Screening Chinese Stocks for a Prior-Day Limit-Down Opening Match

Summary

The proposed Chinese equity screen selects stocks with an amplitude above one, excludes those that closed at the prior day’s upper limit, and requires the prior day’s 9:15 matching price to be at the lower limit. The stated rationale is that a sharp downside signal might identify candidates for a short-term rebound.

The article offers no measured performance or supporting backtest, and its sample code is only a reference. It warns that relying on a narrow slice of price data can omit other relevant information and that selected stocks may be volatile. It suggests further checking company fundamentals and financial condition, but does not define a holding period, entry or exit rules, or risk controls. The screen should therefore be read as a speculative candidate filter rather than evidence of a profitable strategy.

Key ideas

• The screen combines a minimum amplitude condition with prior-day price-limit conditions.
• It excludes stocks that were at the upper limit and seeks a lower-limit 9:15 match price.
• The proposed rationale is to look for potential rebounds after severe selling pressure.
• The article provides no performance evidence or complete trade-management rules.
• It advises further company research and risk management because candidates may be volatile.

Tags

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