A-Share Screen Using RSI, Three Down Sessions, and Volume Control

Summary

This post proposes an A-share screen using RSI below 65, three consecutive down sessions, and a prior-day “main force control” condition. Its examples approximate the last condition with volume above a moving average and a rolling count of such events. The article presents this combination as a way to assess sentiment and trading flows, but does not define the main-force concept independently of that volume proxy.

The post provides indicator and Python examples but no backtest results or evidence that the screen predicts returns. It acknowledges that the approach can be unstable, depends on short-term market conditions and liquidity, may not forecast future prospects, and could exclude otherwise attractive stocks. The stated three-session condition and code appear inconsistent: the prose says down sessions, while the example comparisons check whether prior closes exceeded opens. That discrepancy needs resolution before implementation.

Key ideas

• The proposed screen combines RSI below 65 with three consecutive down sessions and a prior-day control condition.
• The code approximates control using above-average volume and a rolling count over 23 observations.
• The post gives no backtest evidence and warns of instability and short-term dependence.
• The prose describes down sessions, but the example code appears to test up sessions.

Tags

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