Screening Volatile Stocks After a Limit-Down Auction and Ranking by Attention

Summary

This China equity screening idea selects stocks with amplitude above 1 whose prior-day 9:15 matched auction price met a limit-down condition, then ranks candidates by a measure of stock popularity and takes the leading names. Its rationale combines price volatility, a sharp negative auction signal, and market attention, with the suggestion that attention ranking can surface actively watched stocks.

The document gives illustrative indicator formulas and sample Python-like logic, but does not report tests, returns, or evidence that the combination identifies high-quality stocks. It acknowledges that popularity ranking can overlook fundamentals and broader market performance, and suggests incorporating valuation and technical measures such as MACD. The code relies on platform-specific indicator functions and a popularity field, so it is not a self-contained implementation. The screen is a short-term selection concept and its stated conditions alone do not define entry, exit, or risk controls.

Key ideas

• The screen filters for amplitude above 1 and a prior-day 9:15 matched price associated with a limit-down condition.
• Candidates are ranked by market attention, with the highest-ranked names selected.
• The document supplies formula references but no backtest or performance evidence.
• Popularity and short-term price conditions do not capture company fundamentals or define full trade management.

Tags

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