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Technical analysis

Double top · double bottom

Two similar extremes in a row. «Similar» is a tolerance, and the tolerance decides how many exist.

In the chapter

XChart patterns

A shape does not need a market to show up

From the same chapter

Head and shouldersThree highs with the middle one higher. How much higher, and how far apart the shoulders may sit, the pattern does not say: you set it.
Measured moveProjecting the height of the pattern from the break. It is an ATR by another name: it measures recent volatility, not intent.