A-Share Stock Screen Using RSI, Trading Volume Imbalance, and Fund Flows

Summary

This Chinese-language post outlines an A-share stock screen combining a 14-period RSI below 65, a ratio of external to internal trading volume of at least 1.3, and a high rank for large-order net inflows. Its example selection formula ranks second-level net inflow and keeps stocks within the top 50. The accompanying Python example adds checks for positive large-order flow measures and compares recent inflows with a rolling average.

The rationale is to pair a technical condition with trading-flow measures that may reflect investor attention. The post presents implementation sketches, but it provides no historical returns, benchmark, transaction-cost analysis, or validation results. It warns that the screen omits fundamental analysis, can overfit historical behavior, and treats large-order inflows as imperfect evidence of value. The code and formula descriptions are not fully aligned in every detail, so the exact screening rules and data definitions should be verified before replication.

Key ideas

• The screen requires RSI below 65 and an external-to-internal volume ratio of at least 1.3.
• It ranks stocks by large-order net inflow and selects high-ranking candidates.
• The example code also checks positive flow measures and compares inflow with a rolling average.
• The post warns that fund flows can be misleading and that the approach lacks fundamental analysis.
• No backtest results or evidence of outperformance are provided.

Tags

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