A-Share Screening by Market Capitalization, Range, and Limit-Up Activity

Summary

This document presents an A-share stock screen combining a daily price-movement condition, a minimum circulating market capitalization, and more than two limit-up sessions within a recent ten-day window. It frames these filters as a way to capture volatility, company size, and market attention. Example indicator and Python snippets are included, though the snippets do not consistently express the stated conditions: for instance, the written thresholds and the code’s checks are not fully aligned.

The article flags the risk of chasing popular stocks, especially during market corrections, and suggests adding momentum measures and research into company fundamentals. It does not provide backtest results, return estimates, or evidence that the screen predicts future gains. The market-attention rationale is qualitative, and implementation would require clarifying units, exchange coverage, and the exact limit-up and price-movement definitions before evaluation.

Key ideas

• The screen combines a price-movement filter, a circulating market-capitalization floor, and recent limit-up frequency.
• The article treats repeated limit-up activity as a proxy for market interest.
• It warns that popular stocks can expose investors to losses when conditions turn.
• The examples have inconsistencies with the written criteria, so the exact rules need clarification.
• No backtest or predictive evidence is reported.

Tags

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