A Chinese A-Share Screen Combining Volume Ratio and Prior Limit-Down Pricing

Summary

This post outlines a Chinese A-share stock screen using two ranked conditions: a high volume ratio and the gap between the previous day’s limit-down price and closing price. It says to select the top 100 stocks by each measure and refers to a period beginning in 2021. The accompanying discussion characterizes the screen as seeking stocks with strong trading activity after a limit-down event, but it does not clearly specify how the two rankings are combined or define a reproducible entry and exit rule.

The post warns that the screen emphasizes short-term price and trading behavior, may omit company fundamentals, and may be unsuitable for long-term investors. It suggests adding valuation measures and longer time windows. The code excerpt is incomplete and does not faithfully implement the stated selection logic, so it should not be treated as a validated strategy. No backtest results, benchmark comparison, or evidence of returns are provided; the selection rationale remains a rough hypothesis requiring careful testing.

Key ideas

• The proposed screen ranks stocks by volume ratio and the prior session’s limit-down price gap.
• The stated lookback begins in 2021, but the post leaves the ranking combination unclear.
• The author identifies short-term focus and missing fundamentals as limitations.
• The supplied code is incomplete and does not establish a reliable implementation.
• The document gives no backtest or performance evidence for the proposed screen.

Tags

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