A Chinese Stock Screen Using Opening Gain, Amplitude, and Float Concentration

Summary

The document proposes screening Chinese stocks using price amplitude, market-value concentration, and the gain at the market open. Its initial rule selects stocks with amplitude above a threshold, a stated concentration condition, and an opening gain below six percent. The accompanying discussion frames amplitude as a measure of movement and a modest opening gain as a way to avoid selecting stocks that have already risen sharply.

It also identifies limits: the screen emphasizes short-term market data, the opening move may not predict later performance, and results depend on data quality and timeliness. Suggested refinements include constraining amplitude to a range, combining several early-session measures such as turnover and volume, and optionally adding fundamentals or capital-flow data. The article provides illustrative screening logic and code, but no backtest or evidence of returns; some condition descriptions and examples appear inconsistent, so the rules should be checked before use.

Key ideas

• The proposed screen combines price amplitude, float-to-total market value concentration, and opening gain.
• The article suggests using multiple early-session indicators rather than relying on a single opening-price condition.
• Fundamental and capital-flow measures are presented as optional additions to a short-term screen.
• The author notes that opening performance may have little relevance to subsequent price movement.
• The document reports no backtest results, and some descriptions of the screening thresholds are inconsistent.

Tags

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