Broadening Formation
Chart PatternsA chart pattern where price swings widen over time, forming diverging trendlines. It reflects increasing volatility and disagreement between buyers and sellers.
What Is a Broadening Formation?
A broadening formation (also called a megaphone pattern) is the opposite of a triangle. Instead of converging, the trendlines diverge. Price makes higher highs and lower lows, expanding the range with each swing. The result is a widening pattern that resembles a megaphone.
This pattern occurs when market uncertainty is increasing. Buyers and sellers are both becoming more aggressive, creating larger swings in both directions.
Trading the Broadening Formation
This is one of the more challenging patterns to trade because it lacks a clear direction. Aggressive traders buy at the lower trendline and sell at the upper trendline, but the expanding range means each swing is larger and harder to time.
On GBP/USD, the more reliable approach is to wait for a decisive break outside the formation. A break above the upper trendline with strong momentum signals a bullish resolution. A break below the lower trendline is bearish.
Where It Appears
Broadening formations often develop during periods of high uncertainty, such as ahead of major central bank decisions or during political instability. They are more common near market tops than bottoms. When you see one forming on the daily chart, it signals that the market is in a state of confusion and that a significant directional move is likely once the pattern resolves. Risk management is especially important here because the wide swings can trigger stops easily.
Related Terms
Wedge
A pattern with two converging trendlines that both slope in the same direction. A rising wedge is bearish, and a falling wedge is bullish, as price typically breaks against the wedge's slope.
Symmetrical Triangle
A continuation pattern where converging trendlines connect lower highs and higher lows, creating a narrowing range. It typically breaks in the direction of the prior trend.
Diamond
A rare reversal pattern that looks like a diamond shape on the chart, formed by a broadening formation followed by a symmetrical triangle. It typically signals a trend reversal.
Volatility
The degree to which a currency pair's price fluctuates over a given period. High volatility means large price swings; low volatility means the price moves in a narrow range.