Leading & Ending Diagonals
Overview
Diagonals are wedge-shaped Elliott Wave patterns that occur in specific positions within the wave structure. Leading diagonals appear in wave one or wave A positions and signal the beginning of a new trend. Ending diagonals appear in wave five or wave C positions and signal trend exhaustion. Both types feature overlapping sub-waves contained within converging trendlines.
Key Concepts
Leading diagonals subdivide into five waves with a three-three-three-three-three internal structure. Ending diagonals also subdivide into five waves with three-wave sub-structures in each leg. Both types feature wave overlap — wave four enters the territory of wave one. Converging trendlines connect the highs and lows of each wave. Throw-over (a brief break beyond the diagonal's trendline) is common and often marks the terminal point.
Entry Signals
Enter after a completed ending diagonal breaks back through its upper or lower trendline. Leading diagonal completion in wave one suggests entering on the wave two pullback. Look for volume divergence as the diagonal progresses — decreasing volume confirms exhaustion. A throw-over followed by a sharp reversal back inside the pattern is a high-probability entry.
Exit Signals
After an ending diagonal, target a retracement to at least the start of the diagonal. Stop beyond the throw-over extreme. Leading diagonal trades target wave three, which is typically the strongest impulse wave. Exit if the diagonal's origin point is invalidated.
Best Timeframes
1H, 4H, Daily
Pro Tips
Ending diagonals are among the most reliable exhaustion patterns in Elliott Wave theory because they signal the final thrust of a tired trend. The key identification feature is overlapping waves — if waves do not overlap, the pattern is likely an impulse, not a diagonal. Always confirm with momentum divergence on RSI or MACD.
More Topics in This Category
Impulse Waves (1-5)
The impulse wave pattern consists of five waves in the direction of the larger trend: three motive waves (1, 3, 5) separated by two corrective waves (2, 4). This is the core structure of Elliott Wave Theory. Wave 3 is typically the longest and most powerful, never the shortest. Wave rules: Wave 2 cannot retrace beyond the start of Wave 1. Wave 4 cannot overlap with Wave 1 territory (except in diagonals).
Fibonacci Retracements & Extensions
Fibonacci ratios are central to Elliott Wave — they define where waves are likely to end and project targets for the next wave. Key retracement levels (0.382, 0.5, 0.618, 0.786) identify where pullback waves (2, 4, B) are likely to end. Extension levels (1.272, 1.618, 2.618) project where motive waves (3, 5, C) are likely to reach.
Wave Personality & Psychology
Each Elliott Wave position carries a distinct psychological character that reflects the emotions and behaviour of market participants during that phase. Wave one is disbelief, wave three is recognition and momentum, wave five is euphoria, wave A is denial, wave B is false hope, and wave C is capitulation. Understanding these personality traits helps traders identify which wave is currently unfolding.
Complex Correction Patterns
Complex corrections in Elliott Wave theory combine two or three simple corrective patterns (zigzags, flats, or triangles) connected by intervening waves labelled X. These structures — double and triple zigzags, double and triple threes — create extended sideways or slightly trending corrective phases that consume time and frustrate traders before the larger trend resumes.