What Are Broadening Formations?
Definition, types, why they matter, and how to trade them.
What Are Broadening Formations?
A broadening formation is a chart pattern defined by progressively higher highs and lower lows — a range that expands over time rather than contracting. Where traditional patterns like triangles show compression, broadening formations show expansion. They are visually identifiable by two diverging trendlines: a rising upper boundary and a falling lower boundary.
Types of Broadening Formations
| Type | Description | Typical Bias |
|---|---|---|
| Symmetrical (Megaphone) | Both boundaries diverge equally — higher highs and lower lows in equal proportion | Neutral — directional bias set by context |
| Ascending | Rising upper boundary + roughly flat lower boundary | Bullish continuation potential at lower boundary |
| Descending | Falling lower boundary + roughly flat upper boundary | Bearish continuation potential at upper boundary |
| Diamond | Formation that starts as a broadening pattern then converges into a triangle | Reversal signal when price breaks the convergence |
| Right-Angled Ascending | Flat upper boundary + rising lower boundary | Bullish — coiling energy for upside breakout |
| Right-Angled Descending | Flat lower boundary + declining upper boundary | Bearish — coiling energy for downside breakout |
Why Broadening Formations Matter
Broadening formations signal two important conditions: increasing volatility and institutional disagreement. When the range expands, it means market participants are unable to agree on fair value — buyers are pushing highs while sellers are pushing lows more aggressively with each swing. This is often seen during:
- Major trend transitions (bulls and bears fighting for control)
- Post-earnings volatility expansion
- Macro uncertainty periods where large institutions are actively repositioning
How to Trade Broadening Formations
Boundary Entry (Mean Reversion)
The most common approach: enter when price touches the upper or lower boundary of the formation, betting on a reversal back toward the middle.
- At the upper boundary (resistance): short with a stop above the boundary
- At the lower boundary (support): long with a stop below the boundary
- This approach requires discipline — the boundaries must be respected, and stops must be honored
Breakout Entry
When price breaks out of the formation with conviction, it signals the end of the indecision phase and a potential new directional trend. Enter on the breakout bar with a stop inside the formation.
TDL Connection
The Formation Scanner automatically detects 7+ types of broadening formations across 250+ symbols simultaneously and scores them for trading quality using its proprietary CONF rating system. Instead of manually drawing trendlines across hundreds of charts, the scanner identifies, classifies, and scores these formations for you.
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