Screening Chinese Stocks with Weekly Moving-Average Crossovers and Bollinger Bands

Summary

The document outlines a stock screen combining an amplitude threshold, a weekly five-period moving average crossing above a ten-period average, and a closing price between the Bollinger middle and upper bands. The crossover is intended to identify an improving trend; the band condition constrains where price sits within its recent range, while the amplitude filter favors stocks with notable movement. The accompanying explanation suggests this mix could suit short- or medium-term selection, especially for active trading.

It provides indicator formulas and sample code, but the implementation does not align cleanly with the stated rules: the code calculates moving averages from daily closes and tests price above the middle band, rather than clearly implementing a weekly crossover. It also supplies no backtest or performance evidence. The document itself cautions that volatile markets and weak sentiment can undermine indicator-based selection, and suggests parameter tuning and confirmation with other indicators. The screen is therefore a rule sketch, not evidence of a robust strategy.

Key ideas

• The proposed screen combines price amplitude, a weekly moving-average crossover, and a Bollinger Band location filter.
• The moving-average crossover is used as a directional trend condition.
• The code sample appears to differ from the written weekly rule and should be checked before use.
• The document gives no backtest results and warns that volatility and market conditions can limit the screen.

Tags

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