Stock Screening with Price Range, Prior Limit Status, and Relative Volume

Summary

This Chinese stock-screening post proposes filtering shares by daily price range, whether the previous session was a limit-up day, and relative trading volume. Its written description specifies a range greater than 1 and a volume ratio between 1.5 and 6, with the prior-day limit-up exclusion intended to avoid stocks that have risen too abruptly. Relative volume is presented as a way to find candidates with increased trading activity. The post gives formulas for range and volume ratio and a sample data workflow, but it reports no backtest or evidence of predictive performance.

The document is internally inconsistent: its title says the volume ratio should exceed 1, while the explanation and final rule give the narrower 1.5-to-6 interval. The sample code also adds a market-cap filter not included in the headline rule, and its test for the previous session’s limit-up status is not clearly equivalent to the stated condition. The author notes that the screen omits broader market and company risks, and suggests fundamental measures and risk controls as possible additions.

Key ideas

• The proposed screen combines price range, prior-session limit-up status, and relative volume.
• The written rule specifies a volume ratio from 1.5 to 6, despite the title’s simpler threshold.
• The author views elevated relative volume as evidence of trading activity supporting a candidate.
• The sample code adds a market-cap filter and may not faithfully implement the stated conditions.
• The post offers no performance test and notes that market and individual-stock risks remain.

Tags

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