A-Share Screen Using Amplitude, a Fresh KDJ Cross, and Price

Summary

This A-share selection rule looks for stocks with amplitude above 1%, a newly formed KDJ crossover, and a closing price below 12. The article treats the range condition as a volatility filter, the crossover as a possible sign of improving momentum, and the price ceiling as a way to identify lower-priced shares. It includes indicator and Python examples intended to implement the combined conditions.

The post does not report backtest results or evidence that the signals predict gains. It cautions that the rule omits company fundamentals and valuation, and that lower-priced stocks can carry substantial downside risk. It suggests adding measures such as revenue, profit, market capitalization, industry, and valuation, but gives no validation method. The examples also differ in their amplitude calculation and KDJ construction, which may affect signal consistency across implementations. The screen is a candidate-selection recipe, not a complete strategy with defined execution, exits, or risk controls.

Key ideas

• The screen requires amplitude above 1%, a newly formed KDJ crossover, and a closing price below 12.
• The article interprets the crossover as a possible momentum signal, not a confirmed prediction.
• It warns that fundamentals and valuation are omitted and that lower-priced stocks may carry high risk.
• No backtest or return evidence is given.
• The example implementations use differing indicator calculations, which may produce inconsistent selections.

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