Screening Stocks by Daily Range, Listing Age, and Prior Limit-Ups

Summary

This Chinese-language post describes a simple stock screen: select shares with an amplitude above 1, listed for more than a year, and remove those that hit the daily price limit on the previous day. It presents range as a measure related to price movement and stock activity, while the listing-age condition is intended to avoid very new companies. The post also gives a brief Tushare-style illustration of filtering listed shares and removing prior limit-up names.

The author cautions that large ranges can indicate excessive volatility, young listings can be harder to assess, and excluding yesterday’s limit-up stocks does not prevent a stock from reaching its limit today. Suggested refinements include adding valuation or earnings measures and comparing volatility across periods. No performance results or empirical validation are supplied, and the sample implementation does not clearly operationalize the amplitude condition.

Key ideas

• The screen requires amplitude above 1 and more than one year since listing.
• It excludes stocks that reached the upper price limit on the prior day.
• The post links amplitude with both volatility and trading interest.
• The author recommends adding fundamental filters and comparing volatility across time periods.
• The post provides no backtest evidence, and its sample code does not implement every stated condition clearly.

Tags

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