Screening Stocks by Limit-Up History, Volume Ratio, and Bollinger Bands

Summary

This document proposes a Chinese stock screen using three signals: a high volume ratio, a rounded price pattern approximated through Bollinger Band contraction or expansion, and at least two limit-up events over 500 days. It describes ranking stocks by volume ratio and using the band behavior to identify a possible change in market direction. The text explains the intended rationale for each signal and suggests combining them with measures such as turnover, trading volume, MACD, or RSI.

The article gives no precise combined selection rule, executable formula, backtest, or performance evidence; its final logic section is incomplete. Bollinger Band contraction or expansion alone does not define a rounded price pattern, and either condition may precede movement in either direction. The document acknowledges that these signals do not assess fundamentals and that limit-up events do not prevent subsequent pullbacks. It is therefore a high-level screening idea rather than a fully specified or validated trading strategy.

Key ideas

• The proposed screen combines volume-ratio ranking, Bollinger Band behavior, and repeated limit-up events.
• The document treats band contraction or expansion as a proxy for a rounded price pattern, without defining a precise rule.
• It provides no complete selection formula or backtest evidence.
• The author notes that technical signals can mislead and that stocks may pull back after limit-up events.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.