Screening Chinese Stocks for Prior Limit-Down Activity and Turnover

Summary

This Chinese stock-selection post proposes a screen combining amplitude, a prior-day 9:15 matched price at the limit-down level, and a turnover-related volume measure from an earlier session. Its final selection logic also constrains the current price change to a narrow range, then sorts qualifying stocks by total market value. The text offers a formula reference and a sample Python-style implementation, although the displayed code includes platform-specific expressions that are not ordinary Python and may need adaptation.

The rationale is that large amplitude may create opportunities, the opening matched price may reflect market sentiment, and turnover may indicate activity. The post presents no backtest results or evidence that these signals predict returns. It notes that simple technical filters can select too many stocks and omit company fundamentals, and suggests combining them with valuation, financial, technical, and risk controls. The stated conditions are a starting screen, not demonstrated proof of profitability.

Key ideas

• The screen combines price amplitude, prior-day opening matched-price behavior, and a turnover-related measure.
• The final selection logic also restricts the current price change and ranks candidates by total market value.
• The post includes formula and code references, but the sample implementation may require adaptation to run.
• No performance evidence is supplied, and the post cautions that the screen omits fundamentals and risk controls.

Tags

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