Chinese Stock Breakout Screen Using Bollinger Bands and Recent Returns

Summary

This Chinese stock-selection proposal screens for shares with daily amplitude above one percent, a positive return over ten days below thirty-five percent, and a close breaking above the prior upper Bollinger Band while remaining above the prior middle band. It also requires the current close to exceed the previous close. The stated rationale is to seek volatility and upward momentum while excluding stocks with especially large recent gains. The article includes formula and Python references, with Bollinger Bands calculated over twenty periods using two standard deviations, and sorts qualifying names by popularity.

The document offers a rule description and implementation examples, but no backtest, benchmark, transaction-cost analysis, or out-of-sample results. It warns that Bollinger signals can fail during abnormal price moves and that technical screening can overlook company fundamentals. It recommends considering financial condition and market context alongside technical filters. The ten-day return condition is described as positive but below thirty-five percent; the supplied formula uses an absolute-return expression, so implementation details warrant checking against the intended rule.

Key ideas

• The screen looks for a close moving above the prior upper Bollinger Band and staying above the middle band.
• It combines the breakout condition with a minimum daily amplitude and a capped positive ten-day return.
• The article provides both formula and Python references but no measured trading results.
• The author cautions that technical signals can fail and should be considered alongside fundamentals and market conditions.

Tags

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