Chinese Stock Screen Using Price Range and Prior-Day Limit-Down Signals

Summary

This note proposes a short-term Chinese equity screen using three conditions: a price-range measure above 1, a 9:25 price rise below 6%, and a previous-day 9:15 matched price associated with a limit-down event. It frames the filters as a combination of technical price behavior and market sentiment, then recommends adding further fundamental and technical checks and using trading rules such as stop losses to manage risk.

The article includes indicator and Python examples, but the implementation is not a reliable specification: some calculations do not clearly match the prose, and the daily data example does not establish that it measures the stated intraday conditions correctly. It provides no backtest or evidence of profitability. The author also cautions that sentiment-driven short-term screens can be unstable and susceptible to crowd-following; the criteria should therefore be treated as a screening hypothesis requiring careful data verification and independent testing.

Key ideas

• The proposed screen combines price range, the 9:25 price change, and a previous-day limit-down-related condition.
• The author recommends evaluating selected stocks with additional fundamental and technical factors.
• The note identifies sentiment dependence and short-term signal instability as risks.
• The code examples do not clearly establish that the stated intraday conditions are implemented correctly.
• No backtest or empirical performance evidence is included.

Tags

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