Screening Chinese Equities for Volatility and Recent Limit-Ups

Summary

This proposed A-share stock screen combines a daily amplitude filter, a recent limit-up condition, and a user-defined company-quality filter. Stocks passing the conditions enter a candidate pool; suggested fundamental criteria include growth, profitability, or dividends. The article provides formula and Python-style examples and suggests ranking candidates by weighted criteria, with further review of industry, economic-cycle, and policy context.

The rationale is that larger daily ranges may offer more movement and that a recent limit-up may indicate strong market interest, while fundamental filters may add a quality dimension. These are hypotheses rather than demonstrated effects: the document supplies no backtest results or evidence that the combination predicts returns. It warns that volatile stocks can carry greater risk, historical observations may not forecast future performance, and poorly chosen company filters can misclassify firms. The example conditions and limit-up detection should also be checked for market rules, adjustment conventions, and look-ahead or survivorship bias before evaluation.

Key ideas

• The screen combines daily amplitude, a limit-up occurrence in the preceding period, and a customizable company-quality filter.
• The proposed candidates are placed in an investment pool rather than treated as automatic buy signals.
• Fundamental review and weighted ranking are suggested as ways to refine the screen.
• The document offers no empirical performance evidence, and its stated rationale is not proof of predictive value.
• Volatility, data conventions, and historical-sample limitations can affect results.

Tags

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