The head and shoulders is a reversal pattern: a peak (left shoulder), a higher peak (head), a lower peak (right shoulder), all sitting on a support line called the neckline. When price breaks below the neckline, the pattern is said to signal a top - a shift from uptrend to downtrend. An inverted version marks bottoms.

Why the neckline matters

The neckline is the support that held through the pattern. The right shoulder failing to make a new high shows buyers weakening; the neckline break confirms sellers have taken control. Until that break happens on volume, it is just three bumps - the pattern isn't "complete."

Volume and confirmation

Textbook head and shoulders shows declining volume into the head and right shoulder, then a volume expansion on the neckline break. Without that confirmation, the "pattern" often fails - price reclaims the neckline and traps the shorts who jumped early. Confirmation, not recognition, is what makes it tradable.

Seeing the pattern is easy. Waiting for it to actually confirm is the hard part - and the profitable one.

The skeptic's note

Like Fibonacci levels, head and shoulders is partly self-fulfilling - enough traders watch the neckline that orders cluster there. But hindsight makes every top look like a head and shoulders. A systematic edge doesn't rely on spotting shapes; it relies on structure, flow, and confirmation. Treat the pattern as a place other traders are watching, not a crystal ball.