How to Trade a Head and Shoulders
To trade a head and shoulders, draw the neckline through the two troughs either side of the head and wait for a close beyond it. The neckline is frequently sloped rather than horizontal, and its angle changes both the entry price and the measured target.
A head and shoulders is three peaks with the middle one highest, and a neckline drawn through the two troughs beside it. It is a reversal pattern, and the neckline — not the shape of the peaks — is the part that decides everything you actually do.
Before you start
A prior trend, because the pattern claims to reverse something. Three peaks in a range is not a reversal; it is a range with three peaks in it.
The neckline drawn through both troughs, which is often sloped rather than flat. Connecting the two lows is the rule, and the resulting line is rarely horizontal.
A rule for how symmetrical the shoulders have to be, written as a number. Within some percentage of each other in height, and roughly comparable in width.
The steps
1. Confirm the prior trend
Higher highs into the left shoulder. Without that context the three-peak shape is a description rather than a signal.
2. Identify the three peaks by rule
Left shoulder, higher head, right shoulder. The outer two should be within your stated tolerance of each other; if they are not, this is a different shape.
3. Draw the neckline through both troughs
Connect the low after the left shoulder to the low after the head. That is the neckline, sloped or not, and it is where the pattern completes.
4. Wait for a close beyond the neckline
A close below the neckline for a standard head and shoulders. Entering at the right shoulder is trading a hypothesis, and at that moment it is equally consistent with continuation.
5. Measure from the head to the neckline
The vertical distance from the head down to the neckline directly beneath it, projected from the break point. With a sloped neckline that break point moves, which moves the target.
6. Put the stop above the right shoulder
Not just above the neckline. Price returning above the right shoulder invalidates the reversal, and that distance is what sets the position size.
7. Record the candidates that never broke
Three-peak shapes that never broke their neckline are candidates that did not become patterns. Nobody publishes those, which is why every illustrated example looks decisive.
How to tell it worked
A prior trend was present, verified rather than assumed.
The neckline was drawn through 2 troughs, not fitted horizontally to one.
The shoulders differ by less than your stated tolerance, measured rather than eyeballed.
And 0 trades were taken at the right shoulder, every entry coming on a close beyond the neckline.
Why the slope matters so much
A descending neckline delays the break and lowers the entry. You get in later and further down, and the measured target moves down with it, so the whole trade shifts.
An ascending neckline does the opposite and is generally considered the weaker version, because price has to fall further from the head before the pattern completes at all.
The inverse version
An inverse head and shoulders is the same structure upside down: three troughs with the middle one lowest, a neckline through the two peaks, and completion on a close above it.
Everything above applies with the signs reversed, including the requirement for a prior trend — a downtrend, in this case — and the stop below the right shoulder.
The one difference worth knowing is the base rate. On this site’s shared series 54% of 566 ten-bar windows finished higher, which mildly favours the inverse version’s direction and mildly works against the standard one.
What the retest is, and whether to wait for it
Price often returns to the neckline after breaking it. From below, in the standard version, testing the level it just fell through before continuing.
Waiting for that retest gives a better entry and a tighter stop. The stop can sit just above the neckline rather than above the right shoulder, which shrinks the risk distance and allows a larger position at the same amount at risk.
The cost is that the retest does not always come. Some breaks run without looking back, and a rule that requires a retest will miss those entirely — including, by construction, the fastest and most decisive ones.
Which is why the choice has to be made in advance and stated. Take the break, or wait for the retest, and accept the trade-off that goes with it. Deciding in the moment means taking the break when it looks strong and waiting when it looks weak, which is not a rule at all.
The original data
Of the 24,971 unique videos in research/search-study-corpus.jsonl, 45 mention this pattern in the
title, at a median of 3,907 views across 41 channels, and 51% of those titles are instruction-shaped.
Double tops appear in 53 at 12,299 and cup and handle in 41 at 3,390. The counts come from
site/corpus_count.py.
45 videos at 3,907 against 53 at 12,299 for the two-peak pattern. Similar coverage and a third of the audience per video — the more complicated shape reaches fewer people, which holds across every group of patterns measured here.
The answer to the question on that chart is that your tolerance already decided. Shoulders are rarely identical and some asymmetry is normal — the question is whether this one is inside the number you wrote down, and if you did not write one, you are deciding by how much you want the trade.
When it fails
The failure is the horizontal neckline drawn through whichever trough suits, and it changes the whole trade. Fitted to the lower of the two lows it produces a later entry and a smaller target; fitted to the higher one it produces an earlier entry and a larger target. Both look like a neckline on a chart. The rule is two points, one line — and abandoning it means the entry, the stop distance and the target were all chosen by preference while appearing to come from the pattern.
The second failure is entering at the right shoulder. The pattern is not complete.
A third is no prior trend. There is nothing being reversed.
A fourth is a stop at the neckline. The pattern fails above the shoulder.
A fifth is no symmetry tolerance. Any three peaks then qualify.
And a sixth is treating the projection as a forecast. It is a convention.
Related
Head and shoulders covers the pattern itself. Inverse head and shoulders is the same structure upside down. And measured move is where the target convention comes from.
The slope of the neckline is the detail that took me longest. Drawn horizontally through the lower trough it produces one entry and one target; drawn correctly through both troughs it produces different numbers for each. Two people looking at the same pattern can reach genuinely different trades, and only one of them drew it by the rule.
— Michael Whitman
This page is educational, not financial advice. Test every idea on your own charts before risking money.