Screening Shanghai-Listed Stocks for Limit-Down Auction and Range Conditions

Summary

This community post describes a Chinese equity screen limited to stocks with codes beginning with 60. It combines a daily price-range condition with a previous-session opening-auction match price at the limit-down level, then ranks candidates by popularity. The post includes indicator and Python examples intended to express the selection rules, though it does not provide a tested trading process or performance results.

The author characterizes the screen as relying on volatility, short-term price behavior, and a narrow universe definition. The post warns that it omits fundamentals and broader market risk, and that price manipulation and market volatility may affect results. It recommends adding technical and fundamental measures and incorporating capital management and risk controls. As presented, the method is a basic screening idea; the supplied material does not establish that the conditions predict returns or explain execution and data requirements in enough detail for reliable replication.

Key ideas

• The screen selects code-60 stocks using a price-range threshold and a prior-session auction condition associated with limit down.
• Candidates are sorted by a popularity measure after screening.
• The method focuses on short-term technical conditions and does not include fundamental analysis.
• The post cautions that market risk, volatility, and possible price manipulation can undermine the screen.
• It recommends combining the screen with broader research and risk controls, but supplies no performance evidence.

Tags

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