Screening for Volatile Stocks After a Prior Opening Limit-Down Signal

Summary

This Chinese stock-selection note describes a short-term screen combining daily amplitude, a prior-day 9:15 matched-price limit-down condition, and relative trading volume. The final criteria specify amplitude above 1, relative volume above 1.5 and below 6, and the stated prior-session price pattern. The accompanying explanation interprets the filters as seeking stocks with notable price movement, weak prior opening sentiment, and active but not extreme trading. It also mentions ranking selected stocks by popularity, though this is separate from the core conditions.

The note provides indicator formulas and sample implementation references, but no backtest, performance evidence, or precise validation of the signal. Its own caveat is that the screen relies on a small set of indicators and omits fundamentals and broader market risks. The implementation details also appear platform-dependent, so the formulas and data definitions would need checking before use. It presents the screen as a starting point for short-term selection, not a demonstrated standalone strategy.

Key ideas

• The screen combines amplitude above 1 with a prior-day 9:15 matched-price limit-down pattern.
• It filters relative volume to values above 1.5 and below 6.
• The stated rationale links the filters to volatility, weak opening sentiment, and active trading.
• The note gives no performance evidence and warns that fundamentals and market risks are omitted.

Tags

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