Mainland China Stock Screen Using Turnover, Daily Gains, and Bollinger Bands

Summary

The screen selects main-board shares with turnover between 3% and 12%, a daily gain above 1%, and a closing price between the 20-day moving average and the Bollinger upper band. The post frames turnover and daily price change as filters for activity and upward movement, then uses the Bollinger position as a technical condition. It includes formula and code references for expressing these criteria.

The article gives no backtest results, benchmark, or evidence that the screen predicts future returns. It acknowledges that relying on technical conditions can overlook company fundamentals and that unusual market moves may weaken the signal. It suggests adding fundamental and other technical measures and using a stop loss, but does not specify how to implement or evaluate those additions. The criteria describe a stock-selection screen; they do not define a complete portfolio, entry execution, or exit plan.

Key ideas

• The screen requires turnover from 3% to 12% and a daily gain above 1%.
• Eligible stocks must be on the main board and close above the 20-day average but below the Bollinger upper band.
• The post treats this Bollinger range as a possible sign of upward movement, without providing supporting test results.
• The article notes that technical filters omit fundamental information and can be unreliable during abnormal market moves.
• It suggests adding other indicators and using stop losses, but gives no tested implementation.

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