
Measure vertically from the top of the head down to the neckline, then project that same distance down from the point where price broke the neckline. If the head is at $76 and the neckline at $55, the 21-point height projects to roughly $34 from a break at $55.
Where does the stop go?
Above the right shoulder for a topping pattern. That high is the last point at which buyers made a genuine attempt, so a move back above it means the thesis has failed. Traders wanting tighter risk use the neckline instead, accepting more whipsaw in exchange for a smaller stop.
What volume pattern confirms it?
Volume is usually heaviest on the left shoulder, lighter on the head, and lighter still on the right shoulder, showing declining participation on each successive attempt higher. It should then expand on the neckline break. Rising volume into the right shoulder argues against the pattern.
Does the neckline have to be horizontal?
No. It is drawn through the two troughs and frequently slopes. A downward-sloping neckline is generally read as more bearish, because it shows the lows deteriorating as well as the highs, while a steeply upward-sloping one weakens the signal.