Chart Pattern

Technical Analysis

A chart pattern is a recognizable formation in price action, such as a triangle or head-and-shoulders, used to anticipate continuation or reversal.

What is a chart pattern?

A chart pattern is a recurring shape or structure that forms in price action over time, which technical analysts use to anticipate what the market might do next. Chart patterns are generally grouped into two broad categories:

Reversal patterns — suggest the current trend is likely to change direction, such as head and shoulders or double tops/bottoms.
Continuation patterns — suggest a pause before the existing trend resumes, such as flags, pennants, triangles, and rectangles.

Why chart patterns form

Chart patterns are essentially visual snapshots of the ongoing tug-of-war between buyers and sellers. A triangle, for example, shows price coiling into a narrower and narrower range as buyers and sellers reach a temporary standoff, often followed by a sharp breakout in the direction the market eventually chooses. A head-and-shoulders pattern reflects buyers making one final push (the “head”) that fails to sustain itself above the prior high (the “shoulders”), hinting that demand is running out.

Example

Imagine EUR/USD trades in a tightening range between a falling upper trendline and a flat lower support line over several weeks — a classic descending triangle. If price eventually breaks below the flat support with increased volume, that is typically read as a bearish continuation signal, and traders might look for a short entry on the confirmed break.

Confirming a pattern

Most experienced technical analysts wait for confirmation before acting on a pattern — such as a decisive close beyond a neckline or trendline, ideally accompanied by rising trading volume — rather than assuming a pattern is complete the moment it starts to take shape. Many patterns that look promising fail to complete or produce a false breakout.

Why it matters

Chart patterns give traders a structured way to frame potential trend changes or continuations, and they often come with a built-in method for estimating a price target (for example, projecting the height of a head-and-shoulders pattern down from the neckline). No pattern guarantees an outcome, however — they describe probabilities, not certainties, so they should always be combined with sound risk management.