A-Share Screen Using Turnover, Recent Limit-Ups, and Bollinger Bands

Summary

This A-share selection rule combines turnover between 3% and 12%, at least one limit-up event in the previous 25 days, and a latest close between the 20-day Bollinger middle and upper bands. The article frames the conditions as a way to find actively traded stocks with recent strong performance that are still above the middle band, while avoiding prices near or above the upper band. It also provides example indicator and Python implementations.

The document offers no backtest, performance results, or evidence that these conditions predict returns. It warns that the screen relies on technical data and omits company fundamentals, and that Bollinger Bands describe volatility rather than overall business quality. The sample Python logic does not exactly reproduce the stated screen, so its turnover and limit-up calculations would need review before use. The author suggests adding other technical measures, fundamental filters, industry context, and market sentiment, but does not test those additions.

Key ideas

• The screen requires turnover between 3% and 12%.\nIt looks for at least one limit-up event in the prior 25 days.\nThe latest close must be above the 20-day Bollinger middle band and below the upper band.\nThe article cautions that technical signals alone omit fundamental quality and cannot establish likely returns.

Tags

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