Screening Large-Cap Chinese Stocks for Volatility and Persistent Large-Order Inflows

Summary

The article proposes screening Chinese stocks for daily amplitude above 1, circulating market capitalization above 10 billion yuan, and large-order net inflows that remain positive for at least three consecutive days and exceed a stated threshold. It frames amplitude as a sign of trading activity, market capitalization as a size filter, and sustained large-order flow as evidence of buying interest. Formula and Python examples outline how such a screen might be assembled.

This is a rule description, not an empirical study: no backtest, returns, or benchmark comparison is reported. The article itself notes that flow data may lag and that a high-amplitude condition can capture speculative activity. The code examples also do not cleanly establish the exact stated conditions, including how the multi-day flow threshold is measured. The author suggests adding turnover, company fundamentals, industry context, and technical analysis before making decisions.

Key ideas

• The proposed screen requires amplitude above 1 and circulating market value above 10 billion yuan.
• It seeks positive large-order net flow over at least three consecutive days, with a stated minimum threshold.
• The article treats amplitude as a measure of activity and persistent inflows as a sign of buying interest.
• It warns that flow data can be delayed and that high amplitude may reflect speculation.
• No backtest or performance evidence is provided, and the sample implementation may not exactly match the stated rule.

Tags

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