Screening Small-Cap Chinese Stocks After a Limit-Down Open

Summary

This proposed A-share screen looks for companies with turnover between 3% and 12%, market capitalization below 10 billion yuan, and no reported losses, then selects stocks whose prior-day 9:15 indicative matching price was at the lower price limit. The article frames the setup as a search for potentially valuable stocks experiencing sharp price pressure and provides a market-data code example for applying several of the filters.

The document supplies no backtest or evidence that a limit-down indication is followed by a recovery. It warns that a price-only signal can overlook company finances, macroeconomic conditions, policy, and other drivers, and recommends broader fundamental and market analysis. The sample code’s data date and filters should be checked against the intended historical screen; it does not demonstrate a complete, validated implementation of every stated condition.

Key ideas

• The screen combines turnover, market-capitalization, and profitability conditions with a prior-day limit-down indication.
• The proposed signal uses the 9:15 matching price at the lower price limit as its event filter.
• The article provides sample code but no backtest or return evidence.
• It warns that the screen can miss fundamental, macroeconomic, and policy risks.

Tags

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