Third of Third (3rd of 3rd Wave)

2026.05.09

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“Third of a Third” refers to subwave 3 within wave 3 of an impulse. When wave 3 of an impulse extends, its internal subwave 3 also often extends further, producing the largest price range in the entire wave structure. In this dictionary it is denoted as “third of a third” or “3-3,” and is considered the trade opportunity Elliotticians watch most closely.

Overview: What is the Third of a Third?

In Elliott Wave Theory, an impulse unfolds as a five-wave structure of waves 1, 2, 3, 4, and 5. Among these, wave 3 is the most likely to extend (→ Wave Extension).

Wave 3 itself also contains five internal subwaves (1, 2, 3, 4, 5), forming a fractal structure. And when wave 3 of an impulse extends, its internal subwave 3 (= the “third of a third”) often extends further as well.

In other words, the “third wave within the larger third wave” produces the sharpest, largest price movement in the entire wave structure. In this dictionary, this wave is denoted as “third of a third” or, in short, “3-3.”

Illustrated Chart

① The third of a third produces the largest price range — Click to expand
S (1) (2) 3-3 (3) (4) (5) Subwave 3 within wave 3 surges
The interior of the larger (3) wave further subdivides into five subwaves (a-b-c-d-e), and among them the third subwave (red line, 3-3) produces the sharpest and longest price movement. When wave 3 of an impulse extends, this subwave 3 often also extends, producing the largest price range in the entire wave structure.
How to read the diagram: Within the larger waves (1)–(5), wave (3) extends, and the internal subwave 3 (red segment) within it extends further — illustrating the fractal structure of the “third of a third.”

Detailed Points

  1. The wave most likely to produce the largest price range

    Wave 3 of an impulse is the action wave most likely to extend, and when its internal subwave 3 extends further, it produces the largest price range in the entire wave structure. This is a manifestation of the fractal structure of Elliott Wave Theory (the characteristic of the one-degree-larger wave being reflected in the subwaves).

  2. An exceptional profit opportunity for Elliotticians

    Because a large price range tends to occur in a short period, this is the phase that traders practicing Elliott Wave analysis watch most closely. If you can catch the subwave 3 within wave 3 of an impulse, you can capture the trend efficiently.

  3. Denoted as “third of a third” or “3-3” in this dictionary

    A label that makes the hierarchical relationship “wave 3 within wave 3” explicit. This dictionary uses the notation “third of a third” or its abbreviation “3-3.” This is the standard expression when referring to subwave 3 within wave (3) in a wave count on a chart.

Wave Extension
The tendency for one of waves 1, 3, or 5 of an impulse to become larger than the others. Wave 3 is the most likely to extend.

Summary

“Third of a Third” refers to subwave 3 within wave 3 of an impulse. When wave 3 of an impulse extends, its internal subwave 3 often extends further as well, producing the largest price range in the entire wave structure.

In this dictionary, it is denoted as “third of a third” or, in short, “3-3.” It is the trade opportunity that Elliotticians watch most closely — an exceptional profit opportunity.

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