A-Share Screening by Price Range, Float Size, and Rising KDJ

Summary

This post outlines an equity screen using three conditions: daily price amplitude above 1%, tradable share float no greater than 5.5 billion shares, and a positive change in the K component of the KDJ indicator. It frames the filters as a way to find more active smaller-cap stocks with improving short-term technical momentum. Formula-style and Python examples show how to calculate amplitude, compare the current K value with the previous one, and combine the conditions.

The post cautions that the rules do not assess company fundamentals and that KDJ changes can be distorted by market sentiment or technical noise. It suggests adding indicators such as MACD or RSI and fundamental measures such as returns or profitability. The examples also introduce a top-ranked subset based on volume ratio, although this is not part of the initial screen description. No backtest, selection statistics, or profitability evidence is provided, and the implementation details should be checked against the intended definitions of amplitude and ranking.

Key ideas

• The proposed screen requires amplitude above 1%, float at or below 5.5 billion shares, and rising KDJ K values.
• The examples combine the filters and optionally rank qualifying stocks by volume ratio.
• The author notes risks from missing fundamentals and reliance on a single technical signal.
• No performance results are supplied, and implementation definitions may require verification.

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