Élargissement du sommet Complete Guide
What is Élargissement du sommet?
Le biseau d'élargissement est une figure de retournement à biais baissier. 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 toutes les unités de temps.
Identification Rules
- A clear prior uptrend must be evident before the pattern begins to form.
- The pattern must exhibit at least two progressively higher highs and two progressively lower lows, indicating expanding volatility.
- Two diverging trendlines can be drawn: an upward-sloping upper trendline connecting the higher highs, and a downward-sloping lower trendline connecting the lower lows.
- The pattern should typically span a minimum of 20 bars (or approximately three weeks, as per Bulkowski's observations) to be considered valid.
References
- Thomas N. Bulkowski (2005). Encyclopedia of Chart Patterns.
- Steve Nison (2001). Japanese Candlestick Charting Techniques.
FAQ
What is the typical success rate of a Broadening Top in predicting a bearish reversal?
According to Thomas Bulkowski's extensive research, Broadening Tops have a high probability of predicting a bearish reversal, with approximately 93% of breakouts occurring to the downside. This makes it a strong indicator for trend reversal, though its performance in meeting specific price targets is lower.
How does volume typically behave during the formation of a Broadening Top pattern?
Volume during the formation of a Broadening Top tends to be erratic, but often shows an overall increase as the pattern develops. This is particularly noticeable on the downswings, reflecting increasing market participation, indecision, and growing distribution by sellers.
What is the average price decline after a confirmed Broadening Top breakout?
Based on Bulkowski's analysis, the average price decline after a confirmed downward breakout from a Broadening Top pattern is approximately 19%. It's important to note that this is an average, and actual declines can vary significantly.
How long does a Broadening Top typically take to form?
While the minimum duration for recognition is often cited as 20 bars, Bulkowski's research suggests that Broadening Tops typically take at least three weeks to form. However, they can extend for several months, indicating a prolonged period of market indecision and increasing volatility.
Are there any common pitfalls or false signals associated with Broadening Tops?
A common pitfall is premature entry. The pattern's inherent volatility means prices can swing widely. It's crucial to wait for a confirmed breakout below the lower trendline. Additionally, throwbacks or pullbacks to the breakout level are common (occurring in about 66% of cases), which can mislead traders if not anticipated.
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