A-Share Screen Using RSI, External-to-Internal Volume, and Turnover

Summary

This post proposes screening Chinese A-share stocks with three conditions: RSI below 65, an external-to-internal volume ratio above 1.3, and turnover between 3% and 12%. It supplies example indicator formulas and a Python-style workflow that retrieves market data, estimates the volume ratio, filters candidates by turnover, and outputs qualifying stock codes. The method combines a momentum-related oscillator with trading-activity measures, aiming to find stocks for short- to medium-term study.

The document does not present a backtest, portfolio rules, or evidence that the screen improves returns. Its title and introductory wording also differ from the detailed criteria, which specify a ratio above 1.3 and a bounded turnover range. The sample code derives volume components from daily price ranges and uses data-provider fields whose availability and definitions may affect results. The post notes that fixed thresholds can exclude candidates, may need adjustment as conditions change, and do not incorporate company fundamentals.

Key ideas

• The stated screen requires RSI below 65, an external-to-internal volume ratio above 1.3, and turnover from 3% to 12%.
• The examples combine a technical oscillator with measures of buying and selling activity.
• The sample workflow estimates the volume ratio using daily price and volume data.
• The author notes that rigid thresholds can exclude stocks and may need adjustment as market conditions change.
• The document provides no backtest or evidence that the screening conditions produce positive returns.

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