Construct a head-and-shoulders before the neckline break

Build the sketch before the signal

A head-and-shoulders is a three-peak reversal sketch in which a central head stands beyond two flanking shoulders. The intervening troughs define a neckline that later becomes the breakout boundary.

The historical workflow does not start at the pierce. It starts by assembling the three-swing geometry on one chart scale, then asking whether volume supports a weakening right shoulder.

Lock the three-swing geometry

A head-and-shoulders top is assembled after an extended advance: a left-shoulder peak, a higher head, and a right-shoulder peak that does not reach the head. The two intervening troughs are usually near the same level, though wide variation is allowed.

The trough between the head and the right shoulder of a top must sit below the left-shoulder peak. The neckline is the line that joins those two troughs, and it may slope either up or down.

The same three-swing geometry can be drawn on weekly as well as daily scales. A weekly view can make a generally symmetrical head-and-shoulders easier to identify.

Fade volume into the right shoulder

Volume is typically heaviest while the left shoulder is built, still high on the head, and significantly lower on the right shoulder than on either earlier swing.

Volume-confirmation asks whether participation is heavier on the left shoulder or head than on the right shoulder, so the later swing is treated as weakening rather than a fresh impulse.

Wait for the neckline pierce

Breakout is the first close or decisive move through the neckline that converts the completed pattern into a directional hypothesis and a minimum measured target.

The measure line is the vertical distance from the head extreme to the neckline. After prices pierce the neckline, that height is subtracted from a downward pierce, or added to an upward pierce, to estimate a minimum post-breakout excursion. If a steep neckline makes that arithmetic misleading, the same height can be applied from the lower shoulder trough instead.

A formation that looks like a head-and-shoulders can still be treated as a consolidation rather than a reversal when price does not confirm a durable breakdown, even if volume was heavier on the head than on the left shoulder.

Keep complex variants on the same checklist

A complex head-and-shoulders adds extra heads or extra shoulders. As those pieces accumulate, left-right symmetry around the largest central head becomes more pronounced.

A checklist construction of the pattern requires a largest central head, high volume on the left shoulder or head relative to recent rallies, and a volume drop on the right shoulder before judging whether a downside breakout is large enough to act on.