Study the inverse head and shoulders as a defined sequence of swings, then record both confirmed and failed exits with the same rules.
Identify the swings and the boundary
An inverse head and shoulders has a deeper middle trough between two shallower shoulders. The rebounds on each side of the head define the neckline. Exact mirror symmetry is unnecessary. The higher right-hand trough changes the low structure, while the neckline controls confirmation.
Read the formation in its preceding trend
The conventional bullish reversal follows a decline. A higher right shoulder alone can still be a rally within that decline. Study whether price also regains the rebound highs. A sloping neckline requires the value of the line on the exit session.
Use an explicit confirmation rule
The worked chart closes above a horizontal neckline at 50. Measure the head-to-neckline height and add it to the boundary for a geometric objective. The objective is separate from subsequent resistance and from execution costs.
| Measure | Value |
|---|---|
| Confirmation session (first bar is session 1) | 47 |
| Boundary | 50.00 |
| Confirming close | 51.00 |
| Formation extreme | 40.00 |
| Formation height | 10.00 |
| Geometric objective | 60.00 |
Height = |40.00 − 50.00| = 10.00
Objective = 50.00 + 10.00 = 60.00The objective illustrates a measuring convention. It supplies no probability, expected return or evidence that a trade reaches that price. Keep the projected level separate from the actual chart observations and from a written risk plan.
Compare volume on the same daily basis
Compare each swing and the confirming session with this stock’s own daily volume. Quiet activity around a base and expansion on an exit are conventional context, but they do not establish direction or identify who traded. An event can dominate a single volume bar.
| Measure | Value |
|---|---|
| Confirmation volume | 220.00 |
| 20-session average including confirmation | 106.90 |
| Relative volume | 2.06× |
Including the current session in the average differs from dividing by the prior 20 sessions. An intraday comparison at the same clock time uses another denominator. State which one you use before comparing examples.
An exit that does not persist
The failure drawing briefly clears the neckline, falls back through it and breaks below the head. The developing base did not persist. Include failed neckline breaks when reviewing the formation rather than keeping only charts with a later rally.
Distinguish nearby formations
A triple bottom has lows at a similar level. A double bottom has two troughs. A rounding bottom changes direction gradually rather than around three pronounced swing lows.
Keep a reproducible research record
Apply the same swing definition and boundary rule to every chart in a sample. Formations become visible as later bars confirm swings, so preserve the date on which each observation was knowable.
- Record the preceding trend, candle interval, price scale and corporate-action basis.
- Label the swings and write a boundary rule before viewing the later path.
- Record the confirming close, subsequent retest and the price that invalidates the premise.
- Compare volume on a named denominator and retain failed exits as well as resolving examples.
- Review earnings and other events, execution costs and gap risk separately from the geometric drawing.
These formations are studied by reading charts. A list of stocks near a high or low does not identify this pattern.
Sources
- Edwards, Magee and Bassetti, Technical Analysis of Stock Trends, 11th edition: reversal formations and measurement conventions
- StockCharts ChartSchool: Inverse head and shoulders (checked October 1, 2026)
Read our data and methodology notes for calculation context. This guide explains research tools and observations. It does not recommend a trade or investment.