Pattern breakouts need a primary-trend filter

A completed pattern is a breakout hypothesis

A completed formation is treated as a breakout hypothesis. The first target is a measured-move: the depth of the finished outline, projected in the breakout direction. The same measuring idea is said to apply from daily charts to other time frames.

Head-and-shoulders is a multi-peak or multi-trough reversal outline whose neckline break is the completion signal and the starting point for that depth-based target. Double-top-bottom is a two-peak or two-trough reversal outline whose second failure and breakout play the same role.

Older ideas inside the outline

Pattern analysis is presented as a bundle of older technical ideas: successive peaks and troughs, trendline support and resistance, and the rule that a larger formation carries more weight than a smaller one.

Editorial reading: those ingredients are why a tidy silhouette is not the object of study. The object is a repeatable condition that can be measured after the break.

How the historical workflow measured reach

Head-and-shoulders and double tops and bottoms were scored after the fact across four equity sectors over 1982 to 2003. Each sector was first split into primary rising and falling periods.

Post-breakout price paths were measured in units of pattern-length, written as L, with observation extending to a maximum of 5L. A 50-day head-and-shoulders bottom is the worked example of L. Pattern-length is the time needed for a formation to complete, and it is the unit for how long after the breakout a measured-move is given to develop.

Among 1,748 bottom formations, the share of cases that met or exceeded the measured-move target was tabulated, including outcomes well above 100 percent of the projected distance.

Protrend and contratrend paths

A protrend-signal is a breakout that points the same way as the sector primary trend, such as a bullish completion in a rising market or a bearish completion in a falling market. A contratrend-signal points against that trend, such as a bullish completion during a declining market.

Aligned signals more often reached their targets and typically traveled farther than opposing signals. That gap was shown for both bullish bottoms and bearish sells, and it was illustrated with 496 bottoms taken against a declining primary trend.

A neat outline is not enough

A well-drawn head-and-shoulders outline is not treated as sufficient on its own. A slower trend-context reading, such as a long-term oscillator below zero and rising versus already bullish, is used to decide whether the same outline is more or less trustworthy.

What the archive does not claim

The source does not claim that every aligned breakout becomes profitable or that price advances in a straight line. It only argues that waiting up to 5L after aligned head-and-shoulders and double-bottom buys in a rising sector improves the chance of reaching the measured objective, while still leaving open which names stop near 100 percent and which exceed it.

Editorial reading: judge these formations by reach, waiting time, and trend context rather than by how neat the outline looks. Read the measured-move only after a primary-trend filter has sorted the breakout as a protrend-signal or a contratrend-signal.