A-Share Screening with Turnover, KDJ Cross, and a Sharp Daily Drop

Summary

This A-share screening rule combines turnover between 3% and 12%, a newly formed KDJ golden cross, and a stated daily maximum decline between 4% and 5%. The article describes the turnover band as a liquidity filter, the cross as a directional signal, and the drop as a way to find stocks after a short-term pullback. Its final rule also adds a market-capitalization threshold above 1 billion yuan.

The document provides formula and Python examples, but no historical test results or performance evidence. It warns that the screen omits fundamentals and industry context, may select stocks in overheated sectors, and could overfit to a very short-term price move. It suggests adding financial and technical filters or broadening or removing the daily-drop condition. The supplied code and formula contain apparent inconsistencies in how the decline and KDJ conditions are expressed, so the article does not establish that the examples implement the written rule reliably.

Key ideas

• The screen combines turnover of 3%–12%, a fresh KDJ golden cross, and a daily maximum decline between 4% and 5%.\nThe article interprets turnover as a liquidity filter and the KDJ cross as a directional signal.\nIts final stated rule also requires market capitalization above 1 billion yuan.\nThe document offers no backtest evidence and warns about omitted fundamentals, sector heat, and overfitting to a short-term move.\nThe formula and sample code may not consistently implement the described criteria.

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