A-Share Screening with KDJ Crossovers, Volatility, and Limit-Ups

Summary

This daily A-share screen combines price movement and a stochastic oscillator signal. It selects stocks with amplitude above 1, at least two limit-up sessions in the prior 500 days, and a newly formed KDJ golden cross using the 9,3,3 setup. The article describes amplitude and past limit-ups as signs of trading activity or market enthusiasm, while the KDJ crossover is used to indicate a possible trend change.

The document provides indicator formulas and sample screening logic, but no backtest, performance figures, or evidence that the conditions predict returns. It cautions that technical signals can be misleading, that relying on a single indicator adds uncertainty, and that the screen omits company fundamentals. It suggests combining short-term signals with valuation measures, longer-term factors, or sector-specific rules. The stated thresholds and sample code should be treated as an illustrative specification rather than a validated trading system.

Key ideas

• The screen requires amplitude above 1 and at least two limit-up sessions over 500 days.
• A newly formed KDJ crossover is the timing signal in the selection logic.
• The article presents volatility and limit-up frequency as proxies for market activity and enthusiasm.
• The screen omits fundamentals and can produce misleading signals across different market conditions.
• Combining technical rules with valuation or longer-term factors is suggested as an improvement.

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