A-Share Screening with RSI, Order-Flow Ratio, and Control Share

Summary

This A-share stock screen combines a relative strength index below 65 with an external-to-internal trading volume ratio above 1.3 and a control ratio above 21%. The article interprets the RSI threshold as avoiding overbought conditions, the order-flow ratio as a sign of buying interest, and the control ratio as an indication of larger-player participation. Its example code also applies a positive but bounded ten-day price change filter and checks current market data.

The author cautions that the screen relies mainly on technical indicators, which can be short-lived or misread, and does not initially account for company fundamentals. Suggested extensions include assessing financial metrics and broader market conditions. The document provides indicator descriptions and sample implementation guidance, but no backtest, performance evidence, or validation of the data fields and calculation methods. The title mentions an order-flow ratio above 1, while the body and code specify above 1.3.

Key ideas

• The screen requires RSI below 65, an external-to-internal trading ratio above 1.3, and a control ratio above 21%.
• The accompanying code also filters for a positive ten-day return below 35%.
• The article treats the indicators as signals of trend conditions and buying participation, rather than as guarantees of future gains.
• The author recommends adding fundamental measures and considering market and policy changes.
• The document offers no backtest or measured evidence that the screen is profitable.

Tags

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