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Reversal

As explained in Investing for Programmers

A reversal pattern is a chart formation interpreted as indicating that an existing price trend may change direction.

A reversal pattern is a chart formation interpreted as a possible change in an existing price trend. It follows one trend before moving into its opposite direction, but the pattern remains a template rather than a prediction. section 10.1.2 section 10.4

Use reversal patterns as reference points, not guarantees:

  • A bearish double top begins with an uptrend, forms two peaks, and may precede a downtrend. section 10.1.2
  • A bullish form reverses a downtrend toward an uptrend; patterns can therefore have bearish and bullish versions. section 10.1.2
  • Related examples include head-and-shoulders, rising wedge, expanding triangle, triple top, and pennant patterns. section 10.1.2
  • Analysts may combine pattern interpretation with support, resistance, and breakout levels, while recognizing that traders frequently misjudge movements. section 10.1.2
Figure 10.10 The bearish double top is a pattern that, after an uptrend, has two peaks before it goes down again. If traders identify this pattern in time, they can sell or buy accordingly.
figure

Compare the two-peak bearish double top with its possible price decline after an uptrend. section 10.1.2

How Investing for Programmers covers it

How deep it goes
Defines reversal patterns through double-top examples and contrasts them with continuations, but stops short of reliable prediction or automation.
Examples
Uses bearish and bullish double tops, head-and-shoulders, rising wedges, expanding triangles, triple tops, and pennants.
What you can do after
Evaluate possible trend changes while treating chart patterns as uncertain historical templates rather than guarantees.
How it connects
Links reversals to continuation patterns, double tops, candlesticks, support and resistance, and breakouts.

Related concepts

This explainer was generated by Manning's knowledge graph from the text of Investing for Programmers. The section links point to the parts of the book it draws on.