Head and Shoulders — Trading Wiki

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What Head and Shoulders means

A head and shoulders pattern has three peaks, with a higher central peak and two lower shoulders. A neckline connects the intervening lows; breaking it is a chart observation, not a confirmed future decline or guaranteed target.

In depth

The head and shoulders pattern is a commonly described reversal formation in technical analysis. It consists of three distinct peaks: a left shoulder, a higher central peak (the head), and a right shoulder that is approximately equal in height to the left shoulder. The troughs between these peaks are connected by a line called the neckline, and a break below this neckline completes the conventional pattern description; continued decline is a hypothesis that can fail. The psychology behind the formation tells a story of changing market sentiment across five phases.

Phase one: the market trends upward and creates the left shoulder, a normal swing high. Phase two: a pullback creates the first neckline touch. Phase three: renewed buying pushes price to a higher high (the head), suggesting the uptrend is accelerating. Phase four: another pullback returns to the neckline area, and bulls attempt one more push higher. Phase five: the rally fails to reach the head's height, forming the right shoulder — a critical sign that buying enthusiasm is waning. The measured move technique provides a price target: measure the vertical distance from the head to the neckline, then subtract that distance from the neckline breakout point.

Volume adds a separate historical observation; it does not validate a forecast. Ideally, volume is highest during the left shoulder's formation, decreases during the head, and is lowest during the right shoulder — showing diminishing participation in each successive rally. The neckline break should occur on increasing volume. Volume alone does not establish the probability that a neckline break will persist. The inverse pattern uses three troughs rather than peaks and is commonly interpreted as a bullish hypothesis, which can fail.

Key points

• Three peaks: left shoulder, head (highest), right shoulder
• A neckline break describes the chart; a measured target is a projection, not a guaranteed outcome
• The inverse shape can occur without a lasting upward reversal

Why it matters when you are learning

Draw the three peaks and neckline, then distinguish the pattern's measured-move convention from the actual later price. A projected target is a hypothesis rather than an expected payout.

Worked exercise and its limits

Mark three hypothetical peaks at $50, $55 and $51 with intervening lows near $46. If you project the $9 head-to-neckline height below $46, the arithmetic target is $37. It is a projection that price need not reach.