Technical analysis

Chart Patterns: Which Ones Are Really Worth Following

Astron Team · 09/24/2026 · 6 min read

Over decades of studying price behavior, some shapes have repeated often enough to earn their own name and become a reference among traders: chart patterns. They don't predict the future, but they describe recurring situations in which buyers and sellers seem to behave in a similar way, generating recognizable visual formations on the chart.

Knowing the main patterns helps organize your reading of the market, but the real value lies in understanding what each one suggests about the buy-sell fight, not just memorizing shapes.

Reversal patterns

These patterns usually appear at the end of a trend, signaling a possible direction change.

• Double top and double bottom: the price tests a region twice without breaking through, suggesting the previous move is losing strength.
• Head and shoulders: three peaks, with the middle one the highest, forming a classic bullish-to-bearish reversal pattern (the inverse also exists, bearish-to-bullish).
• Triple top and triple bottom: a variation of the double, with three breakout attempts before the reversal.

Continuation patterns

Unlike reversal patterns, these suggest a temporary pause before the original trend resumes.

• Triangles: formed by a progressive compression of the price, usually resolved with a move in the previous trend's direction.
• Flags and pennants: small consolidations after a strong move, like a pause before the price continues in the same direction.
• Rectangles: the price trades sideways between a support and resistance region, before breaking out to continue the trend or reverse.

How to confirm a pattern before trading

Visually identifying a pattern isn't enough — you need to wait for confirmation. In the case of a double top, for example, confirmation usually comes when the price breaks the low formed between the two tops, not just when the two tops look similar on the chart. Trading before this confirmation greatly increases the chance of entering a move that hasn't yet materialized.

A numerical example with a triangle

Imagine an asset in an uptrend that enters a consolidation triangle between R$ 80.00 (resistance) and R$ 76.00 (support), with that range narrowing over ten days. A trader following chart patterns waits for the breakout — say, above R$ 80.50, with the candle's close confirming the move's strength — to consider a buy. In this case, a reasonable stop would sit a bit below the triangle's top, for example at R$ 78.50, capping the risk at R$ 2.00 per unit, while the target can be projected from the triangle's own height (R$ 4.00) added to the breakout point, resulting in a goal close to R$ 84.50.

Common mistakes when using chart patterns

A frequent mistake is seeing patterns where they don't clearly exist — the so-called confirmation bias, when the trader forces an interpretation to justify a trade they already wanted to make. Another problem is ignoring the bigger trend context: a reversal pattern that appears in the middle of a very strong trend generally carries less weight than the same pattern formed after an already extended move.

How to incorporate chart patterns into your process

Chart patterns work best as part of a bigger process, which includes the asset's overall trend, trading volume, and already known support and resistance levels. Using them in isolation, without this context, tends to generate false signals often. Like any technical analysis tool, chart patterns organize probabilities, not certainties — and risk control on every trade remains essential, regardless of how clear the pattern looks on the chart.

How the chart's timeframe changes the pattern reading

The same chart pattern can appear across different time periods — on a chart of a few minutes, on a daily chart, or on a weekly chart — and each one's weight tends to differ. A head and shoulders formed over several weeks, on the daily chart, tends to carry more relevance and attract more market participants' attention than the same pattern formed in a few hours on a very short-term chart. That doesn't mean short-term patterns are useless, but the expected range of the resulting move tends to be proportional to the time taken to form the pattern.

A common practice among more experienced traders is checking the same asset across at least two different time periods before deciding: a bigger period to understand the trend's overall context, and a smaller one to fine-tune the exact entry point within the pattern identified on the broader chart. This combination reduces the chance of trading a pattern that, despite looking visually correct on the short-term chart, goes against the dominant move over a bigger time frame.