Symmetrical Triangle Chart Pattern

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Symmetrical Triangle Definition

A symmetrical triangle is the most common triangle chart pattern. It is comprised of price fluctuations where each swing high or swing low is smaller than its predecessor. This coiling price movement creates a structure of a symmetrical triangle. As a symmetrical triangle is forming, trading activity diminishes along the way until the apex of the triangle is reached.

Many technicians believe that if a stock is rallying prior to a symmetrical triangle, the stock will eventually breakout to the upside. Conversely if a stock is falling prior to a symmetrical triangle forming, the stock should continue lower. Both of these assumptions are wrong. Symmetrical triangles provide little, if any indication as to which direction the stock will ultimately breakout. Remember from the above definition, there is a lack of volume and price movement which creates a coiling pattern, therefore it is simply impossible to assess which way a symmetrical triangle will inevitably breakout.

Symmetrical Triangle Breakout

There are two key components to a symmetrical triangle breakout: price and volume. For a breakout to the upside, you want the stock to close decisively outside of the triangle formation with a pickup in volume. Breakouts to the downside also require a decisive price break of the formation, but the volume does not need to display a significant increase in activity. If you notice a pickup in volume on a breakdown, odds are it is a false signal and the stock will likely reverse to the upside.

Symmetrical Triangle Breakout Chart Example


Symmetrical Triangle

Alton Hill

Alton Hill

I am the co-founder of and an IT professional that specializes in large scale Systems Integration projects. I have actively traded the markets since 2000 and believe that true trading mastery comes from practice. When I'm not working on a new trading strategy, I enjoy spending time with my wife and kids.
Alton Hill


  1. note the volume prior to it forming

  2. Yeah, this is the most common stocks pattern so it is a must to know so can be utilize in our stocks trading venture. 

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