Chan Duan Up Complete Guide

What is Chan Duan Up?

The 'Chan Duan Up' (缠断向上) is a sophisticated structural bullish continuation pattern that integrates principles from both Eastern structural trend theory and Western classical charting. It is characterized by a sharp, high-momentum impulse move followed by a precise 15-bar consolidation phase known as the 'entanglement.' This 15-bar requirement is technically significant; in structural analysis, it represents the minimum duration needed to form a three-stroke 'segment,' ensuring that the consolidation is not merely a brief pause but a robust re-accumulation zone. In Western technical analysis, this pattern most closely aligns with the 'High and Tight Flag' or a complex Bullish Flag. According to Thomas Bulkowski’s 'Encyclopedia of Chart Patterns,' high and tight flags are among the best-performing patterns, boasting a failure rate of only 5% in bull markets and an average rise of 69% following a confirmed breakout. The 'entanglement' phase consists of overlapping price action where the bulls and bears reach a temporary equilibrium, often forming a narrow horizontal channel or a slight pennant. Steve Nison, a pioneer in candlestick charting, notes that such periods are defined by small-bodied candles like spinning tops or dojis, signaling a decrease in volatility. Volume is a critical confirming factor: it should be exceptionally high during the initial flagpole, diminish significantly during the 15-bar entanglement (often reaching a 'volume dry-up' point), and then surge decisively upon the breakout. A valid 'Chan Duan Up' requires the 15th bar to complete the structural integrity of the base before a breakout above the consolidation high signals a continuation of the primary uptrend.

Identification Rules

1. The pattern must be preceded by a sharp, nearly vertical price advance (the flagpole) on high relative volume.
2. A consolidation phase (entanglement) must last exactly 15 bars, showing overlapping price action within a tight range.
3. During the 15-bar period, the price must not retraces more than 30-50% of the preceding upward move.
4. Confirmation occurs when a bar closes above the high of the 15-bar consolidation with a noticeable surge in volume.

References

• Thomas N. Bulkowski (2005). Encyclopedia of Chart Patterns.
• Steve Nison (2001). Japanese Candlestick Charting Techniques.

More Analysis