As of 07/22/2024   Indus: 40,415 +127.91 +0.3%     Trans: 15,900 +116.79 +0.7%     Utils: 957 +6.49 +0.7%     Nasdaq: 18,008 +280.63 +1.6%     S&P 500: 5,564 +59.41 +1.1% YTD  +7.2%    +0.0%    +8.6%    +20.0%    +16.7% Overview: 07/12/2024     41,500 or 40,000 by 08/01/2024   16,500 or 15,600 by 08/01/2024   1,000 or 910 by 08/01/2024   19,200 or 17,800 by 08/01/2024   5,750 or 5,500 by 08/01/2024
 As of 07/22/2024   Indus: 40,415 +127.91 +0.3%     Trans: 15,900 +116.79 +0.7%     Utils: 957 +6.49 +0.7%     Nasdaq: 18,008 +280.63 +1.6%     S&P 500: 5,564 +59.41 +1.1% YTD  +7.2%    +0.0%    +8.6%    +20.0%    +16.7% Overview: 07/12/2024     41,500 or 40,000 by 08/01/2024   16,500 or 15,600 by 08/01/2024   1,000 or 910 by 08/01/2024   19,200 or 17,800 by 08/01/2024   5,750 or 5,500 by 08/01/2024

# Bulkowski on the Leading Diagonal Triangle Elliott Wave Pattern

This page describes the leading diagonal triangle of the Elliott wave principle, how price moves not in a straight line but in a series of rises and retracements.

The leading diagonal triangle, or wedge as many call it, is a narrowing price move composed of two converging trendlines occurring in a wave 1 position of impulses or wave A position of zigzags. The chart to the right shows the ideal example without any subwaves highlighted.

Notice that wave 4 overlaps wave 1, just as it does in the ending diagonal triangle pattern. However, the ending diagonal triangle has a 3-3-3-3-3 subwave structure, but the leading diagonal triangle shows a 5-3-5-3-5 pattern. The next chart makes this clear.

Frost and Prechter write,

"The structure of this formation fits the spirit of the Wave Principle in that the five-wave subdivisions of the actionary waves communicate a 'continuation' message as opposed to the 'termination' implication of the three-wave subdivisions in the actionary waves of the ending diagonal."

I have no idea what that means, but I couldn't have said it better myself. They go on to write that Elliott did not discover this pattern, but Frost and Prechter believe it is valid.

About identification, they go on to write,

"The main key to recognizing this pattern is the decided slowing of price change in the fifth subwave relative to the third. By contrast, in developing first and second waves, short term speed typically increases, and breath (i.e., the number of stocks or subindexes participating) often expands."

The chart to the right shows the leading diagonal triangle in a bull market with the subwaves marked. For the purposes of illustration, think of subwaves as line segments. Wave one has five subwaves and wave two has three subwaves. The shape of the leading diagonal triangle is composed of 5-3-5-3-5 subwaves.

Frost and Prechter did not mention a bearish version of the leading diagonal triangle. If it exists, it would look like the chart flipped upside down.

The leading diagonal triangle has rules that govern its shape. They are listed here.

• The subwave action usually follows two converging trendlines.
• Subwave four often overlaps subwave 1.
• The subwave count is 5-3-5-3-5.
• The leading diagonal triangle usually occurs as part of wave one of impulses or wave A of zigzags.

-- Thomas Bulkowski

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