Élargissement de la base Complete Guide
What is Élargissement de la base?
Le Biseau ascendant est une figure de retournement avec une tendance haussière. Il nécessite au moins 20 barres pour se former. Cette figure est largement reconnue en analyse technique et peut être observée sur tous les marchés et horizons temporels.
Identification Rules
- Prior Trend: A clear and established downtrend must precede the formation of the pattern.
- Diverging Trendlines: The pattern must feature two diverging trendlines, with the top line sloping up and the bottom line sloping down.
- Peak and Valley Count: There must be at least two distinct higher highs and two distinct lower lows within the formation.
- Bullish Confirmation: The pattern is confirmed only when the price breaks and closes above the upper resistance trendline.
References
- Thomas N. Bulkowski (2005). Encyclopedia of Chart Patterns.
- Steve Nison (2001). Japanese Candlestick Charting Techniques.
FAQ
What is the typical volume profile for a Broadening Bottom?
Le volume augmente généralement au fur et à mesure que la figure se développe, reflétant la volatilité croissante et l'intensité émotionnelle des participants au marché.
How reliable is the Broadening Bottom according to Bulkowski?
It is quite reliable with a low break-even failure rate of 10% and an average rise of 27% in bull markets.
What is a 'partial decline' in this pattern?
A partial decline occurs when the price heads toward the lower trendline but turns up before reaching it; this is often a precursor to an upward breakout.
Why is this pattern considered difficult to trade?
The widening price swings can easily trigger stop-loss orders, making entry timing and risk management more challenging than with narrowing patterns.
More Analysis
Parts of this page (FAQ, introductions) are AI-assisted. Core data and statistics are algorithmically computed. All pattern definitions are human-reviewed.
Avertissement : Cette page est basée sur des données de marché publiques et une analyse technique algorithmique. Elle ne constitue pas un conseil en investissement.
Data source: EODHD · © 2026 KlineVision AI