A-Share Screening by Turnover, Region, and Reported Large-Holder Control

Summary

The proposed Chinese stock screen filters for daily turnover between 3% and 12%, excludes Beijing-listed A shares, and selects stocks described as being controlled by major holders on the previous day. The article discusses this holder-control signal as a way to identify influential ownership, and provides a Python example that checks turnover and a top-ten-holder ratio. That example uses a 50% holding threshold, although the article’s stated final screen does not specify this threshold.

No backtest, market-period comparison, or performance evidence is presented. The article acknowledges that holder data can be delayed and that the classification may be inaccurate; it suggests combining additional data and other fundamental or technical indicators. The code’s data fields and one-day sample date do not establish that it reliably implements the described signal. Results would depend on the data source, definitions, timing, and treatment of trading costs and risk.

Key ideas

• The screen uses a turnover range of 3% to 12%, excludes Beijing A shares, and looks for a prior-day major-holder control signal.
• The code example checks top-ten-holder data and applies a 50% ratio threshold, which is not stated in the final screen description.
• The article warns that holder data may be inaccurate or delayed.
• No backtest or evidence of returns is provided.
• The article proposes adding data sources and combining other fundamental or technical measures.

Tags

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