A Chinese Stock Screen Combining Range, Float Size, and Auction Net Buying

Summary

The proposed screen selects Chinese stocks using three conditions: daily amplitude above a threshold, circulating market value above a stated floor, and positive net buying by major participants during the auction. The accompanying explanation treats amplitude as a proxy for trading activity, market value as a size filter, and auction flows as a short-term indication of demand. The article also suggests considering fundamental measures and additional flow data to broaden the assessment.

The material offers no backtest or performance evidence and acknowledges that short-term flows can reflect market sentiment and may be misleading; it also leaves company fundamentals and industry conditions out of the initial screen. Its code examples do not fully match the stated screen: one changes the auction-flow inequality, while the Python example adds moving-average conditions and relies on data fields and calculations that are not fully explained. Results should not be assumed to reproduce the written criteria exactly.

Key ideas

• The screen combines a minimum price-amplitude condition, a minimum circulating market value, and auction net buying.
• The rationale is to combine trading activity, company size, and a short-term flow signal.
• The article warns that flows can be distorted by sentiment and that the screen omits longer-term fundamental and industry factors.
• It proposes adding valuation, return, and other fund-flow measures for broader analysis.
• The code examples differ from the written criteria and add conditions that are not fully specified.

Tags

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